The high-quality genome of Brassica napus cultivar ‘ZS11’reveals the introgression history in semi-winter morphotype
作者：
Sun, Fengming;Fan, Guangyi;Hu, Qiong;Zhou, Yongming;Guan, Mei;...
期刊：
PLANT JOURNAL ,2017年92(3):452-468 ISSN：0960-7412
通讯作者：
Chalhoub, Boulos(chalhoub@evry.inra.fr)
作者机构：
[Wang, Xinfa; Wang, Hanzhong; Dong, Caihua; Tong, Chaobo; Liu, Shengyi; Hu, Qiong; Sun, Fengming; Mei, Desheng; Hu, Zhiyong; Yu, Jingyin; Huang, Shunmou; Li, Jun; Shi, Jiaqin; Hua, Wei] Chinese Acad Agr Sci, Oil Crops Res Inst, Minist Agr PRC, Key Lab Biol & Genet Improvement Oil Crops, Wuhan 430062, Hubei, Peoples R China.;[Shi, Chengcheng; Xu, Xun; Liang, Xinming; Chen, Wenbin; Huang, Guodong; Wang, Jiahao; Wang, Xi; Zhang, He; Fan, Guangyi; Li, Liangwei; Zeng, Peng; Zhang, Yaolei; Liu, Weiqing; Liu, Xin] Beijing Genome Inst Shenzhen, Shenzhen 518083, Peoples R China.;[Liu, Kede; Meng, Jinling; Long, Yan; Zhou, Yongming] Huazhong Agr Univ, Natl Key Lab Crop Genet Improvement, Wuhan 430070, Hubei, Peoples R China.;[Guan, Chunyun; Guan, Mei] Hunan Agr Univ, Coll Agron, Changsha 410128, Hunan, Peoples R China.;[Chalhoub, Boulos] OEPG, UMR1165, URGV, INRA, 2 Rue Gaston Cremieux, F-91057 Evry, France.
通讯机构：
[Boulos Chalhoub] I;[Wei Hua; Hanzhong Wang] T;Institut National de Recherche Agronomique (INRA), Unité de Recherche en Génomique Végétale (URGV), UMR1165, Organization and Evolution of Plant Genomes (OEPG), 2 rue Gaston Crémieux, 91057 Evry, France<&wdkj&>The Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture of the PRC, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, 430062 China
关键词：
Brassica napus;allotetraploid;genome;homoeolog;introgression;next-generation sequencing technologies;polyploid;subgenome;ZS11
摘要：
Allotetraploid oilseed rape (Brassica napus L.) is an agriculturally important crop. Cultivation and breeding of B. napus by humans has resulted in numerous genetically diverse morphotypes with optimized agronomic traits and ecophysiological adaptation. To further understand the genetic basis of diversification and adaptation, we report a draft genome of an Asian semi-winter oilseed rape cultivar 'ZS11' and its comprehensive genomic comparison with the genomes of the winter-type cultivar 'Darmor-bzh' as well as two progenitors. The integrated BAC-to-BAC and whole-genome shotgun sequencing strategies were effective in the assembly of repetitive regions (especially young long terminal repeats) and resulted in a high-quality genome assembly of B. napus 'ZS11'. Within a short evolutionary period (similar to 6700years ago), semi-winter-type 'ZS11' and the winter-type 'Darmor-bzh' maintained highly genomic collinearity. Even so, certain genetic differences were also detected in two morphotypes. Relative to Darmor-bzh', both two subgenomes of 'ZS11' are closely related to its progenitors, and the 'ZS11' genome harbored several specific segmental homoeologous exchanges (HEs). Furthermore, the semi-winter-type 'ZS11' underwent potential genomic introgressions with B. rapa (A(r)). Some of these genetic differences were associated with key agronomic traits. A key gene of A03.FLC3 regulating vernalization-responsive flowering time in 'ZS11' was first experienced HE, and then underwent genomic introgression event with A(r), which potentially has led to genetic differences in controlling vernalization in the semi-winter types. Our observations improved our understanding of the genetic diversity of different B. napus morphotypes and the cultivation history of semi-winter oilseed rape in Asia. Significance Statement We generated a high-quality reference genome sequence of semi-winter Brassica napus. Our BAC-to-BAC strategy was effective in the assembly of repetitive regions. The main phenotypic difference between semi-winter and winter B. napus morphotypes is the vernalization requirement. Here, we found that a key gene controlling the vernalization-responsive flowering time was altered in the semi-winter type ZS11' through both homoeologous exchanges and genomic introgression with B. rapa.
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英文
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Response of soil microbial communities and microbial interactions to long-term heavy metal contamination
作者：
Li, Xiaoqi;Meng, Delong;Li, Juan;Yin, Huaqun;Liu, Hongwei;...
期刊：
Environmental Pollution ,2017年231(Dec. Pt.1):908-917 ISSN：0269-7491
通讯作者：
Yan, Mingli
作者机构：
[Li, Xiaoqi; Liu, Hongwei; Meng, Delong; Yin, Huaqun; Liu, Xueduan; Xiao, Yunhua; Liu, Zhenghua] Cent S Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China.;[Li, Juan] Hunan Agr Univ, Coll Agron, Changsha 410128, Hunan, Peoples R China.;[Li, Xiaoqi; Liu, Hongwei; Meng, Delong; Yin, Huaqun; Liu, Xueduan; Xiao, Yunhua; Liu, Zhenghua] Minist Educ, Key Lab Biomet, Changsha 410083, Hunan, Peoples R China.;[Cheng, Cheng; Yan, Mingli] Hunan Univ Sci & Technol, Sch Life Sci, Xiangtan 411201, Hunan, Peoples R China.;[Meng, Delong] Univ Coll Dublin, Sch Biol & Environm Sci, Dublin 4, Ireland.
通讯机构：
[Yan, Mingli] H;Hunan Univ Sci & Technol, Sch Life Sci, Xiangtan 411201, Hunan, Peoples R China.
关键词：
Microbial community;Molecular ecological networks;Heavy metal contamination;Microbial interactions
摘要：
Due to the persistence of metals in the ecosystem and their threat to all living organisms, effects of heavy metal on soil microbial communities were widely studied. However, little was known about the interactions among microorganisms in heavy metal-contaminated soils. In the present study, microbial communities in Non (CON), moderately (CL) and severely (CH) contaminated soils were investigated through high-throughput Illumina sequencing of 16s rRNA gene amplicons, and networks were constructed to show the interactions among microbes. Results showed that the microbial community composition was significantly, while the microbial diversity was not significantly affected by heavy metal contamination. Bacteria showed various response to heavy metals. Bacteria that positively correlated with Cd, e.g. Acidobacteria_Gp and Proteobacteria_thiobacillus, had more links between nodes and more positive interactions among microbes in CL- and CH-networks, while bacteria that negatively correlated with Cd, e.g. Longilinea, Gp2 and Gp4 had fewer network links and more negative interactions in CL and CH-networks. Unlike bacteria, members of the archaeal domain, i.e. phyla Crenarchaeota and Euryarchaeota, class Thermoprotei and order Thermoplasmatales showed only positive correlation with Cd and had more network interactions in CH-networks. The present study indicated that (i) the microbial community composition, as well as network interactions was shift to strengthen adaptability of microorganisms to heavy metal contamination, (ii) archaea were resistant to heavy metal contamination and may contribute to the adaption to heavy metals. It was proposed that the contribution might be achieved either by improving environment conditions or by cooperative interactions. © 2017 Elsevier Ltd
语种：
英文
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Plasmonic resonance excited dual Z-scheme BiVO4/Ag/Cu2O nanocomposite: Synthesis and mechanism for enhanced photocatalytic performance in recalcitrant antibiotic degradation
作者：
Deng, Yaocheng;Tang, Lin* ;Zeng, Guangming* ;Feng, Chengyang;Dong, Haoran;...
期刊：
Environmental Science: Nano ,2017年4(7):1494-1511 ISSN：2051-8153
通讯作者：
Tang, Lin;Zeng, Guangming
作者机构：
[Zeng, Guangming; Dong, Haoran; Wang, Jiajia; Feng, Haopeng; Deng, Yaocheng; Tang, Lin; Liu, Yani; Feng, Chengyang; Tang, L; Zeng, GM] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.;[Zeng, Guangming; Dong, Haoran; Wang, Jiajia; Feng, Haopeng; Deng, Yaocheng; Tang, Lin; Liu, Yani; Feng, Chengyang; Tang, L; Zeng, GM] Hunan Univ, Key Lab Environm Biol & Pollut Control, Minist Educ, Changsha 410082, Hunan, Peoples R China.;[Zhou, Yaoyu] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Pang, Ya] Changsha Coll, Dept Biotechnol & Environm Sci, Changsha 410003, Hunan, Peoples R China.
通讯机构：
[Tang, L; Zeng, GM] H;Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.;Hunan Univ, Key Lab Environm Biol & Pollut Control, Minist Educ, Changsha 410082, Hunan, Peoples R China.
摘要：
The utilization of solar energy based on semiconductor photocatalysts for pollutant removal and environmental remediation has become a research hot spot and attracted great attention. In this study, a novel ternary BiVO4/Ag/Cu2O nanocomposite has been successfully synthesized via simple wet impregnation of Cu2O particles coupled with a subsequent photo-reduction pathway for the deposition of metallic Ag on the surface of BiVO4. The resulting BiVO4/Ag/Cu2O photocatalyst was used for the degradation of tetracycline (TC) under visible light irradiation (λ > 420 nm). Results showed that the coating contents of the Cu2O and Ag particles presented a great effect on the eventual photocatalytic activity of the photocatalysts, and the optimum coating contents of Cu2O and Ag were obtained with their mass ratios of 3% and 2%, respectively. Under optimum conditions, nearly 91.22% TC removal efficiency was obtained based on ternary BiVO4/Ag/Cu2O nanocomposites, higher than that of pure BiVO4 (42.9%) and binary BiVO4/Cu2O (65.17%) and BiVO4/Ag (72.63%) nanocomposites. Meanwhile, the enhanced total organic carbon (TOC) removal efficiency also indicated the excellent photocatalytic degradation ability of the BiVO4/Ag/Cu2O nanocomposites. As for their practical application, the effects of initial TC concentration, various supporting electrolytes and different irradiation conditions were investigated in detail. Three-dimensional excitation-emission matrix fluorescence spectroscopy (3D EEMs) was used to show the by-products of TC molecule degradation. Cycling experiments indicated the high stability of the as-prepared photocatalysts. Furthermore, the results obtained from radical trapping experiments and ESR measurements suggested that the photocatalytic degradation of TC in the BiVO4/Ag/Cu2O based photocatalytic system was the joint action of the photogenerated holes (h+), superoxide radical (O2-) and hydroxyl radical (OH). The enhanced photocatalytic activity of BiVO4/Ag/Cu2O was attributed to the synergistic effect of Cu2O, Ag and BiVO4, especially the surface plasmon resonance effect and the established local electric field brought about by metallic Ag. Additionally, to deeply understand the reaction mechanism, a dual Z-scheme charge transfer pathway has been proposed. © The Royal Society of Chemistry 2017.
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英文
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Modification of biochar derived from sawdust and its application in removal of tetracycline and copper from aqueous solution: Adsorption mechanism and modelling
作者：
Zhou, Yaoyu* ;Liu, Xiaocheng;Xiang, Yujia;Wang, Pei;Zhang, Jiachao;...
期刊：
Bioresource Technology ,2017年245(Pt A):266-273 ISSN：0960-8524
通讯作者：
Zhou, Yaoyu
作者机构：
[Liu, Xiaocheng; Zhang, Fengfeng; Xiang, Yujia; Zhou, Yaoyu; Zhang, Jiachao; Lei, Ming; Luo, Lin] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Tang, Lin; Wang, Pei] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.;[Wei, Jianhong] Hunan Agr Univ, Coll Biol Sci & Technol, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Zhou, Yaoyu] H;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
关键词：
Biochar;Cu(II);Modelling;Sorption;Tetracycline
摘要：
Highly efficient simultaneous removal of Cu(II) and tetracycline (TET) from aqueous solution was accomplished by iron and zinc doped sawdust biochar (Fe/Zn-biochar). The mutual effects and inner mechanisms of their adsorption onto Fe/Zn-biochar were systematically investigated via sole and binary systems, sorption isotherm and adsorption kinetics models. The liquid-film diffusion step might be the rate-limiting step for tetracycline, the interaction of Cu(II) was more likely controlled by both intra particle diffusion model and liquid film diffusion model. The fitting of experimental data with kinetic models, Temkin model indicates that the adsorption process of tetracycline and Cu(II) involve chemisorption, and physico-chemical adsorption, respectively. There exists site competition and enhancement of Cu(II) and tetracycline on the sorption to Fe/Zn-biochar. The results of this study indicate that modification of biochar derived from sawdust shows great potential for simultaneous removal of Cu(II) and tetracycline from co-contaminated water. © 2017 Elsevier Ltd
语种：
英文
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Adsorption of phosphate from aqueous solution using iron-zirconium modified activated carbon nanofiber: Performance and mechanism
作者：
Xiong, Weiping;Tong, Jing;Yang, Zhaohui* ;Zeng, Guangming* ;Zhou, Yaoyu;...
期刊：
Journal of Colloid and Interface Science ,2017年493:17-23 ISSN：0021-9797
通讯作者：
Yang, Zhaohui;Zeng, Guangming
作者机构：
[Yang, Zhaohui; Song, Peipei; Zeng, Guangming; Xu, Rui; Tong, Jing; Zhang, Chen; Wang, Dongbo; Xiong, Weiping; Cheng, Min; Yang, ZH; Zeng, GM] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.;[Yang, Zhaohui; Song, Peipei; Zeng, Guangming; Xu, Rui; Tong, Jing; Zhang, Chen; Wang, Dongbo; Xiong, Weiping; Cheng, Min] Hunan Univ, Minist Educ, Key Lab Environm Biol & Pollut Control, Changsha 410082, Hunan, Peoples R China.;[Zhou, Yaoyu] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Yang, ZH; Zeng, GM] H;Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.
关键词：
Phosphate;Adsorption;Iron;Zirconium;Activated carbon nanofiber
摘要：
Phosphate (P) removal is significant for the prevention of eutrophication in natural waters. In this paper, a novel adsorbent for the removal of P from aqueous solution was synthesized by loading zirconium oxide and iron oxide onto activated carbon nanofiber (ACF-ZrFe) simultaneously. The adsorbent was characterized by scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy and X-ray photoelectron spectroscopy (XPS). The results showed that P adsorption was highly pH dependent and the optimum pH was found to be 4.0. The isotherm of adsorption could be well described by the Langmuir model and the maximum P adsorption capacity was estimated to be 26.3 mg P/g at 25 °C. The kinetic data were well fitted to the pseudo-second-order equation, indicating that chemical sorption was the rate-limiting step. Moreover, co-existing ions including sulfate (SO<inf>4</inf><sup>2−</sup>), chloride (Cl<sup>−</sup>), nitrate (NO<inf>3</inf><sup>−</sup>) and fluoride (F<sup>−</sup>) exhibited a distinct effect on P adsorption with the order of F<sup>−</sup> > NO<inf>3</inf><sup>−</sup> > Cl<sup>−</sup> > SO<inf>4</inf><sup>2−</sup>. Further investigations by FT-IR spectroscopy and pH variations associated with the adsorption process revealed that ligands exchange and electrostatic interactions were the dominant mechanisms for P adsorption. The findings reported in this work highlight the potential of using ACF-ZrFe as an effective adsorbent for the removal of P in natural waters. ©2017
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英文
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Atomic scale g-C3N4/Bi2WO6 2D/2D heterojunction with enhanced photocatalytic degradation of ibuprofen under visible light irradiation
作者：
Wang, Jiajia;Tang, Lin* ;Zeng, Guangming;Deng, Yaocheng;Liu, Yani;...
期刊：
Applied Catalysis B: Environmental ,2017年209:285-294 ISSN：0926-3373
通讯作者：
Tang, Lin
作者机构：
[Wang, Jiajia; Zeng, Guangming; Deng, Yaocheng; Guo, Zhi; Tang, Lin; Wang, Jingjing; Liu, Yani; Zhang, Chen] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.;[Wang, Jiajia; Zeng, Guangming; Deng, Yaocheng; Guo, Zhi; Tang, Lin; Wang, Jingjing; Liu, Yani; Zhang, Chen] Hunan Univ, Key Lab Environm Biol & Pollut Control, Minist Educ, Changsha 410082, Hunan, Peoples R China.;[Wang, Longlu] Hunan Univ, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.;[Zhou, Yaoyu] Hunan Agr Univ, Coll Resources & Environm, Changsha 410082, Hunan, Peoples R China.
通讯机构：
[Tang, Lin] H;Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.
关键词：
2D/2D heterojunction;Atomic scale;Monolayer Bi2WO6;Photocatalysis;Ultrathin g-C3N4 nanosheets
摘要：
Although photocatalytic degradation is an ideal strategy for cleaning environmental pollution, it remains challenging to construct a highly efficient photocatalytic system by steering the charge flow in a precise manner. In this study, a novel atomic scale g-C3N4/Bi2WO6 heterojunction (UTCB) constructed by ultrathin g-C3N4 nanosheets (ug-CN) and monolayer Bi2WO6 nanosheets (m-BWO) was successfully prepared by hydrothermal reaction. The UTCB heterojunctions were characterized by various techniques including XRD, TEM, AFM, BET measurements, UV–vis spectrometry, and XPS. The results indicated that UTCB heterojunctions were assembly of m-BWO on ug-CN and presented high separation efficiency of photogenerated carriers. Under visible light irradiation, the optimum molar ratio of ug-CN/m-BWO (1:4, UTCB-25) reached almost 96.1% removal efficiency of IBF within 1h, which was about 2.7 times as that of pure m-BWO. The photocatalytic mechanisms of UTCB-25 were revealed, suggesting that the synergistic effect of UTCB-25 heterojunction with strong interfacial interaction promoted the photoinduced charge separation. According to the LC–MS/MS, five photodegradation pathways of IBF under visible light irradiation were proposed. This study could open new opportunities for the rational design and a better understanding of atomic scale two dimensions/two dimensions (2D/2D) heterojunctions in environmental or other applications. © 2017 Elsevier B.V.
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英文
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Graphitized Carbon Fibers as Multifunctional 3D Current Collectors for High Areal Capacity Li Anodes
作者：
Zuo, Tong-Tong;Wu, Xiong-Wei* ;Yang, Chun-Peng;Yin, Ya-Xia;Ye, Huan;...
期刊：
Advanced Materials ,2017年29(29):1700389- ISSN：0935-9648
通讯作者：
Guo, Yu-Guo;Wu, Xiong-Wei
作者机构：
[Zuo, Tong-Tong; Ye, Huan; Li, Nian-Wu; Yin, Ya-Xia; Yang, Chun-Peng; Guo, Yu-Guo] Chinese Acad Sci, Inst Chem, CAS Res Educ Ctr Excellence Mol Sci, CAS Key Lab Mol Nanostruct & Nanotechnol, Beijing 100190, Peoples R China.;[Wu, Xiong-Wei] Hunan Agr Univ, Coll Sci, Changsha 410128, Hunan, Peoples R China.;[Zuo, Tong-Tong; Ye, Huan; Yin, Ya-Xia; Guo, Yu-Guo] Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China.
通讯机构：
[Guo, Yu-Guo] C;[Wu, Xiong-Wei] H;[Guo, Yu-Guo] U;Chinese Acad Sci, Inst Chem, CAS Res Educ Ctr Excellence Mol Sci, CAS Key Lab Mol Nanostruct & Nanotechnol, Beijing 100190, Peoples R China.;Hunan Agr Univ, Coll Sci, Changsha 410128, Hunan, Peoples R China.
关键词：
3D current collectors;graphitized carbon fibers;high areal capacity;lithium anodes
摘要：
The Li metal anode has long been considered as one of the most ideal anodes due to its high energy density. However, safety concerns, low efficiency, and huge volume change are severe hurdles to the practical application of Li metal anodes, especially in the case of high areal capacity. Here it is shown that that graphitized carbon fibers (GCF) electrode can serve as a multifunctional 3D current collector to enhance the Li storage capacity. The GCF electrode can store a huge amount of Li via intercalation and electrodeposition reactions. The as-obtained anode can deliver an areal capacity as high as 8 mA h cm−2 and exhibits no obvious dendritic formation. In addition, the enlarged surface area and porous framework of the GCF electrode result in lower local current density and mitigate high volume change during cycling. Thus, the Li composite anode displays low voltage hysteresis, high plating/stripping efficiency, and long lifespan. The multifunctional 3D current collector promisingly provides a new strategy for promoting the cycling lifespan of high areal capacity Li anodes. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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英文
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Metal-free carbon materials-catalyzed sulfate radical-based advanced oxidation processes: A review on heterogeneous catalysts and applications
作者：
Zhao, Qingxia;Mao, Qiming;Zhou, Yaoyu* ;Wei, Jianhong* ;Liu, Xiaocheng;...
期刊：
Chemosphere ,2017年189(Dec.):224-238 ISSN：0045-6535
通讯作者：
Zhou, Yaoyu;Wei, Jianhong
作者机构：
[Liu, Xiaocheng; Mao, Qiming; Yang, Junying; Zhao, Qingxia; Zhou, Yaoyu; Zhang, Jiachao; Luo, Lin] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Wei, Jianhong] Hunan Agr Univ, Coll Biol Sci & Technol, Changsha 410128, Hunan, Peoples R China.;[Chen, Hong] Changsha Univ Sci & Technol, Sch Hydraul Engn, Changsha 410004, Hunan, Peoples R China.;[Chen, Hongbo] Xiangtan Univ, Coll Environm & Resources, Xiangtan 411105, Peoples R China.;[Tang, Lin] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.
通讯机构：
[Zhou, Yaoyu; Wei, Jianhong] H;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;Hunan Agr Univ, Coll Biol Sci & Technol, Changsha 410128, Hunan, Peoples R China.
关键词：
Advanced oxidation processes;Carbon materials;Sulfate radical;Metal-free catalyst;Heterogeneous
摘要：
In recent years, advanced oxidation processes (AOPs), especially sulfate radical based AOPs have been widely used in various fields of wastewater treatment due to their capability and adaptability in decontamination. Recently, metal-free carbon materials catalysts in sulfate radical production has been more and more concerned because these materials have been demonstrated to be promising alternatives to conventional metal-based catalysts, but the review of metal-free catalysts is rare. The present review outlines the current state of knowledge on the generation of sulfate radical using metal-free catalysts including carbon nanotubes, graphene, mesoporous carbon, activated carbon, activated carbon fiber, nanodiamond. The mechanism such as the radical pathway and non-radical pathway, and factors influencing of the activation of sulfate radical was also be revealed. Knowledge gaps and research needs have been identified, which include the perspectives on challenges related to metal-free catalyst, heterogeneous metal-free catalyst/persulfate systems and their potential in practical environmental remediation. © 2017 Elsevier Ltd
语种：
英文
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A visual application of gold nanoparticles: Simple, reliable and sensitive detection of kanamycin based on hydrogen-bonding recognition
作者：
Qin, Lei;Zeng, Guangming* ;Lai, Cui* ;Huang, Danlian;Zhang, Chen;...
期刊：
Sensors and Actuators B-Chemical ,2017年243:946-954 ISSN：0925-4005
通讯作者：
Zeng, Guangming;Lai, Cui
作者机构：
[Huang, Danlian; Liu, Xigui; Xu, Piao; Zhang, Chen; Liu, Yang; Hu, Liang; Cheng, Min; Lai, Cui; Zeng, Guangming; Qin, Lei; Hu, Tianjue] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.;[Huang, Danlian; Liu, Xigui; Xu, Piao; Zhang, Chen; Liu, Yang; Hu, Liang; Cheng, Min; Lai, Cui; Zeng, Guangming; Qin, Lei; Hu, Tianjue] Hunan Univ, Key Lab Environm Biol & Pollut Control, Minist Educ, Changsha 410082, Hunan, Peoples R China.;[Zhou, Yaoyu] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Zeng, GM; Lai, C] H;Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.
关键词：
4-Amino-3-hydrazino-5-mercapto-1, 2, 4-triazole;Colorimetric;Gold nanoparticles;Hydrogen-bonding recognition;Kanamycin;Sensor
摘要：
The authors here described a visual detection strategy employing 4-amino-3-hydrazino-5-mercapto1, 2, 4-triazole (AHMT) functionalized gold nanoparticles (AuNPs) to detect kanamycin (KA) in various samples. The AHMT with mercapto group was self-assembled onto the surface of AuNPs and the AHMT functionalized AuNPs (AHMT-AuNPs) aggregated when ICA existed owing to the hydrogen-bonding interaction between KA and AHMT. As a result, the color of the AHMT-AuNPs solution changed from wine red-to-deep purple with the increasing concentration of KA. Taking advantage of the hydrogen-bonding interaction, KA could be quantitatively detected by the proposed sensor in the range of 0.005-0.1 mu M and 0.1-20 mu M, with the detection limit as low as 0.004 mu M which is much lower than the maximum contamination level for KA in milk defined by the European Union. Furthermore, the proposed sensor was not affected by the interference chemicals including common amine acid, antibiotics, and metal ions. The sensor was also used to detect KA from various real samples, and the results were excellent in accord with the values measured by the high performance liquid chromatography (HPLC). This sensor exhibited a promising potential for simple and real-time detection of KA in various real samples. (C) 2016 Elsevier B.V. All rights reserved.
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英文
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Insight into highly efficient simultaneous photocatalytic removal of Cr(VI) and 2,4-diclorophenol under visible light irradiation by phosphorus doped porous ultrathin g-C3 N4 nanosheets from aqueous media: Performance and reaction mechanism
作者：
Deng, Yaocheng;Tang, Lin* ;Zeng, Guangming* ;Zhu, Zhejing;Yan, Ming;...
期刊：
Applied Catalysis B: Environmental ,2017年203:343-354 ISSN：0926-3373
通讯作者：
Tang, Lin;Zeng, Guangming
作者机构：
[Zeng, Guangming; Wang, Jiajia; Deng, Yaocheng; Zhu, Zhejing; Tang, Lin; Wang, Jingjing; Liu, Yani; Yan, Ming; Tang, L; Zeng, GM] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.;[Zeng, Guangming; Wang, Jiajia; Deng, Yaocheng; Zhu, Zhejing; Tang, Lin; Wang, Jingjing; Liu, Yani; Yan, Ming] Hunan Univ, Minist Educ, Key Lab Environm Biol & Pollut Control, Changsha 410082, Hunan, Peoples R China.;[Zhou, Yaoyu] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Tang, L; Zeng, GM] H;Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.
关键词：
2,4-Diclorophenol oxidation;Cr(VI) reduction;g-C3N4;Phosphorus doping;Pores and nanosheets
摘要：
Carbon nitride (g-C3N4) has attracted great attention for its wide applications in hydrogen evolution and photocatalytic degradation. In this study, phosphorus doped porous ultrathin carbon nitride nanosheets (PCN-S) were prepared successfully via the element doping and thermal exfoliation method. The prepared PCN-S was characterized by XRD, SEM, TEM, N2-adsorption-desorption measurement, FT-IR, XPS, UV–vis diffuse reflectance spectra, photoluminescence (PL), photocurrent response (I-t) and EIS. The results show that PCN-S owns regular crystal structure of g-C3N4, large specific surface areas and nanosheet structure with lots of in-plane pores on its surface, excellent chemical stability, and broad light response to the whole visible light region, which was attributed to the doping of phosphorus element. Under visible light irradiation, the photocatalytic reduction of Cr(VI) over different samples indicated that the P doping and porous nanosheet structure play an important role for the enhanced performance of PCN-S. The reason was that P element doping can broaden the visible light response region, and large specific surface areas from the porous nanosheet structure can provide quantities of active sites for the photocatalytic reaction. Then the detailed study on the PCN-S for simultaneous photocatalytic reduction of Cr(VI) and oxidation of 2,4-diclorophenol (2,4-DCP) was conducted. The experiments results show that low pH value and enough dissolved oxygen were found to promote Cr(VI) reduction and 2,4-DCP oxidation. The detailed photocatalytic mechanism was proposed. The strategies used in this study could provide new insight into the design of g-C3N4 based materials with high photocatalytic activity, and present potential for the treatment of Cr(VI)/2,4-DCP or other mixed pollutants in wastewater. © 2016 Elsevier B.V.
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英文
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Biochars with excellent Pb(II) adsorption property produced from fresh and dehydrated banana peels via hydrothermal carbonization
作者：
Zhou, Nan;Chen, Honggang;Xi, Junting;Yao, Denghui;Zhou, Zhi* ;...
期刊：
Bioresource Technology ,2017年232:204-210 ISSN：0960-8524
通讯作者：
Zhou, Zhi
作者机构：
[Chen, Honggang; Zhou, Nan; Zhou, Zhi; Yao, Denghui] Hunan Agr Univ, Coll Sci, Changsha 410128, Hunan, Peoples R China.;[Xi, Junting] China Pharmaceut Univ, Sch Sci, Nanjing 211198, Jiangsu, Peoples R China.;[Tian, Yun; Lu, Xiangyang] Hunan Agr Univ, Coll Biosci & Biotechnol, Changsha 410128, Hunan, Peoples R China.;[Tian, Yun; Lu, Xiangyang] Hunan Agr Univ, Hunan Prov Univ Key Lab Agr Biochem & Biotransfor, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Zhou, Zhi] H;Hunan Agr Univ, Coll Sci, Changsha 410128, Hunan, Peoples R China.
关键词：
Banana peel;Biochar;Hydrothermal carbonization;Lead removal
摘要：
Fresh and dehydrated banana peels were used as biomass feedstock to produce highly effective sorbent biochars through a facile one-step hydrothermal carbonization approach with 20%vol phosphoric acid as the reaction medium. The elemental ratio of oxygen content of the two as-prepared biochars were about 20%, and the FT-IR analysis confirmed the existence of abundant surface functional groups such as hydroxyl and carboxyl which greatly enhanced the adsorption performance. The sorbents showed excellent lead clarification capability of 359mg·g−1and 193mg·g−1for dehydrated and fresh banana peels based biochars, respectively. The change of the C[dbnd]O/O–C[dbnd]O and the appearance of Pb–O/Pb–O–C on the surface after adsorption confirmed that the ion exchange might be the dominant mechanism. The dehydration and pulverization pre-treatment and the addition of phosphoric acid can benefit the formation of those functional groups and hydrothermal carbonization can be a promising method to transfer biomass like fruit peels into biochars with excellent adsorption performance. © 2017 Elsevier Ltd
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英文
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Latest advances in supercapacitors: From new electrode materials to novel device designs
作者：
Wang, Faxing;Wu, Xiongwei;Yuan, Xinhai;Liu, Zaichun;Zhang, Yi;...
期刊：
CHEMICAL SOCIETY REVIEWS ,2017年46(22):6816-6854 ISSN：0306-0012
通讯作者：
Fu, Lijun;Wu, Yuping;Zhou, Qingming
作者机构：
[Fu, Lijun; Wu, Yuping; Yuan, Xinhai; Liu, Zaichun; Wu, Xiongwei; Wang, Faxing; Huang, Wei; Zhu, Yusong; Zhang, Yi] Nanjing Tech Univ, Sch Energy Sci & Engn, Nanjing 211816, Jiangsu, Peoples R China.;[Fu, Lijun; Wu, Yuping; Yuan, Xinhai; Liu, Zaichun; Wu, Xiongwei; Wang, Faxing; Huang, Wei; Zhu, Yusong; Zhang, Yi] Nanjing Tech Univ, Inst Adv Mat, Nanjing 211816, Jiangsu, Peoples R China.;[Wang, Faxing; Wu, Yuping] Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China.;[Wang, Faxing; Wu, Yuping] Fudan Univ, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200433, Peoples R China.;[Wang, Faxing] Tech Univ Dresden, Dept Chem & Food Chem, D-01062 Dresden, Germany.
通讯机构：
[Fu, LJ; Wu, YP] N;[Wu, Yuping] F;[Zhou, Qingming] H;Nanjing Tech Univ, Sch Energy Sci & Engn, Nanjing 211816, Jiangsu, Peoples R China.;Nanjing Tech Univ, Inst Adv Mat, Nanjing 211816, Jiangsu, Peoples R China.
摘要：
Notably, many significant breakthroughs for a new generation of supercapacitors have been reported in recent years, related to theoretical understanding, material synthesis and device designs. Herein, we summarize the state-of-the-art progress toward mechanisms, new materials, and novel device designs for supercapacitors. Firstly, fundamental understanding of the mechanism is mainly focused on the relationship between the structural properties of electrode materials and their electrochemical performances based on some in situ characterization techniques and simulations. Secondly, some emerging electrode materials are discussed, including metal–organic frameworks (MOFs), covalent organic frameworks (COFs), MXenes, metal nitrides, black phosphorus, LaMnO3, and RbAg4I5/graphite. Thirdly, the device innovations for the next generation of supercapacitors are provided successively, mainly emphasizing flow supercapacitors, alternating current (AC) line-filtering supercapacitors, redox electrolyte enhanced supercapacitors, metal ion hybrid supercapacitors, micro-supercapacitors (fiber, plane and three-dimensional) and multifunctional supercapacitors including electrochromic supercapacitors, self-healing supercapacitors, piezoelectric supercapacitors, shape-memory supercapacitors, thermal self-protective supercapacitors, thermal self-charging supercapacitors, and photo self-charging supercapacitors. Finally, the future developments and key technical challenges are highlighted regarding further research in this thriving field.
语种：
英文
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Plasmonic Bi Metal Deposition and g-C3 N4 Coating on Bi2 WO6 Microspheres for Efficient Visible-Light Photocatalysis
作者：
Wang, Jiajia;Tang, Lin* ;Zeng, Guangming* ;Liu, Yani;Zhou, Yaoyu;...
期刊：
ACS SUSTAINABLE CHEMISTRY & ENGINEERING ,2017年5(1):1062-1072 ISSN：2168-0485
通讯作者：
Tang, Lin;Zeng, Guangming
作者机构：
[Wang, Jiajia; Zeng, Guangming; Deng, Yaocheng; Tang, Lin; Wang, Jingjing; Peng, Bo; Liu, Yani; Tang, L; Zeng, GM] Hunan Univ, Coll Environm Sci & Engn, 8 South Lushan Rd, Changsha 410082, Hunan, Peoples R China.;[Wang, Jiajia; Zeng, Guangming; Deng, Yaocheng; Tang, Lin; Wang, Jingjing; Peng, Bo; Liu, Yani; Tang, L; Zeng, GM] Hunan Univ, Key Lab Environm Biol & Pollut Control, Minist Educ, 8 South Lushan Rd, Changsha 410082, Hunan, Peoples R China.;[Zhou, Yaoyu] Hunan Agr Univ, Coll Resources & Environm, 1 Agr Univ Rd, Changsha 410128, Hunan, Peoples R China.
通讯机构：
[Tang, L; Zeng, GM] H;Hunan Univ, Coll Environm Sci & Engn, 8 South Lushan Rd, Changsha 410082, Hunan, Peoples R China.;Hunan Univ, Key Lab Environm Biol & Pollut Control, Minist Educ, 8 South Lushan Rd, Changsha 410082, Hunan, Peoples R China.
关键词：
plasmonic Bi metal;g-C3N4;Bi2WO6 microspheres;SPR effect;charge separation
摘要：
A low-cost semiconductor-based photocatalyst using visible light energy has attracted increasing interest for energy generation and environmental remediation. Herein, plasmonic Bi metal was deposited in situ in g-C<inf>3</inf>N<inf>4</inf>@Bi<inf>2</inf>WO<inf>6</inf>microspheres via a hydrothermal method. As an electron-conduction bridge, metallic Bi was inserted as the interlayer between g-C<inf>3</inf>N<inf>4</inf>and the surface of Bi<inf>2</inf>WO<inf>6</inf>microspheres to enhance visible light absorption due to the surface plasmon resonance (SPR) effect and facilitate efficient electron-carrier separation. Different characterization techniques, including XRD, SEM, TEM, UV-vis, XPS, photoluminescence, and photocurrent generation, were employed to investigate the morphology and optical properties of the as-prepared samples. The results indicated that the g-C<inf>3</inf>N<inf>4</inf>(20%)@Bi@Bi<inf>2</inf>WO<inf>6</inf>microsphere sample exhibited an extraordinary enhanced photocatalytic activity, higher than those of the g-C<inf>3</inf>N<inf>4</inf>, Bi<inf>2</inf>WO<inf>6</inf>, and g-C<inf>3</inf>N<inf>4</inf>(20%)@Bi<inf>2</inf>WO<inf>6</inf>samples. It implies that the heterostructured combination of g-C<inf>3</inf>N<inf>4</inf>, metallic Bi, and Bi<inf>2</inf>WO<inf>6</inf>microspheres provided synergistic photocatalytic activity via an efficient electron transfer process. On the basis of the results, a possible photocatalytic mechanism of the as-prepared samples was proposed. The present study demonstrated the feasibility of utilizing low-cost metallic Bi as a substitute for noble metals to design a doped photocatalysis composite with enhanced photocatalytic performance. ©2016 American Chemical Society.
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英文
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Knockout of OsNramp5 using the CRISPR/Cas9 system produces low Cd-accumulating indica rice without compromising yield
作者：
Tang, Li;Mao, Bigang;Li, Yaokui;Lv, Qiming;Zhang, LiPing;...
期刊：
Scientific Reports ,2017年7(1):14438 ISSN：2045-2322
通讯作者：
Xia, Shitou;Zhao, Bingran;Li, Hongqing
作者机构：
[Tang, Li; Xia, Shitou; Zeng, Xiongfeng] Hunan Agr Univ, Coll Biosci & Biotechnol, Hunan Prov Key Lab Phytohormones & Growth Dev, Changsha 410128, Hunan, Peoples R China.;[Peng, Yan; Tang, Li; Shao, Ye; Zhao, Bingran; He, Hanjie; Lv, Qiming; Li, Yaokui; Pan, Yinlin; Wang, Weiping; Fu, Xiqin; Mao, Bigang; Hu, Yuanyi] Hunan Hybrid Rice Res Ctr, State Key Lab Hybrid Rice, Changsha 410125, Hunan, Peoples R China.;[Zhang, LiPing; Chen, Caiyan] Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Hunan, Peoples R China.;[He, Hanjie] Cent South Univ Forestry & Technol, Hunan Prov Key Lab Forestry Biotechnol, Changsha 410004, Hunan, Peoples R China.;[Li, Hongqing] South China Normal Univ, Guangdong Prov Key Lab Biotechnol Plant Dev, Guangzhou 510631, Guangdong, Peoples R China.
通讯机构：
[Xia, Shitou; Zhao, Bingran] H;[Li, Hongqing] S;Hunan Agr Univ, Coll Biosci & Biotechnol, Hunan Prov Key Lab Phytohormones & Growth Dev, Changsha 410128, Hunan, Peoples R China.;Hunan Hybrid Rice Res Ctr, State Key Lab Hybrid Rice, Changsha 410125, Hunan, Peoples R China.;South China Normal Univ, Guangdong Prov Key Lab Biotechnol Plant Dev, Guangzhou 510631, Guangdong, Peoples R China.
摘要：
Rice grain with excessive cadmium (Cd) is a major source of dietary Cd intake and a serious threat to health for people who consume rice as a staple food. The development of elite rice cultivars with consistently low Cd content is challenging for conventional breeding approaches, and new strategies urgently need to be developed. Here, we report the development of new indica rice lines with low Cd accumulation and no transgenes by knocking out the metal transporter gene OsNramp5 using CRISPR/Cas9 system. Hydroponic culture showed that Cd concentrations in shoots and roots of osnramp5 mutants were dramatically decreased, resulting in rescue of impaired growth in high Cd condition. Cd-contaminated paddy field trials demonstrated that Cd concentration in osnramp5 grains was consistently less than 0.05 mg/kg, in contrast to high Cd concentrations from 0.33 mg/kg to 2.90 mg/kg in grains of Huazhan (the wild-type indica rice). In particular, the plant yield was not significantly affected in osnramp5 mutants. Furthermore, we developed promising hybrid rice lines with extremely low Cd content in grains. Our work supplies a practical approach to developing Cd pollution-safe indica rice cultivars that minimizes Cd contamination risk in grains.
语种：
英文
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Insight into highly efficient co-removal of p-nitrophenol and lead by nitrogen-functionalized magnetic ordered mesoporous carbon: Performance and modelling
作者：
Zhou, Yaoyu;Liu, Xiaocheng;Tang, Lin* ;Zhang, Fengfeng;Zeng, Guangming;...
期刊：
Journal of Hazardous Materials ,2017年333:80-87 ISSN：0304-3894
通讯作者：
Tang, Lin
作者机构：
[Liu, Xiaocheng; Zhang, Fengfeng; Peng, Xiangqi; Zhou, Yaoyu; Zhang, Jiachao; Luo, Lin] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Zeng, Guangming; Tang, Lin; Zhou, Yaoyu; Deng, Yaochen] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.;[Zeng, Guangming; Tang, Lin; Deng, Yaochen] Hunan Univ, Key Lab Environm Biol & Pollut Control, Minist Educ, Changsha 410082, Hunan, Peoples R China.;[Pang, Ya] Changsha Coll, Dept Biotechnol & Environm Sci, Changsha 410003, Hunan, Peoples R China.
通讯机构：
[Tang, Lin] H;Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.
关键词：
Lead;Modelling;Ordered mesoporous carbon;Sorption;p-nitrophenol
摘要：
Highly efficient simultaneous removal of Pb(II) and p-nitrophenol (PNP) contamination from water was accomplished by nitrogen-functionalized magnetic ordered mesoporous carbon (N-Fe/OMC). The mutual effects and inner mechanisms of their adsorption onto N-Fe/OMC were systematically investigated by sole and binary systems, and thermodynamic, sorption isotherm and adsorption kinetics models. The liquid-film diffusion step might be the rate-limiting step for PNP and Pb(II). The fitting of experimental data with Temkin model indicates that the adsorption process of PNP and Pb(II) involve physisorption and chemisorption. There exist site competition and enhancement of PNP and Pb(II) on the sorption to N-Fe/OMC. Moreover, N-Fe/OMC could be regenerated effectively and recycled by using dilute NaOH and acetone. These demonstrated superior properties of N-Fe/OMC indicate that it could be applied to treatment of wastewaters containing both lead and PNP.
语种：
英文
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Remediation of Heavy Metal-Polluted Agricultural Soils Using Clay Minerals: A Review
作者：
Xu Yi;Liang Xuefeng* ;Xu Yingming;Qin Xu;Huang Qingqing;...
期刊：
土壤圈(英文版) ,2017年27(2):193-204 ISSN：1002-0160
通讯作者：
Liang Xuefeng
作者机构：
[Xu Yi] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.;[Huang Qingqing; Qin Xu; Wang Lin; Xu Yingming; Sun Yuebing; Liang Xuefeng] Minist Agr, Agroenvironm Protect Inst, Innovat Team Remediat Heavy Met Contaminated Farm, Tianjin 300191, Peoples R China.;[Huang Qingqing; Qin Xu; Wang Lin; Xu Yingming; Sun Yuebing; Liang Xuefeng] MOA, Key Lab Original Environm Qual, Tianjin Key Lab Agroenvironm & Agroprod Safety, Tianjin 300191, Peoples R China.
通讯机构：
[Liang Xuefeng] M;Minist Agr, Agroenvironm Protect Inst, Innovat Team Remediat Heavy Met Contaminated Farm, Tianjin 300191, Peoples R China.;MOA, Key Lab Original Environm Qual, Tianjin Key Lab Agroenvironm & Agroprod Safety, Tianjin 300191, Peoples R China.
关键词：
bentonite;bioavailability;immobilization;liming effect;palygorskite;sepiolite;soil pH
摘要：
Heavy metal contamination of agricultural soils poses risks and hazards to humans. The remediation of heavy metal-polluted soils has become a hot topic in environmental science and engineering. In this review, the application of clay minerals for the remediation of heavy metal-polluted agricultural soils is summarized, in terms of their remediation effects and mechanisms, influencing factors, and future focus. Typical clay minerals, natural sepiolite, palygorskite, and bentonite, have been widely utilized for the in-situ immobilization of heavy metals in soils, especially Cd-polluted paddy soils and wastewater-irrigated farmland soils. Clay minerals are able to increase soil pH, decrease the chemical-extractable fractions and bioavailability of heavy metals in soils, and reduce the heavy metal contents in edible parts of plants. The immobilization effects have been confirmed in field-scale demonstrations and pot trials. Clay minerals can improve the environmental quality of soils and alleviate the hazards of heavy metals to plants. As main factors affecting the immobilization effects, the pH and water condition of soils have drawn academic attention. The remediation mechanisms mainly include liming, precipitation, and sorption effects. However, the molecular mechanisms of microscopic immobilization are unclear. Future studies should focus on the long-term stability and improvement of clay minerals in order to obtain a better remediation effect.
语种：
英文
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Distinct Geographical Distribution of the Miscanthus Accessions with Varied Biomass Enzymatic Saccharification
作者：
Li, Xukai;Liao, Haofeng;Fan, Chunfen;Hu, Huizhen;Li, Ying;...
期刊：
PLOS ONE ,2016年11(8):e0160026- ISSN：1932-6203
通讯作者：
Tu, Yuanyuan
作者机构：
[Liao, Haofeng; Peng, Liangcai; Li, Ying; Hu, Huizhen; Fan, Chunfen; Tu, Yuanyuan; Li, Xukai] Huazhong Agr Univ, Biomass & Bioenergy Res Ctr, Wuhan, Peoples R China.;[Liao, Haofeng; Peng, Liangcai; Li, Ying; Hu, Huizhen; Fan, Chunfen; Tu, Yuanyuan; Li, Xukai] Huazhong Agr Univ, Natl Key Lab Crop Genet Improvement, Wuhan, Peoples R China.;[Liao, Haofeng; Peng, Liangcai; Li, Ying; Hu, Huizhen; Fan, Chunfen; Li, Jing; Tu, Yuanyuan; Li, Xukai] Huazhong Agr Univ, Coll Plant Sci & Technol, Wuhan, Peoples R China.;[Yi, Zili] Hunan Agr Univ, Dept Biotechnol, Changsha, Hunan, Peoples R China.;[Cai, Xiwen] North Dakota State Univ, Dept Plant Sci, Fargo, ND 58105 USA.
通讯机构：
[Tu, Yuanyuan] H;Huazhong Agr Univ, Biomass & Bioenergy Res Ctr, Wuhan, Peoples R China.;Huazhong Agr Univ, Natl Key Lab Crop Genet Improvement, Wuhan, Peoples R China.;Huazhong Agr Univ, Coll Plant Sci & Technol, Wuhan, Peoples R China.
关键词：
Lignin;Cellulose;Plant cell walls;Geographic distribution;Polymers;Hydrolysis;Hexoses;Insolation
摘要：
Miscanthus is a leading bioenergy candidate for biofuels, and it thus becomes essential to characterize the desire natural Miscanthus germplasm accessions with high biomass saccharification. In this study, total 171 natural Miscanthus accessions were geographically mapped using public database. According to the equation [P(H/L| East) = P(H/L∩East)/P(East)], the probability (P) parameters were calculated on relationships between geographical distributions of Miscanthus accessions in the East of China, and related factors with high(H) or low(L) values including biomass saccahrification under 1% NaOH and 1% H2SO4 pretreatments, lignocellulose features and climate conditions. Based on the maximum P value, a golden cutting line was generated from 42°25’ N, 108°22’ E to 22°58’ N, 116°28’ E on the original locations of Miscanthus accessions with high P(H|East) values (0.800–0.813), indicating that more than 90% Miscanthus accessions were originally located in the East with high biomass saccharification. Furthermore, the averaged insolation showed high P (H|East) and P(East|H) values at 0.782 and 0.754, whereas other climate factors had low P(East|H) values, suggesting that the averaged insolation is unique factor on Miscanthus distributions for biomass saccharification. In terms of cell wall compositions and wall polymer features, both hemicelluloses level and cellulose crystallinity (CrI) of Miscanthus accessions exhibited relative high P values, suggesting that they should be the major factors accounting for geographic distributions of Miscanthus accessions with high biomass digestibility.
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英文
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Convergence and divergence of bitterness biosynthesis and regulation in Cucurbitaceae
作者：
Zhou, Yuan;Ma, Yongshuo;Zeng, Jianguo;Duan, Lixin;Xue, Xiaofeng;...
期刊：
NATURE PLANTS ,2016年2(12):16183 ISSN：2055-026X
通讯作者：
Shang, Yi;Huang, Sanwen
作者机构：
[Zhang, Huimin; Lin, Tao; Huang, Sanwen; Shang, Yi; Huang, SW; Liu, Xinyan; Zhang, Zhonghua; Wang, Huaisong; Zhong, Yang; Liu, Min; Zhou, Yuan; Ma, Yongshuo; Zhang, Shu] Chinese Acad Agr Sci, Inst Vegetables & Flowers, Key Lab Biol & Genet Improvement Hort Crops, Minist Agr,Sinodutch Joint Lab Hort Genom, Beijing 100081, Peoples R China.;[Lin, Tao; Huang, Sanwen; Shang, Yi; Huang, SW; Zhou, Yuan] Chinese Acad Agr Sci, Agr Genome Inst Shenzhen, Shenzhen 518124, Peoples R China.;[Liu, Xiubin; Zeng, Jianguo; Zhou, Yuan; Huang, Peng] Hunan Agr Univ, Hort & Landscape Coll, Natl Chinese Med Herbs Hunan Technol Ctr, Changsha 410000, Hunan, Peoples R China.;[Duan, Lixin] Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China.;[Xue, Xiaofeng] Chinese Acad Agr Sci, Inst Apiculture Res, Beijing 100093, Peoples R China.
通讯机构：
[Shang, Y; Huang, SW] C;Chinese Acad Agr Sci, Inst Vegetables & Flowers, Key Lab Biol & Genet Improvement Hort Crops, Minist Agr,Sinodutch Joint Lab Hort Genom, Beijing 100081, Peoples R China.;Chinese Acad Agr Sci, Agr Genome Inst Shenzhen, Shenzhen 518124, Peoples R China.
摘要：
Differentiation of secondary metabolite profiles in closely related plant species provides clues for unravelling biosynthetic pathways and regulatory circuits, an area that is still underinvestigated. Cucurbitacins, a group of bitter and highly oxygenated tetracyclic triterpenes, are mainly produced by the plant family Cucurbitaceae. These compounds have similar structures, but differ in their antitumour activities and ecophysiological roles. By comparative analyses of the genomes of cucumber, melon and watermelon, we uncovered conserved syntenic loci encoding metabolic genes for distinct cucurbitacins. Characterization of the cytochrome P450s (CYPs) identified from these loci enabled us to unveil a novel multi-oxidation CYP for the tailoring of the cucurbitacin core skeleton as well as two other CYPs responsible for the key structural variations among cucurbitacins C, B and E. We also discovered a syntenic gene cluster of transcription factors that regulates the tissue-specific biosynthesis of cucurbitacins and may confer the loss of bitterness phenotypes associated with convergent domestication of wild cucurbits. This study illustrates the potential to exploit comparative genomics to identify enzymes and transcription factors that control the biosynthesis of structurally related yet unique natural products. © 2016 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.
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英文
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Nanostructured positive electrode materials for post-lithium ion batteries
作者：
Wang, Faxing;Wu, Xiongwei;Li, Chunyang;Zhu, Yusong* ;Fu, Lijun* ;...
期刊：
Energy & Environmental Science ,2016年9(12):3570-3611 ISSN：1754-5692
通讯作者：
Zhu, Yusong;Fu, Lijun;Wu, Yuping
作者机构：
[Zhu, YS; Fu, Lijun; Wu, Yuping; Liu, Xiang; Wang, Faxing; Zhu, Yusong; Li, Chunyang] Nanjing Tech Univ, Coll Energy, Nanjing 211816, Jiangsu, Peoples R China.;[Zhu, YS; Fu, Lijun; Wu, Yuping; Liu, Xiang; Wang, Faxing; Zhu, Yusong; Li, Chunyang] Nanjing Tech Univ, Inst Adv Mat, Nanjing 211816, Jiangsu, Peoples R China.;[Wu, Xiongwei; Wu, Yuping] Hunan Agr Univ, Coll Sci, Changsha, Hunan, Peoples R China.;[Wu, Yuping] Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China.;[Wu, Yuping] Fudan Univ, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200433, Peoples R China.
通讯机构：
[Zhu, YS; Fu, LJ; Wu, YP] N;[Wu, Yuping] H;[Wu, Yuping] F;Nanjing Tech Univ, Coll Energy, Nanjing 211816, Jiangsu, Peoples R China.;Nanjing Tech Univ, Inst Adv Mat, Nanjing 211816, Jiangsu, Peoples R China.
摘要：
Nanotechnology has opened up new frontiers in materials science and engineering in the past several decades. Considerable efforts on nanostructured electrode materials have been made in recent years to fulfill the future requirements of electrochemical energy storage. Compared to bulk materials, most of these nanostructured electrode materials improve the thermodynamic and kinetic properties of electrochemical reactions for achieving high energy and power densities. Here we briefly review the state-of-the-art research activities in the area of nanostructured positive electrode materials for post-lithium ion batteries, including Li-S batteries, Li-Se batteries, aqueous rechargeable lithium batteries, Li-O2 batteries, Na-ion batteries, Mg-ion batteries and Al-ion batteries. These future rechargeable battery systems may offer increased energy densities, reduced cost, and more environmental benignity. A particular focus is directed to the design principles of these nanostructured positive electrode materials and how nanostructuring influences electrochemical performance. Moreover, the recent achievements in nanostructured positive electrode materials for some of the latest emerging rechargeable batteries are also summarized, such as Zn-ion batteries, F- and Cl-ion batteries, Na-, K- and Al-S batteries, Na- and K-O2 batteries, Li-CO2 batteries, novel Zn-air batteries, and hybrid redox flow batteries. To facilitate further research and development, some future research trends and directions are finally discussed. © The Royal Society of Chemistry 2016.
语种：
英文
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L-Cysteine metabolism and its nutritional implications
作者：
Yin, Jie;Ren, Wenkai;Yang, Guan;Duan, Jielin;Huang, Xingguo;...
期刊：
MOLECULAR NUTRITION & FOOD RESEARCH ,2016年60(1):134-146 ISSN：1613-4125
通讯作者：
Yin, Yulong
作者机构：
[Yin, Jie; Ren, Wenkai; Duan, Jielin; Li, Tiejun; Wu, Guoyao; Yin, Yulong; Li, Chongyong] Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg,Sci Observing &, Minist Agr,Hunan Prov Engn Res Ctr Hlth Livestock, Changsha, Hunan, Peoples R China.;[Yin, Jie; Ren, Wenkai; Duan, Jielin] Univ Chinese Acad Sci, Beijing, Peoples R China.;[Yang, Guan] Univ Florida, Dept Anim Sci, Gainesville, FL 32611 USA.;[Fang, Rejun; Huang, Xingguo] Hunan Agr Univ, Dept Anim Sci, Changsha, Hunan, Peoples R China.;[Yin, Yulong] Hunan Agr Univ, Sch Life Sci, Changsha, Hunan, Peoples R China.
通讯机构：
[Yin, Yulong] C;Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg,Sci Observing &, Minist Agr,Hunan Prov Engn Res Ctr Hlth Livestock, Changsha, Hunan, Peoples R China.
关键词：
GSH;H2S;Nutritional potential;Taurine;l-Cysteine
摘要：
L-Cysteine is a nutritionally semi-essential amino acid and is present mainly in the form of L-cystine in the extracellular space. With the help of a transport system, extracellular L-cystine crosses the plasma membrane and is reduced to L-cysteine within cells by thioredoxin and reduced glutathione (GSH). Intracellular L-cysteine plays an important role in cellular homeostasis not only as a precursor for protein synthesis, but also for the production of GSH, H2 S, and taurine. L-Cysteine-dependent synthesis of GSH has been investigated in many pathological conditions, while the pathway for L-cysteine metabolism to form H2 S has received little attention with regard to prevention and treatment of disease in humans. The main objective of this review is to highlight the metabolic pathways of L-cysteine catabolism to GSH, H2 S, and taurine, with special emphasis on therapeutic and nutritional use of L-cysteine to improve the health and well-being of animals and humans This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.
语种：
英文
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