作者：
Xu, Xun;Pan, Shengkai;Cheng, Shifeng;Zhang, Bo;Mu, Desheng;Ni, Peixiang;Zhang, Gengyun;Yang, Shuang;Li, Ruiqiang;Wang, Jun;Orjeda, Gisella;Guzman, Frank;Torres, Michael;Lozano, Roberto;Ponce, Olga;Martinez, Diana;De la Cruz, German;Chakrabarti, S K;Patil, Virupaksh U;Skryabin, Konstantin G
期刊：
Nature,2011年475(7355):189-U94 ISSN：0028-0836
通讯作者：
Huang, SW
作者机构：
[Lundback, Steven; Massa, Alicia N; Vaillancourt, Brieanne; Buell, C Robin; Geoffroy, Michael; Lin, Haining; DellaPenna, Dean] Michigan State Univ, E Lansing, MI 48824 USA.;[Lozano, Roberto; Torres, Michael; De la Cruz, German; Martinez, Diana; Guzman, Frank; Orjeda, Gisella; Ponce, Olga] Cayetano Heredia Univ, Genom Res Unit, Lima 13, Peru.;[Lozano, Roberto; Torres, Michael; De la Cruz, German; Martinez, Diana; Guzman, Frank; Orjeda, Gisella; Ponce, Olga] San Cristobal Huamanga Univ, Biotechnol & Plant Genet Lab, Ayacucho, Peru.;[Liang, Chunbo; Li, Ying; He, Jun; Zhang, Zhonghua; Xie, Binyan; Huang, Sanwen; Zhang, Youjun; Qu, Dongyu; Du, Yongchen; Xu, Jianfei; He, Ying] Chinese Acad Agr Sci, Key Lab Hort Crops Genet Improvement, Sino Dutch Joint Lab Hort Genom, Inst Vegetables & Flowers,Minist Agr, Beijing 100081, Peoples R China.;[Jiang, Jiming; Torres, Giovana A; Iovene, Marina] Univ Wisconsin, Dept Hort, Madison, WI 53706 USA.
通讯机构：
[Huang, SW] Chinese Acad Agr Sci, Key Lab Hort Crops Genet Improvement, Sino Dutch Joint Lab Hort Genom, Inst Vegetables & Flowers,Minist Agr, Beijing 100081, Peoples R China.
摘要：
Potato (Solanum tuberosum L.) is the world's most important non-grain food crop and is central to global food security. It is clonally propagated, highly heterozygous, autotetraploid, and suffers acute inbreeding depression. Here we use a homozygous doubled-monoploid potato clone to sequence and assemble 86% of the 844-megabase genome. We predict 39,031 protein-coding genes and present evidence for at least two genome duplication events indicative of a palaeopolyploid origin. As the first genome sequence of an asterid, the potato genome reveals 2,642 genes specific to this large angiosperm clade. We also sequenced a heterozygous diploid clone and show that gene presence/absence variants and other potentially deleterious mutations occur frequently and are a likely cause of inbreeding depression. Gene family expansion, tissue-specific expression and recruitment of genes to new pathways contributed to the evolution of tuber development. The potato genome sequence provides a platform for genetic improvement of this vital crop.
通讯机构：
[Liu, SY] Chinese Acad Agr Sci, Oil Crops Res Inst, Key Lab Biol & Genet Improvement Oil Crops, Minist Agr PRC, Wuhan 430062, Peoples R China.
摘要：
Polyploidization has provided much genetic variation for plant adaptive evolution, but the mechanisms by which the molecular evolution of polyploid genomes establishes genetic architecture underlying species differentiation are unclear. Brassica is an ideal model to increase knowledge of polyploid evolution. Here we describe a draft genome sequence of Brassica oleracea, comparing it with that of its sister species B. rapa to reveal numerous chromosome rearrangements and asymmetrical gene loss in duplicated genomic blocks, asymmetrical amplification of transposable elements, differential gene co-retention for specific pathways and variation in gene expression, including alternative splicing, among a large number of paralogous and orthologous genes. Genes related to the production of anticancer phytochemicals and morphological variations illustrate consequences of genome duplication and gene divergence, imparting biochemical and morphological variation to B. oleracea. This study provides insights into Brassica genome evolution and will underpin research into the many important crops in this genus.
摘要：
An integrated, selective interlayer structure is developed to further mitigate the diffusion of polysulfides, simply by coating the surface of a C-S cathode with a graphene/TiO2 film. It is found that the application of the graphene/TiO2 film as an interlayer enables the porous carbon nanotubes-S cathode to exhibit a high reversible specific capacity and extraordinarily excellent cycling stability.
期刊：
Bulletin of Environmental Contamination and Toxicology,2011年87(1):86-90 ISSN：0007-4861
通讯作者：
Zhou, CJ
作者机构：
[Zhang, Wenjie; Lei, Aihua; Zhou, Weichang; Wan, Qiang; Zhang, Qinglin] School of Chemistry and Chemical Engineering, Micro-Nano Center, Hunan University, Changsha 410082, China;[Zhou, Chunjiao] College of Science, Hunan Agricultural University, Changsha 410128, China;[Zou, Bingsuo] Micro-nano Technology Center, School of MSE, Beijing Institute of Technology, Beijing 100081, China
摘要：
The photosensitive resveratrol was successfully encapsulated in yeast cells for the first time, as characterized by FT-IR spectra, fluorescence and confocal micrographs of the yeast cells, resveratrol and microcapsules. The release characteristic of the obtained yeast-encapsulated resveratrol in simulated gastric fluid was evaluated, and its storage stability as a powder was investigated at 25 degrees C/75% relative humidity (RH), 25 degrees C/90% RH and 60 degrees C under the laboratory fluorescent lighting conditions (ca. 300 lx) or in the dark. Also, the scavenging capacity of yeast-encapsulated resveratrol on DPPH radical was compared with that of non-encapsulated resveratrol. It could be demonstrated clearly that no chemical changes occurred during the encapsulation. Besides, the DPPH radical-scavenging activity increased after the encapsulation. In addition, the yeast-encapsulated resveratrol exhibited good stability, and its bioavailability was enhanced as a result of increased solubility of resveratrol and sustained releasing. (c) 2007 Elsevier B.V. All rights reserved.
摘要：
Nanoporous selenium was prepared by a simple mechanical method adopting nano-CaCO3 as a template. When used as a cathode, it can exhibit relatively high capacity and good cycling behaviour. These results present great promise for this new cathode material for rechargeable lithium batteries of high energy density.
通讯机构：
[Wen, ZB] Jiangxi Normal Univ, Coll Chem & Chem Engineer, Nanchang 330022, Peoples R China.
摘要：
An aqueous rechargeable battery system is assembled by using metallic zinc and Na0.95MnO2 as the negative and positive electrodes, respectively. It is cheap and environmentally friendly, and its energy density is 78 Wh kg(-1). Its cycling performance is very good with only 8% capacity loss after 1000 cycles at 4 C between 1 and 2 V.
期刊：
Enzyme and Microbial Technology,2009年44(1):17-23 ISSN：0141-0229
通讯作者：
Zhao, X.(zhaoxb04@mails.tsinghua.edu.cn)
作者机构：
[ Cheng, Keke ] Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, China;[ Liu, Dehua ; Zhao, Xuebing ] Institute of Applied Chemistry, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China;[ Peng, Feng ] College of Science, Hunan Agricultural University, Changsha, 410028, China
摘要：
The enzymatic digestibility of sugarcane bagasse was greatly increased by alkali (NaOH)-peracetic acid (PAA) pretreatment under mild conditions. The effects of several factors affecting the pretreatment were investigated. It was found that when bagasse was pre-pretreated by 10% (based on initial dry materials) NaOH with 3:1 liquid-to-solid ratio at 90 degrees C for 1.5 h and further delignified by 10% peracetic acid (based on initial dry materials) at 75 degrees C for 2.5 h, the yield of reducing sugars reached 92.04% by enzymatic hydrolysis for 120 h with cellulase loading of 15 FPU/g solid. Compared with acid and alkali pretreatment, alkali-PAA pretreatment could be conducted under milder conditions and was more effective for delignification with less carbohydrates being degraded in the pretreatment process. Alkaline stage played an important role for partial delignification, swelling fibers and subsequently reducing PAA loading. No loss of cellulase activity (FPA) was observed in the liquid phase for alkali-PAA pretreated bagasse after enzymatic hydrolysis for 120 h. (C) 2008 Elsevier Inc. All rights reserved.
期刊：
Bioprocess and Biosystems Engineering,2012年35(6):993-1004 ISSN：1615-7591
通讯作者：
Zhao, X.(zhaoxb@mail.tsinghua.edu.cn)
作者机构：
[ Peng, Feng ; Liu, Canming ] College of Science, Hunan Agricultural University, Changsha 410028, China;[ Liu, Dehua ; Du, Wei ; Zhao, Xuebing ] Institute of Applied Chemistry, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
通讯机构：
[Zhao, Xuebing] Institute of Applied Chemistry, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, China.
摘要：
Microbial lipid produced using yeast fermentation with inexpensive carbon sources such as lignocellulosic hydrolyzate can be an alternative feedstock for biodiesel production. Several inhibitors that can be generated during acid hydrolysis of lignocellulose were added solely or together into the culture medium to study their individual inhibitory actions and their synergistic effects on the growth and lipid accumulation of oleaginous yeast Rhodosporidium toruloides. When the inhibitors were present in isolation in the medium, to obtain a high cell biomass accumulation, the concentrations of formic acid, acetic acid, furfural and vanillin should be lower than 2, 5, 0.5 and 1.5 g/L, respectively. However, the synergistic effects of these compounds could dramatically decrease the minimum critical inhibitory concentrations leading to significant growth and lipid production inhibitions. Unlike the above-cited inhibitors, sodium lignosulphonate had no negative influence on biomass accumulation when its concentration was in the range of 0.5-2.0 g/L; in effect, it was found to facilitate cell growth and sugar-to-lipid conversion. The fatty acid compositional profile of the yeast lipid was in the compositional range of various plant oils and animal tallow. Finally, the crude yeast lipid from bagasse hydrolyzate could be well converted into fatty acid methyl ester (FAME, biodiesel) by enzymatic transesterification in a tert-butanol system with biodiesel yield of 67.2% and lipid-to-biodiesel conversion of 88.4%.
期刊：
Colloids and Surfaces A: Physicochemical and Engineering Aspects,2013年435(00):85-90 ISSN：0927-7757
通讯作者：
Zhang, PY
作者机构：
[Zeng, Guangming; Wu, Zhen; Zhang, Panyue] Key Lab. of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha 410082, China;[Zhang, Ling] College of Civil Engineering, Hunan University, Changsha 410082, China;[Zhou, Chunjiao] College of Science, Hunan Agricultural University, Changsha 410128, China;[Zhang, Xian] College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
摘要：
Humic acid-coated Fe3O4 (HA-Fe3O4) nanoparticles as magnetic adsorbents were prepared with co-precipitation of humic acids and Fe3O4 nanoparticles. TEM analysis indicated that the average diameter of the spherical HA-Fe3O4 core was about 15 nm. TGA characterization showed that the HA-Fe3O4 nanoparticles contained about 50% (w/w) HA. The characteristic absorption of HA at 1604/cm and 1701/cm was observed in the FIRT spectra of HA-Fe3O4 nanoparticles. The HA-Fe3O4 nanoparticles exhibited a typical superparamagnetic characteristic with a saturation magnetization of 77 emu/g, which resulted in an easy solid–liquid separation with an external magnet. The HA-Fe3O4 nanoparticles were applied for methylene blue (MB) adsorption and results showed that the HA-Fe3O4 nanoparticles possessed much higher adsorbed amount of MB than the bare Fe3O4 nanoparticles and HA powders. The HA-Fe3O4 nanoparticles remained stable in a broad pH range of 3–11. The adsorption kinetics can be described by a pseudo-second-order equation, and the time when 50% of the MB was adsorbed (t1/2) was 7 min. The adsorption isotherm of the HA-Fe3O4 nanoparticles agreed well with Langmuir adsorption equation, and the maximum adsorbed amount of MB was 0.291 mmol/g. Desorption of the saturated HA-Fe3O4 nanoparticles was easily carried out with a mixture of methanol and acetic acid with a volume ratio of 9:1.;;;► HA-Fe3O4 nanoparticles showed a high saturation magnetization of 77 emu/g. ► HA-Fe3O4 nanoparticles had a high capacity for methylene blue adsorption. ► Sorption kinetics could be described by a pseudo-second-order equation. ► Sorption isotherm agreed well with Langmuir equation. ► Desorption of HA-Fe3O4 was conducted with a mixture of methanol and acetic acid.
摘要：
The wolf spider Lycosa singoriensis is a hunting spider with a widespread distribution in northwest China. The venom gland of spiders, which is a vent specialized secretory tissue, can secrete abundant and complex toxin components. To extensively examine the transcripts expressed in the venom glands of L. singoriensis, we generated 833 expressed sequence tags (ESTs) from a directional cDNA library. Toxin-like sequences account for 69.1% of these ESTs, 17.3% are similar to cellular transcripts and 13.6% have no significant similarity to any known sequences. Here, we identified 223 novel toxin-like sequences, which can be classified into six different. superfamilies; that means a novel potential source of ligands for varied ion channels was discovered. With the aid of Gene Ontology terms and homology to eukaryotic orthologous groups, the annotation of cellular transcripts revealed some cellular processes important for the toxin secretion of venom glands including protein synthesis, protein folding, tuned post-translational processing and trafficking, etc. (C) 2009 Elsevier GmbH. All rights reserved.
期刊：
Journal of Physical Chemistry C,2015年119(27):14834-14842 ISSN：1932-7447
通讯作者：
Li, WZ
作者机构：
[Chen, Qiyuan; Li, Jie; Liu, Yang; Li, Wenzhang] School of Chemistry and Chemical Engineering, Central South University, Changsha, China;[Yang, Yahui] College of Resources and Environment, Hunan Agricultural University, Changsha, China;[Li, Yaomin] Department of Chemistry, University College London, 20 Gordon Street, London, United Kingdom
通讯机构：
[Li, WZ] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.
关键词：
Hydrothermal methods - Incident photon-to-current conversion efficiencies - Linear sweep voltammetry - Mott-Schottky analysis - Photoelectrochemical performance - Photoelectrochemicals - Solar water splitting - Two Dimensional (2 D)
摘要：
A quasi-solid-state sodium-ion capacitor is demonstrated with nanoporous disordered carbon and macroporous graphene as the negative and positive electrodes, respectively, using a sodium-ion-conducting gel polymer electrolyte. It can operate at a cell voltage as high as 4.2 V with an energy density of record high 168 W h kg(-1).
作者机构：
[Wen Shi; Fang Wang] Science College, Hunan Agricultural University, Changsha 410128, China;[Fang Wang; Gui-ping Liao] Agricultural Information Institute, Hunan Agricultural University, Changsha 410128, China;[Xiao-yang Zhou] Department of Mathematics, Huazhong University of Science and Technology, Wuhan 430074, China
