The Arabidopsis defensin gene AtPDF2.5 mediates cadmium tolerance and accumulation

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成果类型：

期刊论文

作者：

Luo, Jin-Song;Yang, Yong;Gu, Tianyu;Wu, Zhimin;Zhang, Zhenhua*

通讯作者：

Zhang, Zhenhua

作者机构：

[Luo, Jin-Song; Zhang, Zhenhua; Yang, Yong; Wu, Zhimin] Hunan Agr Univ, Coll Resources & Environm Sci, Southern Reg Collaborat Innovat Ctr Grain & Oil C, Changsha 410128, Hunan, Peoples R China.

[Luo, Jin-Song; Zhang, Zhenhua; Yang, Yong; Wu, Zhimin] Hunan Prov Key Lab Nutr Common Univ, Hunan Prov Key Lab Farmland Pollut Control & Agr, Natl Engn Lab Soil & Fertilizer Resources Efficie, Changsha 410128, Hunan, Peoples R China.

[Gu, Tianyu] Chinese Acad Sci, Shanghai Inst Plant Physiol & Ecol, Natl Key Lab Plant Mol Genet, Shanghai 200032, Peoples R China.

[Gu, Tianyu] Chinese Acad Sci, Shanghai Inst Plant Physiol & Ecol, Ctr Excellence Mol Plant Sci, Shanghai 200032, Peoples R China.

通讯机构：

[Zhang, Zhenhua] H

Hunan Prov Key Lab Nutr Common Univ, Hunan Prov Key Lab Farmland Pollut Control & Agr, Natl Engn Lab Soil & Fertilizer Resources Efficie, Changsha 410128, Hunan, Peoples R China.

语种：

英文

关键词：

Arabidopsis;AtPDF2.5;accumulation;apoplast;cadmium tolerance;chelation

期刊：

PLANT CELL AND ENVIRONMENT

ISSN：

0140-7791

年：

2019

卷：

期：

页码：

2681-2695

DOI：

10.1111/pce.13592

机构署名：

本校为第一机构

院系归属：

资源环境学院

摘要：

Although excess cadmium (Cd) accumulation is harmful to plants, the molecular mechanisms underlying Cd detoxification and accumulation in Arabidopsis thaliana remain largely undetermined. In this study, we demonstrated that the A. thaliana PLANT DEFENSIN 2 gene AtPDF2.5 is involved in Cd tolerance and accumulation. In vitro Cd-binding assays revealed that AtPDF2.5 has Cd-chelating activity. Site-directed mutagenesis of AtPDF2.5 identified eight cysteine residues that were essential for mediating Cd tolerance and chelation. Histochemical analysis demonstrated that AtPDF2.5 was mainly expressed ...

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The Arabidopsis defensin gene AtPDF2.5 mediates cadmium tolerance and accumulation

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