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Identification of novel heavy metal detoxification proteins in Solanum tuberosum: Insights to improve food security protection from metal ion stress

文献类型： 外文期刊

作者： He, Guandi 1 ; Tian, Weijun 3 ; Qin, Lijun 1 ; Meng, Lulu 3 ; Wu, Danxia 3 ; Huang, Yun 3 ; Li, Dandan 3 ; Zhao, Degang 1 ;

作者机构： 1.Guizhou Univ, Inst Agrobioengn, Minist Educ, Key Lab Plant Resources Conservat & Germplasm Inn, Guiyang 550025, Peoples R China

2.Guizhou Univ, Coll Life Sci, Guiyang 550025, Peoples R China

3.Guizhou Univ, Agr Coll, Guiyang 550025, Peoples R China

4.Guizhou Univ, Inst New Rural Dev, Guiyang 550025, Peoples R China

5.Guizhou Acad Agr Sci, Guiyang 550025, Peoples R China

关键词： Nucleotide binding domain; Functional genes; Metal ion binding sites microRNA target; Spatiotemporal tissue specific expression

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：7.963； 五年影响因子：7.842 ）

ISSN： 0048-9697

年卷期： 2021 年 779 卷

页码：

收录情况： SCI

摘要： With increasingly serious environmental pollution problems, research has focused on identifying functional genes within plants that can help ensure food security and soil governance. In particular, plants seem to have been able to evolve specific functional genes to respond to environmental changes by losing partial gene functions, thereby representing a novel adaptation mechanism. Herein, a new category of functional genes was identified and investigated, providing new directions for understanding heavy metal detoxification mechanisms. Interestingly, this category of proteins appears to exhibit specific complexing functions for heavy metals. Further, a new approach was established to evaluate ATP-binding cassette (ABC) transporter family functions using microRNA targeted inhibition. Moreover, mutant and functional genes were identified for future research targets. Expression profiling under five heavy metal stress treatments provided an important framework to further study defense responses of plants to metal exposure. In conclusion, the new insights identified here provide a theoretical basis and reference to better understand the mechanisms of heavy metal tolerance in potato plants. Further, these new data provide additional direc- tions and foundations for mining gene resources for heavy metal tolerance genes to improve safe, green crop production and plant treatment of heavy metal soil pollution.(c) 2021 Published by Elsevier B.V.

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