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Heavy Metal Transporters-Associated Proteins in Solanum tuberosum: Genome-Wide Identification, Comprehensive Gene Feature, Evolution and Expression Analysis

文献类型： 外文期刊

作者： He, Guandi 1 ; Qin, Lijun 1 ; Tian, Weijun 3 ; Meng, Lulu 3 ; He, Tengbing 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： gene duplication; phylogenetic analysis; abiotic stress; expression analysis

期刊名称：GENES （ 影响因子：4.096； 五年影响因子：4.339 ）

ISSN：

年卷期： 2020 年 11 卷 11 期

页码：

收录情况： SCI

摘要： Plants have evolved a number of defense and adaptation responses to protect themselves against challenging environmental stresses. Genes containing a heavy metal associated (HMA) domain are required for the spatiotemporal transportation of metal ions that bind with various enzymes and co-factors within the cell. To uncover the underlying mechanisms mediated by StHMA genes, we identified 36 gene members in the StHMA family and divided them into six subfamilies by phylogenetic analysis. The StHMAs had high collinearity and were segmentally duplicated. Structurally, most StHMAs had one HMA domain, StHIPPc and StRNA1 subfamilies had two, and 13 StHMAs may be genetically variable. The StHMA gene structures and motifs varied considerably among the various classifications, this suggests the StHMA family is diverse in genetic functions. The promoter analysis showed that the StHMAs had six main cis-acting elements with abiotic stress. An expression pattern analysis revealed that the StHMAs were expressed tissue specifically, and a variety of abiotic stresses may induce the expression of StHMA family genes. The HMA transporter family may be regulated and expressed by a series of complex signal networks under abiotic stress. The results of this study may help to establish a theoretical foundation for further research investigating the functions of HMA genes in Solanum tuberosum to elucidate their regulatory role in the mechanism governing the response of plants to abiotic stress.

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