The ERF transcription factor family in cassava: genome-wide characterization and expression analyses against drought stress
文献类型： 外文期刊
作者： Fan, Wei 1 ; Hai, Meirong 2 ; Guo, Yunling 3 ; Ding, Zehong 3 ; Tie, Weiwei 3 ; Ding, Xupo 3 ; Yan, Yan 3 ; Wei, Yunxie;
作者机构： 1.Yunnan Agr Univ, Coll Resources & Environm, Kunming 650201, Peoples R China
2.Yunnan Agr Univ, Coll Agron & Biotechnol, Kunming 650201, Peoples R China
3.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Key Lab Biol & Genet Resources Trop Crops, Haikou 571101, Peoples R China
4.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Key Lab Biol & G
期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）
ISSN： 2045-2322
年卷期： 2016 年 6 卷
页码：
收录情况： SCI
摘要： Cassava (Manihot esculenta) shows strong tolerance to drought stress; however, the mechanisms underlying this tolerance are poorly understood. Ethylene response factor (ERF) family genes play a crucial role in plants responding to abiotic stress. Currently, less information is known regarding the ERF family in cassava. Herein, 147 ERF genes were characterized from cassava based on the complete genome data, which was further supported by phylogenetic relationship, gene structure, and conserved motif analyses. Transcriptome analysis suggested that most of the MeERF genes have similar expression profiles between W14 and Arg7 during organ development. Comparative expression profiles revealed that the function of MeERFs in drought tolerance may be differentiated in roots and leaves of different genotypes. W14 maintained strong tolerance by activating more MeERF genes in roots compared to Arg7 and SC124, whereas Arg7 and SC124 maintained drought tolerance by inducing more MeERF genes in leaves relative to W14. Expression analyses of the selected MeERF genes showed that most of them are significantly upregulated by osmotic and salt stresses, whereas slightly induced by cold stress. Taken together, this study identified candidate MeERF genes for genetic improvement of abiotic stress tolerance and provided new insights into ERF-mediated cassava tolerance to drought stress.
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