MeMYB26, a drought-responsive transcription factor in cassava (Manihot esculenta Crantz)

文献类型: 外文期刊

第一作者: Wang, Bin

作者: Wang, Bin;Li, Kai;Zhou, Yuxun;Xiao, Junhua;Guo, Xin;Zhao, Pingjuan;Liao, Wenbin;Ruan, Mengbin;Peng, Ming;Zeng, Changying;Bai, Yang;Chen, Ye

作者机构:

关键词: MYB; drought resistance; natural variation; candidate association study; coexpression interaction network

期刊名称:CROP BREEDING AND APPLIED BIOTECHNOLOGY ( 影响因子:1.282; 五年影响因子:1.493 )

ISSN: 1984-7033

年卷期: 2021 年 21 卷 1 期

页码:

收录情况: SCI

摘要: Cassava (Manihot esculenta Crantz) is worldwide the sixth-largest food crop and highly drought resistant. The expression of the myeloblastosis (MYB) family protein MeMYB26 in cassava was previously reported to be significantly up-regulated under water deficit. To study the basic characterization, natural variations and potential functions of MeMYB26 for drought resistance in cassava, the protein was subjected to bioinformatics analysis, multiplex-PCR with next-generation sequencing and candidate association studies. The results indicated that MeMYB26 is a typical transcription factor, with two MYB DNA-binding and transcriptional activation domains. One stop-gained and five nonsynonymous variations in the genomic region of MeMYB26 were significantly associated with drought resistance traits. The results of the scale-free coexpression network showed that the MeMYB26 gene plays a critical role in plant stress resistance, growth and biomass development. It was concluded that MeMYB26 is a reliable candidate gene associated with drought tolerance and biomass storage in cassava.

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