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基于转录组比较的花生耐冷相关转录因子的挖掘和表达谱分析。

Comparative Transcriptome-Based Mining and Expression Profiling of Transcription Factors Related to Cold Tolerance in Peanut.

机构信息

Peanut Research Institute, College of Agronomy, Shenyang Agricultural University, Shenyang 110161, China.

出版信息

Int J Mol Sci. 2020 Mar 11;21(6):1921. doi: 10.3390/ijms21061921.

DOI:10.3390/ijms21061921
PMID:32168930
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7139623/
Abstract

Plants tolerate cold stress by regulating gene networks controlling cellular and physiological traits to modify growth and development. Transcription factor (TF)-directed regulation of transcription within these gene networks is key to eliciting appropriate responses. Identifying TFs related to cold tolerance contributes to cold-tolerant crop breeding. In this study, a comparative transcriptome analysis was carried out to investigate global gene expression of entire TFs in two peanut varieties with different cold-tolerant abilities. A total of 87 TF families including 2328 TF genes were identified. Among them, 445 TF genes were significantly differentially expressed in two peanut varieties under cold stress. The TF families represented by the largest numbers of differentially expressed members were bHLH (basic helix-loop-helix protein), C2H2 (Cys2/His2 zinc finger protein), ERF (ethylene-responsive factor), MYB (v-myb avian myeloblastosis viral oncogene homolog), NAC (NAM, ATAF1/2, CUC2) and WRKY TFs. Phylogenetic evolutionary analysis, temporal expression profiling, protein-protein interaction (PPI) network, and functional enrichment of differentially expressed TFs revealed the importance of plant hormone signal transduction and plant-pathogen interaction pathways and their possible mechanism in peanut cold tolerance. This study contributes to a better understanding of the complex mechanism of TFs in response to cold stress in peanut and provides valuable resources for the investigation of evolutionary history and biological functions of peanut TFs genes involved in cold tolerance.

摘要

植物通过调节控制细胞和生理特性的基因网络来耐受寒冷胁迫，从而改变生长和发育。这些基因网络中转录因子（TF）对转录的直接调控是引发适当响应的关键。鉴定与耐冷性相关的 TF 有助于耐冷作物的培育。在这项研究中，进行了比较转录组分析，以研究两个具有不同耐冷能力的花生品种中整个 TF 的全基因组基因表达。共鉴定出 87 个 TF 家族，包括 2328 个 TF 基因。其中，在两种花生品种的冷胁迫下，有 445 个 TF 基因表达显著差异。差异表达成员数量最多的 TF 家族代表是 bHLH（碱性螺旋-环-螺旋蛋白）、C2H2（Cys2/His2 锌指蛋白）、ERF（乙烯响应因子）、MYB（v-myb 禽成髓细胞瘤病毒癌基因同源物）、NAC（NAM、ATAF1/2、CUC2）和 WRKY TF。差异表达 TF 的系统发育进化分析、时间表达谱分析、蛋白质-蛋白质相互作用（PPI）网络和功能富集揭示了植物激素信号转导和植物-病原体相互作用途径及其在花生耐冷性中的可能机制的重要性。这项研究有助于更好地理解花生中 TF 对冷胁迫反应的复杂机制，并为研究参与耐冷性的花生 TF 基因的进化历史和生物学功能提供了有价值的资源。

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