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Genome-Wide Identification and Expression Analysis of AP2/ERF Transcription Factor Related to Drought Stress in Cultivated Peanut (Arachis hypogaea L.)

文献类型： 外文期刊

作者： Cui, Mengjie 1 ; Haider, Muhammad Salman 3 ; Chai, Pengpei 2 ; Guo, Junjia 2 ; Du, Pei 1 ; Li, Hongyan 2 ; Dong, Wenzh 1 ;

作者机构： 1.Nanjing Agr Univ, Coll Agr, Nanjing, Peoples R China

2.Henan Acad Agr Sci, Key Lab Oil Crops Huang Huai Hai Plains, Minist Agr, Henan Prov Key Lab Oil Crops Improvement, Zhengzhou, Peoples R China

3.Ghazi Univ, Dept Hort, Dera Ghazi Khan, Pakistan

关键词： AP2; ERF1; peanut; phylogenetic analysis; evolution analysis; drought stress

期刊名称：FRONTIERS IN GENETICS （ 影响因子：4.599； 五年影响因子：4.888 ）

ISSN：

年卷期： 2021 年 12 卷

页码：

收录情况： SCI

摘要： APETALA2/ethylene response element-binding factor (AP2/ERF) transcription factors (TFs) have been found to regulate plant growth and development and response to various abiotic stresses. However, detailed information of AP2/ERF genes in peanut against drought has not yet been performed. Herein, 185 AP2/ERF TF members were identified from the cultivated peanut (A. hypogaea cv. Tifrunner) genome, clustered into five subfamilies: AP2 (APETALA2), ERF (ethylene-responsive-element-binding), DREB (dehydration-responsive-element-binding), RAV (related to ABI3/VP), and Soloist (few unclassified factors)). Subsequently, the phylogenetic relationship, intron-exon structure, and chromosomal location of AhAP2/ERF were further characterized. All of these AhAP2/ERF genes were distributed unevenly across the 20 chromosomes, and 14 tandem and 85 segmental duplicated gene pairs were identified which originated from ancient duplication events. Gene evolution analysis showed that A. hypogaea cv. Tifrunner were separated 64.07 and 66.44 Mya from Medicago truncatula L. and Glycine max L., respectively. Promoter analysis discovered many cis-acting elements related to light, hormones, tissues, and stress responsiveness process. The protein interaction network predicted the exitance of functional interaction among families or subgroups. Expression profiles showed that genes from AP2, ERF, and dehydration-responsive-element-binding subfamilies were significantly upregulated under drought stress conditions. Our study laid a foundation and provided a panel of candidate AP2/ERF TFs for further functional validation to uplift breeding programs of drought-resistant peanut cultivars.

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