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Transcriptomic analysis of AhAHL23-mediated root development and space-induced mutations in peanut (Arachis hypogaea L.)

文献类型： 外文期刊

作者： Sun, Zhihui 1 ; Jin, Weicai 1 ; Umer, Muhammad J. 1 ; Wu, Lingling 1 ; Wang, Runfeng 1 ; Xiao, Yuan 3 ; Li, Shaoxiong 1 ; Li, Haifen 1 ; Huang, Lu 1 ; Yu, Qianxia 1 ; Wang, Wenyi 4 ; Sun, Dayuan 5 ; Guo, Zhenhua 6 ; Alnufaei, Afnan A. 7 ; Hong, Yanbin 1 ; Chen, Xiaoping 1 ; Lu, Qing 1 ; Liu, Hao 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Crops Res Inst, South China Peanut Sub Ctr Natl Ctr Oilseed Crops, Guangdong Prov Key Lab Crop Genet Improvement, Guangzhou 510640, Guangdong, Peoples R China

2.Guangdong Zhaohua Innovat Acad Space Breeding, Heyuan 517025, Guangdong, Peoples R China

3.Wannan Med Coll, Sch Publ Hlth, Wuhu 241002, Anhui, Peoples R China

4.South China Agr Univ, Coll Agr, Guangzhou 510642, Guangdong, Peoples R China

5.Guangdong Acad Agr Sci, Plant Protect Res Inst, Guangzhou 510640, Guangdong, Peoples R China

6.Heilongjiang Acad Agr Sci, Rice Res Inst, Jiamusi 154026, Heilongjiang, Peoples R China

7.Univ Bisha, Fac Sci, Dept Biol, Bisha 61922, Saudi Arabia

关键词： Peanut growth; Transcriptome RNA-seq; Transcription factors; Phytohormone regulation; AT-hook protein

期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：8.5； 五年影响因子：8.7 ）

ISSN： 0141-8130

年卷期： 2025 年 311 卷

页码：

收录情况： SCI

摘要： Peanut seedling development encompasses four distinct tissues (leaf, stem, hypocotyl, root) with largely uncharacterized transcriptional regulatory networks, so we conducted RNA-seq on the space mutant line ZHM112. Transcriptome analysis showed that differentially expressed genes (DEGs) in peanut seedlings were enriched in basic biosynthesis and physiological metabolism pathways, with photosynthetic metabolism prominent in leaves and hormone metabolism in roots. The weighted gene co-expression network analysis (WGCNA) identified eight modules related to the four tissues. By integrating differential expression and co-expression analyses, we found 1190 key genes in leaves, 133 in stems, 72 in hypocotyls, and 1472 in roots. Further, screening these genes led to the identification of 154 core transcription factors and the construction of a transcriptional regulatory network. Notably, the root-specific transcription factor AhAHL23 was found to enhance root development in Arabidopsis by modulating auxin and cytokinin pathways upon ectopic expression. These findings elucidate the transcriptional regulatory networks of peanut seedling development, providing a molecular basis for understanding genetic improvements in space breeding and their applications in peanut cultivation.

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