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全基因组分析阐明了花生（Arachis hypogaea L.）基因在不同非生物胁迫和生长发育阶段中的作用。

Genome-Wide Analysis Elucidates the Roles of Genes in Different Abiotic Stresses and Growth and Development Stages in the Peanut ( L.).

机构信息

Institute of Cotton Research, Shanxi Agricultural University, Yuncheng 044000, China.

出版信息

Int J Mol Sci. 2024 Sep 30;25(19):10561. doi: 10.3390/ijms251910561.

DOI:10.3390/ijms251910561
PMID:39408886
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11476539/
Abstract

The lateral organ boundaries domain () genes, as the plant-specific transcription factor family, play a crucial role in controlling plant architecture and stress tolerance. However, the functions of genes in the peanut plant ( L.) remain unclear. In this study, 73 were identified in the peanut plant and divided into three groups by phylogenetic tree analysis. Gene structure and conserved protein motif analysis supported the evolutionary conservation of . Tandem and segment duplications contributed to the expansion of . The evolutionary relationship analysis of gene family between and four other species indicated that the peanut plant had a close relationship with the soybean plant. played a very important role in response to growth and development as well as abiotic stress. Furthermore, gene expression profiling and real-time quantitative qRT-PCR analysis showed that , , , and were candidate genes for salt stress, while , , , , , and were candidate genes for drought stress. Our subcellular localization experiment revealed that , , , and were located in the nucleus. Heterologous overexpression of and in significantly enhanced tolerance to salt stress. Our results provide a theoretical basis and candidate genes for studying the molecular mechanism for abiotic stress in the peanut plant.

摘要

侧翼器官边界域（LBD）基因作为植物特异性转录因子家族，在控制植物结构和胁迫耐受方面发挥着关键作用。然而，花生（Arachis hypogaea L.）中 LBD 基因的功能仍不清楚。本研究在花生中鉴定了 73 个 LBD 基因，并通过系统发育树分析将其分为 3 组。基因结构和保守蛋白结构域分析支持 LBD 基因的进化保守性。串联和片段重复导致了 LBD 基因家族的扩张。LBD 基因家族在花生和其他四个物种之间的进化关系分析表明，花生与大豆植物关系密切。LBD 基因在生长发育和非生物胁迫响应中发挥着非常重要的作用。此外，基因表达谱和实时定量 qRT-PCR 分析表明，LBD33、LBD34、LBD36 和 LBD37 是盐胁迫的候选基因，而 LBD14、LBD23、LBD24、LBD25、LBD26 和 LBD27 是干旱胁迫的候选基因。我们的亚细胞定位实验表明，LBD19、LBD21、LBD22 和 LBD29 定位于细胞核。LBD33 和 LBD37 的异源过表达显著增强了对盐胁迫的耐受性。我们的研究结果为研究花生植物非生物胁迫的分子机制提供了理论依据和候选基因。

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