Analysis of Phytohormone Signal Transduction in Sophora alopecuroides under Salt Stress.
Analysis of Phytohormone Signal Transduction in Sophora alopecuroides under Salt Stress.
复制标题
在盐应激下，sophora脱磷脂中植物激素信号转导的分析。
DOI：
10.3390/ijms22147313
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发表时间：
2021-07-07
影响因子：
5.6
通讯作者：
Li J
中科院分区：
文献类型：
--
作者：
Zhu Y;Wang Q;Gao Z;Wang Y;Liu Y;Ma Z;Chen Y;Zhang Y;Yan F;Li J
盐胁迫严重制约了作物的产量和品质，迫切需要了解盐胁迫对植物的影响和植物的响应机制。虽然植物激素在植物对盐胁迫的反应中起着至关重要的作用，但植物激素信号转导在苦豆子等抗胁迫物种的盐胁迫反应中所起的作用尚未见报道。本研究采用转录组学和代谢组学相结合的方法，分析了盐胁迫下苦荞麦根中与植物激素信号转导相关的关键基因和代谢物的表达变化，发现生长素、细胞分裂素、油菜素内酯和赤霉素信号主要参与盐胁迫下苦荞麦根生长和恢复的调控。乙烯和茉莉酸信号可能负向调控苦荬菜对盐胁迫的响应。脱落酸和水杨酸在盐胁迫下显著上调，其信号可能正向调节植物对盐胁迫的反应。此外，水杨酸（SA）可能通过抑制促生长激素的减少和维持高水平的脱落酸（ABA）来调节植物生长与抗性之间的平衡。本研究揭示了苦豆子盐胁迫响应的机制及植物激素在盐胁迫中的作用，为作物抗性育种提供依据。
Salt stress seriously restricts crop yield and quality, leading to an urgent need to understand its effects on plants and the mechanism of plant responses. Although phytohormones are crucial for plant responses to salt stress, the role of phytohormone signal transduction in the salt stress responses of stress-resistant species such as Sophora alopecuroides has not been reported. Herein, we combined transcriptome and metabolome analyses to evaluate expression changes of key genes and metabolites associated with plant hormone signal transduction in S. alopecuroides roots under salt stress for 0 h to 72 h. Auxin, cytokinin, brassinosteroid, and gibberellin signals were predominantly involved in regulating S. alopecuroides growth and recovery under salt stress. Ethylene and jasmonic acid signals may negatively regulate the response of S. alopecuroides to salt stress. Abscisic acid and salicylic acid are significantly upregulated under salt stress, and their signals may positively regulate the plant response to salt stress. Additionally, salicylic acid (SA) might regulate the balance between plant growth and resistance by preventing reduction in growth-promoting hormones and maintaining high levels of abscisic acid (ABA). This study provides insight into the mechanism of salt stress response in S. alopecuroides and the corresponding role of plant hormones, which is beneficial for crop resistance breeding.
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