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类固醇通过调节代谢,离子平衡和植物激素反应来提高黄瓜对NaHCO的耐力

Wenjing Nie^1,2, Biao Gong², Dan Wen¹

¹Yantai Key Laboratory of Evaluation and Utilization of Silkworm Functional Substances, Yantai Engineering Research Center of Plant Stem Cell Targeted Breeding, Shandong Engineering Research Center of Functional Crop Germplasm Innovation and Cultivation Utilization, Shandong Institute of Sericulture, Yantai 264001, China.

Plants (Basel, Switzerland)

|January 11, 2025

概括

外源性24-epibrassinolide (EBR) 通过增强离子稳态,代谢和植物激素平衡,改善黄瓜植物对二碳酸 (NaHCO3) 压力的耐受性. EBR应用程序有助于植物有效地管理性压力.

科学领域:

植物生理学植物生理学
农业科学农业科学
生物化学生物化学

背景情况:

由NaHCO3引起的性压力会对植物生长和发育产生负面影响.
维持离子稳态和适当的代谢对于植物在压力下生存至关重要.
植物激素在植物对环境挑战的反应中发挥着重要作用.

研究的目的:

为了研究外源24-epibrassinolide (EBR) 在NaHCO3压力下对黄瓜植物的影响.
阐明EBR增强黄瓜性耐受性的机制.
评估EBR对离子稳态,代谢和植物激素平衡的影响.

主要方法:

黄瓜植物经历了NaHCO3压力,并没有外部EBR应用.
这些测量包括离子含量 (Na+, K+, Mg2+, Ca2+),基因表达 (NHX, SOS1),酶活性 (H+-ATPase, H+-PPase, NR, GS, GOGAT, GOT, GPT, GDH) 和植物激素水平 (ABA, IAA, GA3).

主要成果:

EBR的应用显著减少了Na+的积累,并改善了Na+/离子比率.
EBR增强了NHX和SOS1基因的表达,并增加了关键离子运输酶的活性.
EBR缓解了代谢中断,恢复了酶活动和含量,同时降低了NH4+的毒性.
EBR应用调节了植物激素水平,增加IAA和GA3,同时减少ABA,从而恢复激素平衡.

结论:

外源EBR有效地提高了黄瓜植物的性耐受性.
以EBR为媒介的改善归因于调节代谢,离子稳态和植物激素反应.
EBR代表了一种有前途的策略,用于减轻农作物中性压力的不利影响.

关键词:

性压力是一种性压力.黄铜化物黄铜化物黄瓜黄瓜的使用方法离子平衡的离子平衡.的新陈代谢的新陈代谢植物激素的平衡.

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