干旱启动诱导的应激记忆通过激活γ-氨基丁酸调控的途径提高匍匐翦股颖随后的耐旱或耐热性。

IF 3.6 3区 生物学 Q1 PLANT SCIENCES Plant Biology Pub Date : 2026-04-17 Epub Date: 2024-03-21 DOI:10.1111/plb.13636
Y. Yuan, M. Tan, M. Zhou, M. J. Hassan, L. Lin, J. Lin, Y. Zhang, Z. Li
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引用次数: 0

摘要

反复干旱可诱导植物产生胁迫记忆,从而诱导其对高温或干旱等后续胁迫的耐受性。干旱诱导(DP)是提高对各种胁迫耐受性的有效方法;然而,DP诱导胁迫记忆的潜在机制尚未得到充分研究。我们研究了多年生匍匐翦股颖的生理反应、GABA和NO代谢、热休克因子(HSF)和脱水素(DHN)途径变化相关的DP调控的后续耐旱性或耐热性。经过两个周期的DP处理后,植株可以恢复,DP处理的植株对随后的干旱或热胁迫的耐受性显著提高,叶片RWC、叶绿素含量、光化学效率和细胞膜稳定性都有所提高。在随后的干旱或热胁迫下,DP通过提高总抗氧化能力明显减轻了氧化损伤。通过激活谷氨酸脱羧酶活性和抑制 GABA 转氨酶活性,DP 能显著增加内源 GABA。在随后的干旱或热胁迫下,DP还能增强NO的积累,这取决于NOS的活性。在干旱或热胁迫下,DP 上调了 HSF 和 DHN 通路中多个转录因子、热休克蛋白和 DHN 的转录水平,但在这些通路中,DP 调节的耐热性与耐旱性存在差异。研究结果表明,在反复中度干旱条件下,DP能提高植物随后对干旱或热胁迫的耐受性,这与GABA调控的途径有关,为了解胁迫记忆在植物适应复杂环境胁迫中的作用提供了新的视角。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Drought priming-induced stress memory improves subsequent drought or heat tolerance via activation of γ-aminobutyric acid-regulated pathways in creeping bentgrass

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来源期刊
Plant Biology
Plant Biology 生物-植物科学
CiteScore
8.20
自引率
2.60%
发文量
109
审稿时长
3 months
期刊介绍: Plant Biology is an international journal of broad scope bringing together the different subdisciplines, such as physiology, molecular biology, cell biology, development, genetics, systematics, ecology, evolution, ecophysiology, plant-microbe interactions, and mycology. Plant Biology publishes original problem-oriented full-length research papers, short research papers, and review articles. Discussion of hot topics and provocative opinion articles are published under the heading Acute Views. From a multidisciplinary perspective, Plant Biology will provide a platform for publication, information and debate, encompassing all areas which fall within the scope of plant science.
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