Remodeling of membrane lipids associated with ABA-induced desiccation tolerance in Physcomitrium patens

IF 2.5 3区生物学 Q3 BIOCHEMISTRY & MOLECULAR BIOLOGY

Biochemical and biophysical research communications Pub Date : 2024-11-12 DOI:10.1016/j.bbrc.2024.150981

Buzhu Yu , Chuntao Wang , Yanxia Jia

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引用次数: 0

Abstract

Pretreatment of Physcomitrium patens with abscisic acid (ABA) has been shown to induce desiccation tolerance. While previous research suggests that ABA-induced production of proteins and soluble sugars contributes to desiccation stress tolerance, additional mechanisms underlying this tolerance remain unclear. In this study, we found that ABA pretreatment led to increased levels of digalactosyl diacylglycerol (DGDG), phosphatidylcholine (PC), and phosphatidylinositol (PI), along with a decrease in monogalactosyl diacylglycerol (MGDG). These changes elevated the MGDG/DGDG and PC/phosphatidylethanolamine (PE) ratios, potentially stabilizing membranes and enhancing desiccation tolerance. Furthermore, ABA pretreatment effectively prevented membrane lipid degradation during desiccation and subsequent rehydration. These findings highlight ABA's role in desiccation tolerance through membrane lipid modulation, providing new insights into stress tolerance mechanisms in bryophytes.

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与 ABA 诱导的斑鸠菊干燥耐受性相关的膜脂重塑

研究表明，用脱落酸（ABA）预处理斑鸠菊（Physcomitrium patens）可诱导其耐干燥性。虽然之前的研究表明，ABA 诱导的蛋白质和可溶性糖的产生有助于提高干燥胁迫耐受性，但这种耐受性的其他机制仍不清楚。在这项研究中，我们发现 ABA 预处理会导致二半乳糖基二酰甘油（DGDG）、磷脂酰胆碱（PC）和磷脂酰肌醇（PI）的水平升高，同时会导致单半乳糖基二酰甘油（MGDG）的水平降低。这些变化提高了 MGDG/DGDG 和 PC/磷脂酰乙醇胺（PE）的比率，可能会稳定膜并增强干燥耐受性。此外，ABA 预处理还能有效防止膜脂质在干燥和随后的复水过程中降解。这些发现强调了 ABA 通过调节膜脂在干燥耐受性中的作用，为研究红叶植物的胁迫耐受机制提供了新的视角。

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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来源期刊

Biochemical and biophysical research communications 生物-生化与分子生物学

CiteScore

6.10

自引率

0.00%

发文量

1400

审稿时长

14 days

期刊介绍： Biochemical and Biophysical Research Communications is the premier international journal devoted to the very rapid dissemination of timely and significant experimental results in diverse fields of biological research. The development of the "Breakthroughs and Views" section brings the minireview format to the journal, and issues often contain collections of special interest manuscripts. BBRC is published weekly (52 issues/year).Research Areas now include: Biochemistry; biophysics; cell biology; developmental biology; immunology ; molecular biology; neurobiology; plant biology and proteomics