Priming for seagrass resilience: DNA methylation and transcriptomic insights into heat stress memory in Posidonia oceanica seedlings

IF 8.3 1区生物学 Q1 PLANT SCIENCES

New Phytologist Pub Date : 2025-06-10 DOI:10.1111/nph.70246

Jessica Pazzaglia, Luca Ambrosino, Samuele Greco, Làzaro Marin-Guirao, Slavica Milanovic-Ivanovic, Koen J. F. Verhoeven, Gabriele Procaccini

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引用次数: 0

Abstract

Priming, a process that enables plants to ‘remember’ past stress and improve responses to future stressors, is underexplored in seagrasses. This study investigated gene expression and DNA methylation in Posidonia oceanica seedlings during priming and subsequent heat stress (triggering), marking the first analysis of priming regulation in this species.
Priming induced significant transcriptomic alterations, including the activation of DNA repair and metabolic pathways, which may underlie the enhanced resilience to repeated thermal stress that was observed previously.
Primed seedlings invested more in growth, in comparison with nonprimed ones, prioritizing stress response.
The findings reveal key molecular and epigenetic mechanisms involved in thermal response, opening pathways for stress memory research in marine plants and supporting their potential role in ecological adaptation and restoration efforts.

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海草恢复力的启动：海草幼苗热胁迫记忆的DNA甲基化和转录组学见解。

启动是一种使植物“记住”过去的压力并改善对未来压力的反应的过程，但在海草中尚未得到充分研究。本研究研究了Posidonia oceanica幼苗在启动和随后的热胁迫（触发）过程中的基因表达和DNA甲基化，首次分析了该物种的启动调控。启动诱导了显著的转录组改变，包括DNA修复和代谢途径的激活，这可能是之前观察到的对反复热应激的增强恢复能力的基础。与未启动的幼苗相比，启动的幼苗在生长上投入更多，优先考虑应激反应。这些发现揭示了海洋植物热响应的关键分子和表观遗传机制，为海洋植物的应激记忆研究开辟了途径，并支持了它们在生态适应和恢复工作中的潜在作用。

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来源期刊

New Phytologist 生物-植物科学

自引率

5.30%

发文量

728

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