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全球地中海生态系统的内微生物群和杂草入侵性

Marco A Molina-Montenegro^1,2, Ian S Acuña-Rodríguez^3,4, Cristian Atala⁵

¹Centre for Integrative Ecology (CIE), Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Chile. marco.molina@utalca.cl.

Nature communications

|February 23, 2026

概括

肠内微生物组增强了普通 dandelion (Taraxacum officinale) 在地中海生态系统中的入侵性. 完整的内微生物组提高了植物的健康和竞争力,影响了本地物种.

科学领域:

生态生态学生态生态学
微生物学微生物学
植物科学植物科学

背景情况:

地中海生态系统是生物多样性的热点,受到入侵性杂草的威胁.
内微生物组 (植物组织中的微生物) 影响植物的健康状况,但它们在杂草侵入性中的作用尚未得到充分研究.

研究的目的:

实验性评估内微生物组在Taraxacum officinale (普通 dandelion) 的入侵性中的作用.
调查内微生物群殖民的大对地中海生态系统的本地Asteraceae物种的影响.

主要方法:

一个五代除实验,比较T. officinale的健康状况与完整的与减少的本地种子传播的内微生物组.
与F1和F5世代公英对抗本地Asteraceae物种的竞争实验.
基因表达分析以确定分子机制.

主要成果:

与具有完整内微生物组的T. officinale相比,与具有减少内微生物组的T. officinale相比,具有完整内微生物组的T. officinale表现出更快,更有利的特征发展.
通过内微生物群殖民的 dandelions 显示出对本地Asteraceae的竞争力增强.
观察到,芽和土壤中基化学物质的合成增加,压力反应和DNA甲基化基因的表达变化.

结论:

内微生物组在增强Taraxacum officinale在地中海生态系统中的入侵性方面发挥着至关重要的作用.
由内生菌组介导的效应通过等位基因的生产和植物基因表达的调制,有助于杂草的竞争力.

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