Inhibition of rhizobial cheaters by the host Medicago truncatula involves repression of symbiotic functions and induction of defense

IF 8.1 1区生物学 Q1 PLANT SCIENCES

New Phytologist Pub Date : 2025-09-05 DOI:10.1111/nph.70494

Min Chen, Axelle Raisin, Natalie Judkins, Pierre-Marie Allard, Emmanuel Défossez, Michael Stumpe, Inmaculada Yruela, Manuel Becana, Didier Reinhardt

引用次数: 0

Abstract

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寄主紫花苜蓿对根瘤菌骗子的抑制包括抑制共生功能和诱导防御。

在植物与微生物的共生相互作用中，寄主在微生物伴侣身上投入了大量的资源。如果这种微生物没有相应的共生利益，它就被认为是骗子。宿主用负反馈机制（制裁）来回应作弊者，以防止因被利用而导致的健康缺陷。本文研究了苜蓿与具有固氮作用的中华根瘤菌的共生关系。我们通过三种方式操纵伙伴之间的资源交换：利用氮酶缺陷的突变根瘤菌；用氩气代替大气中的氮气；并为宿主提供丰富的氮肥。我们通过检查伴侣双方的代谢组和蛋白质组来跟踪模拟作弊的后果。我们发现制裁发生在多个层面。特别是，我们观察到基本共生功能的抑制和中枢代谢的变化，这可能与微生物适应性相关，因此可能有助于制裁。此外，制裁还会引发广泛的防御标记。深入了解制裁的多层次现象，对其遗传解剖和培育高效共生的豆科作物具有重要意义。

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

New Phytologist 生物-植物科学

自引率

5.30%

发文量

728

期刊介绍： New Phytologist is an international electronic journal published 24 times a year. It is owned by the New Phytologist Foundation, a non-profit-making charitable organization dedicated to promoting plant science. The journal publishes excellent, novel, rigorous, and timely research and scholarship in plant science and its applications. The articles cover topics in five sections: Physiology & Development, Environment, Interaction, Evolution, and Transformative Plant Biotechnology. These sections encompass intracellular processes, global environmental change, and encourage cross-disciplinary approaches. The journal recognizes the use of techniques from molecular and cell biology, functional genomics, modeling, and system-based approaches in plant science. Abstracting and Indexing Information for New Phytologist includes Academic Search, AgBiotech News & Information, Agroforestry Abstracts, Biochemistry & Biophysics Citation Index, Botanical Pesticides, CAB Abstracts®, Environment Index, Global Health, and Plant Breeding Abstracts, and others.