植物代谢物与根瘤菌功能的相互作用增强了植物对干旱胁迫的耐受性

IF 10.1 1区 生物学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Anna Kazarina, Soumyadev Sarkar, Bryttan Adams, Brooke Vogt, Leslie Rodela, Sophia Pogranichny, Summer Powell, Hallie Wiechman, Leah Heeren, Nicholas Reese, Darcy Thompson, Qinghong Ran, Eli Hartung, Alina Akhunova, Eduard Akhunov, Loretta Johnson, Ari Jumpponen, Sonny T.M. Lee
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引用次数: 0

摘要

植物与微生物一起进化,使植物能够更好地应对非生物和生物压力。植物根系与当地土壤微生物之间的相互作用对环境适应和植物健康至关重要。植物积极调节其根际微生物群落组成,以招募特定的微生物,提高其在生态系统中的适应性。这项研究建立在先前的研究基础上,表明植物通过相互识别和选择性招募机制,优先招募本地环境特有的微生物,从而表现出“主场优势”。利用以基因和基因组为中心的方法,我们评估了根相关微生物的功能潜力,并分析了它们的宿主代谢物,以揭示可能调节gerardii宿主-微生物相互作用的代谢输出。我们发现适应干旱环境的植物承受的压力更小,产生的与压力相关的代谢物更少,影响了与压力缓解途径相关的基因的微生物招募。特别是,植物来源的三甲基赖氨酸与能够改善营养吸收、产生植物生长促进化合物和调节应激反应的微生物种群高度相关。本研究强调了寄主分泌物和微生物底物摄取之间的关键相互作用是根际组装的主要机制。我们证明植物积极产生代谢物来招募具有功能潜力的微生物种群,以增强其在压力环境中茁壮成长的能力。本研究为植物-微生物通讯、根际招募以及植物-微生物相互作用的复杂相互作用机制提供了见解。此外,它还强调了在应对气候变化时操纵根际微生物群以支持保护性农业的有希望的途径。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Interaction of plant-derived metabolites and rhizobiome functions enhances drought stress tolerance
Plants have evolved alongside microbes, enabling plants to better cope with abiotic and biotic stress. Interactions between plant roots and local soil microbes are critical for environmental adaptation and plant health. Plants actively regulate the microbial community composition in their rhizospheres to recruit specific microorganisms that enhance their fitness in the ecosystem they inhabit. This study builds on prior research suggesting that plants exhibit a “home field advantage” by preferentially recruiting microbes unique to their native environments, likely through mutual recognition and selective recruitment mechanisms. Using gene- and genome-centric approaches, we assess the functional potential of root-associated microbes and profile their host metabolites to uncover the metabolic outputs potentially regulating host‒microbe interactions in Andropogon gerardii. We find that plants adapted to drier environments experience less stress, producing fewer stress-related metabolites and impacting the recruitment of microbes with genes linked to stress relief pathways. In particular, plant-derived trimethyllysine is highly associated with microbial populations capable of improving nutrient uptake, producing plant growth-promoting compounds, and modulating stress responses. This study highlights the critical interplay between host exudates and microbial substrate uptake as the primary mechanism of rhizosphere assembly. We demonstrate that plants actively produce metabolites to recruit microbial populations with the functional potential to enhance their ability to thrive in stressful environments. This research provides insights into the mechanisms of plant–microbe communication, rhizosphere recruitment, and the complex interplay of plant–microbe interactions. Furthermore, it highlights promising avenues for manipulating rhizosphere microbiomes to support conservation agriculture when coping with climate change.
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来源期刊
Genome Biology
Genome Biology Biochemistry, Genetics and Molecular Biology-Genetics
CiteScore
21.00
自引率
3.30%
发文量
241
审稿时长
2 months
期刊介绍: Genome Biology stands as a premier platform for exceptional research across all domains of biology and biomedicine, explored through a genomic and post-genomic lens. With an impressive impact factor of 12.3 (2022),* the journal secures its position as the 3rd-ranked research journal in the Genetics and Heredity category and the 2nd-ranked research journal in the Biotechnology and Applied Microbiology category by Thomson Reuters. Notably, Genome Biology holds the distinction of being the highest-ranked open-access journal in this category. Our dedicated team of highly trained in-house Editors collaborates closely with our esteemed Editorial Board of international experts, ensuring the journal remains on the forefront of scientific advances and community standards. Regular engagement with researchers at conferences and institute visits underscores our commitment to staying abreast of the latest developments in the field.
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