Agricultural disturbance reduces arbuscular mycorrhizal fungal diversity and biomass by excluding specialist species.

IF 8.1 1区生物学 Q1 PLANT SCIENCES

New Phytologist Pub Date : 2025-09-04 DOI:10.1111/nph.70548

Tanel Vahter,Alar Astover,John Davison,Inga Hiiesalu,Anne Ingver,Reine Koppel,Siqiao Liu,Evelin Loit-Harro,Anne Luik,Jane Oja,Priit Penu,Siim-Kaarel Sepp,Merili Simmer,Liina Talgre,Ilmar Tamm,Ülle Tamm,Martti Vasar,A Y Ayesh Piyara Wipulasena,Martin Zobel,Maarja Öpik

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引用次数: 0

Abstract

This study investigates how agricultural disturbance influences arbuscular mycorrhizal (AM) fungal diversity, biomass, and community niche structure. Utilizing niche concepts, we show that the AM fungal communities in intensively managed soils exhibited larger niche volumes and an increased proportion of culturable taxa, which negatively impacted biomass production. This process was primarily driven by the reduction in specialist taxa, indicating a functional homogenization of the community. Intensively disturbed low-biomass AM fungal communities were composed of species that can persist under low host abundance. Our findings reveal that intensive management disturbance significantly decreased AM fungal species richness and biomass simultaneously. Preserving AM fungal diversity is essential for maintaining their biomass and functionality, underscoring the detrimental effects of intensive agricultural practices on these critical soil organisms and their potential consequences for soil health and ecosystem functioning.

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农业干扰减少了丛枝菌根真菌的多样性和生物量，排除了专门的物种。

本研究探讨农业干扰对丛枝菌根真菌多样性、生物量和群落生态位结构的影响。利用生态位概念，我们发现在集约管理的土壤中，AM真菌群落表现出更大的生态位体积和可培养类群的比例增加，这对生物量生产产生了负面影响。这一过程主要是由专门分类群的减少所驱动的，表明群落的功能同质化。受到强烈干扰的低生物量AM真菌群落由能在低宿主丰度下持续存在的物种组成。结果表明，集约化管理干扰显著降低了AM真菌物种丰富度和生物量。保护AM真菌多样性对于维持其生物量和功能至关重要，强调了集约化农业实践对这些关键土壤生物的有害影响及其对土壤健康和生态系统功能的潜在后果。

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.