Fungal diversity regulates plant-soil feedbacks in temperate grassland.

Fungal diversity regulates plant-soil feedbacks in temperate grassland.
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DOI:
10.1126/sciadv.aau4578
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发表时间:
2018-11
期刊:
影响因子:
13.6
通讯作者:
Bardgett RD
Bardgett RD
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Semchenko M;Leff JW;Lozano YM;Saar S;Davison J;Wilkinson A;Jackson BG;Pritchard WJ;De Long JR;Oakley S;Mason KE;Ostle NJ;Baggs EM;Johnson D;Fierer N;Bardgett RD

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植物生长动力学是由相关的致病性,腐生性和互惠土壤真菌的多样性。植物与土壤微生物群落之间的反馈在植被动态中起着重要作用,但其内在机制尚未阐明。在这里,我们表明,多样性的假定致病,菌根,腐食真菌是一个主要的调节植物土壤反馈在广泛的温带草原植物物种。我们表明,植物物种与资源获取的特点,如高芽氮浓度和细根,吸引不同的社区推定的真菌病原体和专业腐养菌,和菌根真菌的多样性较低,导致植物生长抑制土壤中所占据的同一物种。此外,土壤性质调节与肥沃土壤的反馈,促进土壤真菌和植物之间的拮抗关系。本研究通过揭示土壤性质、植物资源获取策略和土壤真菌公会多样性之间的基本联系,提高了我们预测植物-土壤反馈和植被动态的能力。
Plant growth dynamics are shaped by the diversity of associating pathogenic, saprotrophic, and mutualistic soil fungi. Feedbacks between plants and soil microbial communities play an important role in vegetation dynamics, but the underlying mechanisms remain unresolved. Here, we show that the diversity of putative pathogenic, mycorrhizal, and saprotrophic fungi is a primary regulator of plant-soil feedbacks across a broad range of temperate grassland plant species. We show that plant species with resource-acquisitive traits, such as high shoot nitrogen concentrations and thin roots, attract diverse communities of putative fungal pathogens and specialist saprotrophs, and a lower diversity of mycorrhizal fungi, resulting in strong plant growth suppression on soil occupied by the same species. Moreover, soil properties modulate feedbacks with fertile soils, promoting antagonistic relationships between soil fungi and plants. This study advances our capacity to predict plant-soil feedbacks and vegetation dynamics by revealing fundamental links between soil properties, plant resource acquisition strategies, and the diversity of fungal guilds in soil.
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