Dynamic response of root-associated fungal community structure to nitrogen and phosphorus additions in a subtropical forest

IF 2 3区农林科学 Q3 ECOLOGY

Pedobiologia Pub Date : 2023-10-12 DOI:10.1016/j.pedobi.2023.150909

Shanshan Liu , Hao Yang , Luhong Zhou , Sheng-Sheng Jin , Lin Xie , Chengfang Lin , Ji-Zheng He , Yong Zheng

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引用次数: 0

Abstract

The impacts of nitrogen (N) and phosphorus (P) additions on root-associated fungi (RAF) of mixed roots in forest soils remain poorly understood. We investigated how RAF communities respond to N and P inputs in a subtropical montane forest using a time-series sampling approach. Our results showed that sampling time had a significant effect on total fungal richness, while the N addition had significant impacts on symbiotrophic rather than saprotrophic fungal richness. RAF community composition was strongly influenced by P addition treatments regardless of sampling time. Furthermore, we found that RAF community structure was mainly affected by soil NO₃^–-N, C/N and N/P ratios. This influence could be ascribed to the direct control of fungal activities and the indirect effects of fertilization on soil properties. Together, our findings highlight the importance of considering temporal variation in RAF responses to fertilization for a more comprehensive understanding of fungal community dynamics.

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亚热带森林根系真菌群落结构对氮磷添加量的动态响应

氮（N）和磷（P）的添加对森林土壤中混合根的根相关真菌（RAF）的影响仍然知之甚少。我们使用时间序列抽样方法调查了亚热带山地森林中RAF群落对氮和磷输入的反应。我们的结果表明，采样时间对真菌的总丰富度有显著影响，而氮的添加对共生真菌的丰富度有显著的影响，而不是腐生真菌的丰富度。无论采样时间如何，添加磷处理都会对RAF群落组成产生强烈影响。此外，我们发现RAF群落结构主要受土壤NO3--N、C/N和N/P比率的影响。这种影响可归因于真菌活性的直接控制和施肥对土壤性质的间接影响。总之，我们的发现强调了考虑RAF对受精反应的时间变化对于更全面地了解真菌群落动态的重要性。

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来源期刊

Pedobiologia 环境科学-生态学

CiteScore

4.20

自引率

8.70%

发文量

审稿时长

64 days

期刊介绍： Pedobiologia publishes peer reviewed articles describing original work in the field of soil ecology, which includes the study of soil organisms and their interactions with factors in their biotic and abiotic environments. Analysis of biological structures, interactions, functions, and processes in soil is fundamental for understanding the dynamical nature of terrestrial ecosystems, a prerequisite for appropriate soil management. The scope of this journal consists of fundamental and applied aspects of soil ecology; key focal points include interactions among organisms in soil, organismal controls on soil processes, causes and consequences of soil biodiversity, and aboveground-belowground interactions. We publish: original research that tests clearly defined hypotheses addressing topics of current interest in soil ecology (including studies demonstrating nonsignificant effects); descriptions of novel methodological approaches, or evaluations of current approaches, that address a clear need in soil ecology research; innovative syntheses of the soil ecology literature, including metaanalyses, topical in depth reviews and short opinion/perspective pieces, and descriptions of original conceptual frameworks; and short notes reporting novel observations of ecological significance.