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Phosphorus-transforming microbes enhance phosphatase catalytic efficiency to alleviate phosphorus limitation under nitrogen and phosphorus additions in subtropical forest soil

文献类型：期刊论文

作者Liu, Shuang7,8; Zhang, Xinyu1,7,8; Wang, Huimin1,8; Kuzyakov, Yakov2,6; Pan, Junxiao7,8; Chen, Fusheng5; Wang, Fangchao5; Li, Dandan4; Tang, Yuqian3; Ma, Zeqing1,8
刊名SOIL BIOLOGY & BIOCHEMISTRY
出版日期2025-10-01
卷号209页码:109915
关键词Soil P availability Microbial P limitation Protist diversity Chinese fir Soil food webs Enzyme activities
ISSN号0038-0717
DOI10.1016/j.soilbio.2025.109915
产权排序1
文献子类Article
英文摘要Phosphatase catalytic efficiency (Vmax/Km) is a key determinant of soil phosphorus (P) availability and is governed by microbial P-transformations. In subtropical forest soils, low intrinsic P availability is constrained by atmospheric nitrogen (N) deposition, yet the effects of P-transforming microorganisms and microbial food webs on Vmax/Km remain unclear. This study quantifies how P-transforming microorganisms and microbial trophic interactions modulate phosphatase catalytic efficiency under N, P, and NP additions in subtropical Chinese fir plantations. Partial least squares path modelling revealed two dominant microbial pathways contributing to increased Vmax/Km: (i) N-induced acidification upregulated phosphate transporter genes (e.g., pstB), increasing microbial P uptake; P and NP additions alleviated microbial P limitation and downregulated P-starvation response genes (e.g., phoB), indicating a shift from stress-response to uptake-oriented strategies. (ii) P and NP additions increased upper trophic-level protist diversity, triggering a top-down microbial food web cascade that selectively enriched Acidobacteria, increased phosphatase catalytic efficiency, and increased P availability in soil. Overall, these gene-regulatory and trophic pathways explained over 60 % of the variation in phosphatase catalytic efficiency across all nutrient treatments. These findings challenge the traditional focus on phosphataseencoding genes alone and underscore the importance of (i) phosphate transport systems, like pstB gene, and (ii) keystone taxa, like Acidobacteria, in increasing Vmax/Km. This study provides a mechanistic foundation to raisephosphatase catalytic efficiency and alleviate P limitation through targeted microbial and genetic interventions in P-deficient subtropical forest soils.
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WOS关键词STOICHIOMETRY ; COMMUNITIES ; DEPOSITION ; BACTERIAL ; KINETICS ; RATES
WOS研究方向Agriculture
语种英语
WOS记录号WOS:001573664200001
出版者PERGAMON-ELSEVIER SCIENCE LTD
源URL[http://ir.igsnrr.ac.cn/handle/311030/216159]  
专题生态系统网络观测与模拟院重点实验室_外文论文
通讯作者Zhang, Xinyu
作者单位1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China;
2.Peoples Friendship Univ Russia RUDN Univ, Moscow 117198, Russia
3.China Univ Geosci, Sch Geog & Informat Engn, Hubei Key Lab Reg Ecol & Environm Change, Wuhan 430074, Peoples R China;
4.Northeast Forestry Univ, Coll Life Sci, Harbin 150040, Peoples R China;
5.Jiangxi Agr Univ, Coll Forestry, Nanchang 330045, Peoples R China;
6.Univ Goettingen, Dept Soil Sci Temperate Ecosyst, Dept Agr Soil Sci, D-37077 Gottingen, Germany;
7.Natl Ecosyst Sci Data Ctr, Beijing 100101, Peoples R China;
8.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China;
推荐引用方式
GB/T 7714		 Liu, Shuang,Zhang, Xinyu,Wang, Huimin,et al. Phosphorus-transforming microbes enhance phosphatase catalytic efficiency to alleviate phosphorus limitation under nitrogen and phosphorus additions in subtropical forest soil[J]. SOIL BIOLOGY & BIOCHEMISTRY,2025,209:109915.
APA Liu, Shuang.,Zhang, Xinyu.,Wang, Huimin.,Kuzyakov, Yakov.,Pan, Junxiao.,...&Ma, Zeqing.(2025).Phosphorus-transforming microbes enhance phosphatase catalytic efficiency to alleviate phosphorus limitation under nitrogen and phosphorus additions in subtropical forest soil.SOIL BIOLOGY & BIOCHEMISTRY,209,109915.
MLA Liu, Shuang,et al."Phosphorus-transforming microbes enhance phosphatase catalytic efficiency to alleviate phosphorus limitation under nitrogen and phosphorus additions in subtropical forest soil".SOIL BIOLOGY & BIOCHEMISTRY 209(2025):109915.

入库方式： OAI收割

来源：地理科学与资源研究所

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