Occupancy as a key attribute linking saprotrophic fungi to soil carbon decompositionOA
Understanding how fungal biogeography shapes ecosystem processes is central to predicting biogeochemical responses to environmental change.However,the properties of saprotrophic fungi that link their distribution patterns to belowground carbon cycling remain unclear.Here,we provide a comprehensive assessment linking widespread(high-occurrence)and narrowly distributed(low-occurrence)saprotrophic fungi(saprotrophs)to carbon decomposition processes across a broad latitudinal gradient from tropical to boreal zones.Our results show that the diversity of saprotrophic fungi is shaped by distinct community assembly processes,which in turn generate contrasting geographic patterns across latitudes.Widespread saprotrophs are mainly structured by large-scale climatic and local soil variables(environmental filtering)and show increasing diversity toward higher latitudes,whereas narrow-ranged saprotrophs are primarily constrained by the regional species pool(dispersal filtering),leading to declining diversity with latitude.By integrating large-scale biogeographic data with DNA stable isotope probing experiment,we provide evidence that fungal taxa actively participating in straw decomposition are dominated by widespread saprotrophs,underscoring their essential role in carbon cycling.Our findings highlight occupancy as a key biogeographic attribute regulating fungal contributions to carbon cycling and provide a predictive framework for understanding how belowground biodiversity shapes soil carbon dynamics under global change.
Ziheng Peng;Yingyi Fu;Bernhard Schmid;Zhiheng Wang;Jiejun Qi;Yu Luo;Gehong Wei;Shuo Jiao
State Key Laboratory for Crop Stress Resistance and High-Efficiency Production,College of Natural Resources and Environment,Northwest A&F University,Yangling 712100,China Shaanxi Key Laboratory of Agricultural and Environmental Microbiology,College of Life Sciences,Northwest A&F University,Yangling 712100,China State Key Laboratory of Vegetation Structure,Function and Construction(VegLab),Ministry of Education Key Laboratory of Earth Surface Processes,College of Urban and Environmental Sciences,Peking University,Beijing 100871,ChinaInstitute of Soil and Water Resources and Environmental Science,Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment,Zhejiang University,Hangzhou 310058,ChinaRemotes Sensing Laboratories,Department of Geography,University of Zürich,Zürich 8057,SwitzerlandState Key Laboratory of Vegetation Structure,Function and Construction(VegLab),Ministry of Education Key Laboratory of Earth Surface Processes,College of Urban and Environmental Sciences,Peking University,Beijing 100871,ChinaShaanxi Key Laboratory of Agricultural and Environmental Microbiology,College of Life Sciences,Northwest A&F University,Yangling 712100,ChinaInstitute of Soil and Water Resources and Environmental Science,Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment,Zhejiang University,Hangzhou 310058,ChinaShaanxi Key Laboratory of Agricultural and Environmental Microbiology,College of Life Sciences,Northwest A&F University,Yangling 712100,ChinaState Key Laboratory for Crop Stress Resistance and High-Efficiency Production,College of Natural Resources and Environment,Northwest A&F University,Yangling 712100,China Shaanxi Key Laboratory of Agricultural and Environmental Microbiology,College of Life Sciences,Northwest A&F University,Yangling 712100,China
农业科技
occupancysoil fungiwidespread speciesecological processescarbon decompositiongeographic patterns
《National Science Review》 2026 (12)
P.92-105,14
supported by the Scientific Research Innova-tion Capability Support Project for Young Faculty(SRICSPYF-ZY2025130)the National Natural Science Foundation of China(42477129 and 32501488)the Postdoctoral Fellow-ship Program of China Postdoctoral Science Foundation(BX20250143 and 2025M782543)the Research Fund of the State Key Laboratory for Vegetation Structure,Function and Construction(VegLabOF2025017)the Open Fund(YJD-KEJJ202303)of Key Laboratory of Saline-alkali Soil Improve-ment and Utilization(Saline-alkali land in arid and semi-arid regions),Ministry of Agriculture and Rural Affairs,China.
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