期刊
NEW PHYTOLOGIST
卷 226, 期 1, 页码 232-243出版社
WILEY
DOI: 10.1111/nph.16345
关键词
community assembly; ecological processes; fungal ecology; fungal functional guilds; soil fertility
资金
- National Key Research and Development Program of China [2016YFD0200900]
- Innovative Research Team Development Plan of the Ministry of Education of China [IRT_17R56]
- Fundamental Research Funds for the Central Universities [KYT201802]
In the processes controlling ecosystem fertility, fungi are increasingly acknowledged as key drivers. However, our understanding of the rules behind fungal community assembly regarding the effect of soil fertility level remains limited. Using soil samples from typical tea plantations spanning c. 2167 km north-east to south-west across China, we investigated the assemblage complexity and assembly processes of 140 fungal communities along a soil fertility gradient. The community dissimilarities of total fungi and fungal functional guilds increased with increasing soil fertility index dissimilarity. The symbiotrophs were more sensitive to variations in soil fertility compared with pathotrophs and saprotrophs. Fungal networks were larger and showed higher connectivity as well as greater potential for inter-module connection in more fertile soils. Environmental factors had a slightly greater influence on fungal community composition than spatial factors. Species abundance fitted the Zipf-Mandelbrot distribution (niche-based mechanisms), which provided evidence for deterministic-based processes. Overall, the soil fungal communities in tea plantations responded in a deterministic manner to soil fertility, with high fertility correlated with complex fungal community assemblages. This study provides new insights that might contribute to predictions of fungal community complexity.
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