Land conversion to agriculture induces taxonomic homogenization of soil microbial communities globally

Ziheng Peng, Xun Qian, Yu Liu, Xiaomeng Li, Hang Gao, Yining An, Jiejun Qi, Lan Jiang, Yiran Zhang, Shi Chen, Haibo Pan, Beibei Chen, Chunling Liang, Marcel G. A. Heijden, Gehong Wei () and Shuo Jiao ()
Additional contact information
Ziheng Peng: Northwest A&F University
Xun Qian: Northwest A&F University
Yu Liu: Northwest A&F University
Xiaomeng Li: Northwest A&F University
Hang Gao: Northwest A&F University
Yining An: Northwest A&F University
Jiejun Qi: Northwest A&F University
Lan Jiang: Northwest A&F University
Yiran Zhang: Northwest A&F University
Shi Chen: Northwest A&F University
Haibo Pan: Northwest A&F University
Beibei Chen: Northwest A&F University
Chunling Liang: Northwest A&F University
Marcel G. A. Heijden: Agroscope
Gehong Wei: Northwest A&F University
Shuo Jiao: Northwest A&F University

Nature Communications, 2024, vol. 15, issue 1, 1-13

Abstract: Abstract Agriculture contributes to a decline in local species diversity and to above- and below-ground biotic homogenization. Here, we conduct a continental survey using 1185 soil samples and compare microbial communities from natural ecosystems (forest, grassland, and wetland) with converted agricultural land. We combine our continental survey results with a global meta-analysis of available sequencing data that cover more than 2400 samples across six continents. Our combined results demonstrate that land conversion to agricultural land results in taxonomic and functional homogenization of soil bacteria, mainly driven by the increase in the geographic ranges of taxa in croplands. We find that 20% of phylotypes are decreased and 23% are increased by land conversion, with croplands enriched in Chloroflexi, Gemmatimonadota, Planctomycetota, Myxcoccota and Latescibacterota. Although there is no significant difference in functional composition between natural ecosystems and agricultural land, functional genes involved in nitrogen fixation, phosphorus mineralization and transportation are depleted in cropland. Our results provide a global insight into the consequences of land-use change on soil microbial taxonomic and functional diversity.

Date: 2024
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DOI: 10.1038/s41467-024-47348-8

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