文献类型：期刊文献

英文题名：Spartina alterniflora invasion reduces soil microbial diversity and weakens soil microbial inter-species relationships in coastal wetlands

作者：Zhang, Tao[1,2] Song, Bing[1] Wang, Luwen[1] Li, Yong[3] Wang, Yi[1] Yuan, Min[4]

第一作者：Zhang, Tao

通信作者：Song, B[1]

机构：[1]Ludong Univ, Sch Resources & Environm Engn, Yantai, Peoples R China;[2]Northeast Normal Univ, Inst Peat & Mire Res, State Environm Protect Key Lab Wetland Ecol & Vege, Changchun, Peoples R China;[3]Chinese Acad Forestry, Inst Wetland Res, Beijing Key Lab Wetland Serv & Restorat, Beijing, Peoples R China;[4]Univ Alberta, Dept Renewable Resources, Edmonton, AB, Canada

年份：2024

卷号：15

外文期刊名：FRONTIERS IN MICROBIOLOGY

收录：;Scopus(收录号：2-s2.0-85201092573);WOS:【SCI-EXPANDED(收录号:WOS:001291084900001)】；

基金：The authors thank Scott X. Chang for his help in the manuscript writing.

语种：英文

外文关键词：co-occurrence network; microbial composition; microbial functions; plant invasion; Yellow River Delta

摘要：Soil microorganisms play a crucial role in the plant invasion process, acting as both drivers of and responders to plant invasion. However, the effects of plant invasion on the complexity and stability of co-occurrence networks of soil microbial communities remain unclear. Here, we investigated how the invasion of Spartina alterniflora affected the diversity, composition, and co-occurrence networks of soil bacterial and fungal communities in the Yellow River Delta, China. Compared to the native plant (Suaeda salsa), S. alterniflora invasion decreased the alpha-diversity of soil bacterial communities but did not affect that of fungal communities. The beta-diversity of soil bacterial and fungal communities under S. salsa and S. alterniflora habitats also differed dramatically. S. alterniflora invasion increased the relative abundance of the copiotrophic phylum Bacteroidota, whereas decreased the relative abundances of the oligotrophic phyla Acidobacteriota and Gemmatimonadota. Additionally, the relative abundance of Chytridiomycota, known for its role in degrading recalcitrant organic matter, increased substantially within the soil fungal community. Functional predictions revealed that S. alterniflora invasion increased the relative abundance of certain soil bacteria involved in carbon and nitrogen cycling, including aerobic chemoheterotrophy, nitrate reduction, and nitrate respiration. More importantly, S. alterniflora invasion reduced the complexity and stability of both soil bacterial and fungal community networks. The shifts in soil microbial community structure and diversity were mainly induced by soil available nutrients and soil salinity. Overall, our study highlights the profound impacts of S. alterniflora invasion on soil microbial communities, which could further indicate the modification of ecosystem functioning by invasive species.