Arbuscular mycorrhizal fungal interactions bridge the support of root-associated microbiota for slope multifunctionality in an erosion-prone ecosystem
Qiu, Tianyi (Wuhan University of Technology)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Chen, Yinglong (The University of Western Australia)
Sardans i Galobart, Jordi (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Yu, Jialuo (Chinese Academy of Sciences)
Xu, Zhiyuan (Northwest A&F University)
Cui, Qingliang (Chinese Academy of Sciences)
Liu, Ji (Central China Normal University)
Cui, Yongxing (Freie Universität Berlin)
Zhao, Shuling (Chinese Academy of Sciences)
Chen, Jing (Renmin Hospital of Wuhan University)
Wang, Yunqiang (Chinese Academy of Sciences)
Fang, Linchuan (Chinese Academy of Sciences)

Data:	2024
Resum:	The role of diverse soil microbiota in restoring erosion-induced degraded lands is well recognized. Yet, the facilitative interactions among symbiotic arbuscular mycorrhizal (AM) fungi, rhizobia, and heterotrophic bacteria, which underpin multiple functions in eroded ecosystems, remain unclear. Here, we utilized quantitative microbiota profiling and ecological network analyses to explore the interplay between the diversity and biotic associations of root-associated microbiota and multifunctionality across an eroded slope of a Robinia pseudoacacia plantation on the Loess Plateau. We found explicit variations in slope multifunctionality across different slope positions, associated with shifts in limiting resources, including soil phosphorus (P) and moisture. To cope with P limitation, AM fungi were recruited by R. pseudoacacia, assuming pivotal roles as keystones and connectors within cross-kingdom networks. Furthermore, AM fungi facilitated the assembly and composition of bacterial and rhizobial communities, collectively driving slope multifunctionality. The symbiotic association among R. pseudoacacia, AM fungi, and rhizobia promoted slope multifunctionality through enhanced decomposition of recalcitrant compounds, improved P mineralization potential, and optimized microbial metabolism. Overall, our findings highlight the crucial role of AM fungal-centered microbiota associated with R. pseudoacacia in functional delivery within eroded landscapes, providing valuable insights for the sustainable restoration of degraded ecosystems in erosion-prone regions.
Ajuts:	Agencia Estatal de Investigación PID2020-115770RB-I Agencia Estatal de Investigación PID2022-140808NB-I00 Agencia Estatal de Investigación TED2021-132627B-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-1333
Nota:	Altres ajuts: Fundación Ramón Areces grant CIVP20A6621
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Arbuscular mycorrhizal fungi ; Degraded ecosystems ; Multifunctionality ; Root-associated microbiota ; Slope ; Soil erosion
Publicat a:	iMeta, Vol. 3, Issue 3 (June 2024) , art. e187, ISSN 2770-596X

DOI: 10.1002/imt2.187
PMID: 38898982

19 p, 2.8 MB

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