Please use this identifier to cite or link to this item: http://dx.doi.org/10.25673/103482
Title: Functional potential of soil microbial communities and their subcommunities varies with tree mycorrhizal type and tree diversity
Author(s): Singavarapu, Bala
Du, Jianqing
Beugnon, RémyLook up in the Integrated Authority File of the German National Library
Cesarz, Simone
Eisenhauer, NicoLook up in the Integrated Authority File of the German National Library
Xue, Kai
Wang, YanfenLook up in the Integrated Authority File of the German National Library
Bruelheide, HelgeLook up in the Integrated Authority File of the German National Library
Issue Date: 2023
Type: Article
Language: English
Abstract: Soil microbial communities play crucial roles in the earth’s biogeochemical cycles. Yet, their genomic potential for nutrient cycling in association with tree mycorrhizal type and tree-tree interactions remained unclear, especially in diverse tree communities. Here, we studied the genomic potential of soil fungi and bacteria with arbuscular (AM) and ectomycorrhizal (EcM) conspecific tree species pairs (TSPs) at three tree diversity levels in a subtropical tree diversity experiment (BEF-China). The soil fungi and bacteria of the TSPs’ interaction zone were characterized by amplicon sequencing, and their subcommunities were determined using a microbial interkingdom co-occurrence network approach. Their potential genomic functions were predicted with regard to the three major nutrients carbon (C), nitrogen (N), and phosphorus (P) and their combinations. We found the microbial subcommunities that were significantly responding to different soil characteristics. The tree mycorrhizal type significantly influenced the functional composition of these co-occurring subcommunities in monospecific stands and two-tree-species mixtures but not in mixtures with more than three tree species (here multi-tree-species mixtures). Differentiation of subcommunities was driven by differentially abundant taxa producing different sets of nutrient cycling enzymes across the tree diversity levels, predominantly enzymes of the P (n = 11 and 16) cycles, followed by the N (n = 9) and C (n = 9) cycles, in monospecific stands and two-tree-species mixtures, respectively. Fungi of the Agaricomycetes, Sordariomycetes, Eurotiomycetes, and Leotiomycetes and bacteria of the Verrucomicrobia, Acidobacteria, Alphaproteobacteria, and Actinobacteria were the major differential contributors (48% to 62%) to the nutrient cycling functional abundances of soil microbial communities across tree diversity levels. Our study demonstrated the versatility and significance of microbial subcommunities in different soil nutrient cycling processes of forest ecosystems.
URI: https://opendata.uni-halle.de//handle/1981185920/105434
http://dx.doi.org/10.25673/103482
Open Access: Open access publication
License: (CC BY 4.0) Creative Commons Attribution 4.0(CC BY 4.0) Creative Commons Attribution 4.0
Journal Title: Microbiology spectrum
Publisher: ASM
Publisher Place: Birmingham, Ala.
Volume: 11
Issue: 2
Original Publication: 10.1128/spectrum.04578-22
Page Start: 1
Page End: 19
Appears in Collections:Open Access Publikationen der MLU

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