Rare microbial taxa as the major drivers of ecosystem multifunctionality in long-term fertilized soils

Soil microbial communities play an essential role in driving multiple functions (i.e., multifunctionality) that are central to the global biogeochemical cycles. Long-term fertilization has been reported to reduce the soil microbial diversity, however, the impact of fertilization on multifunctionalit...

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Vydané v:	Soil biology & biochemistry Ročník 141; číslo C; s. 107686
Hlavní autori:	Chen, Qing-Lin, Ding, Jing, Zhu, Dong, Hu, Hang-Wei, Delgado-Baquerizo, Manuel, Ma, Yi-Bing, He, Ji-Zheng, Zhu, Yong-Guan
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	United Kingdom Elsevier Ltd 01.02.2020 Elsevier
Predmet:	algorithms Ascomycota biodiversity biogeochemical cycles Biogeochemical cycling Biological processes Cyanobacteria ecological function Ecosystem functions ecosystems fertilizer application fungi genes Glomeromycota microbial communities Microbial diversity mineral fertilizers organic fertilizers Proteobacteria quantitative polymerase chain reaction Rare taxa regression analysis soil soil microorganisms Microbial diversity Rare taxa Biogeochemical cycling Biological processes Ecosystem functions
ISSN:	0038-0717, 1879-3428
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Shrnutí:	Soil microbial communities play an essential role in driving multiple functions (i.e., multifunctionality) that are central to the global biogeochemical cycles. Long-term fertilization has been reported to reduce the soil microbial diversity, however, the impact of fertilization on multifunctionality and its relationship with soil microbial diversity remains poorly understood. We used amplicon sequencing and high-throughput quantitative-PCR array to characterize the microbial community compositions and 70 functional genes in a long-term experimental field station with multiple inorganic and organic fertilization treatments. Compared with inorganic fertilization, the application of organic fertilizer improved the soil multifunctionality, which positively correlated with the both bacterial and fungal diversity. Random Forest regression analysis indicated that rare microbial taxa (e.g. Cyanobacteria and Glomeromycota) rather than the dominant taxa (e.g. Proteobacteria and Ascomycota) were the major drivers of multifunctionality, suggesting that rare taxa had an over-proportional role in biological processes. Therefore, preserving the diversity of soil microbial communities especially the rare microbial taxa could be crucial to the sustainable provision of ecosystem functions in the future. [Display omitted] •Inorganic fertilization decreased soil multifunctionality.•Organic fertilization increased microbial diversity and multifunctionality.•Rare microbial taxa had an over-proportional role in multifunctionality.
Bibliografia:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 USDOE Office of Electricity (OE), Advanced Grid Research & Development. Power Systems Engineering Research 2017YFE0107300; 2016YFD0800205
ISSN:	0038-0717 1879-3428
DOI:	10.1016/j.soilbio.2019.107686