Microbial metabolic activity in Amazon floodplain forest and agricultural soils.

Autor:	Barros DJ; Graduate Program in Biodiversity and Biotechnology (BIONORTE), Federal University of Tocantins (UFT), Palmas, Brazil., Carvalho GA; Faculty of Engineering, Architecture and Urbanism, Federal University of Mato Grosso do Sul, Campo Grande, Brazil., de Chaves MG; Cell and Molecular Biology Laboratory, Center for Nuclear Energy in Agriculture, University of São Paulo (USP), Piracicaba, Brazil., Vanzela LS; Graduate Program in Environmental Sciences, University Brazil, Fernandópolis, Brazil., Kozusny-Andreani DI; Graduate Program in Environmental Sciences, University Brazil, Fernandópolis, Brazil., Guarda EA; Graduate Program in Biodiversity and Biotechnology (BIONORTE), Federal University of Tocantins (UFT), Palmas, Brazil., Neu V; Federal Rural University of Amazonia (UFRA), Belém, Brazil., de Morais PB; Graduate Program in Biodiversity and Biotechnology (BIONORTE), Federal University of Tocantins (UFT), Palmas, Brazil., Tsai SM; Cell and Molecular Biology Laboratory, Center for Nuclear Energy in Agriculture, University of São Paulo (USP), Piracicaba, Brazil., Navarrete AA; Cell and Molecular Biology Laboratory, Center for Nuclear Energy in Agriculture, University of São Paulo (USP), Piracicaba, Brazil.; Graduate Program in Environmental Sciences, University Brazil, Fernandópolis, Brazil.
Jazyk:	angličtina
Zdroj:	Frontiers in microbiology [Front Microbiol] 2023 May 24; Vol. 14, pp. 1144062. Date of Electronic Publication: 2023 May 24 (Print Publication: 2023).
DOI:	10.3389/fmicb.2023.1144062
Abstrakt:	Microorganisms play an essential role in ecosystem functions. An increasingly used method for conducting functional analyses of a soil microbial community is based on the physiological profile at the community level. This method allows the metabolic capacity of microorganisms to be assessed based on patterns of carbon consumption and derived indices. In the present study, the functional diversity of microbial communities was assessed in soils from seasonally flooded-forest (FOR) and -traditional farming systems (TFS) in Amazonian floodplains flooded with black, clear, and white water. The soils of the Amazon floodplains showed differences in the metabolic activity of their microbial communities, with a general trend in activity level of clear water floodplain > black water floodplain > white water floodplain. The redundancy analysis (RDA) indicated that soil moisture (flood pulse) was the most important environmental parameter in determining the metabolic activity of the soil microbial communities in the black, clear, and white floodplains. In addition, the variance partitioning analysis (VPA) indicated that the microbial metabolic activity of the soil was more influenced by water type (41.72%) than by seasonality (19.55%) and land use type (15.28%). The soil microbiota of the white water floodplain was different from that of the clear water and black water floodplains in terms of metabolic richness, as the white water floodplain was mainly influenced by the low substrate use during the non-flooded period. Taken together, the results show the importance of considering soils under the influence of flood pulses, water types, and land use as environmental factors when recognizing functional diversity and ecosystem functioning in Amazonian floodplains. Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. (Copyright © 2023 Barros, Carvalho, de Chaves, Vanzela, Kozusny-Andreani, Guarda, Neu, de Morais, Tsai and Navarrete.)
Databáze:	MEDLINE
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