Microbial community analysis of soils under different soybean cropping regimes in the Argentinean south-eastern Humid Pampas
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Microbial community analysis of soils under different soybean cropping regimes in the Argentinean south-eastern Humid Pampas. / Fernandez-Gnecco, Gabriela; Smalla, Kornelia; Maccario, Lorrie; Sørensen, Søren J.; Barbieri, Pablo; Consolo, Veronica F.; Covacevich, Fernanda; Babin, Doreen.
I: FEMS Microbiology Ecology, Bind 97, Nr. 3, fiab007, 2021.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Microbial community analysis of soils under different soybean cropping regimes in the Argentinean south-eastern Humid Pampas
AU - Fernandez-Gnecco, Gabriela
AU - Smalla, Kornelia
AU - Maccario, Lorrie
AU - Sørensen, Søren J.
AU - Barbieri, Pablo
AU - Consolo, Veronica F.
AU - Covacevich, Fernanda
AU - Babin, Doreen
N1 - © The Author(s) 2021. Published by Oxford University Press on behalf of FEMS.
PY - 2021
Y1 - 2021
N2 - Soil microbial communities are key players of ecosystem processes and important for crop and soil health. The Humid Pampas region in Argentina concentrates 75% of the national soybean production, which is based on intensive use of agrochemicals, monocropping and no-till. A long-term field experiment under no-till management in the southeast of the Argentinean Pampas provides a unique opportunity to compare soybean under monocropping with cultivation including alternating cover crops or in a three-phase rotation. We hypothesized that cropping regimes and season affect soil microbial community composition and diversity. Amplicon sequencing of 16S rRNA genes and internal transcribed spacer fragments showed a stronger microbial seasonal dynamic in conservation regimes compared to monocropping. In addition, several bacterial (e.g. Catenulispora, Streptomyces and Bacillus) and fungal genera (e.g. Exophiala) with cropping regime-dependent differential relative abundances were identified. Despite a temporal shift in microbial and chemical parameters, this study shows that long-term cropping regimes shaped the soil microbiota. This might have important implications for soil quality and soybean performance and should therefore be considered in the development of sustainable agricultural managements.
AB - Soil microbial communities are key players of ecosystem processes and important for crop and soil health. The Humid Pampas region in Argentina concentrates 75% of the national soybean production, which is based on intensive use of agrochemicals, monocropping and no-till. A long-term field experiment under no-till management in the southeast of the Argentinean Pampas provides a unique opportunity to compare soybean under monocropping with cultivation including alternating cover crops or in a three-phase rotation. We hypothesized that cropping regimes and season affect soil microbial community composition and diversity. Amplicon sequencing of 16S rRNA genes and internal transcribed spacer fragments showed a stronger microbial seasonal dynamic in conservation regimes compared to monocropping. In addition, several bacterial (e.g. Catenulispora, Streptomyces and Bacillus) and fungal genera (e.g. Exophiala) with cropping regime-dependent differential relative abundances were identified. Despite a temporal shift in microbial and chemical parameters, this study shows that long-term cropping regimes shaped the soil microbiota. This might have important implications for soil quality and soybean performance and should therefore be considered in the development of sustainable agricultural managements.
U2 - 10.1093/femsec/fiab007
DO - 10.1093/femsec/fiab007
M3 - Journal article
C2 - 33444447
VL - 97
JO - F E M S Microbiology Ecology
JF - F E M S Microbiology Ecology
SN - 0168-6496
IS - 3
M1 - fiab007
ER -
ID: 258496321