Amazon forest-to-agriculture conversion alters rhizosphere microbiome composition while functions are kept
| Autor: | Goss-Souza, Dennis, Mendes, Lucas William, Borges, Clovis Daniel, Rodrigues, Jorge LM, Tsai, Siu Mui |
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| Rok vydání: | 2019 |
| Předmět: |
Conservation of Natural Resources
metagenomics Bacteria Life on Land Microbiota Amazon biodiversity homogenization Agriculture Forests Biological Sciences complex mixtures Medical and Health Sciences Microbiology plant microbiome Soil Rhizosphere Zero Hunger Soybeans soybean rhizosphere Soil Microbiology Environmental Sciences |
| Zdroj: | FEMS microbiology ecology, vol 95, iss 3 Goss-Souza, Dennis; Mendes, Lucas William; Borges, Clovis Daniel; Rodrigues, Jorge LM; & Tsai, Siu Mui. (2019). Amazon forest-to-agriculture conversion alters rhizosphere microbiome composition while functions are kept.. FEMS microbiology ecology, 95(3). doi: 10.1093/femsec/fiz009. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/39p5d8wm |
| DOI: | 10.1093/femsec/fiz009. |
| Popis: | The conversion of native forest to agriculture is the main cause of microbial biodiversity loss in Amazon soils. In order to better understand this effect, we used metagenomics to investigate microbial patterns and functions in bulk soil and rhizosphere of soybean, in a long-term forest-to-agriculture conversion. Long-term forest-to-agriculture led to microbial homogenization and loss of diversity in both bulk soil and rhizosphere, mainly driven by decreasing aluminum concentration and increased cations saturation in soil, due to liming and fertilization in long-term no-till cropping. Data revealed that long-term no-till cropping culminated in a decrease in Acidobacteria, Actinobacteria and Proteobacteria abundances. However, α- and β-Proteobacteria abundances were higher in the rhizosphere than in bulk soil, regardless of the time after forest-to-agriculture conversion. Changes in functional potential occurred predominantly in bulk soil, with decreases in functions related to potassium metabolism and virulence, disease and defense, while functions related to nucleic acids metabolism increased. Functions in the soybean rhizosphere remained stable, except for those related to potassium metabolism, which decreased after 20-year no-till cropping. Together, our results show that the soybean root system selects microbial taxa via trade-offs, to maintain functional resilience in the rhizosphere microbiome over time. |
| Databáze: | OpenAIRE |
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