Microbial N-cycling gene abundance is affected by cover crop specie and development stage in an integrated cropping system
| Autor: | Beatriz Maria Ferrari Borges, Kassiano Felipe Rocha, Marcio F. A. Leite, Eiko E. Kuramae, Ciro Antonio Rosolem |
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| Přispěvatelé: | Microbial Ecology (ME), Universidade Estadual Paulista (Unesp), Netherlands Inst Ecol NIOO KNAW, Universidade de São Paulo (USP) |
| Rok vydání: | 2020 |
| Předmět: |
Crops
Agricultural Nitrogen Palisade grass Microorganism Nitrification inhibition Zea mays Biochemistry Microbiology Soil 03 medical and health sciences Microbial ecology Ammonia RNA Ribosomal 16S Genetics Urochloa Cover crop Guinea grass Molecular Biology Nitrogen cycle Soil Microbiology 030304 developmental biology Ammonia-oxidizing bacteria 0303 health sciences Bacteria biology 030306 microbiology food and beverages Agriculture Plan_S-Compliant_NO General Medicine Nitrogen Cycle biology.organism_classification Archaea Nitrification Ammonia-oxidizing archaea Agronomy international Nitrogen fixation Oxidation-Reduction Panicum |
| Zdroj: | Archives of Microbiology, 202(7). Springer Verlag GmbH Web of Science Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| ISSN: | 1432-072X 0302-8933 |
| Popis: | Made available in DSpace on 2020-12-10T19:59:26Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-05-20 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) UK by the BBRSC/Newton Fund Grasses of the Urochloa genus have been widely used in crop-livestock integration systems or as cover crops in no-till systems such as in rotation with maize. Some species of Urochloa have mechanisms to reduce nitrification. However, the responses of microbial functions in crop-rotation systems with grasses and its consequence on soil N dynamics are not well-understood. In this study, the soil nitrification potential and the abundance of ammonifying microorganisms, total bacteria and total archaea (16S rRNA gene), nitrogen-fixing bacteria (NFB, nifH), ammonia-oxidizing bacteria (AOB, amoA) and archaea (AOA, amoA) were assessed in soil cultivated with ruzigrass (Urochloa ruziziensis), palisade grass (Urochloa brizantha) and Guinea grass (Panicum maximum). The abundance of ammonifying microorganisms was not affected by ruzigrass. Ruzigrass increased the soil nitrification potential compared with palisade and Guinea grass. Ruzigrass increased the abundance of N-fixing microorganisms at the middle and late growth stages. The abundances of nitrifying microorganisms and N-fixers in soil were positively correlated with the soil N-NH4+ content. Thus, biological nitrogen fixation might be an important input of N in systems of rotational production of maize with forage grasses. The abundance of microorganisms related to ammonification, nitrification and nitrogen fixing and ammonia-oxidizing archea was related to the development stage of the forage grass. Sao Paulo State Univ, Sch Agr Sci, Dept Crop Sci, Av Univ 3780, BR-18610034 Botucatu, SP, Brazil Netherlands Inst Ecol NIOO KNAW, Dept Microbial Ecol, Wageningen, Netherlands Univ Sao Paulo, Ctr Nucl Energy Agr, Piracicaba, Brazil Sao Paulo State Univ, Sch Agr Sci, Dept Crop Sci, Av Univ 3780, BR-18610034 Botucatu, SP, Brazil FAPESP: 2015/50305-8 UK by the BBRSC/Newton Fund: BB/N013201/1 |
| Databáze: | OpenAIRE |
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