期刊
LETTERS IN APPLIED MICROBIOLOGY
卷 62, 期 3, 页码 264-268出版社
WILEY
DOI: 10.1111/lam.12535
关键词
BPP-like genes; diversity of beta-propeller phytases genes; maize rhizosphere; microbial structure; organic phosphorus mineralization
资金
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)
- Fundacao de Amparo a Pesquisa do Estado do Rio de Janeiro (FAPERJ)
- FAPESP [2012/14534-4]
- Conselho Nacional de Pesquisa (CNPq)
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [12/14534-4] Funding Source: FAPESP
The ecology of microbial communities associated with organic phosphorus (P) mineralization in soils is still understudied. Here, we assessed the abundance and diversity of bacteria harbouring genes encoding beta-propeller phytases (BPP) in the rhizosphere of traditional and transgenic maize cultivated in two Brazilian soils. We found a soil-dependent effect towards a higher abundance of phytase genes in the rhizosphere, and an absence of any impact of plant genotype. Phylogenetic analyses indicated members of the genera Pseudomonas, Caulobacter, Idiomarina and Maricaulis, close to uncultured bacteria', to constitute the dominant bacteria hosting this gene. The results obtained validate a methodology to target bacteria that are involved in the organic P cycle, and depict the responsiveness of such bacteria to the rhizosphere, albeit in dependency of the soil in which maize is cultivated. The data also identified the major bacterial groups that are associated with the organic P mineralization function.
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