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Genetic diversity of N-fixing and plant growth-promoting bacterial community in different sugarcane genotypes, association habitat and phenological phase of the crop

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Abstract

This study aimed to evaluate the genetic diversity of bacterial community associated to different sugarcane genotypes, association habitat and phenological phase of the culture, as well as to isolate, to identify and to characterize your potential for plant growth-promoting. Root and rhizospheric soil samples from RB 92579 and RB 867515 varieties were collected at 120 and 300 days after regrowth (DAR). The diversity of bacterial was evaluated through of the 16S rRNA and nifH genes. We found greater genetic diversity in the root endophytic habitat at 120 DAR. We identify the genera Burkholderia sp., Pantoea sp., Erwinia sp., Stenotrophomonas sp., Enterobacter sp. and Pseudomonas sp. The genera Bacillus sp. and Dyella sp. were only identified in the variety RB 92579. We found indices above 50% for biological nitrogen fixation, production of indole acetic acid and phosphate solubilization, showing that the use of these bacteria in biotechnological products is very promising.

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Acknowledgements

Thanks to the Laboratory of Genetics and Microbial Biotechnology of the Federal University of the Agreste of Pernambuco (UFAPE), Federal Rural University of Pernambuco (UFRPE), University of São Paulo (USP), coordination and improvement of higher level personnel (CAPES), Foundation of protection of science and technology of the state of Pernambuco (FACEPE) and the National Councilor Scientific and Technological Development (CNPQ).

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All authors contributed to the study conception and design. All authors contributed too for material preparation, data collection and analysis. In addition, the authors read and approved the final manuscript.

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Correspondence to Fernando José Freire.

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The authors declare no conflicts of interest.

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Communicated by Erko Stackebrandt.

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de Lima, D.R.M., dos Santos, I.B., Oliveira, J.T.C. et al. Genetic diversity of N-fixing and plant growth-promoting bacterial community in different sugarcane genotypes, association habitat and phenological phase of the crop. Arch Microbiol 203, 1089–1105 (2021). https://doi.org/10.1007/s00203-020-02103-7

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  • DOI: https://doi.org/10.1007/s00203-020-02103-7

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