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Diversity of potential nitrogen-fixing bacteria from rhizosphere of the Coffea arabica L. and Coffea canephora L.

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Abstract

Coffea arabica L. and Coffea canephora L. are coffee species most consumed and marketed in the world. The coffee crop requires a large amount of nitrogen, which shows the importance of knowledge of the population of nitrogen-fixing bacteria (NFB) from the rhizosphere of these crops. These microorganisms may help the reduction of nitrogen fertilizing. However, there is no production of NFB inoculum in the coffee. Therefore, our objective was to evaluate the diversity of potential nitrogen-fixing bacteria (PNFB) in the rhizosphere of C. arabica and C. canephora. The microbial DNA of the soil was extracted, amplified through PCR, and sequenced at the Illumina Miseq. platform. The PNFB prediction was performed using the program PICRUSt2. Three hundred and thirty-seven amplicon sequence variants (ASVs) were identified as PNFB in two coffee species. Xanthobacteraceae, Rhizobium multhospitiium, Rhizobium mesosinicum, and Bradyrhizobium sp. were detected in all samples and main components of the core microbiota of the coffee plant rhizosphere. Some ASVs are exclusive from one of the coffee farms, showing that the coffee specie cultivated may influence the PNFB communities. However, edaphoclimatic factors and soil chemical attributes can also influence the distribution of ASVs in coffee soil. In the C. canephora, the PNFB diversity was influenced by the altitude and the soil chemical attributes, while the altitude and the phosphorus content influenced the PNFB population in C. arabica. Our results are important to the understanding of the PNFB dynamic in coffee soil and for the agricultural inputs bioprospecting to coffee.

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The authors declare the data availability from the article for interested persons. All authors authorized the submission and publication of the paper.

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Acknowledgements

The authors would like to thank the Sul Serrana of Espírito Santo Free Admission Credit Cooperative—Sicoob (23186000886201801), the Coordination of Superior Level Staff Improvement—CAPES, the National Council for Scientific and Technological Development (CNPq), the IFES for supporting the research (PRPPG n°. 12/2021), Incaper, Embrapa, Fapemig, and Fapes.

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Conceptualization, validation, investigation, writing, formal analysis: VBB, KMSM, TGRV, JMRL, LLP, and MCSS. Data processing and analysis: KMSM, TGRV, JMRL, LLP, and MCSS. The investigation, writing—review and editing: VBB, KMSM, TGRV, JMRL, LFC, LLP, and MCSS.

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Correspondence to Marliane de Cássia Soares da Silva.

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The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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Bullergahn, V.B., Menezes, K.M.S., Veloso, T.G.R. et al. Diversity of potential nitrogen-fixing bacteria from rhizosphere of the Coffea arabica L. and Coffea canephora L.. 3 Biotech 14, 27 (2024). https://doi.org/10.1007/s13205-023-03875-7

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  • DOI: https://doi.org/10.1007/s13205-023-03875-7

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