Abstract
A culture-independent molecular phylogenetic analysis was carried out to study for the first time the diversity of bacterial ammonia monooxygenase subunit A (amoA) and nitrogenase reductase subunit H (nifH) genes from Urca inlet at Guanabara Bay in Rio de Janeiro, Brazil. Most bacterial amoA and nifH sequences exhibited identities of less than 95% to those in the GenBank database revealing that novel ammonia-oxidizing bacteria and nitrogen-fixing microorganisms may exist in this tropical marine environment. The observation of a large number of clones related to uncultured bacteria also indicates the necessity to describe these microorganisms and to develop new cultivation methodologies.
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Acknowledgments
We thank Luciana Andrade for discussion. The research was supported by Fundação Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro (FAPERJ) and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq). This study was conducted on the frame of Microbial Observatory of Rio de Janeiro—MORio.
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Gonzalez, A.M., Vieira, R.P., Cardoso, A.M. et al. Diversity of bacterial communities related to the nitrogen cycle in a coastal tropical bay. Mol Biol Rep 39, 3401–3407 (2012). https://doi.org/10.1007/s11033-011-1111-9
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DOI: https://doi.org/10.1007/s11033-011-1111-9