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Updated: May 31, 2026

Prospecting Microbial Strains for Bioremediation and Probiotics Development for Metaorganism Research and Preservation
Published on: October 31, 2019
Diversity of bacterial communities related to the nitrogen cycle in a coastal tropical bay
Alessandra M Gonzalez1, Ricardo P Vieira, Alexander M Cardoso
1Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941-590, Brazil.
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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