Heterocyte-forming cyanobacteria from Brazilian saline-alkaline lakes

Autor(es)

Genuario, Diego Bonaldo ; Dini Andreote, Ana Paula ; Marcal Vieira Vaz, Marcelo Gomes ; Fiore, Marli Fatima

• Tipo de documento: Artigo Científico
• Fonte: Molecular Phylogenetics and Evolution; v. 109, p. 105-112, APR 2017.
• Citações Web of Science: 14

Resumo

Studies investigating the diversity of cyanobacteria from tropical environments are scarce, especially those devoted to the isolation and molecular characterization of the isolated strains. Among the Brazilian biomes, Pantanal has mainly been examined through microscopic observation of environmental samples, resulting in lists of morphotypes without any genetic information. Recently, two studies were conducted evaluating the morphologic and genetic diversity of cultured non-heterocytous cyanobacteria in this biome, which resulted in the separation and description of two novel genera. In order to complement the diversity of cultured cyanobacteria from saline-alkaline lakes in Pantanal, the present study is dedicated to the examination of cultured nitrogen-fixing heterocytous cyanobacteria from this extreme and underexplored environment. A total of fourteen cyanobacterial strains were isolated. According to morphological examination they belong to the order Nostocales and to the subsections IV.I and IV.II, according to the International Code of Nomenclature for Algae, Fungi and Plants and the Bergey's Manual of Systematic Bacteriology, respectively. Phylogenetic evaluation of their 16S rRNA gene sequences resulted in the formation of five clusters. Among them, one is clearly related to the genus Anabaenopsis whilst the remaining clusters may represent new genetic lineages. These novel sequences aid in the delimitation of problematic groups, especially those containing sequences belonging to mixed genera. The application of both morphologic and phylogenetic studies has proven to be an important tool in resolving problematic groups in cyanobacteria systematics. This strategy is essential in order to detect novel cyanobacteria genera from other tropical environments. (C) 2016 Elsevier Inc. All rights reserved. (AU)

• Processo FAPESP: 10/00321-3 - Diversidade e atividade funcional de cianobactérias do Arquipélago Shetlands do Sul, Continente Antártico
• Beneficiário: Diego Bonaldo Genuário
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 13/50425-8 - Biodiversity of cyanobacteria and their bioactive compounds from under-explored Brazilian habitats
• Beneficiário: Marli de Fátima Fiore
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 10/18732-0 - Produtos naturais bioativos de cianobactérias marinhas
• Beneficiário: Marcelo Gomes Marçal Vieira Vaz
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 14/26131-7 - Análise do microbioma do Rio Amazonas e seus afluentes: biogeografia e sua contribuição na fixação do N2
• Beneficiário: Diego Bonaldo Genuário
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 09/15402-1 - Cianobactérias da filosfera da Mata Atlântica: isolamento, taxonomia e bioprospecção
• Beneficiário: Ana Paula Dini Andreote
• Modalidade de apoio: Bolsas no Brasil - Doutorado