| Full text | |
| Author(s): |
Marcal Vieira Vaz, Marcelo Gomes
;
Genuario, Diego Bonaldo
;
Dini Andreote, Ana Paula
;
Silva Malone, Camila Francieli
;
Sant'Anna, Celia Leite
;
Barbiero, Laurent
;
Fiore, Marli Fatima
Total Authors: 7
|
| Document type: | Journal article |
| Source: | INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY; v. 65, p. 11-pg., 2015-01-01. |
| Abstract | |
The genus Leptolyngbya Anagnostidis & Komarek (1988) was described from a set of strains identified as 'LW-group B'. The morphology within this group is not particularly informative and underestimates the group's genetic diversity. In the present study, two new pseudanabaenacean genera related to Leptolyngbya morphotypes, Pantanalinema gen. nov. and Alkalinema gen. nov., are described under the provisions of the International Code of Nomenclature for Algae, Fungi and Plants, based on a polyphasic approach. Pantanalinema gen. nov. (type species Pantanalinema rosaneae sp. nov.) has sheaths and trichomes with slight gliding motility, which distinguish this genus from Alkalinema gen. nov. (type species Alkalinema pantanalense sp. nov.), which possesses trichomes arranged in an ornate (interwoven) pattern. 16S rRNA gene sequences of strains of Pantanalinema and Alkalinema exhibited low identity to each other (<= 91.6%) and to other sequences from known pseudanabaenacean genera (<= 94.3 and 93.7 %, respectively). In a phylogenetic reconstruction, six sequences from strains of Pantanalinema and four from strains of Alkalinema formed two separate and robust clades (99 % bootstrap value), with the genera Oculatella and Phormidesmis, respectively, as the closest related groups. 16S-23S rRNA intergenic spacer sequences and secondary structures of strains of Pantanalinema and Alkalinema did not correspond to any previous descriptions. The strains of Pantanalinema and Alkalinema were able to survive and produce biomass at a range of pH (pH 4-11) and were also able to alter the culture medium to pH values ranging from pH 8.4 to 9.9. These data indicate that cyanobacterial communities in underexplored environments, such as the Pantanal wetlands, are promising sources of novel taxa. (AU) | |
| FAPESP's process: | 09/15402-1 - Cyanobacteria of the Atlantic Forest phyllosphere: isolation, taxonomy and bioprospecting |
| Grantee: | Ana Paula Dini Andreote |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 13/09192-0 - Saline lakes in the Pantanal of Nhecolândia: Hydro-bio-geochemistry of a singular wetland |
| Grantee: | Laurent BARBIERO |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 10/18732-0 - Bioactive natural products from marine cyanobacteria |
| Grantee: | Marcelo Gomes Marçal Vieira Vaz |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 10/00321-3 - Diversity and functional activity of cyanobacteria isolated from South Shetlands Archipelago, Antarctic Continent |
| Grantee: | Diego Bonaldo Genuário |
| Support Opportunities: | Scholarships in Brazil - Doctorate |