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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Phylogenetic connection among close genera of Aphanizomenonaceae (Cyanobacteria): Amphiheterocytum gen. nov., Cylindrospermopsis and Sphaerospermopsis

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Author(s):
Sant'Anna, Celia L. [1] ; Gama, Watson A. [1] ; Rigonato, Janaina [2] ; Correa, Gilsineia [3] ; Mesquita, Marcella C. B. [3] ; Marinho, Marcelo Manzi [3]
Total Authors: 6
Affiliation:
[1] Inst Bot, Sao Paulo, SP - Brazil
[2] Univ Sao Paulo, Ctr Nucl Energy Agr, Piracicaba, SP - Brazil
[3] Univ Estado Rio De Janeiro, Lab Ecol & Physiol Phytoplankton, Rio De Janeiro - Brazil
Total Affiliations: 3
Document type: Journal article
Source: ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS; v. 37, p. 205-214, JAN 2019.
Web of Science Citations: 1
Abstract

Aphanizomenonaceae is a recently proposed family of Cyanobacteria encompassing 12 planktic genera. The formation and distribution of heterocytes and akinetes along the trichome are the main morphological characteristics of this family. In this context, Sphaerospermopsis and Cylindrospermopsis are close related genera both molecularly and morphologically differing by 1) rounded akinetes adjacent to the heterocytes disposed along the trichome in Sphaerospermopsis; 2) apical heterocytes and akinetes separated by a few cells (2-3) in Cylindrospermopsis. Recently, during a survey on cyanobacteria from tropical Brazilian eutrophic lakes, strains with similarities to Sphaerospermopsis and Cylindrospermopsis were isolated. Aiming to elucidate the phylogenetic placement of these strains, we performed morphological, physiological and molecular studies. The Brazilian strains were confirmed to be closely related to Sphaerospermopsis and Cylindrospermopsis, but the phylogeny, based on 16S rRNA gene and 16S-23S rRNA intergenic region, clustered them in a well-defined clade separate from these genera. According to these results, we detailed the morphology, physiology, and phylogeny of the proposed new genus Amphiheterocytum, which showed potential to create blooms in tropical shallow lakes. (AU)

FAPESP's process: 12/16430-1 - Molecular and phenotypic characterization of genera from the families Synechococcaceae and Chroococcaceae (cyanobacteria) of terrestrial habitats from Mata Atlântica, SP, Brazil
Grantee:Watson Arantes Gama Júnior
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 12/06850-3 - Metagenomics and polyphasic analysis from paulista coast cyanobacterial community
Grantee:Janaina Rigonato
Support Opportunities: Regular Research Grants