Publicação: Genetic variability of Brazilian strains of the Microcystis aeruginosa complex (Cyanobacteria/Cyanophyceae) using the phycocyanin intergenic spacer and flanking regions (cpcBA)
Carregando...
Data
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Tipo
Artigo
Direito de acesso
Acesso restrito
Resumo
The genetic and morphological variability among 15 Brazilian strains of Microcystis aeruginosa (Kütz.) Kütz. collected from four locations was examined and compared with several reference strains of M. aeruginosa, M. viridis (A. Br.) Lemm. and M. wesenbergii (Kom.) Kom. in Kondr. Brazilian strains were classified by morphological features and by comparison of the nucleotide sequences of the cpcBA intergenic spacer and flanking regions. Our results indicate that Brazilian strains classified as M. aeruginosa are phylogenetically diverse compared with reference strains of M. aeruginosa and that the current taxonomy underestimates genetic diversity within M. aeruginosa. The data also demonstrate that morphological criteria alone are inadequate to characterize Microcystis species. Although colonial characters were shown to vary considerably in culture, some genetic lineages demonstrated consistent cellular diameter ranges, indicating that cell size has value as a taxonomic character. The detection of six M. aeruginosa genotypes in a single water body indicates that morphological approaches can also seriously underestimate the diversity of Microcystis bloom populations.
Descrição
Palavras-chave
cpcBA-IGS, Cyanobacteria, Cyanophyceae, DNA, Genetic diversity, Intergenic spacer, Microcystis, Microcystis aeruginosa, Phycocyanin, Phylogeny, Systematics, algal bloom, Brazil, DNA flanking region, genetic diversity, genetic strain, genetic variability, genotype, intergenic spacer region, morphology, nucleotide sequence, phycocyanin, cyanobacterium, genetic variation, phylogeny, taxonomy
Idioma
Inglês
Como citar
Journal of Phycology, v. 37, n. 5, p. 810-818, 2001.
