Bittencourt-Oliveira, Maria Do Carmo [UNESP]De Oliveira, Mariana CabralBolch, Christopher J. S.2014-05-272014-05-272001-11-13Journal of Phycology, v. 37, n. 5, p. 810-818, 2001.0022-3646http://hdl.handle.net/11449/66616The 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.810-818engcpcBA-IGSCyanobacteriaCyanophyceaeDNAGenetic diversityIntergenic spacerMicrocystisMicrocystis aeruginosaPhycocyaninPhylogenySystematicsalgal bloomBrazilDNA flanking regiongenetic diversitygenetic straingenetic variabilitygenotypeintergenic spacer regionmorphologynucleotide sequencephycocyanincyanobacteriumgenetic variationphylogenytaxonomyGenetic variability of Brazilian strains of the Microcystis aeruginosa complex (Cyanobacteria/Cyanophyceae) using the phycocyanin intergenic spacer and flanking regions (cpcBA)Artigo10.1046/j.1529-8817.2001.00102.xWOS:000171736300018Acesso restrito2-s2.0-0034749169