Phylogeny of Microcystins: Evidence of a Biogeographical Trend?

• Tipo: Artigo em Revista Científica Internacional
• Data: 2013

Autores

Cristiana Moreira (Autor) Outra; Vitor Vasconcelos (Autor) FCUP; Agostinho Antunes (Autor) FCUP

Revista

Título: Current Microbiology

Vol. 66

Páginas: 214-221

ISSN: 0343-8651

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 12 Citações

Scopus - 17 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Ciências biológicas

Outras Informações

ID Authenticus: P-002-08Y

DOI: 10.1007/s00284-012-0258-5

Abstract (EN): Microcystins, the most prevalent cyanotoxins occurring worldwide, were first recorded in the species Microcystis aeruginosa. Its production has been reported in all continents; thus, we propose a comprehensive phylogenetic study to characterize M. aeruginosa microcystin-producing strains and establish whether or not the species has an historic biogeography. To accomplish this, we compared phylogenetically the nucleotide sequences of three genes of the mcy gene cluster (mcyA, mcyD and mcyG) from toxin producing M. aeruginosa strains across all the five continents. The obtained results provided valuable insight on the biogeography of M. aeruginosa produced microcystins: (i) the Asian strains showed to be distinct from the other continental groups indicating a genetically unique population and (ii) Asian strains were more related to European and North American strains. Moreover, the evidence of positive selection was determined in all the three mcy genes indicating that some functionality yet to be determined could be under selection for these genes.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8