INBIOTEC   24408
INSTITUTO DE INVESTIGACIONES EN BIODIVERSIDAD Y BIOTECNOLOGIA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
A polyphasic approach for the taxonomic description of two native bloom-forming cyanobacteria
Autor/es:
A. AGUILERA; R. ECHENIQUE; E. BERRENDERO ; J. KASTOVSKY; G.L. SALERNO ET AL.
Lugar:
Córdoba
Reunión:
Congreso; XI Congreso Argentino de Microbiología General SAMIGE; 2015
Resumen:
Raphidiopsis mediterranea and Cylindrospermopsis raciborskii, both planktonic, freshwaterbloom-forming cyanobacteria, are of great concern because they can produce potent?cyanotoxins. Although these species are morphologicallysimilar, the presence or absence of heterocysts (in C. raciborskii orR. mediterranea, respectively) is the only character that has been usedto distinguish between them. Importantly, this has led to misidentificationsand to question the validity of the genus Raphidiopsis.In this work, studies of morphological variations innature were combined with ecophysiological and molecular analyses elucidate thetaxonomic classification of two strains of R.mediterranea native from shallow lakes of the Buenos Aires province. Thestrains, studied/monitored in field for two years, were isolated, grown in MLA medium, and analyzed for their morphologicaltraits by light and transmission electron microscopy. Molecularanalyses were basedon the sequences of 16S rRNA genes and 16S-23Sinternally transcribed spacers (ITS).