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Genetic diversity of Cylindrospermopsis strains (cyanobacteria) isolated from four continents
Muriel Gugger1, Renato Molica, Brigitte Le Berre
1INRA, UMR CARRTEL,BP 511, 74203 Thonon Cedex, France.
Abstract:
The genetic diversity of Cylindrospermopsis strains (cyanobacteria) was examined using mainly the 16S-23S internally transcribed spacer (ITS1) sequences. Strains were grouped in three clusters: (i) America, (ii) Europe, and (iii) Africa and Australia. These results suggested a recent spread of Cylindrospermopsis across the American and European continents from restricted warm refuge areas instead of exchanges between continents. On the other hand, they also suggested a recent colonization of Australia by African strains.
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