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Applied and Environmental Microbiology, February 2005, p. 1097-1100, Vol. 71, No. 2
0099-2240/05/$08.00+0 doi:10.1128/AEM.71.2.1097-1100.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.
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Renato Molica,1,3,
Brigitte Le Berre,1
Philippe Dufour,4
Cécile Bernard,2 and
Jean-François Humbert1*
INRA,1 IRD UR098-INRA, UMR CARRTEL, Thonon,4 MNHN, Unité Ecosystèmes et Interactions Toxiques (USM0505), Paris, France,2 Instituto Tecnologico do Estado de Pernambuco, Recife, Brazil3
Received 12 March 2004/ Accepted 18 September 2004
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.
FOOTNOTES
This work is a contribution of the French Institute for Research and Development (IRD/UR098).
M. Gugger and R. Molica contributed equally to this work.
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