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Abstract Detail


Systematics Section / ASPT

Biteau, Christophe [1], Pasquet, Rémy [2], Ainouche, Malika L. [3], Misset, Marie-thérèse [4], Ainouche, Abdelkader [5].

Genome size evolution in Lupinus.

GENOME size variation is examined by flow cytometry in Mediterranean and African lupines. Consistent variation with a magnitude of 2.5 fold is encountered among taxa with either different or the same chromosome number. Interestingly, such amount of DNA variation is associated with ecological differentiation and species divergence, which raises the question of the nature and adaptive and evolutionary consequences of DNA accumulation or loss in lupines. The results are examined in light of lupine phylogeny based upon combined ITS and ETS nrDNA data, with special interest in closely related African endemic species occurring in contrasting habitats.[c.e.:srb]


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1 - UMR-CNRS Ecobio, Ecologie Evolutive, Université de Rennes-1, Campus scientifique de Beaulieu, Bât. 14A, Rennes, 35042, FRANCE
2 - Iinternational Centre of Insect Physiology and Ecology, Institut Recherche Développement, PO Box 30772, Nairobi, , Kenya
3 - University of Rennes 1 UMR CNRS 6553, Evolutionary Ecology - Genome Evolution and Speciation Lab., Bat 14A Campus de Beaulieu, Rennes, 35 042 Cedex, France
4 - 1969 Loring Ave., San Diego, California, 92109-1406
5 - Umr-Cnrs 6553, Avenue Du Général Leclerc, Campus S, Rennes, F-35042, France

Keywords:
Lupinus
phylogeny
genome size.

Presentation Type: Poster:Posters for Sections
Session: 48-172
Location: Auditorium/Bell Memorial Union
Date: Tuesday, August 1st, 2006
Time: 12:30 PM
Abstract ID:447


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