Comparison of seven homoeologous haplotypes (BAC) within the high polyploid sugarcane genome : [Abstract W604]

Sugarcane cultivars (Saccharum spp.) present one the most complex crop genomes studied to date: highly polyploids (more than decaploids) and aneuploids, with around 120 chromosomes and a genome size of around 10 Gb. In order to investigate the organisation of this highly polyploid genome (% of homology between allele haplotypes, content in repeated sequence...), which is essential for elaborating a whole genome sequencing strategy, we sequenced and compared seven hom(oe)ologous haplotypes (BAC clones) from the sugarcane cultivar R570. These haplotypes showed a very high colinearity as well as very high gene structure and sequence conservation. A high homology was also observed along the non-transcribed regions to the exception of transposable elements (TEs) which represents between 18 and 53% of the BAC sequence. A high colinearity was also observed in the overlapping regions between sugarcane and sorghum and to a lower extent with rice. (Texte intégral)

Bibliographic Details

Main Authors:	Charron, Carine, Garsmeur, Olivier, Jouffe, Vincent, Bocs, Stéphanie, Samain, Sylvie, Couloux, Arnaud, Droc, Gaëtan, Glaszmann, Jean-Christophe, Van Sluys, Marie-Anne, D'Hont, Angélique
Format:	conference_item biblioteca
Language:	eng
Published:	s.n.
Subjects:	F30 - Génétique et amélioration des plantes,
Online Access:	http://agritrop.cirad.fr/555740/ http://agritrop.cirad.fr/555740/1/document_555740.pdf
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