Identification and analysis of polymorphisms in the promoter region of the gene DREB1A from contrasting haplotypes of Coffea canephora

The aim of the present study was to identify and analyze the polymorphisms within the promoter region of the gene DREB1A in two clones of C. canephora, clones 14 (drought tolerant) and 22 (drought susceptible), but also in other accessions of Coffea genus (C. eugenioides and C. arabica). This allowed the identification of cis-regulatory elements and also of polymorphisms in the promoter region of the gene DREB1A. For example, the presence of cis-regulatory elements from transcription factors belonging to ABA-dependent pathway suggested the possibility of cross-talk between the two networks (ABA-independent and -dependent) response upon the regulation process of the DREB1A gene. The polymorphisms permitted the identification of different haplotypes among those genotypes and the allelic distribution of these loci. These polymorphisms may indicate the involvement of different haplotypes in the genetic control of drought tolerance.

Bibliographic Details

Main Authors:	Alves, Gabriel Sergio Costa, Freire, Luciana Pereira, Vieira, Natalia Gomes, Marraccini, Pierre, Paiva, L.V., Andrade, Alan Carvalho
Format:	conference_item biblioteca
Language:	eng
Published:	ASIC
Subjects:	F30 - Génétique et amélioration des plantes, H50 - Troubles divers des plantes, F60 - Physiologie et biochimie végétale,
Online Access:	http://agritrop.cirad.fr/569402/ http://agritrop.cirad.fr/569402/1/document_569402.pdf
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