tailieunhanh - báo cáo khoa học: " A recent duplication revisited: phylogenetic analysis reveals an ancestral duplication highly-conserved throughout the Oryza genus and beyond"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: A recent duplication revisited: phylogenetic analysis reveals an ancestral duplication highly-conserved throughout the Oryza genus and beyond | BMC Plant Biology BioMed Central Open Access Research article A recent duplication revisited phylogenetic analysis reveals an ancestral duplication highly-conserved throughout the Oryza genus and beyond Julie Jacquemin Michèle Laudié and Richard Cooke Address Laboratoire Génome et Développement des Plantes Unité mixte de recherche 5096 Centre national de la recherche scientifique Institut pour la recherche et le développement Université de Perpignan via Domitia 58 Av Paul Alduy 66860 Perpignan Cedex France Email Julie Jacquemin - Michèle Laudié - laudie@ Richard Cooke - cooke@ Corresponding author Published 10 December 2009 Received 9 July 2009 BMC Plant Biology 2009 9 146 doi 1471-2229-9-146 Accepted I0 December 2009 This article is available from http 1471-2229 9 146 2009 Jacquemin et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background The role of gene duplication in the structural and functional evolution of genomes has been well documented. Analysis of complete rice Oryza sativa genome sequences suggested an ancient whole genome duplication common to all the grasses some 50-70 million years ago and a more conserved segmental duplication between the distal regions of the short arms of chromosomes 11 and 12 whose evolutionary history is controversial. Results We have carried out a comparative analysis of this duplication within the wild species of the genus Oryza using a phylogenetic approach to specify its origin and evolutionary dynamics. Paralogous pairs were isolated for nine genes selected throughout the region in all Oryza genome types as well as in two outgroup species Leersia perrieri and Potamophila parviflora. .