Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: The soybean-Phytophthora resistance locus Rps1-k encompasses coiled coil-nucleotide binding-leucine rich repeat-like genes and repetitive sequences | BMC Plant Biology BioMed Central Research article Open Access The soybean-Phytophthora resistance locus Rpsl-k encompasses coiled coil-nucleotide binding-leucine rich repeat-like genes and repetitive sequences Hongyu Gao and Madan K Bhattacharyya Address Department of Agronomy Interdepartmental Genetics Iowa State University Ames Iowa 50011 USA Email Hongyu Gao - gaohy@ Madan K Bhattacharyya - mbhattac@ Corresponding author Published 19 March 2008 Received 23 July 2007 BMC Plant Biology 2008 8 29 doi 1471-2229-8-29 Accepted 19 March 2008 This article is available from http 1471-2229 8 29 2008 Gao and Bhattacharyya 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 A series of Rps resistance to Pytophthora sojae genes have been protecting soybean from the root and stem rot disease caused by the Oomycete pathogen Phytophthora sojae. Five Rps genes were mapped to the Rpsl locus located near the 28 cM map position on molecular linkage group N of the composite genetic soybean map. Among these five genes Rpsl-k was introgressed from the cultivar Kingwa. Rpsl-k has been providing stable and broad-spectrum Phytophthora resistance in the major soybean-producing regions of the United States. Rpsl-k has been mapped and isolated. More than one functional Rpsl-k gene was identified from the Rpsl-k locus. The clustering feature at the Rpsl-k locus might have facilitated the expansion of Rpsl-k gene numbers and the generation of new recognition specificities. The Rpsl-k region was sequenced to understand the possible evolutionary steps that shaped the generation of Phytophthora resistance genes in soybean. Results Here the analyses of sequences of three overlapping BAC .
