tailieunhanh - báo cáo khoa học: " Tissue culture-induced transpositional activity of mPing is correlated with cytosine methylation in rice"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Tissue culture-induced transpositional activity of mPing is correlated with cytosine methylation in rice | BMC Plant Biology BioMed Central Research article Tissue culture-induced transpositional activity of mPing is correlated with cytosine methylation in rice Frédéric Ngezahayo11 2 Chunming Xu11 Hongyan Wang1 Lily Jiang1 Jinsong Pang1 and Bao Liu 1 Open Access Address 1Key Laboratory of Molecular Epigenetics of MOE and Institute of Genetics and Cytology Northeast Normal University Changchun 130024 PR China and 2Ecole Normale Supérieure . 6983 Bujumbura Burundi Email Frédéric Ngezahayo - ngezafre@ ChunmingXu-xucm848@ HongyanWang-hongyan2003@ Lily Jiang - lily528081@ Jinsong Pang - pangjs542@ Bao Liu - baoliu@ Corresponding author tEqual contributors Published 15 July 2009 Received 27 December 2008 BMC Plant Biology 2009 9 91 doi 1471-2229-9-91 Accepted I5 July 2009 This article is available from http 1471-2229 9 91 2009 Ngezahayo 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 mPing is an endogenous MITE in the rice genome which is quiescent under normal conditions but can be induced towards mobilization under various stresses. The cellular mechanism responsible for modulating the activity of mPing remains unknown. Cytosine methylation is a major epigenetic modification in most eukaryotes and the primary function of which is to serve as a genome defense system including taming activity of transposable elements TEs . Given that tissue-culture is capable of inducing both methylation alteration and mPing transposition in certain rice genotypes it provides a tractable system to investigate the possible relationship between the two phenomena. Results mPing transposition and cytosine methylation alteration were .