Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Comprehensive transcriptional profiling of NaCl-stressed Arabidopsis roots reveals novel classes of responsive genes | BMC Plant Biology BioMed Central Research article Open Access Comprehensive transcriptional profiling of NaCl-stressed Arabidopsis roots reveals novel classes of responsive genes Yuanqing Jiang and Michael K Deyholos Address Department of Biological Sciences University of Alberta Edmonton Canada Email Yuanqing Jiang - yuanqing@ Michael K Deyholos - deyholos@ Corresponding author Published 12 October 2006 Received 19 July 2006 BMC Plant Biology 2006 6 25 doi 1471-2229-6-25 Accepted 12 October 2006 This article is available from http 1471-2229 6 25 2006 Jiang and Deyholos 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 Roots are an attractive system for genomic and post-genomic studies of NaCl responses due to their primary importance to agriculture and because of their relative structural and biochemical simplicity. Excellent genomic resources have been established for the study of Arabidopsis roots however a comprehensive microarray analysis of the root transcriptome following NaCl exposure is required to further understand plant responses to abiotic stress and facilitate future systems-based analyses of the underlying regulatory networks. Results We used microarrays of 70-mer oligonucleotide probes representing 23 686 Arabidopsis genes to identify root transcripts that changed in relative abundance following 6 h 24 h or 48 h of hydroponic exposure to 150 mM NaCl. Enrichment analysis identified groups of structurally or functionally related genes whose members were statistically over-represented among up- or down-regulated transcripts. Our results are consistent with generally observed stress response themes and highlight potentially important roles for
