RRC ID 6457
Author Kawaura K, Mochida K, Ogihara Y.
Title Genome-wide analysis for identification of salt-responsive genes in common wheat.
Journal Funct. Integr. Genomics
Abstract To identify salt-responsive genes in wheat, global expression analysis of transcripts was carried out using oligo-DNA microarrays. Microarrays have been designed from approximately 32,000 unique wheat genes classified from a large number of expressed sequence tags (ESTs). Two-week-old seedlings of wheat were treated with 150 mM NaCl for 1, 6, and 24 h, and their roots and shoots were separately subjected to analyses. Consequently, 5,996 genes showed changes in expression of more than twofold and were classified into 12 groups according to correlations in expression patterns. These salt-responsive genes were assigned functions using the Gene Ontology (GO). Genes assigned to transcription factor, transcription-regulator activity, and DNA-binding functions were preferentially classified into early response groups. On the other hand, those assigned transferase and transporter activity were classified into late response groups. These data suggest that multiple signal transduction pathways in response to salinity exist in wheat. Transcription factors (TFs) which have been reported as participants in salt-tolerant pathway changed their expression levels in response to salt treatment. Among them, only a few TFs show high sequence homologies to genes in rice. These investigations suggest that salt-responsive genes identified by this study are candidates for salt-stress tolerance uniquely in wheat.
Volume 8(3)
Pages 277-86
Published 2008-8
DOI 10.1007/s10142-008-0076-9
PMID 18320247
MeSH Amino Acid Sequence DNA Probes DNA, Plant Gene Expression Profiling Gene Expression Regulation, Plant* Genome, Plant* Microarray Analysis Molecular Sequence Data Plant Roots / genetics Plant Shoots / genetics Protein Structure, Tertiary Seedlings / drug effects Sodium Chloride / pharmacology* Time Factors Transcription Factors / genetics Transcription Factors / metabolism Triticum / drug effects Triticum / genetics* Triticum / metabolism
IF 3.889
Times Cited 41
Wheat wheat0130Contig15334 MUGEST2003_23lib_Contig15343 wheat0130Contig9710 MUGEST2003_23lib_Contig11009 wheat0130Contig15821