Comparative Expression Analysis of Twelve OsHsfs in Resistant and Susceptible Rice to Bacterial Blight
Heat stress transcription factors(Hsfs)are the central regulators of defense response.By whole genomic microarray analysis,seven up-regulated Hsfs(OsHsfA2a,OsHsfA2b,OsHsfB2a,OsHsfB2b,OsHsfB2c,OsHsfC1b and OsHsfC2c),two down-regulated ones(OsHsfA2c and OsHsfB4c)and three ones(OsHsfA1,OsHsfA2d and OsHsfB1)without significant change were screened out based on their expression levels in resistant variety SH5 at 6 h after inoculation of bacterial blight.The results of real-time PCR analysis showed that there were significant differences in expression changes of 11 OsHsfs between resistant variety SH5 and susceptible variety 8411 at least at one time point after inoculation.And the functions of OsHsfA2a,OsHsfA2c,OsHsfB2b and OsHsfB2c on bacterial blight resistance are worth further research.