Molecular mechanism of transcription factors regulating rice blast resistance
作者单位：State Key Laboratory of Discovery and Utilization of Crop Genetic Resources in Southwest China (In preparation)State Key Laboratory of Hybrid RiceKey Laboratory of Major Crop Diseases & Collaborative Innovation Center for Hybrid Rice in Yangtze River BasinState Key Laboratory of Hybrid RiceHunan Hybrid Rice Research CenterRice Research InstituteSichuan Agricultural University at Wenjiang
会议名称：《中国植物病理学会2019年学术年会》
会议日期：2019年
学科分类：09[农学] 0904[农学-植物保护] 090401[农学-植物病理学] 090402[农学-农业昆虫与害虫防治]
关 键 词：Transcription factor Resistance Broad-spectrum Magnaporthe oryzae Rice
摘 要：Rice blast is the most devastating disease of *** effectively control this disease,it is necessary to elucidate molecular functions of resistance-related *** have compared the transcriptomic profile between the durably resistant rice variety Digu and the susceptible rice variety Lijiangxintuanheigu in response to infection by Magnaporthe oryzae,prior to full development of the *** identified 37 transcription factors(TFs) which regulate the blast response in the durably resistant rice Digu before the full maturation of the appressorium of ***,we found that many biological processes were specifically activated in Digu shortly after infection,such as extracellular recognition,biosynthesis of antioxidants,terpenes and *** results above indicated that contact and perception were present before the full maturation of the appressorium in the interaction of *** also identified a natural allele of bsr-dl that confers broad-spectrum resistance to blast ***,this allele causes a single nucleotide change in the promoter of the Bsr-dl gene,resulting in reduced expression of this gene due to the enhanced binding by its repressive TF MYBS1 and,consequently,an inhibition of H O degradation and enhanced disease ***,our studies advance and deepen understanding of blast disease resistance.