Overexpression of OsOSM1 gene enhanced rice resistance to sheath blight caused by Rhizoctonia solani
作者单位：Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain CropsKey Laboratory of Plant Functional Genomics of the Ministry of EducationYangzhou University
会议名称：《江苏省遗传学会2016年学术年会》
会议日期：2016年
学科分类：0710[理学-生物学] 07[理学] 09[农学] 0904[农学-植物保护] 071007[理学-遗传学] 090401[农学-植物病理学] 0901[农学-作物学] 090402[农学-农业昆虫与害虫防治] 090102[农学-作物遗传育种]
关 键 词：Rice OsOSM1 gene expression sheath blight resistance agronomic traits
摘 要：Sheath blight（SB）,caused by Rhizoctonia solani,is one of the most destructive rice diseases *** has been difficult to generate SB resistant variety through conventional breeding because of typically quantitative nature of rice resistance to ***,we found that the gene Os12 g0569500（named OsOSM1）,belongs to TLP-PA subfamily,was strongly induced expression by *** in SB resistant variety *** the study,we identified five genes including OsOSM1 that showed high identity on amino acid ***,only OsOSM1 was found highly expressed at rice booting stage and in leaf sheath,which was correlated with SB serious development in *** of OsOSM1 was strongly induced by methyl jasmonate（MeJA） and reduced by JA biosynthesis inhibitor salicylhydroxamic acid（SHAM）,while was not apparently affected by ethephon（ET）,salicylic acid（SA） and kinetin（KT）.OsOSM1 was localized to plasma *** of OsOSM1 could significantly up-regulate the expression of pathogenesis-related genes and strongly enhanced rice resistance to ***,we did not found apparently alternation of OsOSM1 overexpression lines compared with the wild type on morphologies and grain *** together,our results demonstrate that OsOSM1 plays an important role in rice SB resistance and can be used in rice breeding toward SB resistance.