Advances of Molecular Biology Researches on Rice Bacterial Blight Disease Resistance Gene Xa21

Abstract

Abstract: The bacterial blight of rice caused by Xanthomonas oryzae pv. oryzae(Xoo)is one of the most destructive diseases in the world. Up to now, 7 bacterial blight resistance genes have been cloned. Xa21 is the first bacterial blight disease resistance gene cloned from rice and it has drawn great attention because of its broad spectrum resistance against Xoo. This paper briefly reviewed the discovery, mapping, cloning, expression properties of Xa21, biochemical properties, action and regulation of XA21 and XA21-mediated immunity. Future perspective on Xa21-related research were also discussed.

Key words: Rice, Bacterial blight, Resistance gene, Xa21

Chen Xiaolin, Yan Qun, Gao Lijun, Gao Hanliang. Advances of Molecular Biology Researches on Rice Bacterial Blight Disease Resistance Gene Xa21[J]. Biotechnology Bulletin, 2014, 0(1): 8-14.

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