Advances in Research and Application of Rice Bacterial Blight Resistance Genes
Rice is one of the most important food crops.Rice bacterial blight caused by Xanthomonas oryzae pv.oryzae(Xoo)is one of the oldest and most serious bacterial diseases that endangers the safe production of rice.The Xoo,which has the characteristics of strong mutability,rapid spread and wide distribution.It is an effective way to control bacterial blight by discovering and identifying resistance genes and breeding resistant varieties with them.Up to now,49 resistance genes related to rice bacterial blight have been identified,among which 42 resistance genes have been located,including 28 dominant genes and 14 recessive genes.17 resistance genes have been successfully cloned.The expression of resistance genes or interactions between resistance genes and proteins expressed by pathogen is the key to induce resistance.In this paper,the research and breeding application progress of rice bacterial blight resistance genes were reviewed and prospects.The aim of this paper is to provide valuable information for the further study and molecular breeding of rice bacterial blight.
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