Research Status and Prospect on the Interaction Between Magnaporthe oryzae Effector Protein and Rice

• Published in: Guangdong nong ye ke xue Vol. 50; no. 12; pp. 52 - 61
• Main Authors: Haoxiang WU, Zhanhua LU, Zhiqiang FANG, Hao CHEN, Shiguang WANG, Xiaofei WANG, Wei LIU, Xiuying HE
• Format: Journal Article
• Language: English
• Published: Guangdong Academy of Agricultural Sciences 01.12.2023
• Subjects: effector protein; interaction; magnaporthe oryzae; molecular mechanism; rice
• ISSN: 1004-874X
• DOI: 10.16768/j.issn.1004-874X.2023.12.005

Rice is one of the most important crops in the world, and safe production of rice is related to food safety issues. Rice blast, caused by Magnaporthe oryzae, is a worldwide fungal disease that causes serious losses to rice production. Compared with chemical pesticides control, the breeding and application of disease-resistant cultivars is the most economical and effective way to control the disease. However, the complex and diverse population of blast fungus in the field, excessive use of chemical pesticides, change of temperature environment and other factors cause rapid evolution of M. oryzae isolates, and the resistance of cultivars can only last for 3-5 years. Magnaporthe oryzae generates new races through the mutation of avirulent genes, which can escape or suppress the immune system of rice, causing infection and disease. At present, 26 avirulent genes in blast fungus have been identified, and 14 of them have been cloned, which plays an important role in the infection and colonization of pathogens and in interfering with the immune response of host plants. Further studies on the interaction mechanism of M. oryzae effector protein and rice resistance protein have also been conducted. Understanding the pathogenic mechanism of blast fungus and molecular mechanism of its interaction with rice will help to better understand the pathway of pathogens and the immune response of plant disease resistance genes, to formulate more efficient and green control measures. This review summarized the process of M. oryzae effector protein translocation and secretion in rice cells, the research advances in the interaction between effector proteins and disease-resistance proteins and the regional distribution of effector proteins. And the opportunities and challenges in current researches were discussed and prospected, with an aim to provide references for the molecular mechanism of the interaction between rice and blast fungus, disease-resistance breeding and disease prevention and control strategies.