水稻抗褐飞虱基因研究进展

Research Progress of Brown Planthopper Resistance Genes in Rice

综述了水稻抗褐飞虱基因的研究进展。褐飞虱是对水稻为害最严重的害虫之一。它栖息于稻丛基部,吸食韧皮部汁液。褐飞虱具有不同的生物型。在抗性品种的选择压力下,将产生一种新的生物型褐飞虱群体克服该抗性品种。因此,寻找新的抗性基因是培育新的抗褐飞虱水稻品种的关键。合适的水稻抗褐飞虱的鉴定方法是克隆水稻抗褐飞虱基因的基础。常用的方法有苗期集团鉴定、蜜露量测定、电子取食监测系统等。迄今为止,科学家已经在栽培稻和野生稻中定位了21个水稻抗褐飞虱基因,并且Bph14基因已经被武汉大学生命科学学院杂交水稻国家重点实验室成功克隆。该结果为克隆其他水稻抗褐飞虱基因以及研究水稻抗褐飞虱的分子机制奠定了基础。

The research progresses on brown planthopper（Nilaparvata lugens Stl,BPH） resistance genes in rice were summarized.BPH is one of the most destructive pests in crop production worldwide.They gather at the base part of rice plant and suck assimilates from the phloem.BPH has various biotypes.Under the selection pressure of resistant variety,a new biotype of BPH might come out to overcome the resistance of the variety.Exploring new resistance gene is critical for developing resistant rice variety.Appropriate evaluation of germplasm for BPH resistance is the key to identify resistance genes correctly.There are several types of screening methods such as the standard seedbox screening technique,honey dew test,electronic monitoring system and so on.To date,21 BPH-resistance genes have been identified from cultivated and wild rice species.Bph14 is the first report of BPH-resistance gene in rice.These results provide basis for the clone of more BPH resistance genes and the study on molecular mechanism of rice resistance to BPH.