湖北省水稻条纹叶枯病的发生与检测

Occurrence and Detection of Rice Stripe Virus in Hubei Province

由灰飞虱(Laodelphax striatellus)持久传播的水稻条纹病毒(RSV)引起的水稻条纹叶枯病在我国长江中下游粳稻种植区造成严重的损失。2011年,在湖北省孝感市一种植粳稻品种嘉优2号的田块中发现约10%的植株呈现典型的水稻条纹叶枯病症状,分子检测证实发病植株病原物为RSV,PCR产物TA克隆并测序进一步证实了发病植株病原物为RSV。灰飞虱能在湖北省越冬,并能传播水稻条纹叶枯病,因此,RSV对该区的粳稻种植存在潜在的威胁,应及早采取应对措施。

Rice stripe disease,caused by Rice stripe virus（RSV） and transmitted by the small brown plant hopper（Laodelphax striatellus）,has caused serious yield loss of japonica rice in the middle and lower reaches of Yangtze River.In 2011,10% of the plants were found infected by rice stripe virus in a rice field that planted japonica Jiayou2 in Xiaogan,Hubei province.RT-PCR was carried out for detection by specific primers,and PCR products were sequenced,confirming that the disease was indeed caused by RSV.It has appropriate conditions for the occurrence of rice stripe disease in Hubei Province,indicating that RSV is a potential threat for japonica rice cultivation in this area,and it is necessary to adopt preventive measures timely.