【摘要】 Wolbachia是存在于多种昆虫生殖器官的一类共生菌，它可通过在宿主群体中引起细胞质不亲和性而给宿主带来生殖优势．对灰飞虱体内的Wolbachia进行研究，发现室内饲养的灰飞虱的Wolbackia传递率为100％，而野外飞虱的Wolbachia传递率较低，这可解释自然群体中Wolbachia感染的多态性现象．同时，Wolbachia感染可提高宿主的生殖力，这对阐明Wolbachia与宿主的共进化具有重要意义．另外，所研究的Wolbachia品系强烈导致细胞质不亲和性．确定了这3个影响Wolbachia感染的主要因素，认为可利用Wolbachia带动其他类型转基因共生菌在自然界中扩散，从而解决外源基因如何在自然群体中迅速占优势这一重要问题．更多还原

【Abstract】 Bacteria in the genus Wolbachia are endosymbionts found in the reproductive tissues of insects accross a wide taxonomic spectrum. They cause cytoplasmic incompatibility between strains and related species in their hosts, thus impart a reproductive advantage for them. We studied Wolbachia in the Small Brown Planthoppers and found that Wolbachia transmission rate in the cloutes bred in lab was nearly 100%, while it was a bit lower in fieldcollected ones. This is possibly one of the reasons why there remains a polymorphism of Wolbachia infection in the nature. We also found that Wolbachia had positive effect on host fecundity, which is of great significance for us to make clear the evolutionary biology of Wolbachia. Our experiment also showed that the Wolbachia strain under investigation caused high level of cytoplasmic incompatibility. These three major factors that affect population biology of Wolbachia will help us establish a system to drive other maternally inherited symbionts into wild population, thus the useful genes transformed into the symbionts can be spread among the host populations.更多还原