›› 2012, Vol. 55 ›› Issue (9): 1103-1108.doi:

• 综述 • 上一篇    下一篇

昆虫共生细菌Rickettsia的研究进展

潘慧鹏,张友军   

  1. (中国农业科学院蔬菜花卉研究所,北京 100081)
  • 收稿日期:2012-07-08 修回日期:2012-09-11 出版日期:2012-09-20 发布日期:2012-09-20
  • 通讯作者: 张友军 E-mail:zhangyj@mail.caas.net.cn
  • 作者简介:潘慧鹏, 男, 1984年6月生, 山东菏泽人, 博士, 从事入侵生物学研究, E-mail: hppan0623@sina.com

Progress in the insect symbiont Rickettsia

PAN Hui-Peng, ZHANG You-Jun   

  1. (Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China)
  • Received:2012-07-08 Revised:2012-09-11 Online:2012-09-20 Published:2012-09-20
  • Contact: ZHANG You-Jun E-mail:zhangyj@mail.caas.net.cn
  • About author:hppan0623@sina.com

摘要: Rickettsia是传播和引起人类与其他脊椎动物疾病的胞内共生菌。引起脊椎动物疾病的这些Rickettsia, 其部分生活史是在节肢动物体内完成的;而另外许多Rickettsia, 其整个生活史都是在宿主节肢动物体内完成。为了叙述方便, 把前者称为脊椎动物Rickettsia, 后者称为节肢动物Rickettsia。过去的研究主要集中在医学上具有重大意义的脊椎动物Rickettsia, 而关于节肢动物Rickettsia的生物学特性等研究则相对较少。近年来, 研究者们加大了对昆虫Rickettsia的研究, 发现昆虫Rickettsia广泛分布于昆虫中, 且有两种存在形式。其可以通过垂直卵传的方式在世代间传递, 也可以通过寄生蜂和寄主植物达到在昆虫之间传播的目的。昆虫Rickettsia可通过诱导孤雌生殖、 诱导杀雄等方式影响宿主的生殖行为。其对不同宿主昆虫可产生对宿主有利或有害的作用;可增强宿主昆虫抵御高温和寄生蜂的能力, 与宿主昆虫对药剂的敏感性相关。最后, 昆虫Rickettsia具有一个简化的基因组, 且存在进一步减小的可能性。

关键词: 立克次体属, 昆虫, 胞内共生菌, 分布, 传播, 功能, 基因组

Abstract: Rickettsia species are intracellular symbionts of eukaryotes that are well known for infecting and causing serious diseases in humans and other vertebrates. All known vertebrate associated Rickettsia bacteria are vectored by arthropods as part of their life-cycle, and many other Rickettsia species are found exclusively in arthropods without any secondary host. For convenience, we refer to the former as vertebrateRickettsia  and the latter as arthropod Rickettsia. Previous research efforts mainly focused on medically important vertebrate Rickettsia. The biological studies of arthropod Rickettsia were limited. In recent years, more efforts have been made on the insect symbiont Rickettsia and considerable achievements have been obtained. The insect symbiont Rickettsia   is distributed among insects, and two different localization patterns exist in the same insect species. It can transmit vertically through eggs, and horizontally through parasitic wasps and host plants. It can influence the host reproduction by male-killing and parthenogenesis. It has beneficial or detrimental effects on its hosts and can increase the tolerance of its hosts to high temperature and parasitic wasps, and is correlated with its hosts’ susceptibility to insecticides. The insect symbiont   Rickettsia has a reduced genome and might undergo considerable further reduction.

Key words: Rickettsia, insect, intracellular symbiont, distribution, transmission, function, genome