摘要
嗜线虫杆菌 (Xenorhabdusspp .)和发光杆菌 (Photorhabdusspp .)是与昆虫病原线虫互惠共生的细菌 ,Xenorhabdus和Pho torhabdus的一个显著特点是在共生菌体外培养期间出现细胞的型变 ,其型变的发生在几个方面不同于传统的型变。本文就近年来有关共生菌型变的生物学、遗传学等方面的研究进行了概述。
Both Xenorhabdus spp. and Photorhabdus spp. are symbionts of entomopathogenic nematodes and function as pathogenic agents toward susceptible insect larvae. They can be grown as free-living organisms under standard laboratory conditions. An intriguing property of Xenorhabdus spp. and Photorhabdus spp. is the formation of phenotypic variant forms that can be isolated at low and variable frequencies during prolonged incubation under stationary-phase conditions. The variant forms, or so called phase II cells, are altered in many properties and are not found as natural symbionts in the nematode. Phase I cells are the form of the bacteria that naturally associate with the infective juvenile nematode.
出处
《河北农业大学学报》
CAS
CSCD
北大核心
2003年第z1期187-190,共4页
Journal of Hebei Agricultural University
关键词
嗜线虫杆菌
发光杆菌
型变
Xenorhabdus
Photorhabdus
phase variation
