期刊
CELLULAR AND MOLECULAR LIFE SCIENCES
卷 68, 期 8, 页码 1327-1339出版社
SPRINGER BASEL AG
DOI: 10.1007/s00018-011-0650-5
关键词
Nitrogen-fixing mutualism; Host defense; Reactive oxygen species; Type III secretion system; Type IV secretion system; BacA protein
资金
- Special Coordination Fund for Promoting Science and Technology
- Ministry of Education, Culture, Sports, Science and Technology of Japan [17018041]
- Grants-in-Aid for Scientific Research [17018041] Funding Source: KAKEN
The establishment and maintenance of rhizobium-legume symbioses require a sequence of highly regulated and coordinated events between the organisms. Although the interaction is mutually beneficial under nitrogen-limited conditions, it can resemble a pathogenic infection at some stages. Some host legumes mount defense reactions, including the production of reactive oxygen species (ROS) and defensin-like antimicrobial compounds. To subvert these host defenses, the infecting rhizobial cells can use measures to passively protect themselves and actively modulate host functions. This review first describes the establishment and maintenance of active nodules, as well as the external and endogenous attack and threat stages. Next, recent studies of ROS scavenging enzymes, the BacA protein originally found in Sinorhizobium meliloti, and the type III/IV secretion systems are discussed, with a focus on two legume-rhizobium model systems.
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