期刊
BIOLOGICAL BULLETIN
卷 210, 期 2, 页码 73-77出版社
MARINE BIOLOGICAL LABORATORY
DOI: 10.2307/4134596
关键词
-
Heterotrophic bacteria are commonly found in close associations with photosynthetic cyanobacteria in aquatic ecosystems. Some of these associations can be species-specific and mutualistic, resulting in optimal growth and nitrogen-fixing potential for the cyanobacteria. A two-membered culture, consisting of a heterotrophic, epibiotic bacterium attached to an Anabaena sp. was studied in the work reported here. The epibiotic bacterium was grown in pare culture, and both organisms were identified on the basis of their 16S rRNA gene sequence. The specificity of the epibiont for the Anabaena sp. heterocysts was confirmed by re-association experiments. The epibiont is a member of the Alphaproteobacteria in the order Rhizobiales, with close relatives that include a group of aerobic anoxygenic photosynthetic marine isolates commonly associated with dinoflagellate phytoplankton. The close association of the epibiotic bacterium with its Anabaena host, and its phylogenic affiliation allude to the evolutionary history of association with photosynthetic organisms for a group of Rhizobia and warrant further investigation.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据