期刊
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
卷 67, 期 11, 页码 4975-4983出版社
AMER SOC MICROBIOLOGY
DOI: 10.1128/AEM.67.11.4975-4983.2001
关键词
-
资金
- NIAID NIH HHS [AI46600] Funding Source: Medline
Recent studies suggest that bacterial abundance and species diversity in the ocean's water column are variable at the millimeter scale, apparently in response to the small-scale heterogeneity in the distribution of organic matter. We hypothesized that bacterium-bacterium antagonistic interactions may contribute to variations in community structure at the microscale. We examined each of the 86 isolates for their inhibition of growth of the remaining 85 isolates by the Burkholder agar diffusion assay. More than one-half of the isolates expressed antagonistic activity, and this trait was more common with particle-associated bacteria than with free-living bacteria. This was exemplified by members of the cz subclass of the class Proteobacteria (alpha -proteobacteria), in which production of antagonistic molecules was dominated by attached bacteria. We found that gamma -proteobacteria (members of the orders Alteromonadales and Vibrionales) are the most prolific producers of inhibitory materials and also the most resilient to them, while members of the Bacteriodetes were the organisms that were least productive and most sensitive to antagonistic interactions. Widespread interspecies growth inhibition is consistent with the role of this phenomenon in structuring bacterial communities at the microscale. Furthermore, our results suggest that bacteria from pelagic marine particles may be an underutilized source of novel antibiotics.
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