从土壤中筛选需二氧化碳的极端寡营养菌。

Screening of carbon dioxide-requiring extreme oligotrophs from soil.

作者信息

Yoshida Nobuyuki, Ohhata Naoko, Yoshino Yumi, Katsuragi Tohoru, Tani Yoshiki, Takagi Hiroshi

机构信息

Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma 630-0192, Japan.

出版信息

Biosci Biotechnol Biochem. 2007 Nov;71(11):2830-2. doi: 10.1271/bbb.70042. Epub 2007 Nov 7.

DOI:10.1271/bbb.70042

PMID:17986768

Abstract

We screened soil samples for CO(2)-requiring extreme oligotrophs similar to Rhodococcus erythropolis N9T-4, which can grow on a basal salt agar medium without an organic carbon source. From 387 soil samples, three isolates were obtained and identified as Streptomyces spp. by 16S rDNA analysis. The isolates required gaseous CO(2) for growth and grew on a basal salt medium solidified by silica gel. These results suggest that such CO(2)-requiring oligotrophs occur widely in nature.

摘要

我们从土壤样本中筛选出了与红平红球菌N9T-4类似的需二氧化碳的极端寡营养菌，该菌可在无有机碳源的基础盐琼脂培养基上生长。从387份土壤样本中，获得了三株分离菌，并通过16S rDNA分析鉴定为链霉菌属。这些分离菌生长需要气态二氧化碳，且能在硅胶固化的基础盐培养基上生长。这些结果表明，此类需二氧化碳的寡营养菌在自然界中广泛存在。