Screening of Carbon Dioxide-Requiring Extreme Oligotrophs from Soil

Nobuyuki YOSHIDA; Naoko OHHATA; Yumi YOSHINO; Tohoru KATSURAGI; Yoshiki TANI; Hiroshi TAKAGI

doi:10.1271/bbb.70042

Microbiology & Fermentation Technology Notes

Screening of Carbon Dioxide-Requiring Extreme Oligotrophs from Soil

Nobuyuki YOSHIDA, Naoko OHHATA, Yumi YOSHINO, Tohoru KATSURAGI, Yoshiki TANI, Hiroshi TAKAGI

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Keywords: carbon dioxide-requiring bacteria, oligotroph, Streptomyces, silica gel plate

JOURNAL FREE ACCESS

2007 Volume 71 Issue 11 Pages 2830-2832

DOI https://doi.org/10.1271/bbb.70042

View "Advance Publication" version (November 7, 2007).

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Abstract

We screened soil samples for CO₂-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 CO₂ for growth and grew on a basal salt medium solidified by silica gel. These results suggest that such CO₂-requiring oligotrophs occur widely in nature.

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