title: Screening of carbon dioxide-requiring extreme oligotrophs from soil.
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.
authors.affiliation: Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma 630-0192, Japan. yoshidan@bs.naist.jp
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Yoshida
authors.forename: Naoko
authors.initials: N
authors.lastname: Ohhata
authors.forename: Yumi
authors.initials: Y
authors.lastname: Yoshino
authors.forename: Tohoru
authors.initials: T
authors.lastname: Katsuragi
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Tani
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Takagi
mesh_terms: D015373:Bacterial Typing Techniques; D001483:Base Sequence; D002245:Carbon Dioxide / Q000378:metabolism*; D003470:Culture Media; D004269:DNA, Bacterial / Q000032:analysis; D004275:DNA, Ribosomal / Q000032:analysis; D008969:Molecular Sequence Data; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012988:Soil Microbiology; D013302:Streptomyces / Q000235:genetics / Q000302:isolation & purification* / Q000378:metabolism*
chemical_list: D003470:Culture Media; D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D012336:RNA, Ribosomal, 16S; D002245:Carbon Dioxide