title: Oligotrophic bacteria from rendzina forest soil.
abstract: Oligotrophic bacteria were shown to exist abundantly in all layers of a rendzina forest soil throughout the year. Two-hundred-three oligotrophic bacteria were isolated from forest soil (Aoba, Sendai) at different layers (L, F, H and A layers) throughout the year, and their morphological and physiological characteristics were examined. A high proportion (95%) of the isolated oligotrophs were Gram-negative, non-spore forming bacteria. Based on the cell shape, the isolates were divided into four groups: regular rods, curved/spiral bacteria, irregular rods, and buddin and/or prosthecate bacteria. Each group of bacteria is discussed in relation to the physiological characteristics. Notably oligotrophic bacteria of different cell types showed a marked zonal distribution in respect to profile depth.
authors.affiliation: Institute for Agricultural Research, Tohoku University, Sendai, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Whang
authors.forename: T
authors.initials: T
authors.lastname: Hattori
mesh_terms: D001419:Bacteria / Q000145:classification / Q000187:drug effects / Q000254:growth & development*; D003470:Culture Media; D006090:Gram-Negative Bacteria / Q000145:classification / Q000187:drug effects / Q000254:growth & development; D007564:Japan; D008461:Meat Products; D010461:Peptones / Q000494:pharmacology; D012965:Sodium Chloride / Q000494:pharmacology; D012988:Soil Microbiology
chemical_list: D003470:Culture Media; D010461:Peptones; D012965:Sodium Chloride