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Microbiological Studies on Shallow Marine Areas―VI Thiosulfate-oxidizing bacteria isolated from shallow bay

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タイトル: Microbiological Studies on Shallow Marine Areas―VI Thiosulfate-oxidizing bacteria isolated from shallow bay
その他のタイトル: 浅海域の微生物学的研究-6 : 内湾から分離したチオ硫酸酸化性細菌
著者: Fujita, Yuji / Zenitani, Buhei
著者(別表記) : 藤田, 雄二 / 銭谷, 武平
発行日: 1971年 8月
出版者: 長崎大学水産学部
引用: 長崎大学水産学部研究報告, v.31, pp.77-83; 1970
抄録: Twenty two strains of thiosulfate-oxidizing bacteria were isolated from sea water and bottom sediments of Omura Bay, west coast of Kyushu. The majority (73%) of the isolates highly utilized thiosulfate in the sea water organic media, and they were identified as thiobacilli group 0 by classification of HUTCHINSON et al. The test strains belonging to this group oxidized thiosulfate by constitutive or inductive enzyme system, and in the former cases, the growth of bacteria was stimulated by addition of thiosulfate. The others (27%) utilized thiosulfate only in the sea water inorganic media, though they grew in sea water organic media. In the previous paper, it was reported that every summer low concentration of hydrogen sulfide had been detected in the bottom layer of the bay indicating wide distribution of thiobacilli. The oxidation of hydrogen sulfide in sea water proceeds chemically to thiosulfate and sulfate. The former is said to be oxidized further by the bacteria. However, these marine bacteria have not been studied thoroughly. Recently, studies on thiobacilli in the marine environment have been reported by TILTON et al., and also by ADAIR & GUNDERSEN. Since their studies were based mainly on the utilization of thiosulfate in conjunction with the decrease of pH value in the culture, they did not isolate the ecologically important bacteria that utilize thiosulfate with the increase of pH value though the procedure itself was useful. On the other hand, they isolated some bacterial strains that required acidic pH value which could not exist in the natural sea water habitat. There are some problems which are yet to be solved. This study was made in an attempt to isolate from the bay the bacteria which have the ability to oxidize thiosulfate, and also to verify their characte ristics as well as to know the relation between the distribution and physiological activities in the bottom layer of the bay.
URI: http://hdl.handle.net/10069/31187
ISSN: 05471427
資料タイプ: Departmental Bulletin Paper
原稿種類: publisher

引用URI : http://hdl.handle.net/10069/31187



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