A NEWLY ISOLATED HETEROTROPHIC BACTERIUM, XANTHOMONAS SP DY44, TO OXIDIZE HYDROGEN-SULFIDE TO POLYSULFIDE

被引：9

作者：

CHO, K ^{[1
]}

KUNIYOSHI, I ^{[1
]}

HIRAI, M ^{[1
]}

SHODA, M ^{[1
]}

机构：

[1] TOKYO INST TECHNOL,RESOURCES UTILIZAT RES LAB,4259 NAGATSUTA,MIDORI KU,YOKOHAMA,KANAGAWA 227,JAPAN

来源：

BIOTECHNOLOGY LETTERS | 1991年 / 13卷 / 12期

关键词：

D O I：

10.1007/BF01022100

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

A newly isolated heterotrophic bacterium, Xanthomonas sp. DY44, was found to be capable of oxidizing hydrogen sulfide (H2S). Cells made non-viable by heat treatment (120-degrees-C, 20 min) did not show H2S oxidation. However, both cells sterilized by gamma-rays irradiation and cell-free extract oxidized H2S, suggesting the existence of the heat-labile intracellular enzymatic system for H2S oxidation. As Xanthomonas sp. DY44 exhibited no autotrophic growth with H2S in basal mineral medium, the H2S oxidation was judged not to be a consequence of chemolithotrophic activity. Using X-rays photoelectron spectroscopy (XPS), the metabolic product of H2S oxidation was assessed to be polysulfide.

引用

页码：923 / 928

页数：6

共 17 条

[1] OBSERVATIONS ON BIOLOGY OF THIOTHRIX [J].