Degradation characteristics of microcystins by isolated bacteria from Lake Kasumigaura

被引：61

作者：

Saitou, T

Sugiura, N

Itayama, T

Inamori, Y

Matsumura, M

机构：

[1] Univ Tsukuba, Inst Agr & Forest Engn, Tsukuba, Ibaraki 3050006, Japan

[2] Mitsubishi Heavy Ind Co Ltd, Adv Technol Res Ctr, Kanawa Ku, Yokohama, Kanagawa 2368515, Japan

[3] Natl Inst Environm Studies, Tsukuba, Ibaraki 3050053, Japan

[4] Univ Tsukuba, Inst Appl Biochem, Tsukuba, Ibaraki 3050006, Japan

来源：

JOURNAL OF WATER SUPPLY RESEARCH AND TECHNOLOGY-AQUA | 2003年 / 52卷 / 01期

关键词：

16 s rRNA; microcystin; Sphingomonas;

D O I：

10.2166/aqua.2003.0002

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A microcystin degradative bacteria was isolated from natural lakes and its phylogenetic position was confirmed. The 16 s rRNA of the bacteria exhibited 98.5% homology with the 16 s rRNA of Sphingomonas stygia belonging to the alpha subdivision on proteobacteria. The bacteria could degrade microcystins as a sole carbon source, therefore the bacteria utilizes microcystin. The bacteria could degrade microcystins LR, YR and RR, and their specific degradation rates were 0.66 h(-1), 1.25 h(-1) and 1.90 h(-1), respectively. The degradation activity and growth rate of the bacteria was decreased under alkaline pH conditions.

引用

页码：13 / 18

页数：6

共 14 条

[1] Enzymatic pathway for the bacterial degradation of the cyanobacterial cyclic peptide toxin microcystin LR [J].