CHARACTERIZATION AND COMPARISON OF SERRATIA MARCESCENS ISOLATED FROM EDIBLE CACTUS AND FROM SILKWORM FOR VIRULENCE POTENTIAL AND CHITOSAN SUSCEPTIBILITY

文献类型: 外文期刊

第一作者: Li, Bin

作者: Li, Bin;Liu, Baoping;Tang, Qiaomei;Zhang, Guoqing;Xie, Guanlin;Yu, Rongrong;Wang, Yanli;Sun, Guochang

作者机构:

关键词: Serratia marcescens;Cactus;Silkworm;Characterization;Virulence;Chitosan susceptibility

期刊名称:BRAZILIAN JOURNAL OF MICROBIOLOGY ( 影响因子:2.476; 五年影响因子:3.391 )

ISSN: 1517-8382

年卷期: 2011 年 42 卷 1 期

页码:

收录情况: SCI

摘要: Representative strains of Serratia marcescens from an edible cactus plant and silkworms were characterized and a comparison based on their cellular fatty acid composition, 16S rRNA and groE gene sequence analysis as well as silkworm virulence and chitosan susceptibility was carried out. Results from this study indicate that there are no significant differences between the phenotypic and molecular characterization, virulence and chitosan susceptibility of the S. marcescens strains from the cactus plant and silkworms. Silkworms inoculated with S. marcescens from either plant or silkworm resulted in nearly 100% mortality. Chitosan solution exhibited strong antibacterial activity against S. marcescens. This activity increased with the increase of chitosan concentration and incubation time regardless of the strain source. Also, the results indicate that the plant associated S. marcescens maybe plays a possible role in the contamination of humans and animals, in particular silkworms, while chitosan showed a potential to control the contamination caused by S. marcescens.

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