Bacterial capsules: No barrier against Bdellovibrio

被引:36
作者
Koval, SF [1 ]
Bayer, ME [1 ]
机构
[1] FOX CHASE CANC CTR, INST CANC RES, PHILADELPHIA, PA 19111 USA
来源
MICROBIOLOGY-SGM | 1997年 / 143卷
关键词
Bdellovibrio; capsules; predation;
D O I
10.1099/00221287-143-3-749
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Bdellovibrio bacteriovorus 109J attached to both capsulated and noncapsulated Escherichia coli K29 cells. Electron microscopy revealed penetration of the thick polysaccharide capsule without any major disintegration of the neighbouring capsular matrix. The capsule remained intact during bdelloplast formation and lysis was unaffected by capsulation of the prey cell. This study shows that, in contrast to its effect on bacteriophage penetration and its protective activities against immune defence mechanisms, the capsule of E. coli does not serve as a barrier against invasion by B. bacteriovorus.
引用
收藏
页码:749 / 753
页数:5
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