INTERRELATIONSHIPS BETWEEN STRAINS OF SALMONELLA-ENTERITIDIS BELONGING TO PHAGE TYPE-4, TYPE-7, TYPE-7A, TYPE-8, TYPE-13, TYPE-13A, TYPE-23, TYPE-24 AND TYPE-30

被引:40
作者
THRELFALL, EJ
CHART, H
WARD, LR
DESA, JDH
ROWE, B
机构
[1] Laboratory of Enteric Pathogens, Central Public Health Laboratory, London, Colindale
来源
JOURNAL OF APPLIED BACTERIOLOGY | 1993年 / 75卷 / 01期
关键词
D O I
10.1111/j.1365-2672.1993.tb03405.x
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
Salmonella enteritidis strain P278849 expressed long-chain lipopolysaccharide (LPS, termed 'smooth'), carried plasmids of 38, 34 (pDEP 44, incompatibility group N, R-type AS), 2.0 and 1 MDa, and belonged to phage type (PT) 23. Introduction of pDEP 44 into a smooth strain of Salm. enteritidis PT 4 produced a smooth strain of Salm. enteritidis of PT 24. Transfer of this plasmid into a strain of PT 8 also resulted in formation of a smooth strain of Salm. enteritidis of PT 24. Moving pDEP 44 into strains of Salm. enteritidis of PTs 7 or 7a which did not express LPS (termed 'rough') resulted in rough strains of PT 23. In contrast, transfer of this plasmid into a smooth strain of Salm. enteritidis PT 7a resulted in a smooth strain of PT 23. Introduction of pDEP 44 into strains of Salm. enteritidis of PT 13 or PT 13a did not change the phage type, whereas transferring the plasmid into strains of PT 30 caused strains to become resistant to lysis by the typing phages and therefore untypable. The possibility of strains of Salm. enteritidis of PT 8 being the progenitors of strains of Salm. enteritidis of PT 24 must now be considered when investigating the epidemiology of Salm. enteritidis of PT 24 infections in areas where Salm. enteritidis PT 8 is common.
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页码:43 / 48
页数:6
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