Regulation of conjugative transfer of plasmids and integrative conjugative elements

被引:57
作者
Alfredo Banuelos-Vazquez, Luis [1 ]
Torres Tejerizo, Gonzalo [2 ,3 ]
Brom, Susana [1 ]
机构
[1] Univ Nacl Autonoma Mexico, Programa Ingn Genom, Ctr Ciencias Genom, Ave Univ 1001, Cuernavaca 62210, Morelos, Mexico
[2] Univ Bielefeld, Ctr Biotechnol CeBiTec, Univ Str 27, D-33615 Bielefeld, Germany
[3] Univ Nacl La Plata, Dept Ciencias Biol, Fac Ciencias Exactas, IBBM,CCT,CONICET La Plata, Calles 47 & 115, RA-1900 La Plata, Buenos Aires, Argentina
关键词
Plasmid; Conjugative transfer; Regulation; Ice; HORIZONTAL GENE-TRANSFER; RHIZOBIUM-ETLI CFN42; PATHOGENICITY ISLAND PAPI-1; LEGUMINOSARUM BV VICIAE; ACID 2,4-D DEGRADATION; CLC GENOMIC ISLAND; SP STRAIN B13; SYMBIOTIC PLASMID; AGROBACTERIUM-TUMEFACIENS; CLOSTRIDIUM-PERFRINGENS;
D O I
10.1016/j.plasmid.2017.04.002
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
Horizontal gene transfer has been recognized as one of the principal contributors to bacterial evolution and diversification. One of the mechanisms involved in this process is conjugative transfer of plasmids and Integrative Conjugative Elements (ICEs). Plasmids and ICEs often encode traits beneficial for bacterial survival in specific environments, or for the establishment of symbiosis or pathogenesis, in addition to genes allowing conjugative transfer. In this review, we analyze the mechanisms that regulate the expression of conjugative transfer genes. For traits such as antibiotic or metal resistance, the compounds involved may induce conjugative transfer directly, while symbiosis and pathogenesis are modulated by quorum-sensing and/or signal molecules released by the host. However, multiple layers of regulation are usually involved in modulating transfer. In addition to the plasmid-encoded regulatory elements, conjugation seems to be regulated by what we have labeled as the "internal environment", defined by the interaction between the host chromosome and the plasmids or ICEs. Another regulatory level depends on the "external environment", which affects conjugative transfer due to the composition and conditions of the community.
引用
收藏
页码:82 / 89
页数:8
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