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Artículo

Novel environmental class 1 integrons and cassette arrays recovered from an on-farm bio-purification plant

Martini, María CarlaIcon ; Quiroga, María PaulaIcon ; Pistorio, MarianoIcon ; Lagares, AntonioIcon ; Centron, DanielaIcon ; del Papa, Maria FlorenciaIcon
Fecha de publicación: 12/2017
Editorial: Oxford University Press
Revista: FEMS Microbiology Ecology
ISSN: 1574-6941
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Biológicas

Resumen

Rapid dissemination and emergence of novel antibiotic resistance genes among bacteria are rising problems worldwide. Since their discovery in clinical isolates in the late 1980s, class 1 integrons have been found in a wide range of bacterial genera and have been extensively studied as contributors to dissemination of antibiotic resistance. The present study aimed to investigate the presence and structure of class 1 integrons in plasmid-carrying bacterial isolates obtained from a biopurification system used for decontamination of pesticide-contaminated water as well as their possible role as reservoir of antimicrobial resistance gene cassettes. A total of 35 representative isolates were screened for the presence of class 1 integron integrase encoded by intI1. PCR and DNA sequencing revealed the presence of six class 1 integrons with four variable regions: 5΄CS-aadA1b-3΄CS, 5΄CS-aadA2-3΄CS, 5΄CS-aadA11cΔ-3΄CS and 5΄CS-dfrB3-aadA1di-catB2-aadA6k-3΄CS, the last two being unseen arrays of antimicrobial resistance gene cassettes associated with novel environmental alleles of intI1. These four class 1 integrons were identified as being present in four different genera, including Ochrobactrum, and Variovorax, where class 1 integrons have not been previously reported. The results provide evidence of the biopurification systems as a tank of class 1 integron carrying strains and novel environmental class 1 integron integrases associated with antimicrobial resistance gene cassette arrays.
Palabras clave: Agriculture , Antimicrobial Resistance , Biopurification System , Integron , Lateral Gene Transfer , Plasmid
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/47506
DOI: https://dx.doi.org/10.1093/femsec/fix190
URL: https://academic.oup.com/femsec/article-abstract/94/3/fix190/4781311
Colecciones
Articulos(IBBM)
Articulos de INST.DE BIOTECNOLOGIA Y BIOLOGIA MOLECULAR
Articulos(IMPAM)
Articulos de INSTITUTO DE INVESTIGACIONES EN MICROBIOLOGIA Y PARASITOLOGIA MEDICA
Citación
Martini, María Carla; Quiroga, María Paula; Pistorio, Mariano; Lagares, Antonio; Centron, Daniela; et al.; Novel environmental class 1 integrons and cassette arrays recovered from an on-farm bio-purification plant; Oxford University Press; FEMS Microbiology Ecology; 94; 3; 12-2017; 1-9
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