title: Comparative genomics and functional analysis of niche-specific adaptation in Pseudomonas putida.
abstract: Pseudomonas putida is a gram-negative rod-shaped gammaproteobacterium that is found throughout various environments. Members of the species P. putida show a diverse spectrum of metabolic activities, which is indicative of their adaptation to various niches, which includes the ability to live in soils and sediments contaminated with high concentrations of heavy metals and organic contaminants. Pseudomonas putida strains are also found as plant growth-promoting rhizospheric and endophytic bacteria. The genome sequences of several P. putida species have become available and provide a unique tool to study the specific niche adaptation of the various P. putida strains. In this review, we compare the genomes of four P. putida strains: the rhizospheric strain KT2440, the endophytic strain W619, the aromatic hydrocarbon-degrading strain F1 and the manganese-oxidizing strain GB-1. Comparative genomics provided a powerful tool to gain new insights into the adaptation of P. putida to specific lifestyles and environmental niches, and clearly demonstrated that horizontal gene transfer played a key role in this adaptation process, as many of the niche-specific functions were found to be encoded on clearly defined genomic islands.
authors.affiliation: Biology Department, Brookhaven National Laboratory, Upton, NY, USA.
authors.forename: Xiao
authors.initials: X
authors.lastname: Wu
authors.forename: Sébastien
authors.initials: S
authors.lastname: Monchy
authors.forename: Safiyh
authors.initials: S
authors.lastname: Taghavi
authors.forename: Wei
authors.initials: W
authors.lastname: Zhu
authors.forename: Juan
authors.initials: J
authors.lastname: Ramos
authors.forename: Daniel
authors.initials: D
authors.lastname: van der Lelie
mesh_terms: D000222:Adaptation, Physiological; D001426:Bacterial Proteins / Q000235:genetics / Q000378:metabolism; D015964:Gene Expression Regulation, Bacterial; D016680:Genome, Bacterial; D023281:Genomics; D016958:Pseudomonas putida / Q000235:genetics / Q000502:physiology*
chemical_list: D001426:Bacterial Proteins
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