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Polyhydroxyalkanoates (PHAs) are highly reduced bacterial storage compounds that increase fitness in changing environments. It has previously shown that polyhydroxybutyrate (PHB) accumulation is essential during the growth under cold conditions. In this work, the relationship between PHB accumulation and biofilm development at low temperature was investigated. P. extremaustralis, an Antarctic strain able to accumulate PHB, and its phaC mutant, impaired in the synthesis of this polymer, were used to analyze microaerobic growth, biofilm development, EPS content and motility. PHB accumulation increased motility and survival of planktonic cells in the biofilms developed by P. extremaustralis under cold conditions. Microaerobic conditions rescued the cold growth defect of the mutant strain. The PHB accumulation capability could constitute an adaptative advantage for the colonization of new ecological niches in stressful environments. © 2011 Springer.


Documento: Artículo
Título:Poly(3-hydroxybutyrate) influences biofilm formation and motility in the novel Antarctic species Pseudomonas extremaustralis under cold conditions
Autor:Tribelli, P.M.; López, N.I.
Filiación:Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 2160, C1428EGA Buenos Aires, Argentina
Palabras clave:Biofilms; Cold; Motility; Polyhydroxybutyrate; Pseudomonas; hydroxybutyric acid; poly(3 hydroxybutyric acid); poly-beta-hydroxybutyrate; polyester; adaptation; Antarctica; article; biofilm; cold; growth, development and aging; metabolism; mutation; physiology; Pseudomonas; Adaptation, Physiological; Antarctic Regions; Biofilms; Cold Temperature; Hydroxybutyrates; Mutation; Polyesters; Pseudomonas; Bacteria (microorganisms); Pseudomonas
Página de inicio:541
Página de fin:547
Título revista:Extremophiles
Título revista abreviado:Extremophiles
CAS:hydroxybutyric acid, 1320-61-2, 35054-79-6; poly(3 hydroxybutyric acid), 26063-00-3; Hydroxybutyrates; Polyesters; poly-beta-hydroxybutyrate, 26063-00-3


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---------- APA ----------
Tribelli, P.M. & López, N.I. (2011) . Poly(3-hydroxybutyrate) influences biofilm formation and motility in the novel Antarctic species Pseudomonas extremaustralis under cold conditions. Extremophiles, 15(5), 541-547.
---------- CHICAGO ----------
Tribelli, P.M., López, N.I. "Poly(3-hydroxybutyrate) influences biofilm formation and motility in the novel Antarctic species Pseudomonas extremaustralis under cold conditions" . Extremophiles 15, no. 5 (2011) : 541-547.
---------- MLA ----------
Tribelli, P.M., López, N.I. "Poly(3-hydroxybutyrate) influences biofilm formation and motility in the novel Antarctic species Pseudomonas extremaustralis under cold conditions" . Extremophiles, vol. 15, no. 5, 2011, pp. 541-547.
---------- VANCOUVER ----------
Tribelli, P.M., López, N.I. Poly(3-hydroxybutyrate) influences biofilm formation and motility in the novel Antarctic species Pseudomonas extremaustralis under cold conditions. Extremophiles. 2011;15(5):541-547.