Enzymatic, outer membrane proteins and plasmid alterations of starved Vibrio parahaemolyticus and Vibrio alginolyticus cells in seawater.
The marine bacteria Vibrio parahaemolyticus and V. alginolyticus were incubated in seawater for 8 months to evaluate their adaptative responses to starvation. The starved cells showed an altered biochemical and enzymatic profiles, respectively, on Api 20E and Api ZYM systems and an evolution to the filterable minicells state capable to pass membrane pore size 0.45 microm. Outer membrane proteins patterns of stressed bacteria were also altered. Indeed, these modifications were manifested by the appearance and/or disappearance of bands as well as in the level of expression of certain proteins. Plasmids profiles analysis showed that V. alginolyticus ATCC 33787 lost three plasmids, whereas other tested strains conserved their initial profiles.
Laboratoire d'Analyse, Traitement et Valorisation des Polluants de l'Environnement et des Produits, Faculté de Pharmacie Rue Avicenne, Monastir, Tunisia. fetyben@yahoo.fr
Fethi Ben
FB
Abdallah
Héla
H
Kallel
Amina
A
Bakhrouf
D000222:Adaptation, Physiological / Q000235:genetics; D001425:Bacterial Outer Membrane Proteins / Q000235:genetics / Q000378:metabolism*; D015964:Gene Expression Regulation, Bacterial; D010957:Plasmids / Q000235:genetics*; D012623:Seawater / Q000382:microbiology; D044149:Vibrio alginolyticus / Q000201:enzymology* / Q000235:genetics; D014736:Vibrio parahaemolyticus / Q000201:enzymology* / Q000235:genetics; D014871:Water Microbiology
D001425:Bacterial Outer Membrane Proteins