Significance of Na+ in the fish pathogen, Vibrio anguillarum, under energy depleted condition.
Vibrio anguillarum kills various kinds of fish over salinities ranging from seawater to freshwater. In this study, we investigated the role of Na(+) in V. anguillarum, especially under energy-depleted conditions such as in natural seawater. V. angustum S14, which is a typical marine vibrio, was used for comparison. V. anguillarum only required Na(+) for starvation-survival, but in contrast, V. angustum S14 always required Na(+) for both growth and starvation-survival. In marine vibrios, Na(+) is used in the Na(+)-dependent respiratory chain that produces the sodium motive force (SMF) across the cell membrane. It has been considered that marine vibrios always need a SMF produced by Na(+), however in the case of V. anguillarum, the SMF is not required for growth, but becomes more important for starvation-survival.
Fujiwara-Nagata
Erina
E
Department of Fisheries, Kinki University, Nara 631-8505, Japan.
Eguchi
Mitsuru
M
D000818:Animals; D018533:Biomass; D002258:Carbonyl Cyanide m-Chlorophenyl Hydrazone / Q000494:pharmacology; D002462:Cell Membrane / Q000378:metabolism; D015169:Colony Count, Microbial; D003470:Culture Media / Q000737:chemistry; D004579:Electron Transport; D004734:Energy Metabolism; D005393:Fish Diseases / Q000382:microbiology; D005399:Fishes / Q000382:microbiology; D017136:Ion Transport; D008564:Membrane Potentials / Q000187:drug effects; D012965:Sodium Chloride / Q000378:metabolism*; D000254:Sodium-Potassium-Exchanging ATPase / Q000502:physiology; D014733:Vibrio / Q000187:drug effects / Q000254:growth & development* / Q000302:isolation & purification / Q000378:metabolism*; D014871:Water Microbiology
D003470:Culture Media; D012965:Sodium Chloride; D002258:Carbonyl Cyanide m-Chlorophenyl Hydrazone; D000254:Sodium-Potassium-Exchanging ATPase