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  • 1
    Electronic Resource
    Electronic Resource
    Significance of Na+ in the fish pathogen, Vibrio anguillarum, under energy depleted condition (2004)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 234 (2004), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.2004.tb09528.x
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  • 2
    Electronic Resource
    Electronic Resource
    Characteristics of Na+-dependent respiratory chain in Vibrio anguillarum, a fish pathogen, in comparison with other marine Vibrios (2003)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology ecology 44 (2003), S. 0 
    Details
    ISSN: 1574-6941
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The activity of membrane-bound NADH oxidase of Vibrio anguillarum M93 (serotype J-O-1), which causes vibriosis in freshwater area was activated by Na+ in the same manner as other marine Vibrios. However, in addition to Na+, K+ was also found to positively enhance the NADH oxidase activity of strain M93. This tendency has not been recognized in other marine Vibrios. Furthermore, the Na+-dependent NADH oxidase of strain M93 required less Na+ (0.1 M) for its maximum activity than those of other Vibrios such as Vibrio alginolyticus and ‘Vibrio angustum’ S14, which were in the range of 0.4 M NaCl, similar as seawater. Destruction of H+ motive force by a proton conductor carbonylcyanide m-chlorophenylhydrazone (CCCP) revealed high dependency of V. anguillarum on the primary H+ pump. Even at pH 8.5, V. anguillarum strains other than serotype O-4 could not grow well with the addition of CCCP. In contrast, marine-type Vibrios such as V. alginolyticus and V. angustum S14 can grow well at pH 8.5 even with the addition of CCCP. The lower requirement for Na+ in V. anguillarum probably reflects the salinity of their original habitats.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0168-6496(03)00031-X
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    Paper (German National Licenses)
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