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Appl. Environ. Microbiol., Mar 1997, 1034-1039, Vol 63, No. 3
T Garcia, K Otto, S Kjelleberg and DR Nelson
The physiological changes of Vibrio anguillarum in response to growth in
salmon intestinal mucus were investigated. Growth, survival, and changes in
protein expression during growth in media supplemented with mucus were
compared to growth and starvation in the identical media without mucus. V.
anguillarum exhibited a rapid decline in CFU following growth in mucus as
the sole carbon source. No such decline was observed in Luria broth with a
2% NaCl concentration, in glucose-minimal broth (3M), or during starvation
in a carbon-, nitrogen-, and phosphorus-free salt solution (NSS). The
changes in protein expression during growth in mucus were examined by
labeling cells with [(sup35)S]methionine and analyzing the labeled proteins
by one- and two-dimensional gel electrophoresis and autoradiography.
Comparison of [(sup35)S]methionine-labeled proteins from mucus-grown cells
with 3M-grown cells and NSS-starved cells revealed four de novo
mucus-inducible proteins (Mips). These Mips were localized in the membrane
fraction of V. anguillarum. Additionally, at least one other membrane
protein was found to have increased expression in response to growth in
mucus.
Copyright © 1997, American Society for Microbiology
Growth of Vibrio anguillarum in Salmon Intestinal Mucus
Department of Biochemistry, Microbiology, and Molecular Genetics, University of Rhode Island, Kingston, Rhode Island; Department of General and Marine Microbiology, Goteborg University, Goteborg, Sweden; and School of Microbiology and Immunology, University of New South Wales, Sydney, Australia
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