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Appl. Environ. Microbiol., May 1995, 1897-1903, Vol 61, No. 5
EJ Quintero and RM Weiner
Hyphomonas strain MHS-3 (MHS-3) is a marine procaryote with a biphasic life
cycle and which has prosthecate stages that adhere to submerged substrata.
We found that adherent forms produced an exopolysaccharide (EPS) capsule
that bound Glycine max lectin, Arachis hypogaea lectin, and Bauhinia
purpurea lectin (BPA), each having affinity for N-acetyl-d-galactosamine.
It also bound the dye Calcofluor. BPA and Calcofluor were tested for the
ability to hinder MHS-3 adhesion to glass surfaces; they reduced attachment
by >50 and >85%, respectively. Periodate treatment also reduced
attachment (by >80%), but pronase treatment did not. Furthermore, an
EPS(sup-) variant, Hyphomonas strain MHS-3 rad, did not attach well to
surfaces. These results suggest that the MHS-3 EPS capsule is an adhesin.
Copyright © 1995, American Society for Microbiology
Evidence for the Adhesive Function of the Exopolysaccharide of Hyphomonas Strain MHS-3 in Its Attachment to Surfaces
Department of Microbiology, University of Maryland, College Park, Maryland 20742
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