Abstract
PathogenicVibrio species were assayed for the production and utilization of siderophores. Although some similarities were observed in the types of siderophores secreted, chemical and biological assays indicated that several different iron transport systems are expressed by members of this genus. Bioassays indicated that each species tested produced compounds that stimulated their growth in low-iron media. Phenolate compounds were detected by chemical assay of culture supernatants of iron-starvedV. cholerae, V. fluvialis, V. vulnificus, andV. anguillarum, but notV. parahaemolyticus orV. alginolyticus. Vibrio vulnificus synthesizes an additional, relatively species-specific compound. This unique siderophore has greater biological activity than theV. vulnificus phenolate.
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