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Identification of Vibrio splendidus as a Member of the Planktonic Luminous Bacteria from the Persian Gulf and Kuwait Region with luxA Probes

By K. H. Nealson, B. Wimpee and C. Wimpee


Hybridization probes specific for the luxA genes of four groups of luminous bacteria were used to screen luminous isolates obtained from the Persian Gulf, near Al Khiran, Kuwait Nine of these isolates were identified as Vibrio harveyi, a commonly encountered planktonic isolate, while three others showed no hybridization to any of the four probes (V. harveyi, Vibrio fischeri, Photobacterium phosphoreum, or Photobacterium leiognathi) under high-stringency conditions. Polymerase chain reaction amplification was used to prepare a luxA probe against one of these isolates, K-1, and this probe was screened under high-stringency conditions against a collection of DNAs from luminous bacteria; it was found to hybridize specifically to the DNA of the species Vibrio splendidus. A probe prepared against the type strain of V. splendidus (ATCC 33369) was tested against the collection of luminous bacterial DNA preparations and against the Kuwait isolates and was found to hybridize only against the type strain and the three unidentified Kuwait isolates. Extensive taxonomic analysis by standard methods confirmed the identification of the 13 isolates

Topics: General Microbial Ecology
Year: 1993
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Provided by: PubMed Central
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