Genotypic and phenotypic variation among Lysobacter capsici strains isolated from Rhizoctonia suppressive soils

J. Postma, E.H. Nijhuis, A.F. Yassin

    Research output: Contribution to journalArticleAcademicpeer-review

    15 Citations (Scopus)

    Abstract

    Four Gram-negative bacterial strains, recovered from clay soils cultivated with different crops in the Netherland, were subjected to a polyphasic taxonomic study in order to clarify their taxonomic status. Comparative analysis of the 16S rRNA gene sequences revealed that they belong to the genus Lysobacter and to be highly related to the type strains of L. antibioticus DSM 2044T, L. gummosus DSM 6980T, and L. capsici DSM 19286T, displaying 99.1–99.3%, 99.2–99.6% and 99.4–100% sequence similarities, respectively, to these species. The results of DNA–DNA hybridization studies unambigiously indicated that the four strains belonged to the species L. capsici. Nevertheless,DNAfingerprinting and phenotypic haracterization indicated that there was a considerable diversification and niche differentiation among the strains belonging to L. capsici. The newly identified L. capsici strains strongly inhibit Rhizoctonia solani AG2 and originate from Rhizoctonia-suppressive soils where also populations of L. antibioticus and L. gummosus were present. This is the first report of the presence of combined populations of closely related Lysobacter spp. within agricultural soils
    Original languageEnglish
    Pages (from-to)232-235
    JournalSystematic and Applied Microbiology
    Volume33
    Issue number4
    DOIs
    Publication statusPublished - 2010

    Keywords

    • renaturation rates
    • dna hybridization
    • base ratio
    • sp nov.
    • genus
    • bacteria

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