Molecular characterization of the leucine cluster in Buchnera PSY, primary endosymbiont of the aphid Pemphigus spyrothecae

B. Sabater-Munoz, L. Gómez-Valereo, R.C.H.J. van Ham, F.J. Silva, A. Latorre

    Research output: Contribution to journalArticleAcademicpeer-review

    11 Citations (Scopus)

    Abstract

    Buchnera strains from most aphid subfamilies studied to date have been found to carry the leucine gene cluster (leuA, -B, -C, and -D) on a plasmid, an organization unique among bacteria. Here, however, we demonstrate a classical chromosomal location of the cluster in Buchnera sp. strain PSY from the aphid Pemphigus spyrothecae (subfamily Pemphiginae). The genes that flank leuABCD in Buchnera sp. strain PSY appear to be adjacent in the genome of Buchnera sp. strain APS, a strain carrying a leucine plasmid. We propose that the presence of a leucine plasmid predates the diversification of symbiotic Buchnera and that the chromosomal location observed in Buchnera sp. strain PSY arose by a transfer of the leucine genes from a plasmid to the chromosome
    Original languageEnglish
    Pages (from-to)2572-2575
    JournalApplied and Environmental Microbiology
    Volume68
    Issue number5
    DOIs
    Publication statusPublished - 2002

    Keywords

    • anthranilate synthase trpeg
    • symbiotic bacteria
    • plasmid
    • evolution
    • biosynthesis
    • genetics

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