Novel N-Acylhomoserine Lactone-Degrading Bacteria Isolated from the Leaf Surface of Solanum tuberosum and Their Quorum-Quenching Properties

Tomohiro MOROHOSHI; Nobutaka SOMEYA; Tsukasa IKEDA

doi:10.1271/bbb.90283

Microbiology & Fermentation Technology Notes

Novel N-Acylhomoserine Lactone-Degrading Bacteria Isolated from the Leaf Surface of Solanum tuberosum and Their Quorum-Quenching Properties

Tomohiro MOROHOSHI, Nobutaka SOMEYA, Tsukasa IKEDA

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Keywords: quorum sensing, N-acylhomoserine lactone, quorum-quenching, biocontrol, Microbacterium testaceum

JOURNAL FREE ACCESS

2009 Volume 73 Issue 9 Pages 2124-2127

DOI https://doi.org/10.1271/bbb.90283

View "Advance Publication" version (September 7, 2009).

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Abstract

We isolated and identified AHL-degrading bacteria from the leaf surface of Solanum tuberosum. The 16 isolates inactivated both short- and long-chain AHLs. Two of these isolates, identified as Microbacterium testaceum, showed putative AHL-lactonase activity. These two strains interrupted quorum-sensing dependent bacterial infection by plant pathogen Pectobacterium carotovorum subsp. carotovorum. M. testaceum strains, which were isolated in this study, might be useful in the biocontrol of plant diseases.

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