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Cell aggregation is negatively regulated by N-acylhomoserine lactone-mediated quorum sensing in Pantoea ananatis SK-1

Paper ID Volume ID Publish Year Pages File Format Full-Text
20934 43198 2011 4 PDF Available
Title
Cell aggregation is negatively regulated by N-acylhomoserine lactone-mediated quorum sensing in Pantoea ananatis SK-1
Abstract

ABSTRACTPantoea ananatis SK-1 produces N-acylhomoserine lactones (AHLs) and regulates expression of some virulence factors through AHL-mediated quorum sensing. In this study, we discovered that the strain SK-02I, which has a disrupted AHL-synthetic gene, showed constitutive cell aggregation. SK-1 has the ability to aggregate, and cell aggregation inhibitory factors are expressed under control of AHL-mediated quorum sensing. One of the transposon mutants, SK-33M, constitutively aggregates without defective AHL production. A homology search revealed that the transposon integration site was located in the adhesin-like yeeJ gene. Based on RT-PCR analysis, transcription of yeeJ is regulated by AHL-mediated quorum sensing. However, because both the wild-type and SK-33M strains induced necrotic symptoms in onion leaves, we conclude that the yeeJ gene is not involved in the pathogenicity of SK-1.

Keywords
Quorum sensing; N-Acylhomoserine lactone; Pantoea ananatis; Cell aggregation; Adhesin
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Cell aggregation is negatively regulated by N-acylhomoserine lactone-mediated quorum sensing in Pantoea ananatis SK-1
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Bioscience and Bioengineering - Volume 112, Issue 6, December 2011, Pages 566–569
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us