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Cited by 301

The DOI matches its Crossref record; 40 of the 40 references it cites were found in a registry or an index.

Quorum Sensing Regulates Exopolysaccharide Production, Motility, and Virulence in Pseudomonas syringae

Quiñones, Beatriz, Dulla, Glenn, Lindow, Steven E.·2005·Molecular Plant-Microbe Interactions®
DOI 10.1094/mpmi-18-0682
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Abstract

The N-acyl homoserine lactone (AHL)-mediated quorumsensing system in the phytopathogen Pseudomonas syringae pv. syringae requires the AHL synthase AhlI and the regulator AhlR, and is additionally subject to regulation by AefR. The contribution of quorum sensing to the expression of a variety of traits expected to be involved in epiphytic fitness and virulence of P. syringae were examined. Both an aefR- mutant and an ahlR- double mutant, deficient in AHL production, were significantly impaired in alginate production and had an increased susceptibility to hydrogen peroxide compared with the wild-type strain. These mutants were hypermotile in culture, invaded leaves more rapidly, and caused an increased incidence of brown spot lesions on bean leaves after a 48-h moist incubation. Interestingly, an aefR- mutant was both the most motile and virulent. Like the wild-type strain, the AHL-deficient mutant strains incited water-soaked lesions on bean pods. However, lesions caused by an ahlI- ahlR- double mutant were larger, whereas those incited by an aefR- mutant were smaller. In contrast, tissue maceration of pods, which occurs at a later stage of infection, was completely abolished in the AHL-deficient mutants. Both the incidence of disease and in planta growth of P. syringae pv. tabaci were greatly reduced in transgenic tobacco plants that produced AHL compared with wild-type plants. These results demonstrate that quorum sensing in P. syringae regulates traits that contribute to epiphytic fitness as well as to distinct stages of disease development during plant infection.

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Metadata

Authors
Quiñones, B., Dulla, G., & Lindow, S. E.
Venue
Molecular Plant-Microbe Interactions®
Publisher
Scientific Societies
Published
2005-07
Volume
18
Issue
7
Pages
682-693
ISSN
  • 0894-0282 (ISSN-L)
  • 1943-7706
DOI
10.1094/mpmi-18-0682
OpenAlex
W2024297561
Cited by
301
References
40
FWCI
14.91
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Quorum Sensing Regulates Exopolysaccharide Production, Motility, and Virulence in Pseudomonas syringae. https://app.cochat.ai/papers/10.1094/mpmi-18-0682
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Quiñones, B., Dulla, G., & Lindow, S. E. (2005). Quorum Sensing Regulates Exopolysaccharide Production, Motility, and Virulence in Pseudomonas syringae. Molecular Plant-Microbe Interactions®. https://doi.org/10.1094/mpmi-18-0682

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