Ethylene signalling affects susceptibility of tomatoes to Salmonella

Marvasi, Massimiliano, Noel, Jason T., George, Andrée S., Farias, Marcelo A., Jenkins, Keith T., Hochmuth, George, Xu, Yimin, Giovanonni, Jim J. and Teplitski, Max (2014) Ethylene signalling affects susceptibility of tomatoes to Salmonella. Microbial biotechnology, 7 (6). pp. 545-555. ISSN 1751-7915

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Fresh fruits and vegetables are increasingly recognized as important reservoirs of human pathogens, and therefore, significant attention has been directed recently to understanding mechanisms of the interactions between plants and enterics, like Salmonella. A screen of tomato cultivars for their susceptibility to Salmonella revealed significant differences in the ability of this human pathogen to multiply within fruits; expression of the Salmonella genes (cysB, agfB, fadH) involved in the interactions with tomatoes depended on the tomato genotype and maturity stage. Proliferation of Salmonella was strongly reduced in the tomato mutants with defects in ethylene synthesis, perception and signal transduction. While mutation in the ripening-related ethylene receptor Nr resulted only in a modest reduction in Salmonella numbers within tomatoes, strong inhibition of the Salmonella proliferation was observed in rin and nor tomato mutants. RIN and NOR are regulators of ethylene synthesis and ripening. A commercial tomato variety heterozygous for rin was less susceptible to Salmonella under the greenhouse conditions but not when tested in the field over three production seasons.

Item Type: Article
Additional Information: First published: 29 May 2014
Research Areas: A. > School of Science and Technology > Natural Sciences
Item ID: 15755
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Depositing User: Massimiliano Marvasi
Date Deposited: 06 May 2015 09:58
Last Modified: 02 Jun 2019 18:35

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