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Title: Pseudomonas sax Genes Overcome Aliphatic Isothiocyanate - Mediated Non-Host Resistance in Arabidopsis

Source: Science. 331: 1185 -1188. 2011

Author(s)Fan, Jun; Crooks, Casey; Creissen, Gary; Hill, Lionel; Fairhurst, Shirley; Doerner, Peter; Lamb, Chris

Publication Year: 2011  View PDF »

Category: Journal Articles
Associated Research Project(s):   FPL-4712-3A

Abstract: Most plant-microbe interactions do not result in disease; natural products restrict non-host pathogens. We found that sulforaphane (4-methylsulfinylbutyl isothiocyanate), a natural product derived from aliphatic glucosinolates, inhibits growth in Arabidopsis of non-host Pseudomonas bacteria in planta. Multiple sax genes (saxCAB/F/D/G) were identified in Pseudomonas species virulent on Arabidopsis. These sax genes are required to overwhelm isothiocyanate-based defenses and facilitate a disease outcome, especially in the young leaves critical for plant survival. Introduction of saxCAB genes into non-host strains enabled them to overcome these Arabidopsis defenses. Our study shows that aliphatic isothiocyanates, previously shown to limit damage by herbivores, are also crucial, robust, and developmentally regulated defenses that underpin non-host resistance in the Arabidopsis-Pseudomonas pathosystem.

Keywords: Phytopathogenic bacteria, bacterial diseases of plants, pathogenic bacteria, disease susceptibility, Arabidopsis, biodegradation, bacteria, microorganisms, molecular genetics, isothiocyanates, plants, disease resistance, pest resistance, plant chemical defenses, Pseudomonas sax, resistance to decay, phytopathogenic bacteria, biocides, aliphatic isothiocyanate, sulforaphane, genetic analysis

Publication Review Process: Formally Refereed

File size: 209 kb(s)

Date posted: 11/25/2011

This publication is also viewable on Treesearch:  view
RITS Product ID: 40269
Current FPL Scientist associated with this product
Crooks, M.E. Casey
Research Microbiologist
  

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