Xanthan Induces Plant Susceptibility by Suppressing Callose Deposition
Open Access
- 10 March 2006
- journal article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 141 (1), 178-187
- https://doi.org/10.1104/pp.105.074542
Abstract
Xanthan is the major exopolysaccharide secreted by Xanthomonas spp. Despite its diverse roles in bacterial pathogenesis of plants, little is known about the real implication of this molecule in Xanthomonas pathogenesis. In this study we show that in contrast to Xanthomonas campestris pv campestris strain 8004 (wild type), the xanthan minus mutant (strain 8397) and the mutant strain 8396, which is producing truncated xanthan, fail to cause disease in both Nicotiana benthamiana and Arabidopsis (Arabidopsis thaliana) plants. In contrast to wild type, 8397 and 8396 strains induce callose deposition in N. benthamiana and Arabidopsis plants. Interestingly, treatment with xanthan but not truncated xanthan, suppresses the accumulation of callose and enhances the susceptibility of both N. benthamiana and Arabidopsis plants to 8397 and 8396 mutant strains. Finally, in concordance, we also show that treatment with an inhibitor of callose deposition previous to infection induces susceptibility to 8397 and 8396 strains. Thus, xanthan suppression effect on callose deposition seems to be important for Xanthomonas infectivity.Keywords
This publication has 39 references indexed in Scilit:
- Suppression of host defense in compatible plant–Pseudomonas syringae interactionsCurrent Opinion in Plant Biology, 2005
- AvrPtoB: A bacterial type III effector that both elicits and suppresses programmed cell death associated with plant immunityFEMS Microbiology Letters, 2005
- β‐amino‐butyric acid‐induced resistance against necrotrophic pathogens is based on ABA‐dependent priming for calloseThe Plant Journal, 2004
- A saponin-detoxifying enzyme mediates suppression of plant defencesNature, 2002
- Cellulose biosynthesis.Plant Cell, 1995
- Role of the Phytotoxin Coronatine in the Infection ofAmbidopsis thalianabyPseudomonas syringaepv.tomatoMolecular Plant-Microbe Interactions®, 1995
- Defense-Related Gene Induction inBrassica campestrisin Response to Defined Mutants ofXanthomonas campestriswith Altered PathogenicityMolecular Plant-Microbe Interactions®, 1994
- Chitosan-Elicited Callose Synthesis in Soybean Cells as a Ca2+-Dependent ProcessPlant Physiology, 1985
- Interaction of Xanthan Gum with Suspended SolidsJournal of Pharmaceutical Sciences, 1981
- Colonial variation in Xanthomonas campestris NRRL B-1459 and characterization of the polysaccharide from a variant strainCanadian Journal of Microbiology, 1976