Xanthomonas campestris
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Revision as of 06:01, 7 July 2010
Xanthomonas campestris
Xanthomonas is a Gram-negative rod-shaped bacteria known for being a common plant pathogen.
| Kingdom | Eubacteria |
|---|---|
| Phylum | Proteobacteria |
| Class | Gamma proteobacteria |
| Order | Xanthomonadales |
| Family | Xanthomonadaceae |
| Genus | Xanthomonas |
| Species | X. campestris |
| Binomial | Xanthomonas campestris |
Surface Characteristics
Virulence
Their virulence appears to be due primarily to secreted and surface compounds that could increase host nutrient loss, or avoid or suppress unfavorable conditions in the host. Type II and III secretory pathways are essential for virulence. Some individual extracellular enzymes (type II-secretion dependent) affect final bacterial population levels, whereas some avirulence gene products (type III-secretion dependent) affect virulence by altering host metabolism. Avr proteins, probably secreted via a pilus, can also be recognized by host resistance gene products. Virulence is also associated with bacterial surface polysaccharides, which may help to avoid host defense responses, and regulatory gene systems, which can control virulence gene expression.
References
The molecular genetics of virulence of Xanthomonas campestris
