Xanthomonas campestris: Difference between revisions
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==Description and significance== | ==Description and significance== | ||
''Xanthomonas campestris'' is an aerobic, Gram-negative rod known to cause the black rot in crucifers by darkening the vascular tissues. Host associated, over 20 different pathovars of ''X. campestris'' have been identified by their distinctive pathogenicity on a wide range of plants including crops and wild plants. This bacteria is mesophilic with optimal temperature at 25-30 degrees Celsius (77-85 degrees Fahrenheit). It is inactive at temperatures below 10 degrees Celsius (50 degrees Fahrenheit) [10]. ''X. campestris'' have a long pili that helps them glide through water. They can live in a soil for over a year and spread through irrigation and surface water. Spraying healthy plants with copper fungicides may reduce the spread of the bacteria in the field. However, once the plant has been infected, ''X. campestris'' will eventually spread to the seed stalk inhibiting the growth of a healthy offspring. | |||
By pure culture fermentation, ''X. campestris'' can produce an extracellular polysaccharide known as xanthan gum that is commerically manufactured as a stabilizing agent used in many industries. This organism is a model organism for plant pathogens to study their interaction between host. Due to the deficit in crops, further study of ''X. campestris’'' genome may provide a solution to make plants resistant to this pathogen. | |||
==Genome structure== | ==Genome structure== | ||
Revision as of 07:51, 27 August 2007
A Microbial Biorealm page on the genus Xanthomonas campestris
Classification
Higher order taxa
[Kingdom] Bacteria
[Phylum] Proteobacteria
[Class] Gamma Proteobacteria
[Order] Xanthomonadales
[Family] Xanthomonadaceae
[Genus] Xanthomonas
[Species] Xanthomonas campestris
Species
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NCBI: Taxonomy |
Xanthomonas campestris
Description and significance
Xanthomonas campestris is an aerobic, Gram-negative rod known to cause the black rot in crucifers by darkening the vascular tissues. Host associated, over 20 different pathovars of X. campestris have been identified by their distinctive pathogenicity on a wide range of plants including crops and wild plants. This bacteria is mesophilic with optimal temperature at 25-30 degrees Celsius (77-85 degrees Fahrenheit). It is inactive at temperatures below 10 degrees Celsius (50 degrees Fahrenheit) [10]. X. campestris have a long pili that helps them glide through water. They can live in a soil for over a year and spread through irrigation and surface water. Spraying healthy plants with copper fungicides may reduce the spread of the bacteria in the field. However, once the plant has been infected, X. campestris will eventually spread to the seed stalk inhibiting the growth of a healthy offspring.
By pure culture fermentation, X. campestris can produce an extracellular polysaccharide known as xanthan gum that is commerically manufactured as a stabilizing agent used in many industries. This organism is a model organism for plant pathogens to study their interaction between host. Due to the deficit in crops, further study of X. campestris’ genome may provide a solution to make plants resistant to this pathogen.
Genome structure
Describe the size and content of the genome. How many chromosomes? Circular or linear? Other interesting features? What is known about its sequence? Does it have any plasmids? Are they important to the organism's lifestyle?
Cell structure and metabolism
Describe any interesting features and/or cell structures; how it gains energy; what important molecules it produces.
Ecology
Describe any interactions with other organisms (included eukaryotes), contributions to the environment, effect on environment, etc.
Pathology
How does this organism cause disease? Human, animal, plant hosts? Virulence factors, as well as patient symptoms.
Application to Biotechnology
Does this organism produce any useful compounds or enzymes? What are they and how are they used?
Current Research
Enter summaries of the most recent research here--at least three required
References
Edited by Tammie Chau, student of Rachel Larsen
