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ARS Home Northeast Area Beltsville, Maryland (BARC) Beltsville Agricultural Research Center Molecular Plant Pathology Laboratory People John Hartung





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- Con Baker
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**MPPL Home****Citrus Home****Canker****CVC****CTV****CYMV****Greening****Leprosis** **Greening Genes****Dodder****Greening & Seeds****Greening in plants****Citrus Facts****Collection** citrus pathogen logo Citrus Greening Research Similarity between citrus greening pathogen and other pathogens of plantscommon? genes number the are overlap within numbers ovals overlapping similarity genetic display graphicCa. Liberibacter asiaticus'(CaLas), thecausal agent of Huanglongbing (citrus greening),can't be grown in a Petri dish in the laboratory, and only exists inside infected plants and insects, which makes the study of its biology difficult.CaLas, however, shares genes with other bacteria which can be studied more easily  These includeA. tumefaciens, a plant pathogen, B. henselae a blood pathogen, and B. japonicum and S. meliloti two bacteria that infect plants but instead of causing disease, provide nitrogen fertilizer to the plants.You can see that all five bacteria share 514 genes involved with essential metabolism, but each has a large number of genes that are not shared with the other bacteria. Other genes are shared by only two three or four of the bacteria. This sort of analysis provides clues to researchers trying to figure out what makes Liberibacter tick.Click here to read the journal articleFor more information about citrus pathogens please contact Dr. John Hartung  Florida Juice Commission* University of Florida* Sunkist kid's stuff* The Ultimate Citrus Page* California Citrus Research Board* Citrus from Down Under- Citrus Australia * Texas Citrus* * Goes to non-federal site


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