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Xanthomonas axonopodis pv. alfalfae (bacterial alfalfa leaf spot )
Xanthomonas axonopodis pv. alfalfae
bacterial alfalfa leaf spot
Bacterium alfalfae, Phytomonas alfalfae, Pseudomonas alfalfae, Xanthomonas alfalfae, Xanthomonas campestris pv. alfalfae, Xanthomonas phaseoli f.sp. alfalfae
Widespread in Africa, Australia, Asia, USA and Europe.
Reported in IA, KS, WI, MD
2022-10-09
bacterium
Sudan
Restricted to lucerne/alfalfa, in nature. Several other legumes are infected by artificial inoculation including Medicago truncatula, Medicago esculenta, Trifolium incartum, Lablab purpureus, Melilotus indica, Phaseolus vulgaris, Pisum sativum, Vicia benghalensis and Vigna mungo.
XANTAL
The disease is present in Sudan.
1 Known Hosts
Medicago sativa
alfalfa
No
XANTAL-1, XANTAL-2, XANTAL-3
The pathogen can survive for several years in hay or in debris with stored seed, allowing it to be transported to new areas. But clean seed is not a pathway.
XANTAL-1
Xanthomonas axonopodis pv. alfalfae In: Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
XANTAL-2
Claflin, L. E.; Stuteville, D. L. 1973. Survival of Xanthomonas alfalfae in alfalfa debris and soil. Plant Disease Reporter 57:52-53
XANTAL-3
Graham, J. H., Frosheiser, F. I., Stuteville, D. L., and Erwin, D. C. 1979. A Compendium of Alfalfa Diseases. The American Phytopathological Society, St. Paul, MN.
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