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ARS Home Northeast Area Beltsville, Maryland (BARC) Beltsville Agricultural Research Center Molecular Plant Pathology Laboratory People Ing Ming Lee





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Healthy and Diseasedheadline bar 
 **Aster yellows epidemic in various crops and weeds in southwestern Texas.** An apparently healthy carrot plant (left) and an infected (right) carrot with symptoms showing extensive shoot proliferation.An aster yellows-infected parsley plant (front) showing virescence and phyllody of flowers and yellowing of leaves.An aster yellows-infected dill plant showing virescence and phyllody of flowers and abnormal elongation of the inflorescence.An apparently healthy (left) and two aster yellows-infected onion plants showing shoot proliferation and yellowing of shoots and stunting of plants.An aster yellows-infected cabbage plant showing purple discoloration of leaves and sprouting at the basal stem.Apparently healthy (left) and aster yellows-infected (right) prickly lettuce plants showing shoot proliferation, virescence of flowers, and yellowing of new shoots.An apparently healthy (left) and an aster yellows-infected (right) lazy daisy plant showing proliferation and yellowing of new shoots.An apparently healthy (left) and an aster yellows-infected false ragweed plant (right) showing proliferation and yellowing of new shoots. Phytopathology 93: 1369-1377, 2003  PDF files on this page require the free Adobe Acrobat Reader?. Adobe? also provides free PDF tools for the visually impaired.


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