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    Verticillium wilt of the highly invasive tree-of-heaven [Ailanthus altissima (Mill.) Swingle], caused by Verticillium nonalfalfae Interbitzin et al. (1), formerly classified as V. albo-atrum Reinke and Berthold, has been reported in the United States from two states: Pennsylvania (2) and Virginia (3). Infected A. altissima in both states exhibited similar symptoms of wilt, premature defoliation, terminal dieback, yellow vascular discoloration, and mortality. In June 2012, the second author observed dead and dying A. altissima trees in southern Ohio (Pike County) that exhibited symptoms similar to those on diseased A. altissima trees in Pennsylvania and Virginia.

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    Rebbeck, J.; Malone, M.A.; Short, D.P.G.; Kasson, M.T.; O'Neal, E.S.; Davis, D.D. 2013. First report of Verticillium wilt caused by Verticillium nonalfalfae on tree-of-heaven (Ailanthus altissima) in Ohio. Plant Disease. 97(7).


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