Verticillium Wilt of Ailanthus altissima : Susceptibility of Associated Tree Species
2009; American Phytopathological Society; Volume: 93; Issue: 11 Linguagem: Inglês
10.1094/pdis-93-11-1158
ISSN1943-7692
AutoresMark J. Schall, Donald D. Davis,
Tópico(s)Phytochemical compounds biological activities
ResumoVerticillium albo-atrum causes unprecedented wilt and mortality of the invasive tree-of-heaven (Ailanthus altissima) within forests of south-central Pennsylvania. Stem inoculation of potted Ailanthus seedlings in the greenhouse and canopy Ailanthus trees in the field with V. albo-atrum resulted in 100% mortality. Stem inoculation of understory striped maple saplings in the field also resulted in 100% mortality. However, the high susceptibility of striped maple was not observed in naturally infected stands, where only 1% of striped maple saplings exhibited Verticillium wilt. Inoculation of chestnut oak, northern red oak, red maple, sugar maple, white ash, and yellow-poplar seedlings or canopy trees with V. albo-atrum did not induce wilt symptoms. Non-Ailanthus tree species growing adjacent to dead and dying Ailanthus trees in the field were asymptomatic. Pending further studies, V. albo-atrum should be considered as a potential biocontrol agent for invasive Ailanthus.
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