Plant Disease (2015) 99, p. 1274 (Singh et al.)

R. Singh, L. Graney and M. Williamson (2015)
First report of boxwood dieback caused by Colletotrichum theobromicola in the United States
Plant Disease 99 (9), 1274-1274
Abstract: Between 2011 and 2014, boxwood trees (Buxus spp.) growing in the states of Louisiana, North Carolina, New York, Virginia, Indiana, and South Carolina, U.S.A. were observed with symptoms of branch dieback with light-tan foliage. Black discoloration was observed beneath the bark and it extended along the affected stems and branches. Transverse sections of symptomatic stems and branches revealed dead tissue extending through the wood. The fungus Colletotrichum theobromicola was isolated from the diseased plants. The identification was based on morphological characteristics and DNA sequence analysis. Pathogenicity of the isolates was demonstrated by inoculation and re-isolation.
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Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Colletotrichum theobromicola	Buxus (crop)	U.S.A. (mid S)
	Colletotrichum theobromicola	Buxus (crop)	U.S.A. (NE)
	Colletotrichum theobromicola	Buxus (crop)	U.S.A. (SE)