(A) Togninia minima colony growing on PDA plate. Photos by Dr. Jose Ramon Urbez Torres - Agriculture and Agri-Food Canada

(B) Togninia minima colony growing on berries. Photos by Dr. Jose Ramon Urbez Torres - Agriculture and Agri-Food Canada

(C) Symptoms of esca disease. Photos by Dr. Jose Ramon Urbez Torres - Agriculture and Agri-Food Canada

Equivalent name: Togninia minima

The genome of Togninia minima was sequenced by the Department of Viticulture and Enology at University of California Davis (http://cantulab.github.com).

The ascomycetes Phaeoacremonium aleophilum W. Gams, P. W. Crous, M. J. Wingfield, and L. Mugnai (teleomorph, Togninia minima), Phaeomoniella chlamydospora, and other fungal species are the causal agents of the esca disease complex of grapevines.  Disease symptoms include, internally, wood discoloration, streaking, and vascular necrosis and, externally, leaf chlorosis and necrotic stripes, berry black spots, decline in vigor and yield, and in severe cases plant death.

The sequenced strain (UCR-PA7) was collected from the margin of a grapevine (Vitis viniferacv. “Thomson”) wood canker in a commercial vineyard (Fresno County, CA) in October 2011.