Phaeoacremonium viticola, a new species associated with Esca disease of grapevine in France

A group of Phaeoacremonium isolates first distinguished by the red pigmentation of the reverse of their colonies, is described as a new species, P. viticola, on the basis of molecular data. An intensive sampling in French vineyards affected by the Esca disease has shown that this species is rare compared to P. aleophilum and P. chlamydosporum and is often associated with symptoms on the fruits.