Diaporthe gulyae

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Diaporthe gulyae - a) cultures, b) pycnidial beaks, c-d) conidia and conidiophores (click on image to enlarge it)
Author(s): S.M. Thompson, Y.P. Tan, A.J. Young, S.M. Neate, E.A.B. Aitken and R.G. Shivas
Source: Persoonia (2011) 27 p. 85

Diaporthe gulyae R.G. Shivas, S.M. Thompson & A.J. Young, 2011

This fungus has been reported from several regions as causing stem canker on sunflower. It has been originally described from Australia as causing a severe type of stem canker on sunflower and saffron thistle (Thompson et al., 2011). Soybeans can also become infected (Mathew et al., 2018). The fungus develops black pycnidia with ostiolate beaks and alpha conidia.