Pyricularia grisea

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Pyricularia grisea A) sporulation on sterile barley seed on SNA, B-G) conidiophores and conidia, H) macroconidia (arrows indicate apical marginal frill, which is a remnant of the apical mucoid cap), I) microconidia, scale bars = 10 µm (click on image to enlarge it)
Author(s): S. Klaubauf, D. Tharreau, E. Fournier, J.Z. Groenewald, P.W. Crous, R.P. de Vries and M.-H. Lebrun
Source: Studies in Mycology, 2014, 79, p. 113

Pyricularia grisea (Sacc.) Sacc. 1880

This fungus is pathogenic to grasses of the genus Digitaria. Until 2002 this name has been used for the rice blast fungus (which has a wide variety of other graminaceous hosts, e.g. causing gray leaf spot on turf grass). The confusion among plant pathologists over what is the causal agent of rice blast has persisted in the scientific literature until the study by Couch and Kohn (2002).

Synonyms:
Magnaporthe grisea