Gaeumannomyces graminis

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Gaeumannomyces graminis A–C) conidiophores, conidiogenous cells and conidia, D) conidia, scale bars: A–D = 10 μm (click on image to enlarge it)
Author(s): M. Hernández-Restrepo1, J.Z. Groenewald, M.L. Elliott, G. Canning, V.E. McMillan and P.W. Crous
Source: Studies in Mycology (2016) 83 (1) p. 39

Gaeumannomyces graminis (Sacc.) von Arx et D. Olivier 1952

This fungus has been long regarded as an important soil-borne pathogen of cereals, causing the take-all disease of wheat as well as diseases on other cereals and grasses. The type was collected from Cynodon or Agropyron and several subspecies were described. Following a taxonomic revision, two important subspecies have been found to be phylogenetically distinct from G. graminis and have been assigned to separate species:
For Gaeumannomyces graminis var. avenae which infects oats and turfgrasses see Gaeumannomyces avenae.
For Gaeumannomyces graminis var. tritici which attacks wheat (take-all disease of wheat), barley and other grasses see Gaeumannomyces tritici.

Ophiobolus graminis

Note on the literature database:
In the literature database displayed at the top left of this page, all records on wheat and oats have been transferred to the above 2 species.