Glomerella graminicola
Encyclopedia
Glomerella graminicola (anamorph Colletotrichum graminicola) is a fungus which causes anthracnose many cereal
species including maize
and wheat
.
Conidia
Phialides
Growth on PDA
Cereal
Cereals are grasses cultivated for the edible components of their grain , composed of the endosperm, germ, and bran...
species including maize
Maize
Maize known in many English-speaking countries as corn or mielie/mealie, is a grain domesticated by indigenous peoples in Mesoamerica in prehistoric times. The leafy stalk produces ears which contain seeds called kernels. Though technically a grain, maize kernels are used in cooking as a vegetable...
and wheat
Wheat
Wheat is a cereal grain, originally from the Levant region of the Near East, but now cultivated worldwide. In 2007 world production of wheat was 607 million tons, making it the third most-produced cereal after maize and rice...
.
Identification
Stromata- 70-300 μm in diameter
- Bear prominent, dark, septate spines (setae) up to 100 μm long.
Conidia
- Developing at the base of the spines
- Hyaline to pale yellow, unicellular, sickle-shaped, falcate to fusiform, tapered toward both ends
- 3-5 x 19-29 μm.
Phialides
- Unicellular, hylanine and cylindrical,
- 4-8 x 8-20 μm.
Growth on PDA
- Gray and feltlike
- Conidia and appressoria are numerous when culture are well aerated, and sclerotia sometimes occur.
- Appressoria are diagnostic: they are tawny brown, irregular-shaped in edge, prominent, and terminal on thickened hyphae.