Alternaria brassicicola
| Species: | Alternaria brassicicola (Schweinitz) Wiltshire |
| Original Reference: | Schweinitz, L. D. 1832. Helminthosporium brassicicola ('brassicola'). Transactions of the American Philosophical Society, 4: 279. |
| Additional References: |
Simmons, E. G. 1995. Alternaria themes and variations (112-144). Mycotaxon 55: 123-129. Wiltshire, S. P. 1947. Mycol. Pap. 20: 8. |
| Conidia: | (on PCA) mature conidia typically 10-60 x 6-17 µm, no true beak, narrow to broad ovoid and ellipsoid, mostly smooth spore walls but can be punctulate, medium yellowish to reddish brown, transepta typically dark pigmented and constricted, 1-7 transepta, 0-2 longisepta, in aggregates of branching chains comprised of 50-60 or more conidia. |
| Conidiophore: | (on PCA) 15-65 x 5-6 µm, arise directly from agar surface, dilute tan, grow in close proximity to one another, apical secondary condiophore, short (5 x 5 µm). |
| Disease: | Alternaria diseases of Crucifers: black spot (leaf, stem, or pod spots) |
| Host: | Brassicaceous hosts, Artemisia sp., Thymus vularis L., Phaseolus coccineus L., species of Linum, Papaver, Phaseolus, and Scorzonera. |
| Additonal references: | http://www.apsnet.org/online/common/toc.asp |
| Alternaria species | Alternaria Online | Plant pathology | Agricultural and Life Sciences |