Genus/species: Trichothecium roseum
Classification: Ascomycete
Morphology:
- Cell: ellipsoidal, filamentous; young conidia are aseptate
- Colony: Malt agar: Flat, pink colonies
- Spore: conidiospores ellipsoidal to pyriform, 15-20 x 7.5-10 micrometers, constricted at or near the septum (Watanabe). Septum develops when young conidia mature. Initially they are aseptate.
- Zygote:
- Ascus:
- Liquid Growth:
Physiological Traits:
Produces in vitro as well as in vivo the toxic metabolites trichothecin, trichothecolone and rosenonolactone (Schwenk).
Ecological Traits:
Found in soil, decaying plant material and also found on grapevine berries particularly with high humidity or following rain; normally associated with Botrytis infection.
Role in wine:
Grapevine disease agent, cause of pink rot
Can cause a bitter taste in wines made from infected berries
Sensitivities:
- SO2:
- Sorbate:
- DMDC:
- pH:
- Acids:
- Ethanol:
- Anaerobiosis:
- Heat:
References:
- Schwenk, S. "Significance of toxic metabolites of the fungus Trichothecium roseum Link ex Fr. for viticulture." (1989): 527530.
- Watanabe, Tsueno. Pictorial atlas of soil and seed fungi.