Pseudopezicula tracheiphila

Genus/species: Pseudopezicula tracheiphila

Classification: Ascomycete

Morphology:

  • Cell: numerous, small, gelatinous apothecia containing paraphyses and asci with 4 binucleate spores. Conidiogeneous cell are monophialidic and lageniform with well-defined, but thin-walled collarettes.
  • Colony: Malt agar: the anamorph may be formed with hyaline, septate, short conidiophores that are coarser than vegetative hyphae.
  • Spore: conidia (asexual) and ascospores (sexual)
  • Zygote: primordia in apothecia
  • Ascus: apothecia
  • Liquid Growth:

Physiological Traits:

Found on grape leaves associated with vascular tissue. Initially yellow on white and bright red to reddish brown on red cultivars, a reddish brown necrosis develops in the center of the lesion (known as Rotbrenner).

Ecological Traits:

Found in warm vineyards with stony soil

Distinguishing Features:

The anamorph may be formed with hyaline, septate, short conidiosphores. It has conidiogeneous cells.

Role in wine:

Agent of grape rot

Sensitivities:

SO2:

Sorbate­­­­­:

DMDC:

pH: Yes

Acids: Yes

Ethanol:

Anaerobiosis:

Heat:

Tags

Yeast & Mold