Wet rot symptom on beans including water-soaking on stem, and leaves and blackening o the affected plant tissue. The disease is active during extremely wet conditions.
The pathogen can infect flowers and small pods of beans. This leads to flower decay and the infected flowers typically drop from the plant. The infected pods may remain on the plant.
Infections can occur at all stages and can be noticed to have a distinctive black pins stuck which are fungal sporangia (spores) formed on sporangiophores.
The sporangia (spores) are lemon shaped formed in sporangiolum (reproductive structure). The fungal survival structures include zygospores and potentially chlamydospores.