Chocolate Spot Disease vs Grey Mould

Botrytis fabae compared with Botrytis cinerea

Taxonomic Classification

Rank	Chocolate Spot Disease	Grey Mould
Kingdom same	Fungi (เห็ดรา)	Fungi (เห็ดรา)
Phylum same	Ascomycota (Sac Fungi)	Ascomycota (Sac Fungi)
Class same	Leotiomycetes (Leotiomycetes)	Leotiomycetes (Leotiomycetes)
Order same	Helotiales (Helotiales)	Helotiales (Helotiales)
Family same	Sclerotiniaceae	Sclerotiniaceae
Genus same	Botrytis	Botrytis
Species	Botrytis fabae	Botrytis cinerea

Evolutionary Relationship

Chocolate Spot Disease and Grey Mould share a common ancestor at the Genus level: Botrytis.

Conservation Status

Chocolate Spot Disease

NE — Not Evaluated

Grey Mould

NE — Not Evaluated

Physical Characteristics

Attribute	Chocolate Spot Disease	Grey Mould
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Chocolate Spot Disease

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Found in Sweden.

Grey Mould

Habitat

Native to Asia and Europe and South America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Brazil, Norway, Portugal, Sweden, and Taiwan.

Chocolate Spot Disease

Chocolate Spot Disease is caused by Botrytis fabae, a hemibiotroph fungal pathogen in the family Sclerotiniaceae, phylum Ascomycota. It is a highly destructive disease of faba beans (Vicia faba) and other legumes, causing characteristic chocolate-brown spots on leaves, stems, and pods — the spots that give the disease and organism its common name. The fungus spreads rapidly under cool, wet conditions and high humidity, producing massive quantities of conidiospores from infected lesions that are dispersed by rain splash and wind. In severe epidemics, entire bean crops can be defoliated, with significant yield losses of up to 100% recorded in susceptible varieties under conducive conditions. The pathogen produces both asexual conidia for rapid secondary spread and sexual apothecia from overwintering sclerotia in soil and debris, allowing it to persist between growing seasons. As a plant pathogen rather than a free-living organism, Botrytis fabae has no IUCN conservation status. Understanding its epidemiology is critical for sustainable management of faba bean production, which is an important crop globally for human consumption, animal feed, and soil nitrogen fixation. Management strategies include resistant cultivar development, fungicide application, and cultural practices to reduce humidity within crops.

Shared Countries

Both species can be found in 1 countries:

🇸🇪 Sweden