Peeling the Onion: Towards a Better Understanding of <i>Botrytis</i> Diseases of Onion

Onion is cultivated worldwide for its bulbs, but production threatened by pathogens and pests. Three distinct diseases of onion are caused species that belong to the fungal genus Botrytis. Leaf blight a well-known foliar disease B. squamosa can cause serious yield losses. Neck rot postharvest manifests in bulbs after storage associated with three species: aclada, allii, byssoidea. The symptomless infection plants field makes it difficult predict incidence neck storage, although progress on detection latent has been made. In cultivation seed production, blighting inflorescence all four onion-specific Botrytis plus broad host range pathogen cinerea. Flower reduce contaminate seed. this review, long history discussed, as well recent future approaches acquire better understanding biology ecology spp. pathogenic onion. New fundamental insights genetic, biochemical, physiological aspects Botrytis–onion interactions essential improve breeding Botrytis-resistant cultivars. [Formula: see text] Copyright © 2021 Author(s). This an open access article distributed under CC BY-NC-ND 4.0 International license .