What is the impact of the fungus Alternaria brassicae on crops?

Asked on 14.12.2018 in All Questions.
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Black spot disease of some brassica crops like broccoli, oilseed rape, and cabbage is caused by the fungus Alternaria brassicae. This facultative parasite colonizes susceptible hosts as well as dead plant material causing host-specific toxins. This disease produces a considerable reduction of both yield and seed quality. A. brassicae is the prime causative agent of Alternaria blight disease, which affects most brassica crops globally, causing economic losses with no proven source of transferrable resistance in any of its hosts. In tropical regions, this pathogen is most destructive in the wet season. The report of Giri suggested that...
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