Alternaria blight of oilseed brassicas: A review on management strategies through conventional, non-conventional and biotechnological approaches

Abstract

Oilseed Brassicas are contributing approximately 28 percent of the India’s total oilseed production. This crop is gaining wide acceptance among t he f a rme r s b e ca u s e of adaptability for both irrigated as well as rainfed areas and suitability for sole as well as mixed cropping. Besides, it offers higher return with low cost of production and low water requirement. The production and productivity of oilseed brassicas are comparatively lower as compared to the world average due to the biotic and abiotic constraints. Among the biotic constraints, alternaria blight disease caused by Alternaria spp. has been reported from all the continents of the world, causing up to 70% yield losses in India. This disease was found on leaves, stems and siliquae and dark spots on the leaves and siliquae reduce the photosynthetic capacity and induce immature ripening, which causes reduced amount of quality seed and oil content. The severity of this disease depends upon weather conditions, varieties, age of host plants and virulence of the pathogens. Efforts are being done throughout the world for the management of alternaria blight of rapeseed-mustard. This paper comprehensively reviews the research of alternaria blight of rapeseed-mustard with special reference to management strategies through conventional, non conventional and biotechnological approaches that leads to planning the future research. The present scenario demands the traditional and modern biotechnological techniques bringing together for integrated disease management according to the need and availability at farmers level for sustainable management of alternaria blight disease of oilseed brassicas.

Comparative transcriptome profiling reveals differential defense responses among Alternaria brassicicola resistant Sinapis alba and susceptible Brassica rapa

“…The disease results in yield losses of up to 50% and is becoming a major threat to Brassica species ( Jyoti et al., 2021 ). In India, it has been reported to cause losses of up to 70% ( Kumar et al., 2016 ). Alternaria blight is mainly caused by two necrotrophic fungi, Alternaria brassicicola and A. brassicae , that are mostly found co-inhabiting the same plant.…”

Trends and Perspectives for the Use of Crop Wild Relatives in Crop Breeding

“…The disease results in yield losses of up to 50% and is becoming a major threat to Brassica species . In India, it has been reported to cause losses of up to 70% (Kumar et al, 2016). Alternaria blight is mainly caused by two necrotrophic fungi, Alternaria brassicicola and A. brassicae, that are mostly found coinhabiting the same plant.…”

Efficacy of Newer Molecules of Fungicides against Alternaria brassicae in vitro

“…This crop suffers from devastating diseases such as Alternaria blight, white rust, downy mildew, powdery mildew, bacterial rot and wilt (Kolte, 1985 andSingh et al, 2019). Among the diseases Alternaria blight caused by Alternaria brassicae (Berk) Sacc, are also widely prevalent diseases in Eastern Uttar Pradesh (Singh and Singh (2005) and Kumar et. al.…”