Publications by authors named "Kumaravel Nalayeni"

Life cycle of the dimorphic sugarcane smut fungi, Sporisorium scitamineum, involves recognition and mating of compatible saprophytic yeast-like haploid sporidia (MAT-1 and MAT-2) that upon fusion, develop into infective dikaryotic mycelia. Although the dimorphic transition is intrinsically linked with the pathogenicity and virulence of S. scitamineum, it has never been studied using a proteomic approach.

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Sugarcane smut caused by the basidiomycetous fungus is one of the most devastating diseases that affect sugarcane production, globally. At present, the most practical and effective management strategy for the disease is the cultivation of resistant cultivars. In this connection, a detailed understanding of the host's defense mechanism in response to smut isolates with varying degrees of virulence at the molecular level would facilitate the development of reliable and durable smut-resistant sugarcane varieties.

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Article Synopsis
  • The study investigates the life cycle and pathogenicity of Sporisorium scitamineum, the fungus responsible for smut disease in sugarcane, by using genetically modified strains that express green fluorescent protein (GFP) for better visualization.
  • Researchers isolated haploid sporidia from teliospores and confirmed opposite mating types, then successfully transformed these sporidia to track their development and colonization in sugarcane plants through microscopy.
  • The findings reveal significant fungal colonization during the disease's initial stages, leading to the characteristic formation of smut whips, thereby enhancing understanding of S. scitamineum's lifecycle and its impact on sugarcane.
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Unlabelled: is a teleomorphic, biotrophic fungus causing the globally prevalent sugarcane smut disease in sugarcane. The severity of the disease depends on two major factors, viz. degree of resistance in the host genotype and virulence level of the pathogen.

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