AI Article Synopsis

  • * Even when applied after infection, it curbs lesion growth and sporulation, showcasing its versatility in both preventative and curative treatments.
  • * The chemical alters the fungus's physical characteristics, leading to abnormal structures and disrupting the normal localization of essential components for fungal growth, though it doesn't affect tubulin orientation.

Article Abstract

Pyriofenone demonstrates outstanding efficacy in controlling powdery mildew. We investigated the impact of pyriofenone on the infection processes and cytological features of f. sp. on wheat leaves. The preventive application of pyriofenone before inoculation did not inhibit conidial germination but effectively suppressed both appressorial and haustorial formation. Notably, haustorial formation was effectively inhibited, resulting in the complete suppression of successive lesion development and sporulation. Curative application of pyriofenone after inoculation also inhibited lesion expansion and sporulation. Furthermore, it had considerable impact on the morphogenesis of powdery mildew fungus. We observed multi-formed secondary appressoria, shrunken or bifurcated hyphae, abnormal conidiophores, and clubbed conidia-like structures. Subsequently, we employed a histochemical approach to analyze the localization of essential components for the polar growth of fungal hyphae. Pyriofenone induced mislocalization of the actin cytoskeleton, β-glucan and cytoplasmic vesicles, although it did not affect tubulin orientation.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11464264PMC
http://dx.doi.org/10.1584/jpestics.D24-005DOI Listing

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