Abstract
HISTOPATHOLOGICAL and cytopahological studies on infectedHyocyamus muticus L. plants with a new potyvirus-Egyptianisolate with accession number KM497011 was investigated. Theinfected Hyocyamus muticus L. showing virus-like symptoms on itsleaves in the form of a net mosaic, blistering, rugosity andmalformation. Histopathology of an Egyptian potyvirus isolateinfectedHyocyamus muticus L. leaves using light microscopy showedabnormal structures of the lamina, epidermal cells, mesophyll tissueand vascular bundles compared with healthy one. Cytopathology of anEgyptian potyvirus isolate-infected Hyocyamus muticus L. leaves usingelectron microscopy showed pinwheel and scrolls inclusion bodies andabnormal cell wall thickness, nucleus, chloroplast and no clear internalstructure of mitochondria compared with healthy one. Our conclusion,the new Egyptian potyvirus isolate caused changes in the cells andtissue structure of henbane leaves as the same of other knownpotyvirus strains.
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