Abstract
Apple stem pitting virus (ASPV) is a causal agent of stem pitting associated disease in pomes fruit trees. The present report focuses on a cytopathological effect of ASPV infection in a herbaceous host Nicotiana occidentalis ‘37B’. A leaf dip preparation shows predominantly basic virus particles and aggregated particles 800 nm and 3200 nm long respectively. The main cytopathological effect observed in ASPV infected N. occidentalis includes fibrous aggregates of virus particles (massive/or few), formation of membranous vesicles and proliferation of the endoplasmic reticulum.
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