Cytology of flower necrosis in Cattleyas infected by Cymbidium mosaic virus

Autor: Clark H. Livingston, F. Brent Reeves, Penelope Hanchey
Rok vydání: 1975
Předmět:
Zdroj: Physiological Plant Pathology. 6:227-231
ISSN: 0048-4059
DOI: 10.1016/0048-4059(75)90077-6
Popis: Ultrastructural changes in a non-limited virus-induced necrotic lesion are described. Necrotic and symptomless areas of a Cattleya flower infected with Cymbidium mosaic virus were examined by electron microscopy. In symptomless areas virus-like particles were aggregated in paracrystalline inclusions similar to those found in other PVX-type viral infections. Most pronounced cytopathic effects occurred in plastids bordering necrotic areas in which starch disappeared and osmiophilic globules and phytoferritin accumulated. Neither cell wall modifications nor plasmolysis were associated with the non-limited lesions in this disease.
Databáze: OpenAIRE