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Electron microscopy of tobacco mosaic virus in situ


, : Electron microscopy of tobacco mosaic virus in situ. Phytopath 45(11): 603-607

Ultrathin sections of healthy plant tissue and of tissue infected with tobacco mosaic virus were examined in the electron microscope. Cell sections from infected tissues showed evidence of frequent chloroplast disintegration and the release of the grana and other chloroplast contents into the cytoplasm. Virus, visible as rod-shaped particles, was observed most frequently in regions containing these grana. This suggested an association of these chloroplast components and virus formation. No difference between the nuclei of diseased and healthy tissue was found. Bodies which have been interpreted as X-bodies were found.

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