Studies on multiplication and distribution of viruses in plants by the use of fluorescent antibody technique 4. process of systemic infection in tobacco plants nicotiana tabacum cultivar xanthi inoculated with cucumber mosaic virus

Hosokawa, D.; Mori, K.

Annals of the Phytopathological Society of Japan 49(2): 166-172


Accession: 006509863

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After the virus multiplied in the inoculated leaf, the virus antigen was first detected in the upper stem and leaves, and later in the lower stem and roots. In the early stage of long distance movement of the virus, the virus antigen was first observed in separate areas along the phloem. This mode of virus movement differed from that in the parenchyma tissue, in which the virus moved from cell to cell, suggesting that the virus may move a long distance through sieve tubes. Thereafter the virus progressively spread from the infection site in the phloem to surrounding tissues and caused systemic infection. In the upper leaves, the appearance of symptoms such as vein-clearing and yellowing followed the distribution of virus antigen in the tissues. After the virus antigen occurred throughout the tissues in a certain part of the plant, it gradually decreased.