Dark and light green tissues of tobacco leaves systemically infected with tobacco mosaic virus
2009
Burundukova, O.L.,Institute of Biology and Soil Science, Vladivostok (Russian Federation) | Sapotsky, M.V.,Institute of Biology and Soil Science, Vladivostok (Russian Federation) | Kochetov, A.V.,Institute of Cytology and Genetics, Novosibirsk (Russian Federation) | Trifonova, E.A.,Institute of Cytology and Genetics, Novosibirsk (Russian Federation) | Malinovsky, V.I.,Institute of Biology and Soil Science, Vladivostok (Russian Federation)
There are significant changes in the structure of the upper tobacco leaves systemically infected with tobacco mosaic virus (TMV), especially in the light green tissue (LGT). Dark green areas (DGI) had intermediate status between healthy tissue and LGT. DGI contained significantly less infectious TMV and viral antigen than the LGT. The DGI, LGT and healthy tissues did not differ in the permeability of cell membranes and in the set of acidic pathogenesis-related (PR) proteins, but the total content of PR-proteins in the healthy plants was higher than in the infected ones with the DGI being intermediate between healthy tissue and LGT. The crude leaf extracts from DGI and LGT showed less total ribonuclease activity and ribonuclease isozymes in comparison with control.
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