Abstract
Effects of the infection with tobacco mosaic virus (TMV) and potato virus Y (PVY) on chloroplasts from susceptible tobacco plants were determined. Changes in ribonucleases (RNases), phosphomonoesterase (PME), phosphodiesterase (PDE), glucose-6-phosphate dehydrogenase (G6P DH), 6-phosphogluconate dehydrogenase (6PG DH), glucokinase (GK), and fructokinase (FK) activities in thylakoid/envelope and stroma fractions were studied. Slight increase in the activities of PME, PDE, G6P DH and 6PG DH of thylakoid/envelope fraction as well as of RNases, PME, PDE, G6P DH, 6PG DH, GK and FK of stroma fraction was found in chloroplasts isolated from leaf tissues infected with PVY. Infection with TMV produced higher increase in enzymes activities in chloroplasts; especially, PME, G6P DH and 6PG DH in fraction of thylakoid/envelope, and RNases, PME, PDE, G6P DH, 6PG DH, and GK in stroma fraction.
Abbreviations
- dpi:
-
day post virus inoculation
- FK:
-
fructokinase
- GK:
-
glucokinase
- G6P DH:
-
glucose-6-phosphate dehydrogenase
- PDE:
-
phosphodiesterase
- 6PG:
-
DH 6-phosphogluconate dehydrogenase
- PME:
-
phosphomonoesterase
- PVY:
-
potato virus Y
- RNases:
-
ribonucleases
- TMV:
-
tobacco mosaic virus
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This study was supported by grant No. 522/02/0708 of the Grant Agency of the Czech Republic.
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Sindelarova, M., Sindelar, L., Wilhelmova, N. et al. Changes in key enzymes of viral-RNA biosynthesis in chloroplasts from PVY and TMV infected tobacco plants. Biol Plant 49, 471–474 (2005). https://doi.org/10.1007/s10535-005-0032-7
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DOI: https://doi.org/10.1007/s10535-005-0032-7