alexa Photosynthesis and Activity of Phosphoenolpyruvate carboxylase in Nicotiana tabacum L. Leaves Infected by Potato virus A and Potato virus Y
Biochemistry

Biochemistry

Biochemistry & Analytical Biochemistry

Author(s): H Rylav, K Mller, Semordov, H Synkov, N eovsk

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The influence of viral infection caused by two different potyviruses, Potato virus Y (PVY) and Potato virus A (PVA) on plant metabolism and photosynthetic apparatus of Nicotiana tabacum L. cv. Samsun and cv. Petit Havana SR1 was studied. The main stress was focused on the activities of phosphoenolpyruvate carboxylase (PEPC), NADP-malic enzyme (NADP-ME), and pyruvate phosphate dikinase (PPDK). The analysis of the presence of viral proteins, enzyme activities, and different photosynthetic parameters showed the time dependent progress of viral infection and NADP-ME and PEPC activities. PVY caused significant response, while PVA affected both tobacco cultivars only slightly. Viral infection, namely PVY, affected more negatively photosynthetic apparatus of cv. Petit Havana SR1 than cv. Samsun.

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This article was published in Photosynthetica and referenced in Biochemistry & Analytical Biochemistry

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