Abstract
In arabidopsis plants, with an increase in illumination intensity during growth the extent of reduction of the plastoquinone pool in the photosynthetic electron transport chain increased, whereas the effective quantum yield of photosynthesis decreased. After 5 days of growth under high illumination intensity, these parameters in high light returned to values observed in “shade-adapted” plants in low light. During the same period, the size of the antenna decreased, correlating with a decrease in the amounts of proteins of peripheral pigment-protein complexes. It was found that the decrease in the amounts of these proteins occurred due to suppression of transcription of their genes.
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Abbreviations
- Chl:
-
chlorophyll
- LHCII:
-
the main light-harvesting complex of photosystem II
- P680:
-
electron donor in the reaction center of photosystem II
- PAR:
-
photosynthetically active radiation
- PETC:
-
photosynthetic electron transport chain
- Pheo:
-
pheophytin the electron acceptor in photosystem II
- PSI and PSII:
-
photosystems I and II
- qRT-PCR:
-
real-time reverse transcription polymerase chain reaction
- Rubisco:
-
ribulose-1,5-bisphosphate carboxylase/oxygenase
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Published in Russian in Biokhimiya, 2014, Vol. 79, No. 6, pp. 661–665.
Originally published in Biochemistry (Moscow) On-Line Papers in Press, as Manuscript BM13-340, February 23, 2014.
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Borisova-Mubarakshina, M.M., Vetoshkina, D.V., Rudenko, N.N. et al. The size of the light-harvesting antenna of higher plant photosystem ii is regulated by illumination intensity through transcription of antenna protein genes. Biochemistry Moscow 79, 520–523 (2014). https://doi.org/10.1134/S0006297914060042
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DOI: https://doi.org/10.1134/S0006297914060042