Long-term acclimatory response to excess excitation energy: evidence for a role of hydrogen peroxide in the regulation of photosystem II antenna size

Journal of Experimental Botany
M M Borisova-MubarakshinaRoberto Bassi

Abstract

Higher plants possess the ability to trigger a long-term acclimatory response to different environmental light conditions through the regulation of the light-harvesting antenna size of photosystem II. The present study provides an insight into the molecular nature of the signal which initiates the high light-mediated response of a reduction in antenna size. Using barley (Hordeum vulgare) plants, it is shown (i) that the light-harvesting antenna size is not reduced in high light with a low hydrogen peroxide content in the leaves; and (ii) that a decrease in the antenna size is observed in low light in the presence of an elevated concentration of hydrogen peroxide in the leaves. In particular, it has been demonstrated that the ability to reduce the antenna size of photosystem II in high light is restricted to photosynthetic apparatus with a reduced level of the plastoquinone pool and with a low hydrogen peroxide content. Conversely, the reduction of antenna size in low light is induced in photosynthetic apparatus possessing elevated hydrogen peroxide even when the reduction level of the plastoquinone pool is low. Hydrogen peroxide affects the relative abundance of the antenna proteins that modulate the antenna size of photosystem...Continue Reading

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Citations

Jun 14, 2016·Biochemistry. Biokhimii︠a︡·E Yu GarnikYu M Konstantinov
Mar 4, 2017·Physiologia Plantarum·Daria V VetoshkinaMaria M Borisova-Mubarakshina
Oct 6, 2017·Journal of Experimental Botany·Ismail Turkan
Sep 5, 2018·FEBS Letters·Maria M Borisova-MubarakshinaBoris N Ivanov
Feb 2, 2019·Physiologia Plantarum·Maria M Borisova-MubarakshinaBoris N Ivanov
Jan 16, 2020·Plants·Sergey KhorobrykhEsa Tyystjärvi
Jun 20, 2020·Functional Plant Biology : FPB·Zahra MirzahosseiniMohammad R Sabzalian
Apr 2, 2020·Frontiers in Plant Science·Marina A KozulevaMaria M Borisova-Mubarakshina

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