Exploiting heterogeneous environments: does photosynthetic acclimation optimize carbon gain in fluctuating light?

Journal of Experimental Botany
Renata RetkuteErik H Murchie

Abstract

Plants have evolved complex mechanisms to balance the efficient use of absorbed light energy in photosynthesis with the capacity to use that energy in assimilation, so avoiding potential damage from excess light. This is particularly important under natural light, which can vary according to weather, solar movement and canopy movement. Photosynthetic acclimation is the means by which plants alter their leaf composition and structure over time to enhance photosynthetic efficiency and productivity. However there is no empirical or theoretical basis for understanding how leaves track historic light levels to determine acclimation status, or whether they do this accurately. We hypothesized that in fluctuating light (varying in both intensity and frequency), the light-response characteristics of a leaf should adjust (dynamically acclimate) to maximize daily carbon gain. Using a framework of mathematical modelling based on light-response curves, we have analysed carbon-gain dynamics under various light patterns. The objective was to develop new tools to quantify the precision with which photosynthesis acclimates according to the environment in which plants exist and to test this tool on existing data. We found an inverse relationship...Continue Reading

References

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Citations

Jul 5, 2016·Journal of Plant Physiology·Anatoly A GitelsonJames S Schepers
Oct 7, 2016·Frontiers in Plant Science·Alexandra J BurgessErik H Murchie
Apr 20, 2019·Journal of Experimental Botany·Yi-Chen PaoTsu-Wei Chen
Nov 7, 2019·The Plant Journal : for Cell and Molecular Biology·Erik H Murchie, Alexander V Ruban
Oct 3, 2018·Communications Biology·Stella HubbartErik H Murchie
Apr 9, 2020·Frontiers in Plant Science·Alejandro Morales, Elias Kaiser
Dec 18, 2020·Frontiers in Plant Science·Xiaolin WangYi Shi
Dec 12, 2019·Biochimica Et Biophysica Acta. Bioenergetics·Ekaterina SukhovaVladimir Sukhov
Mar 19, 2019·Biochimica Et Biophysica Acta. Bioenergetics·Sam Wilson, Alexander V Ruban
May 4, 2021·Frontiers in Plant Science·Armida GjindaliPablo I Calzadilla
Aug 22, 2021·Plant, Cell & Environment·Alexandra J BurgessErik H Murchie

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