Matthews, Jack SA and Vialet-Chabrand, Silvere RM and Lawson, Tracy (2018) Acclimation to fluctuating light impacts the rapidity and diurnal rhythm of stomatal conductance. Plant Physiology, 176 (3). pp. 1939-1951. DOI https://doi.org/10.1104/pp.17.01809
Matthews, Jack SA and Vialet-Chabrand, Silvere RM and Lawson, Tracy (2018) Acclimation to fluctuating light impacts the rapidity and diurnal rhythm of stomatal conductance. Plant Physiology, 176 (3). pp. 1939-1951. DOI https://doi.org/10.1104/pp.17.01809
Matthews, Jack SA and Vialet-Chabrand, Silvere RM and Lawson, Tracy (2018) Acclimation to fluctuating light impacts the rapidity and diurnal rhythm of stomatal conductance. Plant Physiology, 176 (3). pp. 1939-1951. DOI https://doi.org/10.1104/pp.17.01809
Abstract
Plant acclimation to growth light environment has been studied extensively, however, the majority of these studies have focused on light intensity and photo-acclimation, with few studies exploring the impact of dynamic growth light on stomatal acclimation and behavior. In order to assess the impact of growth light regime on stomatal acclimation, we grew plants in three different lighting regimes (with the same average daily intensity); fluctuating with a fixed pattern of light, fluctuating with a randomized pattern of light (sinusoidal), and non-fluctuating (square wave), to assess the effect of light regime dynamics on gas exchange. We demonstrated that gs acclimation is influenced by both intensity and light pattern, modifying the stomatal kinetics at different times of the day resulting in differences in the rapidity and magnitude of the gs response. We also describe and quantify response to an internal signal that uncouples variation in A and gs over the majority of the diurnal period, and represents 25% of the total diurnal gs. This gs response can be characterized by a Gaussian element and when incorporated into the widely used Ball-Berry Model greatly improved the prediction of gs in a dynamic environment. From these findings we conclude that acclimation of gs to growth light could be an important strategy for maintaining carbon fixation and overall plant water status, and should be considered when inferring responses in the field from laboratory based experiments.
Item Type: | Article |
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Uncontrolled Keywords: | Arabidopsis; Environment; Acclimatization; Photosynthesis; Circadian Rhythm; Photons; Light; Models, Biological; Time Factors; Plant Stomata |
Subjects: | Q Science > QH Natural history > QH301 Biology |
Divisions: | Faculty of Science and Health Faculty of Science and Health > Life Sciences, School of |
SWORD Depositor: | Unnamed user with email elements@essex.ac.uk |
Depositing User: | Unnamed user with email elements@essex.ac.uk |
Date Deposited: | 15 May 2018 13:28 |
Last Modified: | 30 Oct 2024 17:21 |
URI: | http://repository.essex.ac.uk/id/eprint/21754 |
Available files
Filename: 1939.full.pdf
Licence: Creative Commons: Attribution 3.0