Photoacclimation and entrainment of photosynthesis by fluctuating light varies according to genotype in Arabidopsis thaliana
Acclimation of photosynthesis to light intensity (photoacclimation) takes days to achieve and so naturally fluctuating light presents a potential challenge where leaves may be exposed to light conditions that are beyond their window of acclimation. Experiments generally have focused on unchanging li...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-03-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2023.1116367/full |
| _version_ | 1811157712430432256 |
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| author | Alexandra J. Burgess Renata Retkute Erik H. Murchie |
| author_facet | Alexandra J. Burgess Renata Retkute Erik H. Murchie |
| author_sort | Alexandra J. Burgess |
| collection | DOAJ |
| description | Acclimation of photosynthesis to light intensity (photoacclimation) takes days to achieve and so naturally fluctuating light presents a potential challenge where leaves may be exposed to light conditions that are beyond their window of acclimation. Experiments generally have focused on unchanging light with a relatively fixed combination of photosynthetic attributes to confer higher efficiency in those conditions. Here a controlled LED experiment and mathematical modelling was used to assess the acclimation potential of contrasting Arabidopsis thaliana genotypes following transfer to a controlled fluctuating light environment, designed to present frequencies and amplitudes more relevant to natural conditions. We hypothesize that acclimation of light harvesting, photosynthetic capacity and dark respiration are controlled independently. Two different ecotypes were selected, Wassilewskija-4 (Ws), Landsberg erecta (Ler) and a GPT2 knock out mutant on the Ws background (gpt2-), based on their differing abilities to undergo dynamic acclimation i.e. at the sub-cellular or chloroplastic scale. Results from gas exchange and chlorophyll content indicate that plants can independently regulate different components that could optimize photosynthesis in both high and low light; targeting light harvesting in low light and photosynthetic capacity in high light. Empirical modelling indicates that the pattern of ‘entrainment’ of photosynthetic capacity by past light history is genotype-specific. These data show flexibility of photoacclimation and variation useful for plant improvement. |
| first_indexed | 2024-04-10T05:11:58Z |
| format | Article |
| id | doaj.art-c8872eba3c6d4f7aa3424f2feef1d145 |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-04-10T05:11:58Z |
| publishDate | 2023-03-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-c8872eba3c6d4f7aa3424f2feef1d1452023-03-09T07:23:04ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2023-03-011410.3389/fpls.2023.11163671116367Photoacclimation and entrainment of photosynthesis by fluctuating light varies according to genotype in Arabidopsis thalianaAlexandra J. Burgess0Renata Retkute1Erik H. Murchie2School of Biosciences, University of Nottingham, Loughborough, United KingdomDepartment of Plant Sciences, University of Cambridge, Cambridge, United KingdomSchool of Biosciences, University of Nottingham, Loughborough, United KingdomAcclimation of photosynthesis to light intensity (photoacclimation) takes days to achieve and so naturally fluctuating light presents a potential challenge where leaves may be exposed to light conditions that are beyond their window of acclimation. Experiments generally have focused on unchanging light with a relatively fixed combination of photosynthetic attributes to confer higher efficiency in those conditions. Here a controlled LED experiment and mathematical modelling was used to assess the acclimation potential of contrasting Arabidopsis thaliana genotypes following transfer to a controlled fluctuating light environment, designed to present frequencies and amplitudes more relevant to natural conditions. We hypothesize that acclimation of light harvesting, photosynthetic capacity and dark respiration are controlled independently. Two different ecotypes were selected, Wassilewskija-4 (Ws), Landsberg erecta (Ler) and a GPT2 knock out mutant on the Ws background (gpt2-), based on their differing abilities to undergo dynamic acclimation i.e. at the sub-cellular or chloroplastic scale. Results from gas exchange and chlorophyll content indicate that plants can independently regulate different components that could optimize photosynthesis in both high and low light; targeting light harvesting in low light and photosynthetic capacity in high light. Empirical modelling indicates that the pattern of ‘entrainment’ of photosynthetic capacity by past light history is genotype-specific. These data show flexibility of photoacclimation and variation useful for plant improvement.https://www.frontiersin.org/articles/10.3389/fpls.2023.1116367/fullphotosynthesisacclimationinductionfluctuating lightentrainment (light)Arabidopsis thaliana |
| spellingShingle | Alexandra J. Burgess Renata Retkute Erik H. Murchie Photoacclimation and entrainment of photosynthesis by fluctuating light varies according to genotype in Arabidopsis thaliana Frontiers in Plant Science photosynthesis acclimation induction fluctuating light entrainment (light) Arabidopsis thaliana |
| title | Photoacclimation and entrainment of photosynthesis by fluctuating light varies according to genotype in Arabidopsis thaliana |
| title_full | Photoacclimation and entrainment of photosynthesis by fluctuating light varies according to genotype in Arabidopsis thaliana |
| title_fullStr | Photoacclimation and entrainment of photosynthesis by fluctuating light varies according to genotype in Arabidopsis thaliana |
| title_full_unstemmed | Photoacclimation and entrainment of photosynthesis by fluctuating light varies according to genotype in Arabidopsis thaliana |
| title_short | Photoacclimation and entrainment of photosynthesis by fluctuating light varies according to genotype in Arabidopsis thaliana |
| title_sort | photoacclimation and entrainment of photosynthesis by fluctuating light varies according to genotype in arabidopsis thaliana |
| topic | photosynthesis acclimation induction fluctuating light entrainment (light) Arabidopsis thaliana |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2023.1116367/full |
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