Cargando…

Effectiveness of Light-Quality and Dark-White Growth Light Shifts in Short-Term Light Acclimation of Photosynthesis in Arabidopsis

Photosynthesis needs to run efficiently under permanently changing illumination. To achieve this, highly dynamic acclimation processes optimize photosynthetic performance under a variety of rapidly changing light conditions. Such acclimation responses are acting by a complex interplay of reversible...

Descripción completa

Detalles Bibliográficos
Autores principales: Hommel, Elisabeth, Liebers, Monique, Offermann, Sascha, Pfannschmidt, Thomas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8761940/
https://www.ncbi.nlm.nih.gov/pubmed/35046964
http://dx.doi.org/10.3389/fpls.2021.615253
_version_ 1784633648332406784
author Hommel, Elisabeth
Liebers, Monique
Offermann, Sascha
Pfannschmidt, Thomas
author_facet Hommel, Elisabeth
Liebers, Monique
Offermann, Sascha
Pfannschmidt, Thomas
author_sort Hommel, Elisabeth
collection PubMed
description Photosynthesis needs to run efficiently under permanently changing illumination. To achieve this, highly dynamic acclimation processes optimize photosynthetic performance under a variety of rapidly changing light conditions. Such acclimation responses are acting by a complex interplay of reversible molecular changes in the photosynthetic antenna or photosystem assemblies which dissipate excess energy and balance uneven excitation between the two photosystems. This includes a number of non-photochemical quenching processes including state transitions and photosystem II remodeling. In the laboratory such processes are typically studied by selective illumination set-ups. Two set-ups known to be effective in a highly similar manner are (i) light quality shifts (inducing a preferential excitation of one photosystem over the other) or (ii) dark-light shifts (inducing a general off-on switch of the light harvesting machinery). Both set-ups result in similar effects on the plastoquinone redox state, but their equivalence in induction of photosynthetic acclimation responses remained still open. Here, we present a comparative study in which dark-light and light-quality shifts were applied to samples of the same growth batches of plants. Both illumination set-ups caused comparable effects on the phosphorylation of LHCII complexes and, hence, on the performance of state transitions, but generated different effects on the degree of state transitions and the formation of PSII super-complexes. The two light set-ups, thus, are not fully equivalent in their physiological effectiveness potentially leading to different conclusions in mechanistic models of photosynthetic acclimation. Studies on the regulation of photosynthetic light acclimation, therefore, requires to regard the respective illumination test set-up as a critical parameter that needs to be considered in the discussion of mechanistic and regulatory aspects in this subject.
format Online
Article
Text
id pubmed-8761940
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-87619402022-01-18 Effectiveness of Light-Quality and Dark-White Growth Light Shifts in Short-Term Light Acclimation of Photosynthesis in Arabidopsis Hommel, Elisabeth Liebers, Monique Offermann, Sascha Pfannschmidt, Thomas Front Plant Sci Plant Science Photosynthesis needs to run efficiently under permanently changing illumination. To achieve this, highly dynamic acclimation processes optimize photosynthetic performance under a variety of rapidly changing light conditions. Such acclimation responses are acting by a complex interplay of reversible molecular changes in the photosynthetic antenna or photosystem assemblies which dissipate excess energy and balance uneven excitation between the two photosystems. This includes a number of non-photochemical quenching processes including state transitions and photosystem II remodeling. In the laboratory such processes are typically studied by selective illumination set-ups. Two set-ups known to be effective in a highly similar manner are (i) light quality shifts (inducing a preferential excitation of one photosystem over the other) or (ii) dark-light shifts (inducing a general off-on switch of the light harvesting machinery). Both set-ups result in similar effects on the plastoquinone redox state, but their equivalence in induction of photosynthetic acclimation responses remained still open. Here, we present a comparative study in which dark-light and light-quality shifts were applied to samples of the same growth batches of plants. Both illumination set-ups caused comparable effects on the phosphorylation of LHCII complexes and, hence, on the performance of state transitions, but generated different effects on the degree of state transitions and the formation of PSII super-complexes. The two light set-ups, thus, are not fully equivalent in their physiological effectiveness potentially leading to different conclusions in mechanistic models of photosynthetic acclimation. Studies on the regulation of photosynthetic light acclimation, therefore, requires to regard the respective illumination test set-up as a critical parameter that needs to be considered in the discussion of mechanistic and regulatory aspects in this subject. Frontiers Media S.A. 2022-01-03 /pmc/articles/PMC8761940/ /pubmed/35046964 http://dx.doi.org/10.3389/fpls.2021.615253 Text en Copyright © 2022 Hommel, Liebers, Offermann and Pfannschmidt. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Hommel, Elisabeth
Liebers, Monique
Offermann, Sascha
Pfannschmidt, Thomas
Effectiveness of Light-Quality and Dark-White Growth Light Shifts in Short-Term Light Acclimation of Photosynthesis in Arabidopsis
title Effectiveness of Light-Quality and Dark-White Growth Light Shifts in Short-Term Light Acclimation of Photosynthesis in Arabidopsis
title_full Effectiveness of Light-Quality and Dark-White Growth Light Shifts in Short-Term Light Acclimation of Photosynthesis in Arabidopsis
title_fullStr Effectiveness of Light-Quality and Dark-White Growth Light Shifts in Short-Term Light Acclimation of Photosynthesis in Arabidopsis
title_full_unstemmed Effectiveness of Light-Quality and Dark-White Growth Light Shifts in Short-Term Light Acclimation of Photosynthesis in Arabidopsis
title_short Effectiveness of Light-Quality and Dark-White Growth Light Shifts in Short-Term Light Acclimation of Photosynthesis in Arabidopsis
title_sort effectiveness of light-quality and dark-white growth light shifts in short-term light acclimation of photosynthesis in arabidopsis
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8761940/
https://www.ncbi.nlm.nih.gov/pubmed/35046964
http://dx.doi.org/10.3389/fpls.2021.615253
work_keys_str_mv AT hommelelisabeth effectivenessoflightqualityanddarkwhitegrowthlightshiftsinshorttermlightacclimationofphotosynthesisinarabidopsis
AT liebersmonique effectivenessoflightqualityanddarkwhitegrowthlightshiftsinshorttermlightacclimationofphotosynthesisinarabidopsis
AT offermannsascha effectivenessoflightqualityanddarkwhitegrowthlightshiftsinshorttermlightacclimationofphotosynthesisinarabidopsis
AT pfannschmidtthomas effectivenessoflightqualityanddarkwhitegrowthlightshiftsinshorttermlightacclimationofphotosynthesisinarabidopsis