Interactive effects of high irradiance and moderate heat on photosynthesis, pigments, and tocopherol in the tree-fern Dicksonia antarctica
Effects of high irradiance and moderate heat on photosynthesis of the tree-fern Dicksonia Antarctica (Labill., Dicksoniaceae) were examined in a climate chamber under two contrasting irradiance regimes (900 and 170 mmol photonsm–2 s–1) and three sequential temperature treatments (15_C; 35_C; back to...
Published in: | Functional Plant Biology |
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Language: | English |
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Online Access: | http://prodinra.inra.fr/ft/09939361-E08E-4AC3-8ABB-49246B8DD814 http://prodinra.inra.fr/record/29686 https://doi.org/10.1071/FP09098 |
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ftinraparis:oai:prodinra.inra.fr:29686 2023-05-15T13:45:36+02:00 Interactive effects of high irradiance and moderate heat on photosynthesis, pigments, and tocopherol in the tree-fern Dicksonia antarctica Volkova, Liubov Tausz, Michael Bennett, Lauren T. Dreyer, Erwin 2009 application/pdf http://prodinra.inra.fr/ft/09939361-E08E-4AC3-8ABB-49246B8DD814 http://prodinra.inra.fr/record/29686 https://doi.org/10.1071/FP09098 eng eng https://creativecommons.org/licenses/by-sa/3.0/ CC-BY-SA Functional Plant Biology 12 (36), 1046-1056. (2009) Biologie végétale Vegetal Biology PHOTOSYSTEM-II;RIBULOSE-1,5-BISPHOSPHATE CARBOXYLASE/OXYGENASE;CHLOROPHYLL FLUORESCENCE;TEMPERATURE RESPONSE;LIGHT-INTENSITY;LEAVES;STRESS;PLANTS;CAROTENOIDS;ACCLIMATION;A-TOCOPHEROLS;B-CAROTENE;CRITICAL TEMPERATURE;DE-EPOXIDATION STATE;JMAX;LIGHT REGIME;LUTEIN;OSMOLALITY;PHOTOINHIBITION VCMAX TEMPERATURE;XANTHOPHYLL PIGMENTS forêt arbre forestier climat température ARTICLE 2009 ftinraparis https://doi.org/10.1071/FP09098 2019-03-19T23:25:07Z Effects of high irradiance and moderate heat on photosynthesis of the tree-fern Dicksonia Antarctica (Labill., Dicksoniaceae) were examined in a climate chamber under two contrasting irradiance regimes (900 and 170 mmol photonsm–2 s–1) and three sequential temperature treatments (15_C; 35_C; back to 15_C). High irradiance led to decline in predawn quantum yield of photochemistry, Fv/Fm (0.73), maximal Rubisco activity (Vcmax; from 37 to 29 mmolm–2s–1), and electron transport capacity (Jmax; from 115 to 67 mmolm–2 s–1). Temperature increase to 35_C resulted in further decreases in Fv/Fm (0.45) and in chlorophyll bleaching of high irradiance plants, while Vcmax and Jmax were not affected. Critical temperature for thylakoid stability (Tc) of D. antarctica was comparable with other higher plants (c. 47_C), and increases of Tc with air temperature were greater in high irradiance plants. Increased Tc was not associated with accumulation of osmotica or zeaxanthin formation. High irradiance increased the xanthophyll cycle pigment pool (V+A+Z, 91 v. 48 mmol mol–1 chlorophyll–1), de-epoxidation state (56% v. 4%), and a-tocopherol. Temperature increase to 35_C had no effect on V+A+Z and de-epoxidation state in both light regimes, while lutein, b-carotene and a-tocopherols increased, potentially contributing to increased membrane stability under high irradiance. Article in Journal/Newspaper Antarc* Antarctica Institut National de la Recherche Agronomique: ProdINRA Functional Plant Biology 36 12 1046 |
institution |
Open Polar |
collection |
Institut National de la Recherche Agronomique: ProdINRA |
op_collection_id |
ftinraparis |
language |
English |
topic |
Biologie végétale Vegetal Biology PHOTOSYSTEM-II;RIBULOSE-1,5-BISPHOSPHATE CARBOXYLASE/OXYGENASE;CHLOROPHYLL FLUORESCENCE;TEMPERATURE RESPONSE;LIGHT-INTENSITY;LEAVES;STRESS;PLANTS;CAROTENOIDS;ACCLIMATION;A-TOCOPHEROLS;B-CAROTENE;CRITICAL TEMPERATURE;DE-EPOXIDATION STATE;JMAX;LIGHT REGIME;LUTEIN;OSMOLALITY;PHOTOINHIBITION VCMAX TEMPERATURE;XANTHOPHYLL PIGMENTS forêt arbre forestier climat température |
spellingShingle |
Biologie végétale Vegetal Biology PHOTOSYSTEM-II;RIBULOSE-1,5-BISPHOSPHATE CARBOXYLASE/OXYGENASE;CHLOROPHYLL FLUORESCENCE;TEMPERATURE RESPONSE;LIGHT-INTENSITY;LEAVES;STRESS;PLANTS;CAROTENOIDS;ACCLIMATION;A-TOCOPHEROLS;B-CAROTENE;CRITICAL TEMPERATURE;DE-EPOXIDATION STATE;JMAX;LIGHT REGIME;LUTEIN;OSMOLALITY;PHOTOINHIBITION VCMAX TEMPERATURE;XANTHOPHYLL PIGMENTS forêt arbre forestier climat température Volkova, Liubov Tausz, Michael Bennett, Lauren T. Dreyer, Erwin Interactive effects of high irradiance and moderate heat on photosynthesis, pigments, and tocopherol in the tree-fern Dicksonia antarctica |
topic_facet |
Biologie végétale Vegetal Biology PHOTOSYSTEM-II;RIBULOSE-1,5-BISPHOSPHATE CARBOXYLASE/OXYGENASE;CHLOROPHYLL FLUORESCENCE;TEMPERATURE RESPONSE;LIGHT-INTENSITY;LEAVES;STRESS;PLANTS;CAROTENOIDS;ACCLIMATION;A-TOCOPHEROLS;B-CAROTENE;CRITICAL TEMPERATURE;DE-EPOXIDATION STATE;JMAX;LIGHT REGIME;LUTEIN;OSMOLALITY;PHOTOINHIBITION VCMAX TEMPERATURE;XANTHOPHYLL PIGMENTS forêt arbre forestier climat température |
description |
Effects of high irradiance and moderate heat on photosynthesis of the tree-fern Dicksonia Antarctica (Labill., Dicksoniaceae) were examined in a climate chamber under two contrasting irradiance regimes (900 and 170 mmol photonsm–2 s–1) and three sequential temperature treatments (15_C; 35_C; back to 15_C). High irradiance led to decline in predawn quantum yield of photochemistry, Fv/Fm (0.73), maximal Rubisco activity (Vcmax; from 37 to 29 mmolm–2s–1), and electron transport capacity (Jmax; from 115 to 67 mmolm–2 s–1). Temperature increase to 35_C resulted in further decreases in Fv/Fm (0.45) and in chlorophyll bleaching of high irradiance plants, while Vcmax and Jmax were not affected. Critical temperature for thylakoid stability (Tc) of D. antarctica was comparable with other higher plants (c. 47_C), and increases of Tc with air temperature were greater in high irradiance plants. Increased Tc was not associated with accumulation of osmotica or zeaxanthin formation. High irradiance increased the xanthophyll cycle pigment pool (V+A+Z, 91 v. 48 mmol mol–1 chlorophyll–1), de-epoxidation state (56% v. 4%), and a-tocopherol. Temperature increase to 35_C had no effect on V+A+Z and de-epoxidation state in both light regimes, while lutein, b-carotene and a-tocopherols increased, potentially contributing to increased membrane stability under high irradiance. |
format |
Article in Journal/Newspaper |
author |
Volkova, Liubov Tausz, Michael Bennett, Lauren T. Dreyer, Erwin |
author_facet |
Volkova, Liubov Tausz, Michael Bennett, Lauren T. Dreyer, Erwin |
author_sort |
Volkova, Liubov |
title |
Interactive effects of high irradiance and moderate heat on photosynthesis, pigments, and tocopherol in the tree-fern Dicksonia antarctica |
title_short |
Interactive effects of high irradiance and moderate heat on photosynthesis, pigments, and tocopherol in the tree-fern Dicksonia antarctica |
title_full |
Interactive effects of high irradiance and moderate heat on photosynthesis, pigments, and tocopherol in the tree-fern Dicksonia antarctica |
title_fullStr |
Interactive effects of high irradiance and moderate heat on photosynthesis, pigments, and tocopherol in the tree-fern Dicksonia antarctica |
title_full_unstemmed |
Interactive effects of high irradiance and moderate heat on photosynthesis, pigments, and tocopherol in the tree-fern Dicksonia antarctica |
title_sort |
interactive effects of high irradiance and moderate heat on photosynthesis, pigments, and tocopherol in the tree-fern dicksonia antarctica |
publishDate |
2009 |
url |
http://prodinra.inra.fr/ft/09939361-E08E-4AC3-8ABB-49246B8DD814 http://prodinra.inra.fr/record/29686 https://doi.org/10.1071/FP09098 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Functional Plant Biology 12 (36), 1046-1056. (2009) |
op_rights |
https://creativecommons.org/licenses/by-sa/3.0/ |
op_rightsnorm |
CC-BY-SA |
op_doi |
https://doi.org/10.1071/FP09098 |
container_title |
Functional Plant Biology |
container_volume |
36 |
container_issue |
12 |
container_start_page |
1046 |
_version_ |
1766228390077005824 |