Contrasting thermal acclimation of leaf dark respiration and photosynthesis of Antarctic vascular plant species exposed to nocturnal warming
Leaf respiration and photosynthesis will respond differently to an increase in temperature during night, which can be more relevant in sensitive ecosystems such as Antarctica. We postulate that the plant species able to colonize the Antarctic Peninsula – Colobanthus quitensis (Kunth) Bartl. and Desc...
Published in: | Physiologia Plantarum |
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crwiley:10.1111/ppl.12881 2024-10-06T13:42:43+00:00 Contrasting thermal acclimation of leaf dark respiration and photosynthesis of Antarctic vascular plant species exposed to nocturnal warming Sanhueza, Carolina Fuentes, Francisca Cortés, Daniela Bascunan‐Godoy, Luisa Sáez, Patricia L. Bravo, León A. Cavieres, Lohengrin A. The National Fund for Scientific and Technological Development CONICYT/FONDECYT/Postdoctoral Grant CONICYT-PIA The Chilean Antarctic Institute 2019 http://dx.doi.org/10.1111/ppl.12881 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fppl.12881 https://onlinelibrary.wiley.com/doi/pdf/10.1111/ppl.12881 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/ppl.12881 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Physiologia Plantarum volume 167, issue 2, page 205-216 ISSN 0031-9317 1399-3054 journal-article 2019 crwiley https://doi.org/10.1111/ppl.12881 2024-09-19T04:18:21Z Leaf respiration and photosynthesis will respond differently to an increase in temperature during night, which can be more relevant in sensitive ecosystems such as Antarctica. We postulate that the plant species able to colonize the Antarctic Peninsula – Colobanthus quitensis (Kunth) Bartl. and Deschampsia antarctica Desv. – are able to acclimate their foliar respiration and to maintain photosynthesis under nocturnal warming to sustain a positive foliar carbon balance. We conducted a laboratory experiment to evaluate the effect of time of day (day and night) and nocturnal warming on dark respiration. Short (E 0 and Q 10 ) and long‐term acclimation of respiration, leaf carbohydrates, photosynthesis (A sat ) and foliar carbon balance (R/A) were evaluated. The results suggest that the two species have differential thermal acclimation respiration, where D. antarctica showed more thermosensitivity to short‐term changes in temperature than C. quitensis . Experimental nocturnal warming affected respiration at daytime differentially between the two species, with a significant increase of R 10 and A sat in D. antarctica , while no changes on respiration were observed in C. quitensis . Long thermal treatments of the plants indicated that nocturnal but not diurnal respiration could acclimate in both species, and to a greater extent in C. quitensis . Non‐structural carbohydrates were related with respiration in C. quitensis but not in D. antarctica , suggesting that respiration in the former species is likely controlled by total soluble sugars and starch during day and night, respectively. Finally, foliar carbon balance was differentially improved under warming conditions in Antarctic plants by different mechanisms, with C. quitensis deploying respiratory acclimation, while D. antarctica increased its A sat. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Wiley Online Library Antarctic The Antarctic Antarctic Peninsula Physiologia Plantarum 167 2 205 216 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Leaf respiration and photosynthesis will respond differently to an increase in temperature during night, which can be more relevant in sensitive ecosystems such as Antarctica. We postulate that the plant species able to colonize the Antarctic Peninsula – Colobanthus quitensis (Kunth) Bartl. and Deschampsia antarctica Desv. – are able to acclimate their foliar respiration and to maintain photosynthesis under nocturnal warming to sustain a positive foliar carbon balance. We conducted a laboratory experiment to evaluate the effect of time of day (day and night) and nocturnal warming on dark respiration. Short (E 0 and Q 10 ) and long‐term acclimation of respiration, leaf carbohydrates, photosynthesis (A sat ) and foliar carbon balance (R/A) were evaluated. The results suggest that the two species have differential thermal acclimation respiration, where D. antarctica showed more thermosensitivity to short‐term changes in temperature than C. quitensis . Experimental nocturnal warming affected respiration at daytime differentially between the two species, with a significant increase of R 10 and A sat in D. antarctica , while no changes on respiration were observed in C. quitensis . Long thermal treatments of the plants indicated that nocturnal but not diurnal respiration could acclimate in both species, and to a greater extent in C. quitensis . Non‐structural carbohydrates were related with respiration in C. quitensis but not in D. antarctica , suggesting that respiration in the former species is likely controlled by total soluble sugars and starch during day and night, respectively. Finally, foliar carbon balance was differentially improved under warming conditions in Antarctic plants by different mechanisms, with C. quitensis deploying respiratory acclimation, while D. antarctica increased its A sat. |
author2 |
The National Fund for Scientific and Technological Development CONICYT/FONDECYT/Postdoctoral Grant CONICYT-PIA The Chilean Antarctic Institute |
format |
Article in Journal/Newspaper |
author |
Sanhueza, Carolina Fuentes, Francisca Cortés, Daniela Bascunan‐Godoy, Luisa Sáez, Patricia L. Bravo, León A. Cavieres, Lohengrin A. |
spellingShingle |
Sanhueza, Carolina Fuentes, Francisca Cortés, Daniela Bascunan‐Godoy, Luisa Sáez, Patricia L. Bravo, León A. Cavieres, Lohengrin A. Contrasting thermal acclimation of leaf dark respiration and photosynthesis of Antarctic vascular plant species exposed to nocturnal warming |
author_facet |
Sanhueza, Carolina Fuentes, Francisca Cortés, Daniela Bascunan‐Godoy, Luisa Sáez, Patricia L. Bravo, León A. Cavieres, Lohengrin A. |
author_sort |
Sanhueza, Carolina |
title |
Contrasting thermal acclimation of leaf dark respiration and photosynthesis of Antarctic vascular plant species exposed to nocturnal warming |
title_short |
Contrasting thermal acclimation of leaf dark respiration and photosynthesis of Antarctic vascular plant species exposed to nocturnal warming |
title_full |
Contrasting thermal acclimation of leaf dark respiration and photosynthesis of Antarctic vascular plant species exposed to nocturnal warming |
title_fullStr |
Contrasting thermal acclimation of leaf dark respiration and photosynthesis of Antarctic vascular plant species exposed to nocturnal warming |
title_full_unstemmed |
Contrasting thermal acclimation of leaf dark respiration and photosynthesis of Antarctic vascular plant species exposed to nocturnal warming |
title_sort |
contrasting thermal acclimation of leaf dark respiration and photosynthesis of antarctic vascular plant species exposed to nocturnal warming |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1111/ppl.12881 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fppl.12881 https://onlinelibrary.wiley.com/doi/pdf/10.1111/ppl.12881 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/ppl.12881 |
geographic |
Antarctic The Antarctic Antarctic Peninsula |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica |
op_source |
Physiologia Plantarum volume 167, issue 2, page 205-216 ISSN 0031-9317 1399-3054 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/ppl.12881 |
container_title |
Physiologia Plantarum |
container_volume |
167 |
container_issue |
2 |
container_start_page |
205 |
op_container_end_page |
216 |
_version_ |
1812176824995676160 |