How Does Diurnal and Nocturnal Warming Affect the Freezing Resistance of Antarctic Vascular Plants?
The Antarctic Peninsula has rapidly warmed up in past decades, and global warming has exhibited an asymmetric trend; therefore, it is interesting to understand whether nocturnal or diurnal warming is the most relevant for plant cold deacclimation. This study aimed to evaluate the effect of diurnal a...
Published in: | Plants |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
MDPI AG
2023
|
Subjects: | |
Online Access: | https://doi.org/10.3390/plants12040806 https://doaj.org/article/dd8fd5d1f1174dffb66e8d8ad894d0fc |
id |
ftdoajarticles:oai:doaj.org/article:dd8fd5d1f1174dffb66e8d8ad894d0fc |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:dd8fd5d1f1174dffb66e8d8ad894d0fc 2023-05-15T14:03:42+02:00 How Does Diurnal and Nocturnal Warming Affect the Freezing Resistance of Antarctic Vascular Plants? Dariel López Carolina Sanhueza Haroldo Salvo-Garrido Luisa Bascunan-Godoy León A. Bravo 2023-02-01T00:00:00Z https://doi.org/10.3390/plants12040806 https://doaj.org/article/dd8fd5d1f1174dffb66e8d8ad894d0fc EN eng MDPI AG https://www.mdpi.com/2223-7747/12/4/806 https://doaj.org/toc/2223-7747 doi:10.3390/plants12040806 2223-7747 https://doaj.org/article/dd8fd5d1f1174dffb66e8d8ad894d0fc Plants, Vol 12, Iss 806, p 806 (2023) asymmetric warming climate change Colobanthus quitensis Deschampsia antarctica freezing resistance night temperature Botany QK1-989 article 2023 ftdoajarticles https://doi.org/10.3390/plants12040806 2023-02-26T01:28:49Z The Antarctic Peninsula has rapidly warmed up in past decades, and global warming has exhibited an asymmetric trend; therefore, it is interesting to understand whether nocturnal or diurnal warming is the most relevant for plant cold deacclimation. This study aimed to evaluate the effect of diurnal and nocturnal warming on Antarctic vascular plant’s freezing resistance under laboratory conditions. This was studied by measuring the lethal temperature for 50% of tissue (LT 50 ), ice nucleation temperature (INT), and freezing point (FP) on Deschampsia antarctica and Colobanthus quitensis plants. Additionally, soluble carbohydrates content and dehydrin levels were analyzed during nocturnal and diurnal temperatures increase. Nocturnal warming led to a 7 °C increase in the LT 50 of D. antarctica and reduced dehydrin-like peptide expression. Meanwhile, C. quitensis warmed plants reduce their LT 50 to about 3.6 °C. Both species reduce their sucrose content by more than 28% in warming treatments. Therefore, nocturnal warming leads to cold deacclimation in both plant species, while C. quitensis plants are also cold-deacclimated upon warm days. This suggests that even when the remaining freezing resistance of both species allows them to tolerate summer freezing events, C. quitensis can reach its boundaries of freezing vulnerability in the near future if warming in the Antarctic Peninsula progress. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Directory of Open Access Journals: DOAJ Articles Antarctic Antarctic Peninsula The Antarctic Plants 12 4 806 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
asymmetric warming climate change Colobanthus quitensis Deschampsia antarctica freezing resistance night temperature Botany QK1-989 |
spellingShingle |
asymmetric warming climate change Colobanthus quitensis Deschampsia antarctica freezing resistance night temperature Botany QK1-989 Dariel López Carolina Sanhueza Haroldo Salvo-Garrido Luisa Bascunan-Godoy León A. Bravo How Does Diurnal and Nocturnal Warming Affect the Freezing Resistance of Antarctic Vascular Plants? |
topic_facet |
asymmetric warming climate change Colobanthus quitensis Deschampsia antarctica freezing resistance night temperature Botany QK1-989 |
description |
The Antarctic Peninsula has rapidly warmed up in past decades, and global warming has exhibited an asymmetric trend; therefore, it is interesting to understand whether nocturnal or diurnal warming is the most relevant for plant cold deacclimation. This study aimed to evaluate the effect of diurnal and nocturnal warming on Antarctic vascular plant’s freezing resistance under laboratory conditions. This was studied by measuring the lethal temperature for 50% of tissue (LT 50 ), ice nucleation temperature (INT), and freezing point (FP) on Deschampsia antarctica and Colobanthus quitensis plants. Additionally, soluble carbohydrates content and dehydrin levels were analyzed during nocturnal and diurnal temperatures increase. Nocturnal warming led to a 7 °C increase in the LT 50 of D. antarctica and reduced dehydrin-like peptide expression. Meanwhile, C. quitensis warmed plants reduce their LT 50 to about 3.6 °C. Both species reduce their sucrose content by more than 28% in warming treatments. Therefore, nocturnal warming leads to cold deacclimation in both plant species, while C. quitensis plants are also cold-deacclimated upon warm days. This suggests that even when the remaining freezing resistance of both species allows them to tolerate summer freezing events, C. quitensis can reach its boundaries of freezing vulnerability in the near future if warming in the Antarctic Peninsula progress. |
format |
Article in Journal/Newspaper |
author |
Dariel López Carolina Sanhueza Haroldo Salvo-Garrido Luisa Bascunan-Godoy León A. Bravo |
author_facet |
Dariel López Carolina Sanhueza Haroldo Salvo-Garrido Luisa Bascunan-Godoy León A. Bravo |
author_sort |
Dariel López |
title |
How Does Diurnal and Nocturnal Warming Affect the Freezing Resistance of Antarctic Vascular Plants? |
title_short |
How Does Diurnal and Nocturnal Warming Affect the Freezing Resistance of Antarctic Vascular Plants? |
title_full |
How Does Diurnal and Nocturnal Warming Affect the Freezing Resistance of Antarctic Vascular Plants? |
title_fullStr |
How Does Diurnal and Nocturnal Warming Affect the Freezing Resistance of Antarctic Vascular Plants? |
title_full_unstemmed |
How Does Diurnal and Nocturnal Warming Affect the Freezing Resistance of Antarctic Vascular Plants? |
title_sort |
how does diurnal and nocturnal warming affect the freezing resistance of antarctic vascular plants? |
publisher |
MDPI AG |
publishDate |
2023 |
url |
https://doi.org/10.3390/plants12040806 https://doaj.org/article/dd8fd5d1f1174dffb66e8d8ad894d0fc |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica |
op_source |
Plants, Vol 12, Iss 806, p 806 (2023) |
op_relation |
https://www.mdpi.com/2223-7747/12/4/806 https://doaj.org/toc/2223-7747 doi:10.3390/plants12040806 2223-7747 https://doaj.org/article/dd8fd5d1f1174dffb66e8d8ad894d0fc |
op_doi |
https://doi.org/10.3390/plants12040806 |
container_title |
Plants |
container_volume |
12 |
container_issue |
4 |
container_start_page |
806 |
_version_ |
1766274506128621568 |