Waterlogging induced oxidative stress and the mortality of the Antarctic plant, Deschampsia antarctica
We investigated the mortality and the oxidative damages of Deschampsia antarctica in response to waterlogging stress. In field, we compared the changes in the density of D. antarctica tuft at the two different sites over 3years. The soil water content at site 2 was 6-fold higher than that of site 1,...
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BioMed Central
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ftseoulnuniv:oai:s-space.snu.ac.kr:10371/162600 2023-06-18T03:37:58+02:00 Waterlogging induced oxidative stress and the mortality of the Antarctic plant, Deschampsia antarctica Park, Jeong Soo Lee, Eun Ju 박정수 이은수 2019-07-30 https://hdl.handle.net/10371/162600 en eng BioMed Central Journal of Ecology and Environment, 43(1):29 2288-1220 https://hdl.handle.net/10371/162600 The Author(s) Waterlogging Deschampsia antarctica Antarctica Flooding Reactive oxygen species Antioxidant enzyme activity 2019 ftseoulnuniv 2023-06-02T00:37:41Z We investigated the mortality and the oxidative damages of Deschampsia antarctica in response to waterlogging stress. In field, we compared the changes in the density of D. antarctica tuft at the two different sites over 3years. The soil water content at site 2 was 6-fold higher than that of site 1, and the density of D. antarctica tuft decreased significantly by 55.4% at site 2 for 3years, but there was no significant change at site 1. Experimental results in growth chamber showed that the H2O2 and malondialdehyde content increased under root-flooding treatment (hypoxic conditions—deficiency of O2), but any significant change was not perceptible under the shoot-flooding treatment (anoxic condition—absence of O2). However, total chlorophyll, soluble sugar, protein content, and phenolic compound decreased under the shoot-flooding treatment. In addition, the catalase activity increased significantly on the 1st day of flooding. These results indicate that hypoxic conditions may lead to the overproduction of reactive oxygen species, and anoxic conditions can deplete primary metabolites such as sugars and protein in the leaf tissues of D. antarctica. Under present warming trend in Antarctic Peninsula, D. antarctica tuft growing near the shoreline might more frequently experience flooding due to glacier melting and inundation of seawater, which can enhance the risk of this plant mortality. This research was supported by the Korea Polar Research Institute grant Status and Changes of Polar Indicator Species and Coastal/Terrestrial Ecosystems (PE10040) and by National Institute of Ecology grant Ecological Studies of Alien Species (NIE-A-2019-08). Other/Unknown Material Antarc* Antarctic Antarctic Peninsula Antarctica Korea Polar Research Institute Seoul National University: S-Space Antarctic Antarctic Peninsula The Antarctic |
institution |
Open Polar |
collection |
Seoul National University: S-Space |
op_collection_id |
ftseoulnuniv |
language |
English |
topic |
Waterlogging Deschampsia antarctica Antarctica Flooding Reactive oxygen species Antioxidant enzyme activity |
spellingShingle |
Waterlogging Deschampsia antarctica Antarctica Flooding Reactive oxygen species Antioxidant enzyme activity Park, Jeong Soo Lee, Eun Ju Waterlogging induced oxidative stress and the mortality of the Antarctic plant, Deschampsia antarctica |
topic_facet |
Waterlogging Deschampsia antarctica Antarctica Flooding Reactive oxygen species Antioxidant enzyme activity |
description |
We investigated the mortality and the oxidative damages of Deschampsia antarctica in response to waterlogging stress. In field, we compared the changes in the density of D. antarctica tuft at the two different sites over 3years. The soil water content at site 2 was 6-fold higher than that of site 1, and the density of D. antarctica tuft decreased significantly by 55.4% at site 2 for 3years, but there was no significant change at site 1. Experimental results in growth chamber showed that the H2O2 and malondialdehyde content increased under root-flooding treatment (hypoxic conditions—deficiency of O2), but any significant change was not perceptible under the shoot-flooding treatment (anoxic condition—absence of O2). However, total chlorophyll, soluble sugar, protein content, and phenolic compound decreased under the shoot-flooding treatment. In addition, the catalase activity increased significantly on the 1st day of flooding. These results indicate that hypoxic conditions may lead to the overproduction of reactive oxygen species, and anoxic conditions can deplete primary metabolites such as sugars and protein in the leaf tissues of D. antarctica. Under present warming trend in Antarctic Peninsula, D. antarctica tuft growing near the shoreline might more frequently experience flooding due to glacier melting and inundation of seawater, which can enhance the risk of this plant mortality. This research was supported by the Korea Polar Research Institute grant Status and Changes of Polar Indicator Species and Coastal/Terrestrial Ecosystems (PE10040) and by National Institute of Ecology grant Ecological Studies of Alien Species (NIE-A-2019-08). |
author2 |
박정수 이은수 |
author |
Park, Jeong Soo Lee, Eun Ju |
author_facet |
Park, Jeong Soo Lee, Eun Ju |
author_sort |
Park, Jeong Soo |
title |
Waterlogging induced oxidative stress and the mortality of the Antarctic plant, Deschampsia antarctica |
title_short |
Waterlogging induced oxidative stress and the mortality of the Antarctic plant, Deschampsia antarctica |
title_full |
Waterlogging induced oxidative stress and the mortality of the Antarctic plant, Deschampsia antarctica |
title_fullStr |
Waterlogging induced oxidative stress and the mortality of the Antarctic plant, Deschampsia antarctica |
title_full_unstemmed |
Waterlogging induced oxidative stress and the mortality of the Antarctic plant, Deschampsia antarctica |
title_sort |
waterlogging induced oxidative stress and the mortality of the antarctic plant, deschampsia antarctica |
publisher |
BioMed Central |
publishDate |
2019 |
url |
https://hdl.handle.net/10371/162600 |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Korea Polar Research Institute |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Korea Polar Research Institute |
op_relation |
Journal of Ecology and Environment, 43(1):29 2288-1220 https://hdl.handle.net/10371/162600 |
op_rights |
The Author(s) |
_version_ |
1769010773257879552 |