Antioxidant Response during the Kinetics of Anhydrobiosis in Two Eutardigrade Species
Anhydrobiosis, a peculiar adaptive strategy existing in nature, is a reversible capability of organisms to tolerate a severe loss of their body water when their surrounding habitat is drying out. In the anhydrobiotic state, an organism lacks all dynamic features of living beings since an ongoing met...
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ftdoajarticles:oai:doaj.org/article:a994522b493048efb935dd35c74c826e 2023-05-15T13:03:41+02:00 Antioxidant Response during the Kinetics of Anhydrobiosis in Two Eutardigrade Species Ilaria Giovannini Paola Antonia Corsetto Tiziana Altiero Gigliola Montorfano Roberto Guidetti Angela Maria Rizzo Lorena Rebecchi 2022-05-01T00:00:00Z https://doi.org/10.3390/life12060817 https://doaj.org/article/a994522b493048efb935dd35c74c826e EN eng MDPI AG https://www.mdpi.com/2075-1729/12/6/817 https://doaj.org/toc/2075-1729 doi:10.3390/life12060817 2075-1729 https://doaj.org/article/a994522b493048efb935dd35c74c826e Life, Vol 12, Iss 817, p 817 (2022) anhydrobiosis desiccation stress ROS scavenging enzymes tardigrades Science Q article 2022 ftdoajarticles https://doi.org/10.3390/life12060817 2022-12-30T20:01:56Z Anhydrobiosis, a peculiar adaptive strategy existing in nature, is a reversible capability of organisms to tolerate a severe loss of their body water when their surrounding habitat is drying out. In the anhydrobiotic state, an organism lacks all dynamic features of living beings since an ongoing metabolism is absent. The depletion of water in the anhydrobiotic state increases the ionic concentration and the production of reactive oxygen species (ROS). An imbalance between the increased production of ROS and the limited action of antioxidant defences is a source of biomolecular damage and can lead to oxidative stress. The deleterious effects of oxidative stress were demonstrated in anhydrobiotic unicellular and multicellular organisms, which counteract the effects using efficient antioxidant machinery, mainly represented by ROS scavenger enzymes. To gain insights into the dynamics of antioxidant patterns during the kinetics of the anhydrobiosis of two tardigrade species, Paramacrobiotus spatialis and Acutuncus antarcticus , we investigated the activity of enzymatic antioxidants (catalase, superoxide dismutase, glutathione peroxidase, and glutathione reductase) and the amount of non-enzymatic antioxidants (glutathione) in the course of rehydration. In P. spatialis , the activity of catalase increases during dehydration and decreases during rehydration, whereas in A. antarcticus , the activity of superoxide dismutase decreases during desiccation and increases during rehydration. Genomic varieties, different habitats and geographical regions, different diets, and diverse evolutionary lineages may have led to the specialization of antioxidant strategies in the two species. Article in Journal/Newspaper Acutuncus antarcticus Antarc* antarcticus Tardigrade Directory of Open Access Journals: DOAJ Articles Life 12 6 817 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
anhydrobiosis desiccation stress ROS scavenging enzymes tardigrades Science Q |
spellingShingle |
anhydrobiosis desiccation stress ROS scavenging enzymes tardigrades Science Q Ilaria Giovannini Paola Antonia Corsetto Tiziana Altiero Gigliola Montorfano Roberto Guidetti Angela Maria Rizzo Lorena Rebecchi Antioxidant Response during the Kinetics of Anhydrobiosis in Two Eutardigrade Species |
topic_facet |
anhydrobiosis desiccation stress ROS scavenging enzymes tardigrades Science Q |
description |
Anhydrobiosis, a peculiar adaptive strategy existing in nature, is a reversible capability of organisms to tolerate a severe loss of their body water when their surrounding habitat is drying out. In the anhydrobiotic state, an organism lacks all dynamic features of living beings since an ongoing metabolism is absent. The depletion of water in the anhydrobiotic state increases the ionic concentration and the production of reactive oxygen species (ROS). An imbalance between the increased production of ROS and the limited action of antioxidant defences is a source of biomolecular damage and can lead to oxidative stress. The deleterious effects of oxidative stress were demonstrated in anhydrobiotic unicellular and multicellular organisms, which counteract the effects using efficient antioxidant machinery, mainly represented by ROS scavenger enzymes. To gain insights into the dynamics of antioxidant patterns during the kinetics of the anhydrobiosis of two tardigrade species, Paramacrobiotus spatialis and Acutuncus antarcticus , we investigated the activity of enzymatic antioxidants (catalase, superoxide dismutase, glutathione peroxidase, and glutathione reductase) and the amount of non-enzymatic antioxidants (glutathione) in the course of rehydration. In P. spatialis , the activity of catalase increases during dehydration and decreases during rehydration, whereas in A. antarcticus , the activity of superoxide dismutase decreases during desiccation and increases during rehydration. Genomic varieties, different habitats and geographical regions, different diets, and diverse evolutionary lineages may have led to the specialization of antioxidant strategies in the two species. |
format |
Article in Journal/Newspaper |
author |
Ilaria Giovannini Paola Antonia Corsetto Tiziana Altiero Gigliola Montorfano Roberto Guidetti Angela Maria Rizzo Lorena Rebecchi |
author_facet |
Ilaria Giovannini Paola Antonia Corsetto Tiziana Altiero Gigliola Montorfano Roberto Guidetti Angela Maria Rizzo Lorena Rebecchi |
author_sort |
Ilaria Giovannini |
title |
Antioxidant Response during the Kinetics of Anhydrobiosis in Two Eutardigrade Species |
title_short |
Antioxidant Response during the Kinetics of Anhydrobiosis in Two Eutardigrade Species |
title_full |
Antioxidant Response during the Kinetics of Anhydrobiosis in Two Eutardigrade Species |
title_fullStr |
Antioxidant Response during the Kinetics of Anhydrobiosis in Two Eutardigrade Species |
title_full_unstemmed |
Antioxidant Response during the Kinetics of Anhydrobiosis in Two Eutardigrade Species |
title_sort |
antioxidant response during the kinetics of anhydrobiosis in two eutardigrade species |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/life12060817 https://doaj.org/article/a994522b493048efb935dd35c74c826e |
genre |
Acutuncus antarcticus Antarc* antarcticus Tardigrade |
genre_facet |
Acutuncus antarcticus Antarc* antarcticus Tardigrade |
op_source |
Life, Vol 12, Iss 817, p 817 (2022) |
op_relation |
https://www.mdpi.com/2075-1729/12/6/817 https://doaj.org/toc/2075-1729 doi:10.3390/life12060817 2075-1729 https://doaj.org/article/a994522b493048efb935dd35c74c826e |
op_doi |
https://doi.org/10.3390/life12060817 |
container_title |
Life |
container_volume |
12 |
container_issue |
6 |
container_start_page |
817 |
_version_ |
1766342058580115456 |