Morphological and physiological effects of lead exposure on thalli of Iridaea cordata (Turner) Bory collected in Antarctica
reserved Antarctica, even if it’s considered as the last pristine continent on Earth, is contaminated by different environmental pollutants, among which heavy metals released by human activity, cause serious changes in the aquatic environments. The concern by lead pollution is increasing due to its...
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ftunivpadodiss:oai:thesis.unipd.it:20.500.12608/52105 2023-10-25T01:32:03+02:00 Morphological and physiological effects of lead exposure on thalli of Iridaea cordata (Turner) Bory collected in Antarctica NAI, ILARIA MORO, ISABELLA 2023-09-25T07:44:28Z application/pdf https://hdl.handle.net/20.500.12608/52105 unknown Dipartimento di Biologia - DiBio MARINE BIOLOGY Laurea Magistrale (D.M. 270/2004) 2022 https://hdl.handle.net/20.500.12608/52105 Morphology Enzymatic assays Ultrastructure Metabolomics data 2023 ftunivpadodiss https://doi.org/20.500.12608/52105 2023-09-26T23:01:26Z reserved Antarctica, even if it’s considered as the last pristine continent on Earth, is contaminated by different environmental pollutants, among which heavy metals released by human activity, cause serious changes in the aquatic environments. The concern by lead pollution is increasing due to its high toxicity even at low concentrations. Lead (Pb) is one of the major contaminants arising from human activities in Antarctica and it is not an essential element for photosynthesis, but it can be easily absorbed and accumulated by photosynthetic organisms. This work is aimed to evaluate the morphological and physiological effects of lead in the Antarctic rhodophycean species: Iridaea cordata (Turner) Bory. To evaluate the toxicity of this pollutant, different analyses have been carried out, such as the evaluation of photosynthetic pigments, the determination of enzymes antioxidants (as catalase, superoxide dismutase, glutathione-S-transferase and ascorbate peroxidase), the untarged metabolomics and the analysis of morphology and ultrastructure through the use of the transmission electron microscope (TEM). The statistical method used is the one-way ANOVA test. Iridaea cordata thalli exposed in Antarctica to two different concentrations of lead showed discolouration of thallus pigmentation, decrease in photosynthetic pigments and increase in antioxidant enzymes. Other/Unknown Material Antarc* Antarctic Antarctica Padua Thesis and Dissertations Archive (Università degli Studi die Padova) Antarctic Bory ENVELOPE(40.372,40.372,64.489,64.489) The Antarctic |
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Padua Thesis and Dissertations Archive (Università degli Studi die Padova) |
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ftunivpadodiss |
language |
unknown |
topic |
Morphology Enzymatic assays Ultrastructure Metabolomics data |
spellingShingle |
Morphology Enzymatic assays Ultrastructure Metabolomics data NAI, ILARIA Morphological and physiological effects of lead exposure on thalli of Iridaea cordata (Turner) Bory collected in Antarctica |
topic_facet |
Morphology Enzymatic assays Ultrastructure Metabolomics data |
description |
reserved Antarctica, even if it’s considered as the last pristine continent on Earth, is contaminated by different environmental pollutants, among which heavy metals released by human activity, cause serious changes in the aquatic environments. The concern by lead pollution is increasing due to its high toxicity even at low concentrations. Lead (Pb) is one of the major contaminants arising from human activities in Antarctica and it is not an essential element for photosynthesis, but it can be easily absorbed and accumulated by photosynthetic organisms. This work is aimed to evaluate the morphological and physiological effects of lead in the Antarctic rhodophycean species: Iridaea cordata (Turner) Bory. To evaluate the toxicity of this pollutant, different analyses have been carried out, such as the evaluation of photosynthetic pigments, the determination of enzymes antioxidants (as catalase, superoxide dismutase, glutathione-S-transferase and ascorbate peroxidase), the untarged metabolomics and the analysis of morphology and ultrastructure through the use of the transmission electron microscope (TEM). The statistical method used is the one-way ANOVA test. Iridaea cordata thalli exposed in Antarctica to two different concentrations of lead showed discolouration of thallus pigmentation, decrease in photosynthetic pigments and increase in antioxidant enzymes. |
author2 |
MORO, ISABELLA |
author |
NAI, ILARIA |
author_facet |
NAI, ILARIA |
author_sort |
NAI, ILARIA |
title |
Morphological and physiological effects of lead exposure on thalli of Iridaea cordata (Turner) Bory collected in Antarctica |
title_short |
Morphological and physiological effects of lead exposure on thalli of Iridaea cordata (Turner) Bory collected in Antarctica |
title_full |
Morphological and physiological effects of lead exposure on thalli of Iridaea cordata (Turner) Bory collected in Antarctica |
title_fullStr |
Morphological and physiological effects of lead exposure on thalli of Iridaea cordata (Turner) Bory collected in Antarctica |
title_full_unstemmed |
Morphological and physiological effects of lead exposure on thalli of Iridaea cordata (Turner) Bory collected in Antarctica |
title_sort |
morphological and physiological effects of lead exposure on thalli of iridaea cordata (turner) bory collected in antarctica |
publishDate |
2023 |
url |
https://hdl.handle.net/20.500.12608/52105 |
long_lat |
ENVELOPE(40.372,40.372,64.489,64.489) |
geographic |
Antarctic Bory The Antarctic |
geographic_facet |
Antarctic Bory The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
Dipartimento di Biologia - DiBio MARINE BIOLOGY Laurea Magistrale (D.M. 270/2004) 2022 https://hdl.handle.net/20.500.12608/52105 |
op_doi |
https://doi.org/20.500.12608/52105 |
_version_ |
1780727615948062720 |