Ocean acidification significantly alters the trace element content of the kelp, Saccharina latissima.
Seaweeds are ecosystem engineers that can serve as habitat, sequester carbon, buffer ecosystems against acidification, and, in an aquaculture setting, represent an important food source. One health issue regarding the consumption of seaweeds and specifically, kelp, is the accumulation of some trace...
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ftpubmed:38564822 2024-06-02T08:12:31+00:00 Ocean acidification significantly alters the trace element content of the kelp, Saccharina latissima. Schultz, Jack Berry Gobler, Dianna L Young, Craig S Perez, Aleida Doall, Michael H Gobler, Christopher J 2024 May https://doi.org/10.1016/j.marpolbul.2024.116289 https://pubmed.ncbi.nlm.nih.gov/38564822 eng eng Elsevier Science https://doi.org/10.1016/j.marpolbul.2024.116289 https://pubmed.ncbi.nlm.nih.gov/38564822 Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved. Mar Pollut Bull ISSN:1879-3363 Volume:202 Arsenic Bromine Iodine Kelp Ocean acidification Saccharina latissima Journal Article 2024 ftpubmed https://doi.org/10.1016/j.marpolbul.2024.116289 2024-05-07T16:02:00Z Seaweeds are ecosystem engineers that can serve as habitat, sequester carbon, buffer ecosystems against acidification, and, in an aquaculture setting, represent an important food source. One health issue regarding the consumption of seaweeds and specifically, kelp, is the accumulation of some trace elements of concern within tissues. As atmospheric CO2 concentrations rise, and global oceans acidify, the concentrations of elements in seawater and kelp may change. Here, we cultivated the sugar kelp, Saccharina latissima under ambient (~400 μatm) and elevated pCO2 (600-2400 μatm) conditions and examined the accumulation of trace elements using x-ray powder diffraction, sub-micron resolution x-ray imaging, and inductively coupled plasma mass spectrometry. Exposure of S. latissima to higher concentrations of pCO2 and lower pH caused a significant increase (p < 0.05) in the iodine and arsenic content of kelp along with increased subcellular heterogeneity of these two elements as well as bromine. The iodine-to‑calcium and bromine-to‑calcium ratios of kelp also increased significantly under high CO2/low pH (p < 0.05). In contrast, high CO2/low pH significantly reduced levels of copper and cadmium in kelp tissue (p < 0.05) and there were significant inverse correlations between concentrations of pCO2 and concentrations of cadmium and copper in kelp (p < 0.05). Changes in copper and cadmium levels in kelp were counter to expected changes in their free ionic concentrations in seawater, suggesting that the influence of low pH on algal physiology was an important control on the elemental content of kelp. Collectively, these findings reveal the complex effects of ocean acidification on the elemental composition of seaweeds and indicate that the elemental content of seaweeds used as food must be carefully monitored as climate change accelerates this century. Article in Journal/Newspaper Ocean acidification PubMed Central (PMC) Marine Pollution Bulletin 202 116289 |
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Open Polar |
collection |
PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
Arsenic Bromine Iodine Kelp Ocean acidification Saccharina latissima |
spellingShingle |
Arsenic Bromine Iodine Kelp Ocean acidification Saccharina latissima Schultz, Jack Berry Gobler, Dianna L Young, Craig S Perez, Aleida Doall, Michael H Gobler, Christopher J Ocean acidification significantly alters the trace element content of the kelp, Saccharina latissima. |
topic_facet |
Arsenic Bromine Iodine Kelp Ocean acidification Saccharina latissima |
description |
Seaweeds are ecosystem engineers that can serve as habitat, sequester carbon, buffer ecosystems against acidification, and, in an aquaculture setting, represent an important food source. One health issue regarding the consumption of seaweeds and specifically, kelp, is the accumulation of some trace elements of concern within tissues. As atmospheric CO2 concentrations rise, and global oceans acidify, the concentrations of elements in seawater and kelp may change. Here, we cultivated the sugar kelp, Saccharina latissima under ambient (~400 μatm) and elevated pCO2 (600-2400 μatm) conditions and examined the accumulation of trace elements using x-ray powder diffraction, sub-micron resolution x-ray imaging, and inductively coupled plasma mass spectrometry. Exposure of S. latissima to higher concentrations of pCO2 and lower pH caused a significant increase (p < 0.05) in the iodine and arsenic content of kelp along with increased subcellular heterogeneity of these two elements as well as bromine. The iodine-to‑calcium and bromine-to‑calcium ratios of kelp also increased significantly under high CO2/low pH (p < 0.05). In contrast, high CO2/low pH significantly reduced levels of copper and cadmium in kelp tissue (p < 0.05) and there were significant inverse correlations between concentrations of pCO2 and concentrations of cadmium and copper in kelp (p < 0.05). Changes in copper and cadmium levels in kelp were counter to expected changes in their free ionic concentrations in seawater, suggesting that the influence of low pH on algal physiology was an important control on the elemental content of kelp. Collectively, these findings reveal the complex effects of ocean acidification on the elemental composition of seaweeds and indicate that the elemental content of seaweeds used as food must be carefully monitored as climate change accelerates this century. |
format |
Article in Journal/Newspaper |
author |
Schultz, Jack Berry Gobler, Dianna L Young, Craig S Perez, Aleida Doall, Michael H Gobler, Christopher J |
author_facet |
Schultz, Jack Berry Gobler, Dianna L Young, Craig S Perez, Aleida Doall, Michael H Gobler, Christopher J |
author_sort |
Schultz, Jack |
title |
Ocean acidification significantly alters the trace element content of the kelp, Saccharina latissima. |
title_short |
Ocean acidification significantly alters the trace element content of the kelp, Saccharina latissima. |
title_full |
Ocean acidification significantly alters the trace element content of the kelp, Saccharina latissima. |
title_fullStr |
Ocean acidification significantly alters the trace element content of the kelp, Saccharina latissima. |
title_full_unstemmed |
Ocean acidification significantly alters the trace element content of the kelp, Saccharina latissima. |
title_sort |
ocean acidification significantly alters the trace element content of the kelp, saccharina latissima. |
publisher |
Elsevier Science |
publishDate |
2024 |
url |
https://doi.org/10.1016/j.marpolbul.2024.116289 https://pubmed.ncbi.nlm.nih.gov/38564822 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Mar Pollut Bull ISSN:1879-3363 Volume:202 |
op_relation |
https://doi.org/10.1016/j.marpolbul.2024.116289 https://pubmed.ncbi.nlm.nih.gov/38564822 |
op_rights |
Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved. |
op_doi |
https://doi.org/10.1016/j.marpolbul.2024.116289 |
container_title |
Marine Pollution Bulletin |
container_volume |
202 |
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116289 |
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1800758968744673280 |