Cargando…

Potential Implications of Changing Photosynthetic End-Products of Phytoplankton Caused by Sea Ice Conditions in the Northern Chukchi Sea

The recent dramatic decline in sea ice conditions in the Arctic Ocean has led to the ecophysiological changes in the phytoplankton community. Little is currently known about how the physiological status of phytoplankton has changed under rapidly changing environmental conditions in the Arctic Ocean....

Descripción completa

Detalles Bibliográficos
Autores principales: Yun, Mi Sun, Joo, Hyoung Min, Kang, Jae Joong, Park, Jung Woo, Lee, Jae Hyung, Kang, Sung-Ho, Sun, Jun, Lee, Sang H.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6783801/
https://www.ncbi.nlm.nih.gov/pubmed/31632378
http://dx.doi.org/10.3389/fmicb.2019.02274
_version_ 1783457607567015936
author Yun, Mi Sun
Joo, Hyoung Min
Kang, Jae Joong
Park, Jung Woo
Lee, Jae Hyung
Kang, Sung-Ho
Sun, Jun
Lee, Sang H.
author_facet Yun, Mi Sun
Joo, Hyoung Min
Kang, Jae Joong
Park, Jung Woo
Lee, Jae Hyung
Kang, Sung-Ho
Sun, Jun
Lee, Sang H.
author_sort Yun, Mi Sun
collection PubMed
description The recent dramatic decline in sea ice conditions in the Arctic Ocean has led to the ecophysiological changes in the phytoplankton community. Little is currently known about how the physiological status of phytoplankton has changed under rapidly changing environmental conditions in the Arctic Ocean. Using the (13)C isotope tracer technique, the carbon allocation of phytoplankton into different photosynthetic end-products was determined in the northern Chukchi Sea on the basis of two Arctic expeditions conducted in 2011 and 2012 to identify the physiological status of phytoplankton. Lipids were the predominant photosynthetic biochemical fraction (42.5%) in 2011, whereas carbon allocation to proteins was most dominant under ice-free conditions in 2012 (47.7%). Based on a comparison of the photosynthetic carbon allocation of phytoplankton according to sea ice conditions, we found that photosynthetic carbon allocation to different macromolecular pools was significantly different depending on the sea ice conditions and that the light conditions caused by different sea ice conditions could be an important reason for the differences in carbon allocation to photosynthetic end-products. Different dominant phytoplankton groups related to size classes also could cause changes in the photosynthetic carbon allocation of phytoplankton related mainly to the lipid synthesis. Our results showed that the physiological status of Arctic phytoplankton could be changed by producing different photosynthetic end-products under current environmental changes. This change in photosynthetic end-products of phytoplankton as a basic food source could be further linked to higher trophic levels in regards to their nutritional and energetic aspects, which could have potential consequences for Arctic marine ecosystems.
format Online
Article
Text
id pubmed-6783801
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-67838012019-10-18 Potential Implications of Changing Photosynthetic End-Products of Phytoplankton Caused by Sea Ice Conditions in the Northern Chukchi Sea Yun, Mi Sun Joo, Hyoung Min Kang, Jae Joong Park, Jung Woo Lee, Jae Hyung Kang, Sung-Ho Sun, Jun Lee, Sang H. Front Microbiol Microbiology The recent dramatic decline in sea ice conditions in the Arctic Ocean has led to the ecophysiological changes in the phytoplankton community. Little is currently known about how the physiological status of phytoplankton has changed under rapidly changing environmental conditions in the Arctic Ocean. Using the (13)C isotope tracer technique, the carbon allocation of phytoplankton into different photosynthetic end-products was determined in the northern Chukchi Sea on the basis of two Arctic expeditions conducted in 2011 and 2012 to identify the physiological status of phytoplankton. Lipids were the predominant photosynthetic biochemical fraction (42.5%) in 2011, whereas carbon allocation to proteins was most dominant under ice-free conditions in 2012 (47.7%). Based on a comparison of the photosynthetic carbon allocation of phytoplankton according to sea ice conditions, we found that photosynthetic carbon allocation to different macromolecular pools was significantly different depending on the sea ice conditions and that the light conditions caused by different sea ice conditions could be an important reason for the differences in carbon allocation to photosynthetic end-products. Different dominant phytoplankton groups related to size classes also could cause changes in the photosynthetic carbon allocation of phytoplankton related mainly to the lipid synthesis. Our results showed that the physiological status of Arctic phytoplankton could be changed by producing different photosynthetic end-products under current environmental changes. This change in photosynthetic end-products of phytoplankton as a basic food source could be further linked to higher trophic levels in regards to their nutritional and energetic aspects, which could have potential consequences for Arctic marine ecosystems. Frontiers Media S.A. 2019-10-02 /pmc/articles/PMC6783801/ /pubmed/31632378 http://dx.doi.org/10.3389/fmicb.2019.02274 Text en Copyright © 2019 Yun, Joo, Kang, Park, Lee, Kang, Sun and Lee. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Microbiology
Yun, Mi Sun
Joo, Hyoung Min
Kang, Jae Joong
Park, Jung Woo
Lee, Jae Hyung
Kang, Sung-Ho
Sun, Jun
Lee, Sang H.
Potential Implications of Changing Photosynthetic End-Products of Phytoplankton Caused by Sea Ice Conditions in the Northern Chukchi Sea
title Potential Implications of Changing Photosynthetic End-Products of Phytoplankton Caused by Sea Ice Conditions in the Northern Chukchi Sea
title_full Potential Implications of Changing Photosynthetic End-Products of Phytoplankton Caused by Sea Ice Conditions in the Northern Chukchi Sea
title_fullStr Potential Implications of Changing Photosynthetic End-Products of Phytoplankton Caused by Sea Ice Conditions in the Northern Chukchi Sea
title_full_unstemmed Potential Implications of Changing Photosynthetic End-Products of Phytoplankton Caused by Sea Ice Conditions in the Northern Chukchi Sea
title_short Potential Implications of Changing Photosynthetic End-Products of Phytoplankton Caused by Sea Ice Conditions in the Northern Chukchi Sea
title_sort potential implications of changing photosynthetic end-products of phytoplankton caused by sea ice conditions in the northern chukchi sea
topic Microbiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6783801/
https://www.ncbi.nlm.nih.gov/pubmed/31632378
http://dx.doi.org/10.3389/fmicb.2019.02274
work_keys_str_mv AT yunmisun potentialimplicationsofchangingphotosyntheticendproductsofphytoplanktoncausedbyseaiceconditionsinthenorthernchukchisea
AT joohyoungmin potentialimplicationsofchangingphotosyntheticendproductsofphytoplanktoncausedbyseaiceconditionsinthenorthernchukchisea
AT kangjaejoong potentialimplicationsofchangingphotosyntheticendproductsofphytoplanktoncausedbyseaiceconditionsinthenorthernchukchisea
AT parkjungwoo potentialimplicationsofchangingphotosyntheticendproductsofphytoplanktoncausedbyseaiceconditionsinthenorthernchukchisea
AT leejaehyung potentialimplicationsofchangingphotosyntheticendproductsofphytoplanktoncausedbyseaiceconditionsinthenorthernchukchisea
AT kangsungho potentialimplicationsofchangingphotosyntheticendproductsofphytoplanktoncausedbyseaiceconditionsinthenorthernchukchisea
AT sunjun potentialimplicationsofchangingphotosyntheticendproductsofphytoplanktoncausedbyseaiceconditionsinthenorthernchukchisea
AT leesangh potentialimplicationsofchangingphotosyntheticendproductsofphytoplanktoncausedbyseaiceconditionsinthenorthernchukchisea