Future CO2-induced seawater acidification mediates the physiological performance of a green alga Ulva linza in different photoperiods
Photoperiods have an important impact on macroalgae living in the intertidal zone. Ocean acidification also influences the physiology of macroalgae. However, little is known about the interaction between ocean acidification and photoperiod on macroalgae. In this study, a green alga Ulva linza was cu...
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ftdoajarticles:oai:doaj.org/article:ae4da856b80a4023863fd31f5e12e487 2024-01-07T09:45:39+01:00 Future CO2-induced seawater acidification mediates the physiological performance of a green alga Ulva linza in different photoperiods Furong Yue Guang Gao Jing Ma Hailong Wu Xinshu Li Juntian Xu 2019-06-01T00:00:00Z https://doi.org/10.7717/peerj.7048 https://doaj.org/article/ae4da856b80a4023863fd31f5e12e487 EN eng PeerJ Inc. https://peerj.com/articles/7048.pdf https://peerj.com/articles/7048/ https://doaj.org/toc/2167-8359 doi:10.7717/peerj.7048 2167-8359 https://doaj.org/article/ae4da856b80a4023863fd31f5e12e487 PeerJ, Vol 7, p e7048 (2019) Growth Ocean acidification Photoperiod Photosynthesis Ulva linza Medicine R Biology (General) QH301-705.5 article 2019 ftdoajarticles https://doi.org/10.7717/peerj.7048 2023-12-10T01:53:49Z Photoperiods have an important impact on macroalgae living in the intertidal zone. Ocean acidification also influences the physiology of macroalgae. However, little is known about the interaction between ocean acidification and photoperiod on macroalgae. In this study, a green alga Ulva linza was cultured under three different photoperiods (L: D = 8:16, 12:12, 16:8) and two different CO2 levels (LC, 400 ppm; HC, 1,000 ppm) to investigate their responses. The results showed that relative growth rate of U. linza increased with extended light periods under LC but decreased at HC when exposed to the longest light period of 16 h compared to 12 h. Higher CO2 levels enhanced the relative growth rate at a L: D of 8:16, had no effect at 12:12 but reduced RGR at 16:8. At LC, the L: D of 16:8 significantly stimulated maximum quantum yield (Yield). Higher CO2 levels enhanced Yield at L: D of 12:12 and 8:16, had negative effect at 16:8. Non-photochemical quenching (NPQ) increased with increasing light period. High CO2 levels did not affect respiration rate during shorter light periods but enhanced it at a light period of 16 h. Longer light periods had negative effects on Chl a and Chl b content, and high CO2 level also inhibited the synthesis of these pigments. Our data demonstrate the interactive effects of CO2 and photoperiod on the physiological characteristics of the green tide macroalga Ulva linza and indicate that future ocean acidification may hinder the stimulatory effect of long light periods on growth of Ulva species. Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles PeerJ 7 e7048 |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
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language |
English |
topic |
Growth Ocean acidification Photoperiod Photosynthesis Ulva linza Medicine R Biology (General) QH301-705.5 |
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Growth Ocean acidification Photoperiod Photosynthesis Ulva linza Medicine R Biology (General) QH301-705.5 Furong Yue Guang Gao Jing Ma Hailong Wu Xinshu Li Juntian Xu Future CO2-induced seawater acidification mediates the physiological performance of a green alga Ulva linza in different photoperiods |
topic_facet |
Growth Ocean acidification Photoperiod Photosynthesis Ulva linza Medicine R Biology (General) QH301-705.5 |
description |
Photoperiods have an important impact on macroalgae living in the intertidal zone. Ocean acidification also influences the physiology of macroalgae. However, little is known about the interaction between ocean acidification and photoperiod on macroalgae. In this study, a green alga Ulva linza was cultured under three different photoperiods (L: D = 8:16, 12:12, 16:8) and two different CO2 levels (LC, 400 ppm; HC, 1,000 ppm) to investigate their responses. The results showed that relative growth rate of U. linza increased with extended light periods under LC but decreased at HC when exposed to the longest light period of 16 h compared to 12 h. Higher CO2 levels enhanced the relative growth rate at a L: D of 8:16, had no effect at 12:12 but reduced RGR at 16:8. At LC, the L: D of 16:8 significantly stimulated maximum quantum yield (Yield). Higher CO2 levels enhanced Yield at L: D of 12:12 and 8:16, had negative effect at 16:8. Non-photochemical quenching (NPQ) increased with increasing light period. High CO2 levels did not affect respiration rate during shorter light periods but enhanced it at a light period of 16 h. Longer light periods had negative effects on Chl a and Chl b content, and high CO2 level also inhibited the synthesis of these pigments. Our data demonstrate the interactive effects of CO2 and photoperiod on the physiological characteristics of the green tide macroalga Ulva linza and indicate that future ocean acidification may hinder the stimulatory effect of long light periods on growth of Ulva species. |
format |
Article in Journal/Newspaper |
author |
Furong Yue Guang Gao Jing Ma Hailong Wu Xinshu Li Juntian Xu |
author_facet |
Furong Yue Guang Gao Jing Ma Hailong Wu Xinshu Li Juntian Xu |
author_sort |
Furong Yue |
title |
Future CO2-induced seawater acidification mediates the physiological performance of a green alga Ulva linza in different photoperiods |
title_short |
Future CO2-induced seawater acidification mediates the physiological performance of a green alga Ulva linza in different photoperiods |
title_full |
Future CO2-induced seawater acidification mediates the physiological performance of a green alga Ulva linza in different photoperiods |
title_fullStr |
Future CO2-induced seawater acidification mediates the physiological performance of a green alga Ulva linza in different photoperiods |
title_full_unstemmed |
Future CO2-induced seawater acidification mediates the physiological performance of a green alga Ulva linza in different photoperiods |
title_sort |
future co2-induced seawater acidification mediates the physiological performance of a green alga ulva linza in different photoperiods |
publisher |
PeerJ Inc. |
publishDate |
2019 |
url |
https://doi.org/10.7717/peerj.7048 https://doaj.org/article/ae4da856b80a4023863fd31f5e12e487 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
PeerJ, Vol 7, p e7048 (2019) |
op_relation |
https://peerj.com/articles/7048.pdf https://peerj.com/articles/7048/ https://doaj.org/toc/2167-8359 doi:10.7717/peerj.7048 2167-8359 https://doaj.org/article/ae4da856b80a4023863fd31f5e12e487 |
op_doi |
https://doi.org/10.7717/peerj.7048 |
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PeerJ |
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7 |
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e7048 |
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