Combined effects of ocean acidification and phosphorus limitation on physiological characteristics of the coccolithophores <i>Emiliania huxleyi</i>

Ma Shuai; Zhang Yong; Yang Xiang; Wang Yinrui; Xie Rongrong; Li Jiabing; Zhang Hong; Han Yonghe; Zhang Yong

doi:10.12284/hyxb2023108

Volume 45 Issue 8

Aug. 2023

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Ma Shuai，Zhang Yong，Yang Xiang, et al. Combined effects of ocean acidification and phosphorus limitation on physiological characteristics of the coccolithophores Emiliania huxleyi[J]. Haiyang Xuebao，2023, 45(8)：120–129 doi: 10.12284/hyxb2023108

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Ma Shuai，Zhang Yong，Yang Xiang, et al. Combined effects of ocean acidification and phosphorus limitation on physiological characteristics of the coccolithophores Emiliania huxleyi[J]. Haiyang Xuebao，2023, 45(8)：120–129 doi: 10.12284/hyxb2023108

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Combined effects of ocean acidification and phosphorus limitation on physiological characteristics of the coccolithophores Emiliania huxleyi

doi: 10.12284/hyxb2023108

Ma Shuai^1
,,
Zhang Yong¹,
Yang Xiang¹,
Wang Yinrui¹,
Xie Rongrong^{1, 2},
Li Jiabing^{1, 2},
Zhang Hong^{1, 2},
Han Yonghe^{1, 2},
Zhang Yong^{1, 2
,
,}

1.
College of Environmental and Resource Sciences · College of Carbon Neutral Modern Industry, Fujian Normal University, Fuzhou 350117, China
2.
Fujian Key Laboratory of Pollution Control and Resource Recycling, Fujian Normal University, Fuzhou 350117, China

Received Date: 2023-01-10
Rev Recd Date: 2023-04-25

Available Online: 2023-08-31

Publish Date: 2023-08-31

Abstract

Abstract

Coccolithophores can produce particulate organic carbon (POC) via photosynthesis and synthesize particulate inorganic carbon (PIC) via calcification; they also make an important contribution to marine carbon cycle. Some studies have reported that ocean acidification generally increases POC content and decreases PIC content of coccolithophores, however, most of the studies show these results under nutrient replete conditions, and a few studies focus on the combined effects of nutrient limitation and ocean acidification on coccolithophores. In this study, we investigated the physiological responses of the coccolithophore Emiliania huxleyi to ocean acidification under dissolved inorganic phosphorus (DIP) limitation. Our data show that ocean acidification and DIP limitation act synergistically to reduce growth rate, relative photosynthetic electron transport rate and light use efficiency of photosynthetic system II of E. huxleyi. Dissolved inorganic phosphorus limitation dominantly increases cellular POC content and offsets the negative effect of ocean acidification on cellular PIC content and the ratio of PIC : POC. Our results suggest that DIP limitation changed the response trends of POC and PIC contents to ocean acidification, which indicates that the contributions of coccolithophores to marine carbon cycle are different in these ocean areas with different DIP concentrations.
- coccolithophore,
- Emiliania huxleyi,
- ocean acidification,
- phosphorus limitation,
- growth rate,
- calcification,
- photosynthesis

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References(55)

References

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