Journal of Tropical Oceanography ›› 2022, Vol. 41 ›› Issue (3): 101-110.doi: 10.11978/2021105CSTR: 32234.14.2021105
• Marine Biology • Previous Articles Next Articles
Comparative study on photophysiology of four macroalgae from the Zhongsha Atoll, with special reference to the effects of temperature rise*
LI Gang1,2,3,4(
), WAN Mingyue1,2,3,4, SHI Xiaohan5, QIN Geng1,2,4, MAI Guangming1,2,3,4, HUANG Liangmin1,4, TAN Yehui1,2,4, ZOU Dinghui5
- 1. Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510530, China
2. Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
3. Key Laboratory of Science and Technology on Operational Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
4. University of Chinese Academy of Sciences, Beijing 100049, China
5. School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
-
Received:2021-08-18Revised:2021-10-08Published:2021-10-12 -
Contact:LI Gang E-mail:ligang@scsio.ac.cn -
Supported by:National Science & Technology Fundamental Resources Investigation Program(2018FY100104);National Natural Science Foundation(41890853);Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)(GML2019ZD0407);Natural Science Foundation of Guangdong Province(2022A1515011461);Science and Technology Planning Project of Guangdong Province(2017B020217002)
CLC Number:
- Q945
Cite this article
LI Gang, WAN Mingyue, SHI Xiaohan, QIN Geng, MAI Guangming, HUANG Liangmin, TAN Yehui, ZOU Dinghui. Comparative study on photophysiology of four macroalgae from the Zhongsha Atoll, with special reference to the effects of temperature rise*[J].Journal of Tropical Oceanography, 2022, 41(3): 101-110.
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Fig. 1
Daily variation of photosynthetically active radiation (PAR, µmol photons·m-2·s-1) received by macroalgae in field condition."
Fig. 1
Tab. 1
Pigments of chlorophyll a (Chl a), carotenoids (Car), phycoerythrin (PE), phycocyanin (PC), and soluble proteins (SP) contents (mg·g-1 FW) in G. ellipitica, L. samaensis, U. flabellum, and H. discoidea. Shown are the mean and standard deviation of three or four independent measurements (n=3 or 4)"
| 色素 | 蛋白含量/(mg·g-1 FW) | |||
|---|---|---|---|---|
| 厚膜藻G. ellipitica | 粉枝藻L. samaensis | 钙扇藻U. flabellum | 仙掌藻H. discoidea | |
| 叶绿素a(Chl a) | 0.03±0.006a | 0.08±0.005a | 0.36±0.068b | 0.16±0.034c |
| 类胡萝卜素(Car) | 0.004±0.001a | 0.034±0.005b | 0.26±0.056c | 0.14±0.029d |
| 藻红蛋白(PE) | 0.65±0.021a | 0.010±0.008b | — | — |
| 藻蓝蛋白(PC) | 0.004±0.003a | 0.009±0.001b | — | — |
| 可溶性蛋白(SP) | 1.12±0.087a | 1.25±0.383a | 5.17±0.533b | 1.28±0.197a |
Tab. 1
Fig. 2
Photosynthetic oxygen evolution rate (µmol O2·g-1 FW·h-1) versus irradiance (µmol·photons·m-2·s-1) (P vs. E) curves under ambient (29.5℃) and elevated temperatures (33.5℃) for (a) G. ellipitica, (b) L. samaensis, (c) U. flabellum, and (d) H. discoidea. Symbols show the averaged values of three or four independent measurements; vertical bars indicate standard deviation (n=3 or 4), often fall within the symbols"
Fig. 2
Fig. 3
P vs. E curve-derived photosynthetic parameters under ambient (29.5℃) and elevated (33.5℃) temperatures for G. ellipitica, L. samaensis, U. flabellum, and H. discoidea. The letter above each bar indicates significant difference (P<0.05)"
Fig. 3
Fig. 4
Light compensation point (EC, µmol·photons·m-2·s-1) under ambient (29.5℃) and elevated temperatures (33.5℃) for G. ellipitica, L. samaensis, U. flabellum and H. discoidea. Vertical bar indicates a standard deviation (n=3 or 4); the letter on top of each bar indicates the significant difference (P<0.05)"
Fig. 4
Fig. 5
Dark respiration (Rd; µmol O2·g-1 FW·h-1) of G. ellipitica, L. samaensis, U. flabellum, and H. discoidea under ambient (29.5℃) and elevated (33.5℃) temperatures. Vertical bar indicates standard deviation (n=3 or 4), and the letter indicates significant difference (P<0.05)"
Fig. 5
Fig. 6
Daily carbon fixation (mg C·g-1 FW·d-1) of G. ellipitica, L. samaensis, U. flabellum, and H. discoidea under ambient (29.5℃) and elevated (33.5℃) temperatures. Vertical bar indicates standard deviation (n = 3 or 4), and the letter indicates significant difference (P<0.05)"
Fig. 6
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