Photosynthetic response of surface water phytoplankton assemblages to different wavebands of UV radiation in the South China Sea

WU Ya-ping; GAO Kun-shan

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WU Ya-ping, GAO Kun-shan. Photosynthetic response of surface water phytoplankton assemblages to different wavebands of UV radiation in the South China Sea[J]. Haiyang Xuebao, 2011, 33(5): 146-151.

Citation:

WU Ya-ping, GAO Kun-shan. Photosynthetic response of surface water phytoplankton assemblages to different wavebands of UV radiation in the South China Sea[J]. Haiyang Xuebao, 2011, 33(5): 146-151.

WU Ya-ping, GAO Kun-shan. Photosynthetic response of surface water phytoplankton assemblages to different wavebands of UV radiation in the South China Sea[J]. Haiyang Xuebao, 2011, 33(5): 146-151.

Citation:

WU Ya-ping, GAO Kun-shan. Photosynthetic response of surface water phytoplankton assemblages to different wavebands of UV radiation in the South China Sea[J]. Haiyang Xuebao, 2011, 33(5): 146-151.

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Photosynthetic response of surface water phytoplankton assemblages to different wavebands of UV radiation in the South China Sea

State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China; 361005

Received Date: 2010-06-13

Abstract

Abstract

The photosynthetic carbon fixation of phytoplankton was affected significantly by solar UV radiation, while these effects are wavelength dependent.We investigated the photosynthetic carbon fixation by surface water phytoplankton assemblages of the South China Sea in summer under different radiation treatments to evaluate the photosynthetic response to different wavelength of UVR.The photosynthetic carbon fixation rate was the highest under PAR treatment, with the mean value of 10.86 μg/(μg·h).When the samples were exposed to PAR+UV radiation, the photosynthetic carbon fixation rate decreased significantly, the shorter wavelength exposed, the lower photosynthetic carbon fixation rate observed.As a result, the photosynthetic carbon fixation rate under full spectrum of solar radiation was the lowest, with the mean value of 6.51 μg/(μg·h), the relative inhibition induced by UVR was about 40%.Moreover, the effects of UV radiation were wavelength dependent, biological weighting function (BWF) indicated that the shorter wavelength of UVR, the higher inhibition per energy induced.The biological weight of the shortest wavelength of UV-B (i.e.280 nm) was at least 10⁶ times of the UV-A (＞320 nm).
- biological weighting function,
- phytoplankton,
- photosynthetic carbon fixation,
- UV radiation,

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References(22)

References

HDER D P, KUMAR H D, SMITH R C, et al.Effects of solar UV radiation on aquatic ecosystems and interactions with climate change[J]. Photoch Photobio Sci, 2007, 6: 267-285.

BOUCHARD J N, ROY S, FERREYRA G, et al.Ultraviolet-B effects on photosystem Ⅱ efficiency of natural phytoplankton communities from Antarctica[J]. Polar Biol, 2005, 28: 607-618.

WORREST R C, VAN DYKE H, THOMSON B E.Impact of enhanced simulated solar ultraviolet radiation upon a marine community[J]. Photochem Photobiol, 1978, 27: 471-478.

唐学玺, 杨震, 王悠, 等.紫外辐射诱发三角褐指藻自由基伤害的研究[J]. 海洋通报, 1999, 18: 93-96.

GAO K, LI P, WATANABE T, et al.Combined effects of ultraviolet radiation and temperature on morphology, photosynthesis and DNA of Arthrospira (Spirulina) platensis (Cyanophyta)[J]. J Phycol, 2008, 44: 777-786.

刘晓娟, 段舜山, 李爱芬.绿色巴夫藻受紫外(UV-B)胁迫后的超补偿生长效应[J]. 应用生态学报, 2007, 18: 169-173.

MOSELEY H, MACKIE R M.Ultraviolet B radiation was increased at ground level in Scotland during a period of ozone depletion[J]. Brit J Dermatol, 1997, 137: 101-102.

WU Y, GAO K, LI G, et al.Seasonal impacts of solar UV radiation on photosynthesis of phytoplankton assemblages in the coastal waters of the South China Sea[J]. Photochem Photobiol, 2010, 86: 586-592.

MARCOVAL M A, VILLAFANE V E, HELBLING E W.Combined effects of solar ultraviolet radiation and nutrients addition on growth, biomass and taxonomic composition of coastal marine phytoplankton communities of Patagonia[J]. J Photoch Photobio B, 2008, 91: 157-166.

GAO K, LI G, HELBLING E W, et al.Variability of UVR effects on photosynthesis of summer phytoplankton assemblages from a tropical coastal area of the South China Sea[J]. Photochem Photobiol, 2007, 83: 802-809.

GAO K, WU Y, LI G, et al.Solar UV-radiation drives CO2-fixation in marine phytoplankton: A double-edged sword[J]. Plant Physiol, 2007, 144: 54-59.

CULLEN J J, NEALE P J, LESSER M P.Biological weighting function for the inhibition of phytoplankton photosynthesis by ultraviolet radiation[J]. Science, 1992, 258: 646-650.

HELBLING E W, GAO K, GONCALVES R J, et al.Utilization of solar UV radiation by coastal phytoplankton assemblages off SE China when exposed to fast mixing[J]. Mar Ecol-Prog Ser, 2003, 259: 59-66.

PORRA R J.The chequered history of the development and use of simultaneous equations for the accurate determination of chlorophylls a and b[J]. Photosynth Res, 2002, 73: 149-156.

STEEMANN N E.The use of radio-active carbon (C14) for measuring organic production in the sea[J]. J Cons Perm Int Explor Mer, 1952, 18: 117-140.

RUGGABER A, DLUGI R, NAKAJIMA T.Modelling of radiation quantities and photolysis frequencies in the troposphere[J]. J Atmos Chem, 1994, 18: 171-210.

DYOMINOV I G, ZADOROZHNY A M.Greenhouse gases and recovery of the Earth's ozone layer[J]. Adv Space Res, 2005, 35: 1369-1374.

HELBLING E W, VILLAFAÑE V E, UV radiation effects on phytoplankton primary production: a comparison between Arctic and Antarctic marine ecosystems[M]// HESSEN D O(ed.)UV-radiation and arctic ecosystems. Ecological studies, No. 153. Berlin: Springer-Verlag, 2002, 203-226.

李刚.中国南海浮游植物光合固碳与阳光紫外辐射关系的研究 .汕头:汕头大学,2009.

WANGBERG S A, ANDREASSON K I M, GARDE K, et al.Inhibition of primary production by UV-B radiation in an Arctic bay-model calculations[J].Aquat Sci, 2006, 68: 117-128.

SOBRINO C, WARD M L, NEALE P J.Acclimation to elevated carbon dioxide and ultraviolet radiation in the diatom Thalassiosira pseudonana: Effects on growth, photosynthesis, and spectral sensitivity of photoinhibition[J]. Limnol Oceanogr, 2008, 53: 494-505.

FLEISCHMANN F M.The measurement and penetration of ultraviolet radiation into tropical marine water[J]. Limnol Oceanogr, 1989, 34: 1623-1629.

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