Effects of solar ultraviolet radiation on the photochemical efficiency, photosynthetic pigments and biomass production of Spirulina platensis  

作　　者：WUHongyan GAOKunshan TeruoWATANABE 

机构地区：[1]MarineBiologyInstitute,ShantouUniversity,Shantou515063,China [2]MarineBiologyInstitute,ShantouUniversity,Shantou515063,China／／InstituteofHydrobiology,ChineseAcademyofSciences,Wuhan430072,China [3]HainanDICMicroalgaeCo,Ltd.,HaikouInternationalCommercialCentre38,Haikou570102,China

出　　处：《Progress in Natural Science:Materials International》2005年第5期477-480,共4页自然科学进展·国际材料（英文版）

基　　金：Supported by Hainan DIC Microalgae Co. Ltd. and National Natural Science Foundation of China (Grant No. 30070582)

摘　　要：Effects of solar ultraviolet radiation (UVR) on Spirulina platensis were studied by investigating its photochemical efficiency, photosynthetic pigments and biomass production while exposed to full spectrum solar radiation or depleted of UVR for understanding how and to what extent UVR influences its photosynthetic physiology and production. It was found that UVR brought about an extra inhibition of photochemical efficiency by 26%—30%. The greatest inhibition of photochemical efficiency in S. platensis was observed at noontime, and then recovered to some extent in late afternoon no matter which treatment they were exposed to. The contents of chlorophyll a, phycocyanin and carotenoids increased during initial stage of the exposure, but decreased with elongated exposure. UVR decreased the biomass yield by about 6%. It indicated that filtering out UVR of solar radiation would raise the productivity of S. platensis, which is an important factor that should be considered in the production.Effects of solar ultraviolet radiation (UVR) on Spirulina platensis were studied by investigating its photochemical efficiency, photosynthetic pigments and biomass production while exposed to full spectrum solar radiation or depleted of UVR for understanding how and to what extent UVR influences its photosynthetic physiology and production. It was found that UVR brought about an extra inhibition of photochemical efficiency by 26%—30%. The greatest inhibition of photochemical efficiency in S. platensis was observed at noontime, and then recovered to some extent in late afternoon no matter which treatment they were exposed to. The contents of chlorophyll a, phycocyanin and carotenoids increased during initial stage of the exposure, but decreased with elongated exposure. UVR decreased the biomass yield by about 6%. It indicated that filtering out UVR of solar radiation would raise the productivity of S. platensis, which is an important factor that should be considered in the production.

关 键 词：ultraviolet radiation Spirulina platensis photochemical efficiency biomass production pigments. 

分 类 号：Q945[生物学—植物学]