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引用本文:孙昕,何飞飞,李鹏飞,汤加刚.光照周期性波动对铜绿微囊藻(Microcystis aeruginosa)和斜生栅藻(Scenedesmus obliquus)生长的抑制.湖泊科学,2018,30(5):1309-1318. DOI:10.18307/2018.0513
SUN Xin,HE Feifei,LI Pengfei,TANG Jiagang.The growth inhibition of Microcystis aeruginosa and Scenedesmus obliquus by periodic light fluctuation. J. Lake Sci.2018,30(5):1309-1318. DOI:10.18307/2018.0513
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光照周期性波动对铜绿微囊藻(Microcystis aeruginosa)和斜生栅藻(Scenedesmus obliquus)生长的抑制
孙昕, 何飞飞, 李鹏飞, 汤加刚
西安建筑科技大学环境与市政工程学院, 西安 710055
摘要:
利用自行研制的光生物反应器,以水库中典型的铜绿微囊藻(Microcystis aeruginosa)和斜生栅藻(Scenedesmus obliquus)为研究对象,研究了两种藻类在光照强度周期性波动条件下的抑制特性.结果表明,相对恒定时平均光照强度6100 lx而言,在光照强度周期性波动条件下,在培养至24天时,铜绿微囊藻生物量降低14%、颜色稍黄,斜生栅藻生物量降低24%、藻体严重泛黄;铜绿微囊藻的叶绿素a和类胡萝卜素含量分别降低12.7%和55.5%,斜生栅藻的叶绿素a和类胡萝卜素含量分别降低78%和74%;模拟内波的周期性波动光强下,两种藻的光合作用参数Fv/Fm、YⅡ和ETR下降,热耗散量NPQ增高,且光合作用受到抑制,生长代谢能力减弱,这为内波控藻提供了理论依据.
关键词:  光照周期波动  铜绿微囊藻  斜生栅藻  生长抑制  光合作用
DOI:10.18307/2018.0513
分类号:
基金项目:国家自然科学基金项目(51178379,51278404)和陕西省科技统筹创新工程计划项目(2015KTCL-03-15)联合资助.
The growth inhibition of Microcystis aeruginosa and Scenedesmus obliquus by periodic light fluctuation
SUN Xin, HE Feifei, LI Pengfei, TANG Jiagang
School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, P. R. China
Abstract:
Taking the typical algae of Microcystis aeruginosa and Scenedesmus obliquus in reservoirs as study objects, the self-developed photobioreactor was used to study the effects of light fluctuation on the growth status and photosynthesis of algae. The experiment results showed that the biomass of the Microcystis aeruginosa decreased by 14%, the color was slightly yellow, while the biomass of the Scenedesmus obliquus was reduced by 24% and seriously yellowed when under fluctuating light than under static light intensity of 6100 lx; The chlorophyll-a and carotenoid of Microcystis aeruginosa decreased 12.7% and 55.5%, respectively, which of Scenedesmus obliquus decreased 78% and 74%, respectively; The photosynthetic parameters Fv/Fm, YⅡ and ETR of the two algae decreased and the heat flux NPQ increased, and the photosynthesis was inhibited and the growth and metabolism were weakened, which provided a theoretical basis for the control of algae by the internal wave.
Key words:  Light fluctuation  Microcystis aeruginosa  Scenedesmus obliquus  growth inhibition  photosynthesis
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