不同光强对铜绿微囊藻生长及叶绿素荧光动力学的影响  

The Growth and Chlorophyll Fluorescence Dynamics Change of Microcystic Aerugiuosa Treated with Different Light

作　　者：张丽霞[1] 朱涛[1] 张雅婷[1] 陈坤[1] 

机构地区：[1]信阳师范学院生命科学学院,河南信阳464000

出　　处：《信阳师范学院学报（自然科学版）》2009年第1期63-65,共3页Journal of Xinyang Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(30470276)

摘　　要：利用连续激发式荧光仪,通过测定铜绿微囊藻PSⅡ的最大光能转化效率(Fv/Fm)、QA被还原的最大速率(Mo)、照光2 ms时有活性的反应中心的关闭程度(VJ),研究不同光强对铜绿微囊藻生长及叶绿素荧光动力学变化的影响.结果表明:铜绿微囊藻生长和进行光合作用的最适光照为40μE.m-2.s-1.强光胁迫使铜绿微囊藻的荧光参数Fv/Fm显著降低,而Mo与VJ则明显升高,细胞分裂速度也显著降低.The effects of the different light intensity on the chlorophyll fluorescence parameters in microcystic aeruginosa were studied by using unmodulated chlorophyll fluorometer. The results indicated that under his experimen- tal condition, the optimum light for the growth and photosynthesis of microcystic aeruginosa is 40 μE · m^-2· s^-1 Strong light intensity results in the significant decrease of the fluorescence parameter Fv/Fm of microcystic aeruginosa and cell growth rate and the obvious increase of Mo and VJ.

关 键 词：铜绿微囊藻 不同光强 叶绿素荧光动力学 

分 类 号：Q143[生物学—生态学] Q948[生物学—普通生物学]