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10种极地微藻叶绿素荧光特征分析

【标题】10种极地微藻叶绿素荧光特征分析

【Title】ANALYSIS OF CHLOROPHYLL FLUORESCENCE CHARACTERISTICS ON TEN KINDS OF POLAR MICROALGAE

【DOI】10.3724/SP.J.1084.2011.183

【作者】 光应芝; 张芳; 张前前; 蔡明红; 何剑锋

【Author】 Zhang Fang ; Cai Minghong ; He Jianfeng

【期刊】极地研究

【Journal】

【期刊年份】2011

【卷】23

【期】3

【关键词】 极地微藻; 叶绿色荧光; 非光化学淬灭; 快速光曲线

【Keywords】 Rapid Light Curve

【摘要】海洋浮游植物是水体环境中重要的初级生产者,其光合能力与浮游植物生产力密切相关,而这些均能在叶绿素荧光动力学上得以体现。利用调制叶绿素荧光仪(Water-PAM)对实验室培养的10种极地微藻的叶绿素荧光参数(Fv /Fo,Fv /Fm,NPQ)和快速光曲线拟合参数(Pm、α和Ik)进行测量和分析。结果表明:除CCMP2084外,其余9种微藻处均于正常生长状态。PSⅡ潜在活性值Fv/Fo大于1.0的藻共有8种,大小顺序分别为CCMP1056>CCMP1204>CCMP165>CCMP2095>CCMP1309>CCMP445>CCMP213>CCMP2087。其中短孢角毛藻CCMP165、四棘藻CCMP213和海链藻CCMP1056三种藻的光保护能力较强(NPQ值分别大于2.0)。这三种藻对光照耐受能力强弱顺序为CCMP213>CCMP1056>CCMP165(比较三种藻的Ik值)。因此,四棘藻CCMP213和海链藻CCMP1056比短孢角毛藻CCMP165更适合在较强的光照强度下培养。

【Abstract】Marine phytoplanktons are important primary producer in aquatic environment and the productivity of them is related to its photosynthetic capacity. Chlorophyll fluorescence parameters (Fv /Fo, Fv /Fm, ΦPSⅡand NPQ) as well as the rapid light curve containing photosynthetic efficiency (a), maximal electron transport rate (Pm) and minimum saturating irradiance (Ik) of ten kinds of polar microalgae strains were measured by Water-PAM respectively. Nine kinds of strains except for CCMP2084 were in healthy physiological status. Fv /Fo of eight strains, whose values were higher than 1.0, showed activity sequence of PSⅡ as CCMP1056>CCMP1204>CCMP165>CCMP2095>CCMP1309>CCMP445>CCMP213>CCMP2087. Besides, three strains including Chaetoceros brevis CCMP165, Attheya sp.CCMP213 and Thalassiosira sp CCMP1056, exhibit stronger photoprotection with the NPQ value higher than 2.0. Compared by Ik value, the sequence of light tolerance was CCMP213>CCMP1056>CCMP165. The strains of Attheya sp CCMP213 and Thalassiosira sp.CCMP1056 showed better adaptation to high irradiance than Chaetoceros brevis CCMP165.

【基金/项目】 南、北极海洋微微型浮游植物群落及其生态作用研究 ; 极地生态环境监测规范的研究与制订

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