鄂尔多斯螺旋藻(Spirulina erdosensis)光合生理的研究  

Studies on the photosynthetic physiology of Spirulina erdosensis

作　　者：刘华[1] 乔辰[2] 巩东辉[2] 王志忠[2] 

机构地区：[1]西北农林科技大学资源环境学院,陕西杨陵712100 [2]内蒙古农业大学农学院,呼和浩特010019

出　　处：《西北植物学报》2003年第12期2127-2131,共5页Acta Botanica Boreali-Occidentalia Sinica

基　　金：国家自然科学基金项目 批准号:39960062 ;内蒙古自治区自然科学基金项目 (No.990303-4 )

摘　　要：对鄂尔多斯高原碱湖的鄂尔多斯螺旋藻Spirulinaerdosensis光合色素的吸收光谱、含量、光合速率和呼吸速率日变化进行了研究.结果表明:活体吸收光谱体现出了各色素在不同波段范围内的吸收差异;各种色素相对荧光强度有明显的差异.藻胆素的含量最高为97.86mg·g-1DW;类胡萝卜素的最低,为2.11mg·g-1DW;Chla为7.70mg·g-1DW.其光合速率的日变化呈单峰曲线,真、净光合速率均在13∶00达到最大,分别为36.24μmol·m-2·s-1和23.45μmol·m-2·s-1.Spirulina erdosensis is first found in the saltlake of Inner Mongolia Erdos Plateau. Its spectrum characteristics,photosynthetic rate,and aspiration rate were described in this paper. It revealed that photosynthetic pigment has different absorptional characteristics in different spectrum range, the content of Chl a, carotenoid, and phycobilin have distinct variance, and the coefficient between the net photosynthetic rate and the temperature is higher than that of net photosynthetic rate and the light intensity. The biggest net photosynthetic rate is up to 23.45μmol·m^(-2)·s^(-1) in a day.

关 键 词：鄂尔多斯螺旋藻 光合生理 鄂尔多斯高原碱湖 吸收光谱 光合色素 

分 类 号：Q949.2[生物学—植物学] Q945.11