植物学报 ›› 2005, Vol. 22 ›› Issue (增刊): 57-63.

• 实验简报 • 上一篇    下一篇

鄂尔多斯高原碱湖的钝顶螺旋藻光合生理研究

1,3 刘 华 2 乔 辰 2 王志忠 2 巩东辉   

    1. 1(西北农林科技大学资源环境学院 杨凌 712100) 
    2. 2(内蒙古农业大学农学院 呼和浩特 010019) 
    3. 3(中国林业科学研究院, 森林生态环境与保护研究所 北京 100091)
  • 收稿日期:2004-05-25 修回日期:2005-01-10 出版日期:2005-08-10 发布日期:2005-08-10
  • 通讯作者: 乔辰
  • 基金资助:
    国家自然科学基金项目(39960062)和内蒙古自然科学基金项目(990303-4)资助

Photosynthetic Physiology of Spirulina(Arthrospira) platensis in the Alkaline Lakes Erdos Plateau

1,3LIU Hua 2QIAO Chen 2WANG Zhi-Zhong 2GONG Dong-Hui   

    1. 1 (Resource and Environment College, Northwestern Science and Technology University of Agricultural and Forestry, Yangling 712100) 
    2. 2 (College of Agronomy, Inner Mongolia Agricultural University, Huhhot 010019) 
    3. 3 (Institute of Forest Ecology, Environment and Protection, the Chinese Academy of Forestry, Beijing 100091)
  • Received:2004-05-25 Revised:2005-01-10 Online:2005-08-10 Published:2005-08-10

摘要: 鄂尔多斯高原碱湖的钝顶螺旋藻光合色素含量高低排列为藻胆素>叶绿素a>类胡萝卜素; 各色素具有特定的吸收光谱, 活体吸收光谱体现出了各色素的吸收; 各色素的荧光发射主峰波长约长于活体的13~35 nm, 相对荧光强度约是活体的11倍。其光合速率的日变化呈单峰曲线, 13:00时达到最高;光补偿点为28~30 mmol.m-2.s-1; 光饱和点为220~235 mmol.m-2.s-1; 光合作用的最适温度为35 ℃。呼吸速率日变化随温度的升高呈缓慢上升的趋势。

关键词: 钝顶螺旋藻, 光合生理, 鄂尔多斯高原, 碱湖

Abstract: Spirulina (Arthrospira) platensis has 3 kinds of photosynthetic pigment. Their contents in Spirulina(Arthrospira) platensis are phycobilin>Chls > carotenoid. Each pigment has its own absorption characteristics in a different spectrum range, and some absorption characteristics appear in the absorption spectrum of the living body. The value of fluorescence emission apexes in all pigments is higher by 13-15 nm than that in the living body. The relative fluorescence density of pigment is 11-fold greater than that in living body. The change of photosynthetic rate is a single-peak curve, and the highest photosynthetic rate is at 13:00 in a day. The light saturation point is 28-30 mmol.m-2.s-1, the light compensation point is 220-235 mmol.m-2.s-1, and the optimal temperature for photosynthesis is 35 ℃. The respiration rate increases slowly with temperature.

Key words: Spirulina(Arthrospira) platensis, Photosynthetic physiology, Erdos Plateau, Alkaline Lakes