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作 者 ：蒋雯婷;王全喜;吴双秀;*

期 刊 ：植物研究 2007年 27卷 3期 页码：284-288

关键词：莱茵衣藻；盐胁迫；光合特性；

Keywords:Chlamydomonas reinhardtii, salt stress, photosynthesis characteristics,

摘 要 ：以莱茵衣藻（Chlamydomonas reinhardtii）为研究对象，对其在不同NaCl浓度胁迫条件下的光合特性进行了初步研究。结果表明0.04 mol·L^-1的NaCl对莱茵衣藻的生长无显著影响，而0.075 mol·L^-1的NaCl使莱茵衣藻生长速率下降了50%。在低光照强度下，NaCl胁迫下的衣藻光合速率和呼吸速率在最初7 h内比对照组高；而在较高光照强度下，NaCl胁迫下的衣藻的光合速率和呼吸速率均比对照组低；而且光合速率和呼吸速率升高和下降的幅度与NaCl浓度成正比。

Abstract:We choose Chlamydomonas reinhardtii as our subject to focus on it’s photosynthesis characteristics under salty stress. The growth rate of C. reinhardtii under 0.04 mol·L^-1 NaCl treatment showed no obvious inhibition but it decreased about 50% under 0.075 mol·L^-1 NaCl treatment. In the low light density, the photosynthetic rate and respiration rate of C. reinhardtii were stimulated by the NaCl stress within 7 hours after the treatment. While in the high light density, the photosynthetic rate and respiration rate decreased under NaCl treatments. The increase degree and decrease degree of the photosynthetic and respiration rates were parallel with the concentration of NaCl.

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