低温、强光处理后鄂尔多斯高原碱湖及乍得湖钝顶螺旋藻的补偿生长

COMPENSATORY GROWTH OF SPIRULINA PLATENSIS IN ALKALI LAKE OF ERDOS PLATEAU AND CHAD LAKE AFTER LOW TEMPERATURE AND HIGN LIGHT TREATMENT

本文以鄂尔多斯高原碱湖钝顶螺旋藻(S1)及非洲乍得湖钝顶螺旋藻(S2)为实验材料,通过生理学方法研究了低温、强光胁迫处理后S1、S2的补偿生长。结果表明:藻体叶绿素a、可溶性糖、可溶性蛋白含量在低温、强光胁迫条件下均呈现出不同程度的下降;低温、强光下处理的样品在室温、自然光下进行恢复生长,S1各项生理指标的恢复均快于S2,且恢复时间与处理温度、时间呈负相关;对不同条件下处理的藻细胞镜检发现:低温、强光处理后的藻丝体发生不同程度的断裂,颜色由深变浅,发生光漂白,光漂白程度均为S2>S1。

This research used the Spiruhna platensis in the alkaline lake of Erdos Plateau （ St ） and the Spirulina platensis in the lake of Chad Africa （ S2 ） as experimental material, studied the compensatory growth of St , S2 after low temperature and high light treatment by the physiological method. The results showed： The chlorophyll a, soluble sugar, soluble protein decreased under the stress of low temperature and high light; The samples recovered in room temperature and natural light which treated with low temperature and high light, the physical indexes of $1 were better than that of $2, the recovery time negatively correlated with the treating time and the trea- ting temperature ; To examine the cell treated with different condition by microscope showed ： The algal filament was broken more or less after treated with low temperature and high light, the color turned from deep to shallow caused by photobleaching, the level of photob- leaching was S2 〉 S1.