南极生物热耐受性：热极限的进化和适应性调节  

Thermal Tolerance of Antarctic Ice Algae： Evolution and Acclimatory Adjustment of Thermal Limit

作　　者：石红旗[1] 

机构地区：[1]国家海洋局第一海洋研究所,山东青岛266061

出　　处：《海洋科学进展》2005年第B12期86-89,共4页Advances in Marine Science

摘　　要：温室效应和全球气候变化已经影响到南、北极地区，极地气温升高对于极地生物链的基础部分产生巨大影响。南极生物链中的关键初级生产力是微藻，南极冰藻是极好的生态指示种。南极冰藻在高于生长适宜温度下生长受到抑制，抵抗高温胁迫的机制和能力制约着南极冰藻的生存，南极冰藻生存威胁到极地生态的生物多样性和极地生物链的完整性。持续低温环境进化过程对极端适冷微藻热适应机理的影响是理解极地气候变化对南极冰藻生态影响的依据。The greenhouse effect and global climate change have affected the Arctic and Antarctic areas, and the rise in polar air temperature has great effect on the basic part of polar biological chain. The microalgae are the key primary producer of Antarctic biological chain, and the Antarctic ice algae are good indicator species for the ecological environment. The growth of Antarctic ice algae is suppressive at a temperature higher its suitable growth temperature, their mechanism and capacity to resist the thermal stress will restrict the survival of Antarctic ice algae, and their survival will threaten the biodiversity of polar ecosystem and the integrality of polar biological chain, so the effect of evolutional process in sustained cold environment on thermal acclimation mechanism of ice algae is the basis to understand the ecological effect of polar climate change on Antarctic ice algae.

关 键 词：南极生物 冰藻 热耐受性 热适应机制 

分 类 号：Q949.2[生物学—植物学] Q111