Temperature- and pH-dependent accumulation of heat-shock proteins in the acidophilic green alga Chlamydomonas acidophila
Temperature- and pH-dependent accumulation of heat-shock proteins in the acidophilic green alga Chlamydomonas acidophila
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DOI：
10.1111/j.1574-6941.2006.00078.x
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发表时间：
2006-06-01
影响因子：
4.2
通讯作者：
Spijkerman, Elly
中科院分区：
文献类型：
--
作者：
Gerloff-Elias, Antje;Barua, Deepak;Spijkerman, Elly
嗜酸衣原体是一种单细胞绿色浮游植物，是酸性水体中的优势种，面临着低pH和高重金属浓度等恶劣环境条件。我们研究了pH值，和温度依赖性积累的热休克蛋白在这一时期，以确定热休克蛋白是否发挥作用，在适应他们的环境。我们的研究结果表明，增加热休克蛋白的积累在次优pH值，这是没有连接的细胞内pH值的任何变化。在嗜温的莱茵衣藻相比，嗜酸性物种表现出显着较高的积累热休克蛋白在控制条件下，表明环境适应的基础水平增加的热休克蛋白。这些结果表明，热休克蛋白可能在C.嗜酸藻类，以及可能的其他嗜酸藻类，到它们的极端环境。
Chlamydomonas acidophila, a unicellular green alga, is a dominant phytoplankton species in acidic water bodies, facing severe environmental conditions such as low pH and high heavy metal concentrations. We examined the pH-, and temperature-dependent accumulation of heat-shock proteins in this alga to determine whether heat-shock proteins play a role in adaptation to their environment. Our results show increased heat-shock proteins accumulation at suboptimal pHs, which were not connected with any change in intracellular pH. In comparison to the mesophilic Chlamydomonas reinhardtii, the acidophilic species exhibited significantly higher accumulations of heat-shock proteins under control conditions, indicating an environmental adaptation of increased basal levels of heat-shock proteins. The results suggest that heat-shock proteins might play a role in the adaptation of C. acidophila, and possibly other acidophilic algae, to their extreme environment.