Population variability in heat shock proteins among three Antarctic penguin species
Population variability in heat shock proteins among three Antarctic penguin species
复制标题
三种南极企鹅物种热休克蛋白的群体变异
DOI：
10.1007/s00300-007-0284-0
复制
发表时间：
2007
期刊：
影响因子：
1.7
通讯作者：
S. García
中科院分区：
文献类型：
--
作者：
A. Barbosa;S. Merino;J. Benzal;Javier Martínez;S. García
热休克蛋白 (HSP) 在应激条件下合成，例如暴露于高温、污染、自由基、紫外线或寄生虫和/或病原体引起的病理生理状态。 HSP 通过调节蛋白质折叠来发挥保护细胞的作用。在南极洲，人们在原生动物和鱼类等生物体中研究了这些蛋白质，而没有考虑地理差异。我们研究了从乔治王岛 (62°15′S) 到阿维安岛 (67°46′S) 沿南极半岛不同种群的巴布亚企鹅、阿德利企鹅和帽带企鹅的 HSP70 和 HSP60 水平的变化。我们的结果表明，巴布亚企鹅北部种群的 HSP70 和 HSP60 水平高于南部种群。高温、人类影响和免疫力作为北方地区寄生虫和疾病的代表可以解释这种差异。阿德利企鹅仅在 HSP70 中表现出显着的地理差异，从北到南增加，这种模式可能与从北到南紫外线辐射增加和温度降低有关。帽带企鹅在 HSP70 和 HSP60 的变异中都没有表现出群体差异，尽管 HSP70 显示出轻微的显着差异。还讨论了这些蛋白质水平的性别差异。
Heat shock proteins (HSPs) are synthesised under stressful conditions such as exposure to elevated temperatures, contamination, free radicals, UV light or pathophysiological states resulting from parasites and/or pathogens. HSPs function to protect cells by means of modulation of protein folding. In Antarctica, these proteins have been studied in such organisms as protozoa and fishes, without attention to geographical variation. We studied the variation of HSP70 and HSP60 levels in Gentoo, Adelie and Chinstrap penguins among different populations along the Antarctic Peninsula from King George Island (62°15′S) to Avian Island (67°46′S). Our results show that the northern population of Gentoo penguin showed higher levels of HSP70 and HSP60 than the southern population. High temperature, human impact and immunity as a proxy for parasites and diseases in northern locations could explain such variation. Adelie penguin only showed significant geographical variation in HSP70, increasing north to south, a pattern perhaps related to increased UV radiation and decreased temperatures from north to south. Chinstrap penguin shows no population differences in the variation in neither HSP70 nor HSP60, although HSP70 showed marginally significant differences. Sexual differences in the level of these proteins are also discussed.
DOI：
10.1073/pnas.85.21.7927
发表时间：
1988-11-01
影响因子：
11.1
作者：
BOSCH, TCG;KRYLOW, SM;STEELE, RE
通讯作者：
STEELE, RE