Regulation of heat shock protein 70 (Hsp70) levels in the bdelloid rotifer Rotaria rotatoria under temperature stress
| Autor: | Ying-Ying Chen, Xin-Li Wen, Ya-Li Ge, Yi-Long Xi, Ruiming Jiang, Xian-Ling Xiang |
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| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
biology Ecology 010604 marine biology & hydrobiology Period (gene) media_common.quotation_subject Zoology Rotifer Rotaria rotatoria Parthenogenesis biology.organism_classification 010603 evolutionary biology 01 natural sciences Temperature stress Hsp70 Heat shock protein Animal Science and Zoology Reproduction Ecology Evolution Behavior and Systematics media_common |
| Zdroj: | Israel Journal of Ecology & Evolution. 63:69-77 |
| ISSN: | 2224-4662 1565-9801 |
| DOI: | 10.1163/22244662-06301001 |
| Popis: | The bdelloid rotifer is an important component of freshwater zooplankton, exhibiting the features of parthenogenesis and anhydrobiotic capability. Heat shock proteins (Hsps), acting as molecular chaperones, are a highly conserved, ubiquitously expressed family of stress response proteins. In this study, the thermal optimums for heat-shock response and the levels of Hsp70 in Rotaria rotatoria (bdelloid rotifer) under different stress conditions were evaluated using survival assays and western blotting with fluorescent detection. The results showed that: (1) The survivorship in R. rotatoria were 100% throughout the temperature range of 12°C to 40°C, and the population growth rate reached its culmination at 28°C, suggesting the retardation of growth and reproduction at the other temperatures; (2) While stressed under 40°C, the levels of Hsp70 in R. rotatoria increased significantly over time, correlating with the duration of the stress; (3) As responses to different temperatures, the synthesis of Hsp70 could be induced significantly in R. rotatoria under both of high (40°C) and low (16°C) temperatures; (4) After removal of the thermal stress and recovery at 28°C, the levels of Hsp70 continued to rise for a period of time, peaked at 12 h, and then slowly declined with the extension of recovery duration, until there is no significant difference of Hsp70 levels. Summarily, with the fluctuations of stress duration and temperature, the rotifers could adapt to the environments sensitively by regulating the synthesis of Hsp70. |
| Databáze: | OpenAIRE |
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