Abstract:
:Global climate change (GCC) can negatively affect freshwater ecosystems. However, the degree to which freshwater populations can acclimate to long-term warming and the underlying molecular mechanisms are not yet fully understood. We used the cooling water discharge (CWD) area of a power plant as a model for long-term warming. Survival and molecular stress responses (expression of molecular chaperones, antioxidants, bioenergetic and protein synthesis biomarkers) to experimental warming (20-41 °C, +1.5 °C per day) were assessed in invasive clams Corbicula fluminea from two pristine populations and a CWD population. CWD clams had considerably higher (by ~8-12 °C) lethal temperature thresholds than clams from the pristine areas. High thermal tolerance of CWD clams was associated with overexpression of heat shock proteins HSP70, HSP90 and HSP60 and activation of protein synthesis at 38 °C. Heat shock response was prioritized over the oxidative stress response resulting in accumulation of oxidative lesions and ubiquitinated proteins during heat stress in CWD clams. Future studies should determine whether the increase in thermal tolerance in CWD clams are due to genetic adaptation and/or phenotypic plasticity. Overall, our findings indicate that C. fluminea has potential to survive and increase its invasive range during warming such as expected during GCC.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Falfushynska HI,Phan T,Sokolova IMdoi
10.1038/srep39476subject
Has Abstractpub_date
2016-12-20 00:00:00pages
39476issn
2045-2322pii
srep39476journal_volume
6pub_type
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journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-18957-9
更新日期:2018-01-17 00:00:00
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pub_type: 已发布勘误
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pub_type: 杂志文章,meta分析
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pub_type: 临床试验,杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 已发布勘误
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
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