DOI: 10.1016/j.scitotenv.2019.136280
论文题名: Adaptations to the mudflat: Insights from physiological and transcriptional responses to thermal stress in a burrowing bivalve Sinonovacula constricta
作者: Zhang W.-Y. ; Storey K.B. ; Dong Y.-W.
刊名: Science of the Total Environment
ISSN: 489697
出版年: 2020
卷: 710 语种: 英语
英文关键词: Mudflat
; Physiological adaptation
; Razor clam
; Temperature
; Transcriptome profiling
Scopus关键词: Ecosystems
; Global warming
; Molluscs
; Physiology
; Plants (botany)
; Proteins
; Shellfish
; Temperature
; Thermal stress
; Fluctuating temperatures
; Global climate changes
; Mudflats
; Physiological adaptations
; Potential buffer zones
; Razor Clams
; Transcriptional response
; Transcriptome profiling
; Physiological models
; Bcl2 associated athanogene 3
; heat shock protein
; molybdenum cofactor synthesis 3
; nuclear factor kappa B inhibitor alpha
; oligoribonuclease
; peptides and proteins
; transcriptome
; unclassified drug
; water
; bivalve
; buffer zone
; climate change
; gene expression
; global warming
; intertidal environment
; mudflat
; physiological response
; population dynamics
; protein
; temperature effect
; adaptation
; Article
; BAG3 gene
; bivalve
; burrowing species
; controlled study
; ebb tide
; environmental temperature
; gene expression
; habitat quality
; heart performance
; high temperature
; metabolic regulation
; MOCS3 gene
; mudflat
; NFIA gene
; nonhuman
; priority journal
; protein expression
; protein homeostasis
; REX2 gene
; Sinonovacula constricta
; survival
; temperature stress
; transcriptomics
; upregulation
; wetland
; Bivalvia
; Sinonovacula constricta
; Solenidae
英文摘要: Understanding physiological adaptations of organisms to temperature changes that characterize their habitat is the first step in predicting the putative effects of global climate change on population dynamics. Mudflats are an important part of the intertidal zone and experience extreme and fluctuating temperatures. Therein, species would be potentially susceptible to global warming. The present study explored physiological adaptations of burrowing species to life in an intertidal mudflat by analyzing the potential operative temperatures in the mudflat, and assessing cardiac performance and the transcriptional response to thermal stress by a typical burrowing bivalve, the razor clam Sinonovacula constricta in different thermal environments, mimicking conditions during low tides. Clams showed higher thermal sublethal limits in mud with overlying air than in mud with overlying water, indicating an adaptation to rapidly changing ambient temperatures and thermal environments during emersion. This sublethal limit was far above the maximum operative temperature in the actual habitat site and suggests a potential buffer zone to ensure survival under unexpected high temperatures, that could occur with global warming. In response to high temperature, S. constricta exhibited the common heat stress response by up-regulating expression of the Bcl2-associated athanogene 3 (BAG3) and heat shock proteins to cope with the adverse effects of high temperature on protein homeostasis. Increased expression of key genes, including molybdenum cofactor synthesis 3 (MOCS3), oligoribonuclease (REX2), and NFκappaB inhibitor alpha (NFIA) may further remit the effect of thermal stress during the emersion period and delay a situation where clams reach their thermal sublethal limit, thereby helping to endure high temperature during low tide. These results clearly illustrate significant adaptations of a burrowing bivalve to life in intertidal mudflats at both physiological and molecular levels and can provide insights into potential physiological or evolutionary responses that could aid survival of mudflat species in a changing global climate. © 2019 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158637
Appears in Collections: 气候变化与战略
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作者单位: State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, China; Institute of Biochemistry and Department of Biology, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada; Key Laboratory of Mariculture, Ministry of Education, Fisheries College, Ocean University of China, Qingdao, 266003, China
Recommended Citation:
Zhang W.-Y.,Storey K.B.,Dong Y.-W.. Adaptations to the mudflat: Insights from physiological and transcriptional responses to thermal stress in a burrowing bivalve Sinonovacula constricta[J]. Science of the Total Environment,2020-01-01,710