DOI: 10.1016/j.envpol.2019.113850
论文题名: Mitigation effects of CO2-driven ocean acidification on Cd toxicity to the marine diatom Skeletonema costatum
作者: Dong F. ; Wang P. ; Qian W. ; Tang X. ; Zhu X. ; Wang Z. ; Cai Z. ; Wang J.
刊名: Environmental Pollution
ISSN: 2697491
出版年: 2020
卷: 259 语种: 英语
英文关键词: Cd
; Climate change
; Coastal pollution
; Ocean acidification
; Skeletonema costatum
; Toxicity
Scopus关键词: Acidification
; Biochemistry
; Cadmium
; Carbon dioxide
; Climate change
; Ecosystems
; Marine biology
; Metabolism
; Oceanography
; RNA
; Toxicity
; Coastal pollution
; Ecosystem management
; Mitigation effects
; Molecular levels
; Non-protein thiols
; Ocean acidifications
; Pyruvate metabolism
; Skeletonema costatum
; Marine pollution
; cadmium
; carbon dioxide
; pyruvic acid
; cadmium
; carbon dioxide enrichment
; climate change
; coastal zone
; diatom
; marine ecosystem
; metabolism
; ocean acidification
; toxicity
; acidification
; algal growth
; Article
; citric acid cycle
; climate change
; concentration (parameter)
; controlled study
; DNA metabolism
; ecotoxicity
; energy metabolism
; environmental exposure
; environmental impact
; gluconeogenesis
; glycolysis
; marine environment
; nonhuman
; ocean acidification
; oxidative stress
; photosynthesis
; protein metabolism
; risk assessment
; RNA metabolism
; seashore
; Skeletonema costatum
; upregulation
; water analysis
; water pollution
; water quality
; Nitzschia alba
; Skeletonema costatum
英文摘要: OA significantly alleviated the toxicity of Cd to S. costatum. Underlying mechanisms were identified. © 2019 Elsevier LtdOcean acidification (OA) is a global problem to marine ecosystems. Cadmium (Cd) is a typical metal pollutant, which is non-essential but extremely toxic to marine organisms. The combined effects of marine pollution and climate-driven ocean changes should be considered for the effective marine ecosystem management of coastal areas. Previous reports have separately investigated the influences of OA and Cd pollution on marine organisms. However, little is known of the potential combined effects of OA and Cd pollution on marine diatoms. We investigated the sole and combined influences of OA (1500 ppm CO2) and Cd exposure (0.4 and 1.2 mg/L) on the coastal diatom Skeletonema costatum. Our results clearly showed that OA significantly alleviated the toxicity of Cd to S. costatum growth and mitigated the oxidant stress, although the intercellular Cd accumulation still increased. OA partially rescued S. costatum from the inhibition of photosynthesis and pyruvate metabolism caused by Cd exposure. It also upregulated genes involved in gluconeogenesis, glycolysis, the citrate cycle (TCA), Ribonucleic acid (RNA) metabolism, and especially the biosynthesis of non-protein thiol compounds. These changes might contribute to algal growth and Cd resistance. Overall, this study demonstrates that OA can alleviate Cd toxicity to S. costatum and explores the potential underlying mechanisms at both the cellular and molecular levels. These results will ultimately help us understand the impacts of combined stresses of climate change and metal pollution on marine organisms and expand the knowledge of the ecological risks of OA. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158535
Appears in Collections: 气候变化与战略
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作者单位: College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518055, China; Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China; Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Zhuhai, 519000, China; Institute of Environmental Processes and Pollution Control, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 2141122, China
Recommended Citation:
Dong F.,Wang P.,Qian W.,et al. Mitigation effects of CO2-driven ocean acidification on Cd toxicity to the marine diatom Skeletonema costatum[J]. Environmental Pollution,2020-01-01,259