論文 - 詳細
| RRC ID | 30613 |
|---|---|
| 著者 | Tseng YC, Hu MY, Stumpp M, Lin LY, Melzner F, Hwang PP. |
| タイトル | CO(2)-driven seawater acidification differentially affects development and molecular plasticity along life history of fish (Oryzias latipes). |
| ジャーナル | Comp Biochem Physiol A Mol Integr Physiol |
| Abstract |
Fish early life stages have been shown to react sensitive to simulated ocean acidification. In particular, acid-base disturbances elicited by altered seawater carbonate chemistry have been shown to induce pathologies in larval fish. However, the mechanisms underlying these disturbances are largely unknown. We used gene expression profiling of genes involved in acid-base regulation and metabolism to investigate the effects of seawater hypercapnia on developing Japanese ricefish (medaka; Oryzias latipes). Our results demonstrate that embryos respond with delayed development during the time window of 2-5 dpf when exposed to a seawater pCO(2) of 0.12 and 0.42 kPa. This developmental delay is associated with strong down-regulation of genes from major metabolic pathways including glycolysis (G6PDH), Krebs cycle (CS) and the electron transport chain (CytC). In a second step we identified acid-base relevant genes in different ontogenetic stages (embryos, hatchlings and adults) and tissues (gill and intestine) that are up regulated in response to hypercapnia, including NHE3, NBCa, NBCb, AE1a, AE1b, ATP1a1a.1, ATP1a1b, ATP1b1a, Rhag, Rhbg and Rhcg. Interestingly, NHE3 and Rhcg expressions were increased in response to environmental hypercapnia in all ontogenetic stages and tissues tested, indicating the central role of these proteins in acid-base regulation. Furthermore, the increased expression of genes from amino acid metabolism pathways (ALT1, ALT2, AST1a, AST1b, AST2 and GLUD) suggests that energetic demands of hatchlings are fueled by the breakdown of amino acids. The present study provides a first detailed gene expression analysis throughout the ontogeny of a euryhaline teleost in response to seawater hypercapnia, indicating highest sensitivity in early embryonic stages, when functional ion regulatory epithelia are not yet developed. |
| 巻・号 | 165(2) |
| ページ | 119-30 |
| 公開日 | 2013-6-1 |
| DOI | 10.1016/j.cbpa.2013.02.005 |
| PII | S1095-6433(13)00035-4 |
| PMID | 23416137 |
| MeSH | Acid-Base Equilibrium / genetics Animals Carbon Dioxide / metabolism* Citric Acid Cycle / genetics Electron Transport / genetics Fish Proteins / genetics* Gene Expression Regulation, Developmental* Glycolysis / genetics Hydrogen-Ion Concentration Life Cycle Stages / genetics* Oryzias / embryology Oryzias / genetics* Oryzias / growth & development Reverse Transcriptase Polymerase Chain Reaction Seawater / chemistry Time Factors Transcriptome* |
| IF | 1.966 |
| 引用数 | 48 |
| WOS 分野 | ZOOLOGY PHYSIOLOGY BIOCHEMISTRY & MOLECULAR BIOLOGY |
| オルトメトリクス指標 |
オルトメトリクス指標項目
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| 最多言及媒体 | X(Twitter) |
| 各媒体での言及数の合計 | 2 |
| 過去6か月間でのオルトメトリクス指標の変動値 | 0.0 |
| リソース情報 | |
| メダカ | cab HdrR-II1(IB178) |