Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14116 |
Elucidating the sponge stress response; lipids and fatty acids can facilitate survival under future climate scenarios | |
Bennett, Holly1,2; Bell, James J.1; Davy, Simon K.1; Webster, Nicole S.2,3; Francis, David S.4 | |
2018-07-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY
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ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:7页码:3130-3144 |
文章类型 | Article |
语种 | 英语 |
国家 | New Zealand; Australia |
英文摘要 | Ocean warming (OW) and ocean acidification (OA) are threatening coral reef ecosystems, with a bleak future forecast for reef-building corals, which are already experiencing global declines in abundance. In contrast, many coral reef sponge species are able to tolerate climate change conditions projected for 2100. To increase our understanding of the mechanisms underpinning this tolerance, we explored the lipid and fatty acid (FA) composition of four sponge species with differing sensitivities to climate change, experimentally exposed to OW and OA levels predicted for 2100, under two CO2 Representative Concentration Pathways. Sponges with greater concentrations of storage lipid, phospholipids, sterols and elevated concentrations of n-3 and n-6 long-chain polyunsaturated FA (LC PUFA), were more resistant to OW. Such biochemical constituents likely contribute to the ability of these sponges to maintain membrane function and cell homeostasis in the face of environmental change. Our results suggest that n-3 and n-6 LC PUFA are important components of the sponge stress response potentially via chain elongation and the eicosanoid stress-signalling pathways. The capacity for sponges to compositionally alter their membrane lipids in response to stress was also explored using a number of specific homeoviscous adaptation (HVA) indicators. This revealed a potential mechanism via which additional CO2 could facilitate the resistance of phototrophic sponges to thermal stress through an increased synthesis of membrane-stabilizing sterols. Finally, OW induced an increase in FA unsaturation in phototrophic sponges but a decrease in heterotrophic species, providing support for a difference in the thermal response pathway between the sponge host and the associated photosymbionts. Here we have shown that sponge lipids and FA are likely to be an important component of the sponge stress response and may play a role in facilitating sponge survival under future climate conditions. |
英文关键词 | climate change coral reef fatty acid heterotroph lipid mechanism ocean acidification ocean warming phototroph porifera |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000437281500032 |
WOS关键词 | STABLE CARBON ISOTOPES ; MEMBRANE-LIPIDS ; THERMAL-STRESS ; MARINE SPONGES ; CORAL-REEFS ; HOMEOVISCOUS ADAPTATION ; OCEAN ACIDIFICATION ; LONG-CHAIN ; TEMPERATURE ; STEROLS |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/17597 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Victoria Univ Wellington, Sch Biol Sci, Wellington, New Zealand; 2.Australian Inst Marine Sci, Townsville, Qld, Australia; 3.Univ Queensland, Australian Ctr Ecogen, Brisbane, Qld, Australia; 4.Deakin Univ, Sch Life & Environm Sci, Geelong, Vic, Australia |
推荐引用方式 GB/T 7714 | Bennett, Holly,Bell, James J.,Davy, Simon K.,et al. Elucidating the sponge stress response; lipids and fatty acids can facilitate survival under future climate scenarios[J]. GLOBAL CHANGE BIOLOGY,2018,24(7):3130-3144. |
APA | Bennett, Holly,Bell, James J.,Davy, Simon K.,Webster, Nicole S.,&Francis, David S..(2018).Elucidating the sponge stress response; lipids and fatty acids can facilitate survival under future climate scenarios.GLOBAL CHANGE BIOLOGY,24(7),3130-3144. |
MLA | Bennett, Holly,et al."Elucidating the sponge stress response; lipids and fatty acids can facilitate survival under future climate scenarios".GLOBAL CHANGE BIOLOGY 24.7(2018):3130-3144. |
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