Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14467 |
Ocean acidification increases iodine accumulation in kelp-based coastal food webs | |
Xu, Dong1,2; Brennan, Georgina3; Xu, Le1; Zhang, Xiao W.1; Fan, Xiao1; Han, Wen T.1; Mock, Thomas4; McMinn, Andrew5,6; Hutchins, David A.7; Ye, Naihao1,2 | |
2019-02-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2019 |
卷号 | 25期号:2页码:629-639 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Wales; England; Australia; USA |
英文摘要 | Kelp are main iodine accumulators in the ocean, and their growth and photosynthesis are likely to benefit from elevated seawater CO2 levels due to ocean acidification. However, there are currently no data on the effects of ocean acidification on iodine metabolism in kelp. As key primary producers in coastal ecosystems worldwide, any change in their iodine metabolism caused by climate change will potentially have important consequences for global geochemical cycles of iodine, including iodine levels of coastal food webs that underpin the nutrition of billions of humans around the world. Here, we found that elevated pCO(2) enhanced growth and increased iodine accumulation not only in the model kelp Saccharina japonica using both short-term laboratory experiment and long-term in situ mesocosms, but also in several other edible and ecologically significant seaweeds using long-term in situ mesocosms. Transcriptomic and proteomic analysis of S. japonica revealed that most vanadium-dependent haloperoxidase genes involved in iodine efflux during oxidative stress are down-regulated under increasing pCO(2), suggesting that ocean acidification alleviates oxidative stress in kelp, which might contribute to their enhanced growth. When consumed by abalone (Haliotis discus), elevated iodine concentrations in S. japonica caused increased iodine accumulation in abalone, accompanied by reduced synthesis of thyroid hormones. Thus, our results suggest that kelp will benefit from ocean acidification by a reduction in environmental stress however; iodine levels, in kelp-based coastal food webs will increase, with potential impacts on biogeochemical cycles of iodine in coastal ecosystems. |
英文关键词 | iodine metabolism kelp ocean acidification Saccharina japonica thyroid hormone vanadium-dependent haloperoxidase |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000456028900020 |
WOS关键词 | LAMINARIA-DIGITATA ; OXIDATIVE BURST ; CLIMATE-CHANGE ; BROWN ; IMPACTS ; ALGA ; CO2 ; BROMOPEROXIDASE ; RESPONSES ; PATTERNS |
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/17547 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Qingdao, Peoples R China; 2.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Marine Fisheries Sci & Food Prod Proc, Qingdao, Peoples R China; 3.Bangor Univ, Sch Biol Sci, Mol Ecol & Fisheries Genet Lab, Bangor, Gwynedd, Wales; 4.Univ East Anglia, Sch Environm Sci, Norwich, Norfolk, England; 5.Univ Tasmania, Inst Marine & Antarctic Studies, Hobart, Tas, Australia; 6.Ocean Univ China, Fisheries Coll, Qingdao, Peoples R China; 7.Univ Southern Calif, Dept Biol Sci, Los Angeles, CA USA |
推荐引用方式 GB/T 7714 | Xu, Dong,Brennan, Georgina,Xu, Le,et al. Ocean acidification increases iodine accumulation in kelp-based coastal food webs[J]. GLOBAL CHANGE BIOLOGY,2019,25(2):629-639. |
APA | Xu, Dong.,Brennan, Georgina.,Xu, Le.,Zhang, Xiao W..,Fan, Xiao.,...&Ye, Naihao.(2019).Ocean acidification increases iodine accumulation in kelp-based coastal food webs.GLOBAL CHANGE BIOLOGY,25(2),629-639. |
MLA | Xu, Dong,et al."Ocean acidification increases iodine accumulation in kelp-based coastal food webs".GLOBAL CHANGE BIOLOGY 25.2(2019):629-639. |
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