The roles of silicon in combating cadmium challenge in the Marine diatom Phaeodactylum tricornutum
文献类型：期刊论文
| 作者 | Ma, Jie6; Zhou, Beibei6; Tan, Qiaoguo3,5; Zhang, Li1,4; Pan, Ke |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2020 |
| 卷号 | 389页码:121903 |
| 关键词 | Metal toxicity Marine diatom Silicon Cadmium Cell wall |
| ISSN号 | 0304-3894 |
| DOI | 10.1016/j.jhazmat.2019.121903 |
| 英文摘要 | Marine phytoplankton possess a sophisticated homeostatic network to counteract metal toxicity. Changes in environmental conditions such as ambient nutrient concentrations can significantly impact their intrinsic metal sensitivity. In this study, we evaluated the role of silicon (Si) in counteracting cadmium (Cd) toxicity in the marine diatom Phaeodactylum tricornutum. We first demonstrated that Si enrichment dramatically enhanced Cd tolerance and changed the Cd accumulation in the diatom. Our modeling suggested that Si-enriched cells adsorbed more Cd but had a higher Cd elimination rate than the Si-starved cells. Examinations by atomic force microscopy and X-ray photoelectron spectroscopy revealed that the Si-enriched cells had better silification and more SiO- in the cell walls, which markedly lowered the surface potential of the diatom cells and allowed them to attract more Cd. Although the Si-enriched cells tended to have a high Cd burden when facing Cd stress, they suppressed the increase of intracellular Cd by both down-regulating the influx transporter ZIP and up-regulating the efflux transporter ATPase5-1B. Our study shows the significant roles Si plays in maintaining metal homeostasis and combating Cd challenge in marine diatoms. |
| 资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41676095, 41701578]; Key R&D Program of Guangxi Province [GUIKEAB18126075]; Science and Technology Innovation Commission of Shenzhen [JCYJ20180507182227257, JCYJ20170818091859147]; Guangdong Basic and Applied Basic Research Foundation [2019A1515011630]; Institution of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences [ISEE2018PY03] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41676095, 41701578]; Key R&D Program of Guangxi Province [GUIKEAB18126075]; Science and Technology Innovation Commission of Shenzhen [JCYJ20180507182227257, JCYJ20170818091859147]; Guangdong Basic and Applied Basic Research Foundation [2019A1515011630]; Institution of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences [ISEE2018PY03] |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18430]  |
| 专题 | 南海海洋研究所_中科院海洋生物资源可持续利用重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Peoples R China 2.Chinese Acad Sci, Innovat Acad South China Sea Ecol & Environm Engn, Guangzhou 510301, Peoples R China 3.Xiamen Univ, Coll Environm & Ecol, Key Lab Coastal & Wetland Ecosyst, Minist Educ, Xiamen 361102, Fujian, Peoples R China 4.Xiamen Univ, Ctr Marine Environm Chem & Toxicol, Xiamen 361102, Fujian, Peoples R China 5.Shenzhen Univ, Coll Optoelect Engn, Key Lab Optoelect Devices & Syst, Minist Educ & Guangdong Prov, Shenzhen 518060, Peoples R China 6.Shenzhen Univ, Inst Adv Study, Shenzhen 518060, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Jie,Zhou, Beibei,Tan, Qiaoguo,et al. The roles of silicon in combating cadmium challenge in the Marine diatom Phaeodactylum tricornutum[J]. JOURNAL OF HAZARDOUS MATERIALS,2020,389:121903. |
| APA | Ma, Jie,Zhou, Beibei,Tan, Qiaoguo,Zhang, Li,&Pan, Ke.(2020).The roles of silicon in combating cadmium challenge in the Marine diatom Phaeodactylum tricornutum.JOURNAL OF HAZARDOUS MATERIALS,389,121903. |
| MLA | Ma, Jie,et al."The roles of silicon in combating cadmium challenge in the Marine diatom Phaeodactylum tricornutum".JOURNAL OF HAZARDOUS MATERIALS 389(2020):121903. |
入库方式： OAI收割
来源：南海海洋研究所
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