Institutional Repository of Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences
Effects of the heavy metal cadmium on photosynthetic activity and the xanthophyll cycle in Phaeodactylum tricornutum | |
Ji Yan1; Xie Xiujun2,3; Wang Guangce2,3 | |
2018-11-01 | |
发表期刊 | JOURNAL OF OCEANOLOGY AND LIMNOLOGY |
ISSN | 2096-5508 |
卷号 | 36期号:6页码:2194-2201 |
通讯作者 | Wang Guangce(gcwang@qdio.ac.cn) |
摘要 | Cadmium (Cd) is one of the most common and widespread heavy metals in the environment. Cd has adverse effects on photosynthesis that are countered by photosystem I (PSI) and photosystem II (PSII); however, the protective responses of these photosystems to heavy metal stress remain unclear. Using the model diatom Phaeodactylum tricornutum, a biological indicator that is widely used to assess the impact of environmental toxins, we simultaneously measured the effects of Cd on PSI and PSII and examined the levels of pigments in response to high light treatments before and after Cd exposure. Cd significantly reduced the quantum yield and electron transport rates of PSI and PSII. The quantum yield of non-photochemical energy dissipation in PSI due to donor side limitation increased faster than the quantum yield due to acceptor side limitation. The Cd treatment activated the P. tricornutum xanthophyll cycle under artificial light conditions, as indicated by an increased diatoxanthin content. Xanthophyll is important for photoprotection; therefore, the accumulation of diatoxanthin may down-regulate PSII activities to reduce oxidative damage. Together, our results suggest that the rapid reduction in PSII activities following Cd exposure is an adaptive response to heavy metal stress that reflects the variable exposure to external stressors in the native P. tricornutum environment. |
关键词 | heavy metal cadmiwn photosystem I photosystem II Phaeodactylum tricornutum |
DOI | 10.1007/s00343-019-7160-y |
收录类别 | SCI |
语种 | 英语 |
资助项目 | National Natural Science Foundation of China[41506172] ; International S&T Cooperation Program of China[2015DFG32160] ; National Natural Science Foundation of China[41506172] ; International S&T Cooperation Program of China[2015DFG32160] |
WOS研究方向 | Marine & Freshwater Biology ; Oceanography |
WOS类目 | Limnology ; Oceanography |
WOS记录号 | WOS:000454629000023 |
出版者 | SCIENCE PRESS |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.qdio.ac.cn/handle/337002/155923 |
专题 | 实验海洋生物学重点实验室 |
通讯作者 | Wang Guangce |
作者单位 | 1.Qingdao Tech Coll, Sch Biol & Chem Engn, Qingdao 266555, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao 266071, Peoples R China |
通讯作者单位 | 实验海洋生物学重点实验室 |
推荐引用方式 GB/T 7714 | Ji Yan,Xie Xiujun,Wang Guangce. Effects of the heavy metal cadmium on photosynthetic activity and the xanthophyll cycle in Phaeodactylum tricornutum[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2018,36(6):2194-2201. |
APA | Ji Yan,Xie Xiujun,&Wang Guangce.(2018).Effects of the heavy metal cadmium on photosynthetic activity and the xanthophyll cycle in Phaeodactylum tricornutum.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,36(6),2194-2201. |
MLA | Ji Yan,et al."Effects of the heavy metal cadmium on photosynthetic activity and the xanthophyll cycle in Phaeodactylum tricornutum".JOURNAL OF OCEANOLOGY AND LIMNOLOGY 36.6(2018):2194-2201. |
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