Effects of solar UV radiation on diurnal photosynthetic performance and growth of Gracilaria lemaneiformis (Rhodophyta)
文献类型：期刊论文
| 作者 | Gao, Kunshan1,2,3; Xu, Juntian1 |
| 刊名 | EUROPEAN JOURNAL OF PHYCOLOGY
 |
| 出版日期 | 2008 |
| 卷号 | 43期号:3页码:297-307 |
| 关键词 | photosynthesis Gracilaria lemaneiformis growth red alga UV-absorbing compounds UV radiation |
| ISSN号 | 0967-0262 |
| 通讯作者 | Gao, K, Shantou Univ, Inst Marine Biol, Shantou 515063, Guangdong, Peoples R China |
| 中文摘要 | Previous studies on diurnal photosynthesis of macroalgal species have shown that at similar levels of photosynthetically active radiation (PAR, 400-700nm) the photosynthetic rate is lower in the afternoon than in the morning. However, the impacts of solar ultraviolet radiation (UVR, 280-400nm) have been little considered. We investigated the diurnal photosynthetic behaviour of the economically significant red alga Gracilaria lemaneiformis in the absence or presence of UV-A+B or UV-B with a flow-through system. While UV-A and UV-B, respectively, inhibited noontime Pmax by 22% and 14% on the sunny days, UV-A during sunrise (PAR below about 50Wm-2) increased the net photosynthesis by about 8% when compared with PAR alone. UV-A + PAR also resulted in higher apparent photosynthetic efficiency in the morning than in the afternoon period than PAR alone. Nevertheless, integrated daytime photosynthetic production under solar PAR alone was higher than with either PAR + UV-A+B or PAR + UV-A. Relative growth rate in the long term (9 days) matched the integrated photosynthetic production in that UV-A led to 9-15% and UV-B to 19-22% reduction, respectively. UV-absorbing compounds were found to be higher in the thalli exposed to PAR+UV-A+B than under PAR alone, reflecting a protective response to UVR. |
| 英文摘要 | Previous studies on diurnal photosynthesis of macroalgal species have shown that at similar levels of photosynthetically active radiation (PAR, 400-700nm) the photosynthetic rate is lower in the afternoon than in the morning. However, the impacts of solar ultraviolet radiation (UVR, 280-400nm) have been little considered. We investigated the diurnal photosynthetic behaviour of the economically significant red alga Gracilaria lemaneiformis in the absence or presence of UV-A+B or UV-B with a flow-through system. While UV-A and UV-B, respectively, inhibited noontime Pmax by 22% and 14% on the sunny days, UV-A during sunrise (PAR below about 50Wm-2) increased the net photosynthesis by about 8% when compared with PAR alone. UV-A + PAR also resulted in higher apparent photosynthetic efficiency in the morning than in the afternoon period than PAR alone. Nevertheless, integrated daytime photosynthetic production under solar PAR alone was higher than with either PAR + UV-A+B or PAR + UV-A. Relative growth rate in the long term (9 days) matched the integrated photosynthetic production in that UV-A led to 9-15% and UV-B to 19-22% reduction, respectively. UV-absorbing compounds were found to be higher in the thalli exposed to PAR+UV-A+B than under PAR alone, reflecting a protective response to UVR. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | Plant Sciences; Marine & Freshwater Biology |
| 类目[WOS] | Plant Sciences ; Marine & Freshwater Biology |
| 研究领域[WOS] | Plant Sciences ; Marine & Freshwater Biology |
| 关键词[WOS] | KELP MACROCYSTIS-PYRIFERA ; ANTARCTIC MARINE ORGANISMS ; ULVA-PERTUSA CHLOROPHYTA ; ALGA ASCOPHYLLUM-NODOSUM ; ULTRAVIOLET-B RADIATION ; INDUCED DNA-DAMAGE ; AMINO-ACIDS ; NATURAL SUNLIGHT ; DEPTH-ZONATION ; MACROALGAE |
| 收录类别 | SCI |
| 资助信息 | Ministry of Science and Technology [2006AA10A413]; Ministry of Education [308015] |
| 语种 | 英语 |
| WOS记录号 | WOS:000259086000006 |
| 公开日期 | 2010-10-13 |
| 源URL | [http://ir.ihb.ac.cn/handle/152342/8014]  |
| 专题 | 水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文 |
| 作者单位 | 1.Shantou Univ, Inst Marine Biol, Shantou 515063, Guangdong, Peoples R China 2.Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen 361005, Peoples R China 3.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, Kunshan,Xu, Juntian. Effects of solar UV radiation on diurnal photosynthetic performance and growth of Gracilaria lemaneiformis (Rhodophyta)[J]. EUROPEAN JOURNAL OF PHYCOLOGY,2008,43(3):297-307. |
| APA | Gao, Kunshan,&Xu, Juntian.(2008).Effects of solar UV radiation on diurnal photosynthetic performance and growth of Gracilaria lemaneiformis (Rhodophyta).EUROPEAN JOURNAL OF PHYCOLOGY,43(3),297-307. |
| MLA | Gao, Kunshan,et al."Effects of solar UV radiation on diurnal photosynthetic performance and growth of Gracilaria lemaneiformis (Rhodophyta)".EUROPEAN JOURNAL OF PHYCOLOGY 43.3(2008):297-307. |
入库方式： OAI收割
来源：水生生物研究所
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