Institutional Repository of Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences
| Combined effects of light intensity and NH (4) (+) -enrichment on growth, pigmentation, and photosynthetic performance of Ulva prolifera (Chlorophyta) | |
| Xu Zhiguang1,2,3,4; Wu Haiyi2,3; Zhan Dongmei2,3; Sun Fuxin2,3; Sun Jianzhang4; Wang Guangce1; Wu, HY (reprint author), Marine Biol Inst Shandong Prov, Qingdao 266002, Peoples R China. | |
| 2014-09-01 | |
| 发表期刊 | CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
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| 卷号 | 32期号:5页码:1016-1023 |
| 文章类型 | Article |
| 摘要 | The aim of this study was to investigate the effects of light intensity and enhanced nitrogen supply on the growth and photosynthesis of the green-tide macroalga, Ulva prolifera. Thalli of U. prolifera were grown in natural or NH (4) (+) -enriched seawater under two different light intensities for 7 days, and then the growth rate, pigmentation, and photosynthetic performance of the thalli were evaluated. The results show that the relative growth rate (RGR) was markedly higher under the high light level than under the low light level. Enrichment with NH (4) (+) enhanced the RGR under high light intensity, but did not affect RGR under low light intensity. In low light conditions, NH (4) (+) -enrichment resulted in a marked decrease in the maximal photosynthetic rate (P (m)) and the maximum carbon fixation rate (V (max)), but it did not affect the half saturation constant for carbon (K (0.5)) or the ratio of V (max) to K (0.5), which reflects the carbon acquisition efficiency. In high light conditions, P (m), K (0.5), and the dark respiration rate (R (d)) increased under NH (4) (+) enrichment, but V (max) and the V (max) / K (0.5) ratio decreased. Regardless of the light intensity, NH (4) (+) -enrichment did not affect the apparent photosynthetic efficiency (alpha), which reflects the ability of the alga to use light energy at low light levels. Under both low and high light intensities, the chlorophyll a (Chl a), chlorophyll b (Chl b), and carotenoids (Car) contents in thalli were higher in NH (4) (+) -enriched than in natural seawater, except that there was a decrease in the Chl b content of thalli in NH (4) (+) -enriched seawater under low light intensity. Therefore, NH (4) (+) enrichment improved the growth and photosynthetic performance of U. prolifera under high light intensity, but not under low light intensity. We discuss the possible mechanisms underlying these physiological responses. |
| 关键词 | Ulva Prolifera Low Light Ammonia Enrichment Growth Rate Photosynthesis Pigment |
| 学科领域 | Marine & Freshwater Biology ; Oceanography |
| DOI | 10.1007/s00343-014-3332-y |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000340879900006 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/24091 |
| 专题 | 实验海洋生物学重点实验室 |
| 通讯作者 | Wu, HY (reprint author), Marine Biol Inst Shandong Prov, Qingdao 266002, Peoples R China. |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Marine Biol Inst Shandong Prov, Qingdao 266002, Peoples R China 3.Macroalgae Engn Technol Ctr Qingdao, Qingdao 266002, Peoples R China 4.Yutian Grp, Wenzhou 325400, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Xu Zhiguang,Wu Haiyi,Zhan Dongmei,et al. Combined effects of light intensity and NH (4) (+) -enrichment on growth, pigmentation, and photosynthetic performance of Ulva prolifera (Chlorophyta)[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2014,32(5):1016-1023. |
| APA | Xu Zhiguang.,Wu Haiyi.,Zhan Dongmei.,Sun Fuxin.,Sun Jianzhang.,...&Wu, HY .(2014).Combined effects of light intensity and NH (4) (+) -enrichment on growth, pigmentation, and photosynthetic performance of Ulva prolifera (Chlorophyta).CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,32(5),1016-1023. |
| MLA | Xu Zhiguang,et al."Combined effects of light intensity and NH (4) (+) -enrichment on growth, pigmentation, and photosynthetic performance of Ulva prolifera (Chlorophyta)".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 32.5(2014):1016-1023. |
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