Responses of dark respiration in the light to desiccation and temperature in the intertidal macroalga, Ulva lactuca (Chorophyta) during emersion
文献类型：期刊论文
| 作者 | Zou, Dinghui; Gao, Kunshan; Xia, Jianrong; Xu, Zhiguang; Zhang, Xin; Liu, Shuxia |
| 刊名 | PHYCOLOGIA
 |
| 出版日期 | 2007-07-01 |
| 卷号 | 46期号:4页码:363-370 |
| 关键词 | dark respiration desiccation emersion intertidal macroalgae Kok effect temperature Ulva |
| ISSN号 | 0031-8884 |
| 通讯作者 | Zou, DH, Shantou Univ, Inst Marine Biol, Ctr Sci, Guangdong 515063, Peoples R China |
| 中文摘要 | Dark respiration (nonphotorespiratory mitochondrial CO2 release) in the light (R-L) of the intertidal macroalga Ulva lactuca (Chorophyta) during emersion was investigated with respect to its response to variations in temperature and desiccation. R-L was estimated by CO2 gas-exchange analysis using the Kok effect method, whereas dark respiration in darkness (R-D) was determined from CO2 release at zero light. Rates of R, were significantly and consistently lower than those of R-D in emersed U. lactuca across all the temperature and desiccation levels measured. This demonstrated that dark respiration was partially depressed in the light, with the percentage inhibition ranging from 32 to 62%. Desiccation exerted a negative effect on R-L and R-D at a high temperature, 33 degrees C, whereas it had much less effect on respiration at low and moderate temperatures, 23 and 28 degrees C. In general, R-L and R-D increased with increasing temperature in U. lactuca during all stages of emersion but responded less positively to temperature change with increasing desiccation. Additionally, the Q(10) value (i.e. the proportional increase of respiration for each 10 degrees C rise in temperature) for R-L calculated over the temperature range of 23 to 33 degrees C was significantly higher than that for R-D in U. lactuca during the initial stages of emersion. Respiratory carbon loss as a percentage of gross photosynthetic carbon gain increased with increasing temperature and/or desiccation but was significantly reduced when estimated using R-L rather than R-D. It is suggested that measurements of R-L and how it changes in a variable environment are as important as estimates of R-D and photosynthesis in determining simultaneous balance between photosynthetic carbon uptake and respiratory carbon loss and in modeling the net daily carbon gain for an intertidal macroalga. |
| 英文摘要 | Dark respiration (nonphotorespiratory mitochondrial CO2 release) in the light (R-L) of the intertidal macroalga Ulva lactuca (Chorophyta) during emersion was investigated with respect to its response to variations in temperature and desiccation. R-L was estimated by CO2 gas-exchange analysis using the Kok effect method, whereas dark respiration in darkness (R-D) was determined from CO2 release at zero light. Rates of R, were significantly and consistently lower than those of R-D in emersed U. lactuca across all the temperature and desiccation levels measured. This demonstrated that dark respiration was partially depressed in the light, with the percentage inhibition ranging from 32 to 62%. Desiccation exerted a negative effect on R-L and R-D at a high temperature, 33 degrees C, whereas it had much less effect on respiration at low and moderate temperatures, 23 and 28 degrees C. In general, R-L and R-D increased with increasing temperature in U. lactuca during all stages of emersion but responded less positively to temperature change with increasing desiccation. Additionally, the Q(10) value (i.e. the proportional increase of respiration for each 10 degrees C rise in temperature) for R-L calculated over the temperature range of 23 to 33 degrees C was significantly higher than that for R-D in U. lactuca during the initial stages of emersion. Respiratory carbon loss as a percentage of gross photosynthetic carbon gain increased with increasing temperature and/or desiccation but was significantly reduced when estimated using R-L rather than R-D. It is suggested that measurements of R-L and how it changes in a variable environment are as important as estimates of R-D and photosynthesis in determining simultaneous balance between photosynthetic carbon uptake and respiratory carbon loss and in modeling the net daily carbon gain for an intertidal macroalga. |
| 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] | PYRUVATE-DEHYDROGENASE COMPLEX ; LEAF RESPIRATION ; PLANT RESPIRATION ; COLPOMENIA-PEREGRINA ; ALTERNATIVE OXIDASE ; THERMAL-ACCLIMATION ; XANTHIUM-STRUMARIUM ; FUCUS-VESICULOSUS ; MARINE MACROALGAE ; CO2 CONCENTRATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000247855900002 |
| 公开日期 | 2010-10-13 |
| 源URL | [http://ir.ihb.ac.cn/handle/152342/8500]  |
| 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, Ctr Sci, Guangdong 515063, Peoples R China 2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zou, Dinghui,Gao, Kunshan,Xia, Jianrong,et al. Responses of dark respiration in the light to desiccation and temperature in the intertidal macroalga, Ulva lactuca (Chorophyta) during emersion[J]. PHYCOLOGIA,2007,46(4):363-370. |
| APA | Zou, Dinghui,Gao, Kunshan,Xia, Jianrong,Xu, Zhiguang,Zhang, Xin,&Liu, Shuxia.(2007).Responses of dark respiration in the light to desiccation and temperature in the intertidal macroalga, Ulva lactuca (Chorophyta) during emersion.PHYCOLOGIA,46(4),363-370. |
| MLA | Zou, Dinghui,et al."Responses of dark respiration in the light to desiccation and temperature in the intertidal macroalga, Ulva lactuca (Chorophyta) during emersion".PHYCOLOGIA 46.4(2007):363-370. |
入库方式： OAI收割
来源：水生生物研究所
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