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学科主题: Oceanography
题名: Dynamics of nonstructural carbohydrates in seagrass Thalassia hemprichii and its response to shading
作者: [Jiang Zhijian ; Huang Xiaoping ; Zhang Jingping] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Guangdong, Peoples R China ; [Jiang Zhijian ; Zhang Jingping] Chinese Acad Sci, Trop Marine Biol Res Stn Hainan, Sanya 572200, Peoples R China
通讯作者: xphuang@scsio.ac.cn
关键词: Thalassia hemprichii ; nonstructural carbohydrates ; Xincun Bay ; dynamics ; shade
刊名: ACTA OCEANOLOGICA SINICA
发表日期: 2013
卷: 32, 期:8, 页:61-67
部门归属: LMB
资助者: Foundation item: The National Natural Science Foundation of China under contract Nos 41076069 and 40776086; the Project of Environmental Quality Evaluation of Seagrass Bed in South China Sea under contract No. DOMEP (MEA)-01-03; the Public Science and Technology Research Funds Projects of Ocean under contract No. 201305030; the Knowledge Innovation Program of the Chinese Academy of Sciences under contract No. SQ201219.
摘要: A field survey was performed to examine nonstructural carbohydrate (NSC) dynamics in seagrass Thalassia hemprichii at the Xincun Bay in southern China. An indoor experiment to investigate the response of NSC in T. hemprichii to shade was conducted. Belowground tissue of T. hemprichii was the dominant site of NSC reserves, and soluble sugar was the primary storage compound. The starch content of belowground tissue was lower in high intertidal areas than in low intertidal areas, indicating that the longer air exposure in high intertidal areas resulted in less NSC synthesis and less accumulation of NSC in T. hemprichii. The lowest level of soluble sugar and its proportion to NSC in belowground tissue were observed near the cage culture area, where the nutrient concentration in water and sediment was the highest; while the highest level of that was observed near the coastal shrimp farm, Where salinity was the lowest. Soluble sugar in belowground tissue showed the following trend: summer > spring > winter > autumn. This corresponded to seasonal changes in the intensity of light. Leaf sugar accumulated during the autumn-winter period, providing a carbon and energy source for flower bud formation and seed germination. Short-term shading decreased NSC accumulation. Collectively, these results suggest that nutrient enrichment, freshwater discharge and exposure to air affect NSC dynamics in T. hemprichii. Light intensity, flower bud formation, and seed germination were all found to induce seasonal variations in NSC in T. hemprichii.
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000322575600008
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/11003
Appears in Collections:中科院海洋生物资源可持续利用重点实验室_期刊论文

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[Jiang Zhijian; Huang Xiaoping; Zhang Jingping] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Guangdong, Peoples R China; [Jiang Zhijian; Zhang Jingping] Chinese Acad Sci, Trop Marine Biol Res Stn Hainan, Sanya 572200, Peoples R China.Dynamics of nonstructural carbohydrates in seagrass Thalassia hemprichii and its response to shading,ACTA OCEANOLOGICA SINICA,2013,32(8):61-67
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