naa a22 4500 510754503 CHVBK 20180411083117.0 cr unu---uuuuu 180411e20130801xx s 000 0 eng 10.1007/s13131-013-0342-0 doi (NATIONALLICENCE)springer-10.1007/s13131-013-0342-0 Dynamics of nonstructural carbohydrates in seagrass Thalassia hemprichii and its response to shading [Elektronische Daten] [Zhijian Jiang, Xiaoping Huang, Jingping Zhang] 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. The Chinese Society of Oceanography and Springer-Verlag Berlin Heidelberg, 2013 Thalassia hemprichii nationallicence nonstructural carbohydrates nationallicence Xincun Bay nationallicence dynamics nationallicence shade nationallicence Jiang Zhijian Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 510301, Guangzhou, China aut Huang Xiaoping Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 510301, Guangzhou, China aut Zhang Jingping Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 510301, Guangzhou, China aut Acta Oceanologica Sinica Springer Berlin Heidelberg 32/8(2013-08-01), 61-67 0253-505X 32:8<61 2013 32 13131 https://doi.org/10.1007/s13131-013-0342-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s13131-013-0342-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Jiang Zhijian Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 510301, Guangzhou, China aut NATIONALLICENCE 700 1- Huang Xiaoping Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 510301, Guangzhou, China aut NATIONALLICENCE 700 1- Zhang Jingping Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 510301, Guangzhou, China aut NATIONALLICENCE 773 0- Acta Oceanologica Sinica Springer Berlin Heidelberg 32/8(2013-08-01), 61-67 0253-505X 32:8<61 2013 32 13131 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer