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Effects of Irradiance and Temperature on the Photosynthesis and Vegetative Propagation of Caulerpa serrulata

查看全文 作　　者：Demao [1,3,4]Li;Guangce [1,2]Wang;Limei [3]Chen;Fang [1,4]Lü;Zonggen [5]Shen 高影响力作者 机构地区：[1]Key Laboratory of Experimental Marine Biology, Institute of Oceanology, the Chinese Academy of Sciences, Qingdao 266071, China;[2]College of Marine Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China;[3]Department of Food Science, Institute of Agriculture, Liaocheng University, Liaocheng 252059, China;[4]Graduate School, the Chinese Academy of Sciences, BeijJng 100039, ChJna;[5]College of Biology and Food Science, Changshu Institue of Technology, Changshu 215500, China高影响力机构 出　　处：《Journal of Integrative Plant Biology》索引2009年第51卷第2期,共8页高影响力期刊 基　　金：Supported by the National Natural Science Foundation of China (30830015);Project for Supporting the National Development (2006BAD09A04);the Hi-Tech Research and Development (863) Program of China (2006AA05Z112 and 2006AA10A413) 摘　　要：The photosynthetic oxygen evolution of Caulerpa serrulata was determined with oxygen electrodes. The effects of light and temperature on the growth and regeneration of fragmented C. serrulata thalli were analyzed. The regenerating rate and establishment of different sizes and portions of C. serrulata were studied. The results showed that the light saturation point of C. serrulata was 200 μmol photons/m2 per s and the optimum growth temperature was 25-30 -C. Under these conditions, the maximum photosynthetic oxygen evolution rate was 15.1 ± 0.29 mg O2/mg Chl a/h, the growth rate and elongation rate reached the highest values, 4.67 ± 0.09 mg FW/d and 0.78 ± 0.01 mm/d, respectively. The fragmented C. serrulata thalli was regenerated at 20-35 -C and survived at 15 -C and 200 μmol photons/m2 per s. A different survival rate was detected according to fragment size. All of these results indicated that C. serrulata was a candidate to become an invasive species if introduced into a new place. Therefore, we should pay more attention to C. serrulata for its potential threat to marine ecosystem when it is sold for aquarium use. 关 键 词：植物生理学 光合作用 代谢 呼吸
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