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The Effects of Elevated CO2 on the Microstructure and Ultrastructure of Leaves in Guzmania 'Denise'
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HUI Jun-ai, YE Qing-sheng*
(1.Guang Dong Key Lab of Biotechnolgy for Plant Development, College of Life Science, South China Normal University, Guangdong Guangzhou 510631, China; 2. College of Gardening and Horticulture,Yangtze University, Jingzhou 434025, Hubei, China)
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Abstract: The effects of CO2 concentration on the microstructure and ultrastructure of the leaves in Guzmania 'Denise' were compared following the exposure to ambient CO2 (CK: 360¡À30¦̀mol¡¤mol-1) and elevated (T1: 600¡À40¦̀mol¡¤mol-1, T2: 900¡À40¦̀mol¡¤mol-1) carbon dioxide concentration. The results indicated that under elevated CO2 concentration, the thickness of mesophyll cell, the numbers and size of chloroplast were increased obviously in treatment of elevated CO2 concentration, so as the starch grain of the chloroplast. But the ultrastructure of photosynthetic membrane in chloroplast was damaged.
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