| 低浓度CO2对水车前和黑藻光合特性的影响 |
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| 引用本文： | 李兆波,李伟,顾舒平,操瑜,尹黎燕.低浓度CO2对水车前和黑藻光合特性的影响[J].植物科学学报,2011,29(2):226-233. |
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| 作者姓名： | 李兆波 李伟 顾舒平 操瑜 尹黎燕 |
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| 作者单位： | 1. 中国科学院武汉植物园, 武汉430074;2. 中国科学院研究生院, 北京100049;3. 湿地演化与生态恢复湖北省重点实验室, 武汉430074 |
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| 基金项目： | 国家自然科学基金项目(30700083)~~ |
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| 摘 要： | 本实验通过对沉水植物水车前(Ottelia alismoides)和黑藻(Hydrilla verticillata)进行低浓度CO2诱导,研究其光合特性的变化.研究显示,诱导后,水车前的PEPC/Rubisco活性比值由0.45上升到4.17,黑藻由0.47上升到4.17,两种植物的C4途径光合酶PEPC和NAD-M...
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| 关 键 词： | 低浓度CO2 水车前 黑藻 光合特性 光合酶 光合速率 氧抑制 叶绿素荧光 |
Effects of Low CO2 on Photosynthetic Characteristics of Ottelia alismoides and Hydrilla verticillata |
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| LI Zhao-Bo,LI Wei,GU Shu-Ping,CAO Yu,YIN Li-Yan.Effects of Low CO2 on Photosynthetic Characteristics of Ottelia alismoides and Hydrilla verticillata[J].Plant Science Journal,2011,29(2):226-233. |
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| Authors: | LI Zhao-Bo LI Wei GU Shu-Ping CAO Yu YIN Li-Yan |
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| Institution: | 1. Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China;2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China;3. Hubei Key Laboratory of Wetland Evolution & Ecological Restoration, Wuhan 430074, China |
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| Abstract: | Photosynthetic characteristics of Ottelia alismoides and Hydrilla verticillata were studied after the two species were incubated under low CO2 conditions.The PEPC/Rubisco ratio of O.alismoides increased from 0.45 to 4.17 and of H.verticillata increased from 0.47 to 4.17 after low CO2 induction.The activity of PEPC and NAD-ME increased more than 10-fold and other C4 enzymes such as NAD-MDH and PPDK also increased significantly after low CO2 induction.Other photosynthetic characteristics also changed significantly.The net photosynthetic rate of O.alismoides and H.verticillata increased by 50.8% and 74.1%,respectively,and the oxygen inhibition on photosynthetic rate of the two species decreased to 35% and 60%,respectively,after low CO2 induction.The chlorophyll fluorescence parameters also changed after low CO2 induction.All these facts indicated that photosynthetic carbon assimilation of O.alismoides and H.verticillata might shift from C3 to C4 after low CO2 induction. |
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| Keywords: | Low CO2 Ottelia alismoides Hydrilla verticillata Photosynthetic characteristics Photosynthetic enzymes Photosynthesis rate O2 inhibition Chlorophyll fluorescence |
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