https://www.ahs.ac.cn/images/0513-353X/images/top-banner1.jpg|#|苹果
https://www.ahs.ac.cn/images/0513-353X/images/top-banner2.jpg|#|甘蓝
https://www.ahs.ac.cn/images/0513-353X/images/top-banner3.jpg|#|菊花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner4.jpg|#|灵芝
https://www.ahs.ac.cn/images/0513-353X/images/top-banner5.jpg|#|桃
https://www.ahs.ac.cn/images/0513-353X/images/top-banner6.jpg|#|黄瓜
https://www.ahs.ac.cn/images/0513-353X/images/top-banner7.jpg|#|蝴蝶兰
https://www.ahs.ac.cn/images/0513-353X/images/top-banner8.jpg|#|樱桃
https://www.ahs.ac.cn/images/0513-353X/images/top-banner9.jpg|#|观赏荷花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner10.jpg|#|菊花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner11.jpg|#|月季
https://www.ahs.ac.cn/images/0513-353X/images/top-banner12.jpg|#|菊花

园艺学报 ›› 2014, Vol. 41 ›› Issue (8): 1591-1600.

• 蔬菜 • 上一篇    下一篇

高温和加富CO2温室中黄瓜Rubisco活化酶与光合作用的关系

潘 璐,刘杰才,李晓静,宋 阳,张之为,马立国,崔世茂*   

  1. (内蒙古农业大学农学院,呼和浩特 010019)
  • 收稿日期:2014-03-05 出版日期:2014-08-25 发布日期:2014-08-25
  • 基金资助:
    国家自然科学基金项目(31060269);内蒙古自治区科技计划项目(20110710);教育部博士点基金项目(20101515110005)

Correlation Between Rubisco Activase and Photosynthesis of Cucumber in Greenhouse Under High Temperature and Elevated CO2

PAN Lu,LIU Jie-cai,LI Xiao-jing,SONG Yang,ZHANG Zhi-wei,MA Li-guo,and CUI Shi-mao*   

  1. (College of Agronomy,Inner Mongolia Agricultural University,Hohhot 010019,China)
  • Received:2014-03-05 Online:2014-08-25 Published:2014-08-25

摘要: 以温室嫁接黄瓜为试材,研究高温和加富CO2条件下叶片净光合速率、Rubisco活性、Rubisco活化酶活性、蒸腾速率、胞间CO2浓度的日变化规律及其相互关系。旨为高温季节温室黄瓜高产优质栽培提供理论依据和实践支持。研究结果表明:①高温 + CO2条件下,净光合速率、Rubisco活性和Rubisco活化酶活性存在明显的光合日变化,均呈双峰曲线,存在“午休”现象,但与对照相比全天的数值明显增加,其中净光合速率在10:00、11:00、12:00、13:00、14:00和15:00时分别比对照高22%、47%、37%、27%、39%和28%;Rubisco活性在9:00、10:00、11:00、12:00、13:00、14:00和15:00时分别比对照高51%、69%、70%、42%、77%、61%和59%;RCA活性在8:00、9:00、10:00、11:00、12:00、13:00、14:00、15:00和16:00时比对照分别升高了40%、39%、23%、41%、43%、31%、60%、60%和54%;② Rubisco活化酶对光合速率的直接影响较小,其本质是调节Rubisco活性,从而影响光合作用;③高温 + CO2可以有效提高Rubisco活化酶活力以及胞间CO2浓度,从而提高光合速率。

关键词: 黄瓜, 高温, 加富CO2, Rubisco活化酶, 光合作用

Abstract: The diurnal changes of photosynthetic rate,Rubisco activity,Rubisco activase(RAC)activity,transpiration rate and intercellular CO2 concentration of cucumber leaves in greenhouse were studied under high temperature and elevated CO2,and the relationship between photosynthetic rate and Rubisco activity,Rubisco activase activity were also analyzed. Main results are as follows:①The photosynthetic rate,Rubisco activity and Rubisco activase activity showed distinct diurnal changes under high temperature and elevated CO2. Compared with the control,high temperature and elevated CO2 led to a remarkable increase in values of the photosynthetic rate,Rubisco activity and Rubisco activase activity. ②Rubisco activase activity had an effect on photosynthetic rate by adjusting Rubisco activity. ③Rubiscoactivase activity and intercellular CO2 concentration were increased by high temperature and elevated CO2,thus photosynthetic rate was improved.

Key words: cucumber, high temperature, elevated CO2, Rubisco activase, photosynthetic rate

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