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茶叶科学 ›› 2018, Vol. 38 ›› Issue (3): 271-280.doi: 10.13305/j.cnki.jts.2018.03.007

• • 上一篇    下一篇

秋茶光合作用与品质成分变化的分析

张兰1, 魏吉鹏1,2, 沈晨1,2, 颜鹏1, 张丽平1, 李鑫1,*, 韩文炎1,*   

  1. 1. 中国农业科学院茶叶研究所,浙江 杭州 310008;
    2. 中国农业科学院研究生院,北京 100081
  • 收稿日期:2017-09-11 修回日期:2017-11-10 出版日期:2018-06-15 发布日期:2019-08-28
  • 通讯作者: *
  • 作者简介:张兰,女,硕士,实习员,主要从事茶栽培与生理生化研究。
  • 基金资助:
    国家重点研发计划政府间国际科技创新合作重点专项(2017YFE0107500)、中国农业科学院科技创新工程(CAAS-ASTIP-2014-TRICAAS)、中国农业科学院茶叶研究所基本科研业务费专项项目(1610212016025)

Analysis of the Photosynthesis and Quality Components Changes in Autumn Tea

ZHANG Lan1, WEI Jipeng1,2, SHEN Chen1,2, YAN Peng1, ZHANG Liping1, LI Xin1,*, HAN Wenyan1,*   

  1. 1. Tea Research Institute, Chinese Academy of Agricultural Science, Hangzhou 310008, China;
    2. Graduate School of Chinese Academy of Agricultural Sciences, Beijing 100081, China
  • Received:2017-09-11 Revised:2017-11-10 Online:2018-06-15 Published:2019-08-28

摘要: 以茶树品种龙井43为材料,测定8月19日和9月23日不同时间点茶树冠层处光强、叶片温度、光合参数、品质成分含量及品质成分合成基因表达,初步明确光强、叶片温度对秋茶光合作用及三者对秋茶品质成分积累和相关合成基因转录水平的影响。结果表明,秋茶叶片温度以及叶肉细胞光合活性是影响净光合速率的关键原因,并且叶片温度可能通过调控儿茶素合成基因CsPALCsF35HCsANSCsUFGT及氨基酸合成基因CsGSCsGOGATCsTS1表达来影响秋茶茶多酚、氨基酸含量。另外,秋茶冠层处光强和净光合速率与部分品质相关合成基因的表达水平具有显著相关性。

关键词: 秋茶, 光强, 叶片温度, 光合作用, 品质成分, 基因表达

Abstract: The time courses of different indexes, including luminous intensity in the canopy, leaf temperature, photosynthetic parameters, quality component contents and the expression of genes related to quality component biosynthesis on August 19th and September 23th were measured in Longjing 43 (Camellia sinensis cv. Longjing 43). Using the results above, the effects of luminous intensity and leaf temperature on the tea photosynthesis and the influence of luminous intensity, leaf temperature and net photosynthesis rate on the accumulation of quality components and the transcription levels of biosynthetic genes could be confirmed preliminary. The results suggested that leaf temperature and photosynthetic activity of mesophyll cells were important physiological factors to affect the net photosynthesis rate of autumn tea. Moreover, the leaf temperature might influence the biosynthesis and accumulation of catechins and amino acids in autumn tea by regulating the expression of catechins biosynthetic genes, such as CsPAL, CsF35H, CsANS, CsUFGT and amino acid biosynthetic genes, including CsGS, CsGOGAT and CsTS1. Otherwise, the luminous intensity and the net photosynthesis rate of autumn tea were significantly correlated with the expression levels of genes related to catechin, amino acid and caffeine biosynthesis.

Key words: autumn tea, luminous intensity, leaf temperature, photosynthesis, quality components, gene expression

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