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茶叶科学 ›› 2009, Vol. 29 ›› Issue (3): 207-211.doi: 10.13305/j.cnki.jts.2009.3.005

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氟对茶叶品质成分代谢的的影响

李琼1,2, 阮建云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:2009-02-27 修回日期:2009-03-09 出版日期:2009-06-15 发布日期:2019-09-06
  • 通讯作者: * jruan@mail.tricaas.com
  • 作者简介:李琼(1983— ),女,陕西咸阳人,硕士研究生,主要从事茶树营养研究。
  • 基金资助:
    浙江省自然科学基金人才团队项目(R505085)、现代农业(茶叶)产业技术体系资助

Effects of Fluoride on the Metabolism of Tea Quality Components

LI Qiong1,2, RUAN Jian-yun1,*   

  1. 1. Tea Research Institute of Chinese Academy of Agricultural Sciences, Hangzhou 310008, China;
    2. Graduate School of Chinese Academy of Agricultural Sciences, Beijing 100081, China
  • Received:2009-02-27 Revised:2009-03-09 Online:2009-06-15 Published:2019-09-06

摘要: 通过盆栽试验研究氟了对茶树新梢生长和品质成分含量的影响。适量增加土壤氟水平能提高新梢产量,但在高氟水平下新梢产量明显下降。茶多酚、咖啡碱及儿茶素(EGCG等)的含量随土壤氟水平的增加而逐渐降低,高氟水平下新梢的游离氨基酸含量也显著下降,苯丙氨酸解氨酶(PAL)、谷氨酸合成酶(GOGAT)的活性也随土壤和茶树氟浓度的增加而下降,说明氟可能抑制茶树儿茶素的合成代谢和氮素代谢。上述结果表明,氟对茶树生长和品质成分的影响与氟水平有关,虽然低浓度氟对茶树生长有一定的促进作用,但高浓度氟抑制茶树生长和茶多酚、氨基酸等品质成分的代谢。

关键词: 茶树, 氟, 氨基酸, 茶多酚, 苯丙氨酸解氨酶, 谷氨酸合成酶

Abstract: Soil experiment was conducted to investigate the impact of fluoride on yield of young shoots and chemical ingredients related with tea quality. Production of young shoots was improved by modest increase in the soil fluoride levels while significantly decreased by higher F levels. The concentrations of total polyphenols, caffeine and catechins (EGCG, etc) were reduced by fluoride application. The concentrations of total free amino acid and some major components (theanine, glutamate and glutamine) in the young shoots were also decreased significantly by the highest F application. Activity of phenylalanine ammonia-lyase (PAL) and glutamate synthase (GOGAT) decreased with increasing fluoride levels. The results indicated that, though tea plant growth was improved by low level of fluoride, high levels of this element were detrimental to both growth and metabolism of chemical components such as catechins, caffeine and free amino acids.

Key words: tea plant, fluoride, amino acids, polyphenols, phenylalanine ammonia lyase, glutamate synthase

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