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林业科学 ›› 2014, Vol. 50 ›› Issue (8): 168-173.doi: 10.11707/j.1001-7488.20140824

• 研究简报 • 上一篇    下一篇

稀土元素对红松幼苗松多酚含量及PAL,C4H活性的影响

刘冉1, 王振宇1,2, 黄雨洋1, 邓心蕊1, 尹红力1   

  1. 1. 东北林业大学林学院 哈尔滨 150040;
    2. 哈尔滨工业大学食品科学与工程学院 哈尔滨 150090
  • 收稿日期:2013-10-10 修回日期:2013-11-07 出版日期:2014-08-25 发布日期:2014-07-31
  • 基金资助:

    国家自然科学基金项目(31170510)。

Effects of Rare Earth Elements La3+ And Eu3+ on the Polyphenols Contents and PAL,C4H Activities of Pinus koraiensis Seedlings

Liu Ran1, Wang Zhenyu1,2, Huang Yuyang1, Deng Xinrui1, Yin Hongli1   

  1. 1. College of Forestry, Northeast Forestry University Harbin 150040;
    2. School of Food Science and Engineering, Harbin Institute of Technology Harbin 150090
  • Received:2013-10-10 Revised:2013-11-07 Online:2014-08-25 Published:2014-07-31
  • Contact: 王振宇

关键词: 红松幼苗, 稀土元素, 多酚, 苯丙氨酸转氨酶, 肉桂酸4-羟化酶

Abstract:

Pinus koraiensis seedlings were used as experimental material to study the effects of rare earth elements La and Eu on the growth, polyphenols contents and PAL, C4H activities of P. koraiensis seedlings. The results showed that rare earth elements La and Eu could significantly promote the growth and increase the polyphenols contents of P. koraiensis seedlings. The optimum concentrations of La3+ and Eu3+ were 400 μmol·L-1 and 100 μmol·L-1, respectively. With the concentrations, the polyphenols contents and were 1.55 and 1.39 times higher, and the proanthocyanidins contents were 1.58 and 1.40 times higher than the control group, respectively. The PAL and C4H activities significantly increased and peaked in two days after the induction with 100 μmol·L-1 La3+ and 400 μmol·L-1 Eu3+. There were significant correlations between the enzymes activities and the synthesis of polyphenols. The 100 μmol·L-1 La3+ showed more significantly promoting effects than the 400 μmol·L-1 Eu3+ on both P. koraiensis seedlings growth and polyphenols synthesis. Rare earth elements La3+ and Eu3+ may have acted as inductor of P. koraiensis secondary metabolism, elicitor-induce defensive responses in P. koraiensis, activate the phenylpropanoid pathway, change the activity of related enzymes, and thus enhance polyphenols synthesis.

Key words: Pinus koraiensis seedlings, rare earth element, polyphenols, PAL, C4H

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