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Journal of Tea Science ›› 2014, Vol. 34 ›› Issue (1): 87-94.doi: 10.13305/j.cnki.jts.2014.01.011

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Effects of Exogenous Spermidine on Growth of Tea Plant under Lead Stress

SHEN Lu, XIAO Bin*, ZHOU Xuan, ZHAO Jiuzhou, JIN Yuan   

  1. College of Horticulture, Northwest A & F University, Yangling 712100, China
  • Received:2013-06-25 Revised:2013-09-17 Published:2019-09-03

Abstract: By adopting the pot experiment and using Longjing 43 cultivar as test material, the effects of 1.0 mmol·L-1 exogenous spermidine on the growth of tea plant, and the physiological indexes in leaves such as the activity of leaf antioxidant enzymes, osmotic adjustment substances content, MDA content, cell membrane permeability and chlorophyll content were investigated under different concentration lead stress. The results showed that: low concentration of lead stress could promote the growth of tea plant, while high concentration of lead stress influence the growth of tea plant. Applying exogenous spermidine could effectively mitigate the damage of tea plant caused by increase of lead stress, promote the growth of tea plant, improve the activity of antioxidative enzyme, soluble protein content, chlorophyll content, and reduced the proline content, MDA content and the relative conductivity, so to promote the growth of tea plant. It suggested that 1.0 mmol·L-1 exogenous spermidine has a positive role in promoting the growth of tea plant under lead stress.

Key words: spermidine, tea plant[Camellia sinensis(L.) O. Kuntze], lead stress, physiological index, mitigation

CLC Number: