Effects of Exogenous Nitric Oxide on Physiological Characteristics of Tea Plants Under Cold Stress

王英姿1; 2，李银花1; 2，陈金华1; 2，刘仲华1; 2，黄建安1; 2*

doi:10.13305/j.cnki.jts.2019.03.011

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Journal of Tea Science ›› 2019, Vol. 39 ›› Issue (3) : 335-341. DOI: 10.13305/j.cnki.jts.2019.03.011

Effects of Exogenous Nitric Oxide on Physiological Characteristics of Tea Plants Under Cold Stress

WANG Yingzi^1,2, LI Yinhua^1,2, CHEN Jinhua^1,2, LIU Zhonghua^1,2, HUANG Jian'an^1,2*

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Abstract

In order to investigate the alleviation effect of exogenous nitric oxide (NO) donor sodium nitroprusside (SNP) on tea rooted cuttings under cold stress, artificial climate chamber was used to simulate cold stress on tea rooted cuttings. The effects of SNP on membrane lipid peroxidation, osmotic adjustment substance and antioxidant activity of biennial ‘Bixiangzao’ rooted cuttings under cold stress were studied by foliar spray of SNP. The results show that suitable SNP concentration treatment could reduce the relative conductivity of tea leaves, inhibit the elevated malondialdehyde content, promote the accumulation of proline, soluble protein and sugar, and increase the superoxide dismutase, catalase activities, thereby alleviate the damage of cold stress on tea leaves. In addition, the optimal concentration of SNP was 200 μmol?L^-1.

Key words

exogenous nitric oxide / low temperature stress / physiological characteristics / sodium nitroprusside / tea plant

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WANG Yingzi, LI Yinhua, CHEN Jinhua, LIU Zhonghua, HUANG Jian'an. Effects of Exogenous Nitric Oxide on Physiological Characteristics of Tea Plants Under Cold Stress[J]. Journal of Tea Science. 2019, 39(3): 335-341 https://doi.org/10.13305/j.cnki.jts.2019.03.011

References

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