Acta Horticulturae Sinica ›› 2022, Vol. 49 ›› Issue (5): 1073-1080.doi: 10.16420/j.issn.0513-353x.2021-0110

• Research Papers • Previous Articles     Next Articles

Effects of High Temperature and Waterlogging Stress on Photosynthesis and Nitrogen Metabolism of Ginger Leaves

LIU Shangjia1,2,3, L& Yao1,2,3, CAO Bili1,2,3,*(), CHEN Zijing1,2,3, GAO Song1,2,3, XU Kun1,2,3,*()   

  1. 1Shandong Collaborative Innovation Center of Fruit&Vegetable Quality and Efficent Production
    2Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huang-Huai Region,Ministry of Agriculture and Rural Affairs
    3College of Horticulture Science and Engineering,Shandong Agricultural University,Tai’an,Shandong 271018,China
  • Received:2021-12-06 Revised:2022-01-18 Online:2022-05-25 Published:2022-05-25
  • Contact: CAO Bili,XU Kun;


To reveal the physiological mechanism underlying the greater severity of ginger waterlogging in summer than in autumn,the effects of normal water supply at room temperature(the control),normal water supply at high temperature,waterlogging at room temperature and waterlogging at high temperature on leaf photosynthesis and nitrogen metabolism were investigated in pots using‘Laiwu Small Ginger’as the test material. The results showed that chlorophyll degradation and the net photosynthetic rate(Pn)of ginger leaves were significantly reduced by waterlogging or high temperature stress,especially by the interaction of waterlogging and high temperature. Pn was reduced by 53.62%,26.41% and 87.59% compared to the control at 36 h for normal water supply at high temperature,waterlogging at room temperature and waterlogging at high temperature,respectively. Treatment with 12 h of waterlogging at high temperature triggered non-stomatal restriction,while 24 h was required for normal water supply at high temperature and waterlogging at room temperature. The enzymes related to leaf nitrogen metabolism of the activities of NR,GS,GOGAT and GDH decreased significantly with the prolonging of waterlogging or high temperature stress,and the interaction effect was obvious;the soluble proteins content of leaves also decreased significantly with the prolonging of stress,and the decrease was significantly greater in waterlogging at high temperature and normal water supply at high temperature than in waterlogging at room temperature treatment,and the contents of nitrate nitrogen(NO3--N),ammonium nitrogen(NH4+-N)and free amino acids in leaves showed a tendency to increase first and then decrease,but at 60 h of stress,except for NO3--N in waterlogging at high temperature,all other treatments were significantly higher than the control. The results showed that waterlogging and high temperature stress significantly reduced photosynthetic efficiency and damaged nitrogen metabolic activity of ginger leaves,especially the interaction effect between waterlogging and high temperature was more significant.

Key words: ginger, Zingiber officinale, waterlogging stress, high temperature stress, photosynthesis, nitrogen metabolism

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