Journal of Integrative Agriculture ›› 2021, Vol. 20 ›› Issue (11): 3075-3083.DOI: 10.1016/S2095-3119(21)63611-0

所属专题: 食品科学合辑Food Science

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  • 收稿日期:2020-06-15 出版日期:2021-11-01 发布日期:2021-09-17

Application of methyl jasmonate postharvest maintains the quality of Nanguo pears by regulating mitochondrial energy metabolism

LI Can-ying*, CHENG Yuan*, HOU Jia-bao, ZHU Jie, SUN Lei, GE Yong-hong 
  

  1. College of Food Science and Technology/National and Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Bohai University, Jinzhou 121013, P.R.China
  • Received:2020-06-15 Online:2021-11-01 Published:2021-09-17
  • Contact: Correspondence GE Yong-hong, E-mail: geyh1979@163.com
  • About author:* These authors contributed equally to this study.
  • Supported by:
    This study was supported by the National Natural Science Foundation of China (31801595) and the First-class Discipline Project of Liaoning Province, China (LNSPXKBD2020205).

摘要:

研究了采后茉莉酸甲酯(MeJA)浸泡处理对常温贮藏期间南果梨果实线粒体能量代谢和贮藏品质的影响。结果表明,采后MeJA处理抑制了果实呼吸速率和失重率的增加,保持了较高的果肉硬度,抗坏血酸含量和可滴定酸。MeJA处理还显著提高了线粒体H+-ATPaseCa2+-ATPase、琥珀酸脱氢酶和细胞色素C氧化酶活性,ATPADP含量及能荷水平。由此说明,采后MeJA处理通过调控线粒体能量代谢来保持南果梨果实常温贮藏品质。

Abstract:

The present study was conducted to investigate the effects of methyl jasmonate (MeJA) dipping treatment on mitochondrial energy metabolism and quality parameters of Nanguo pears during room temperature storage.  The results showed that MeJA treatment suppressed the respiration rate and weight loss, and maintained the flesh firmness of Nanguo pears.  MeJA also effectively maintained the content of ascorbic acid and titratable acidity in the fruit.  Furthermore, the activities of H+-ATPase, Ca2+-ATPase, succinate dehydrogenase (SDH) and cytochrome C oxidase (CCO) of the MeJA-treated fruit were significantly higher than those of the untreated fruit.  The contents of adenosine triphosphate (ATP) and adenosine diphosphate (ADP) and the energy charge were also enhanced by MeJA treatment.  These results suggest that postharvest MeJA treatment could maintain the quality of Nanguo pears, in part by modulating mitochondrial energy metabolism during room temperature storage.
 

Key words: Pyrus ussuriensis ,  energy metabolism ,  methyl jasmonate ,  respiration rate