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Phytomelatonin: From Intracellular Signaling to Global Horticulture Market
Morteza Soleimani Aghdam1, Marino B Arnao2
1Department of Horticultural Science, Imam Khomeini International University, Qazvin, Iran.
Journal of Pineal Research
|July 20, 2024
Summary
Melatonin enhances plant stress tolerance and postharvest quality in fruits and vegetables. Modulating its levels and biosynthesis pathways offers promising strategies for agricultural applications.
Area of Science:
- Plant Science
- Hormone Biology
- Agricultural Science
Background:
- Melatonin, a mammalian hormone, is increasingly recognized for its significant roles in plants.
- Phytomelatonin influences plant responses to stress and impacts postharvest quality of produce.
Purpose of the Study:
- To explore the agronomic potential of melatonin in plants.
- To review the mechanisms of melatonin's action in improving stress tolerance and postharvest life.
Main Methods:
- Investigating exogenous melatonin application and endogenous biosynthesis modulation.
- Analyzing the regulation of key enzymes in melatonin biosynthesis pathways (TDC, T5H, SNAT, ASMT, COMT).
- Examining the roles of transcription factors, protein kinases, miRNAs, and gasotransmitters.
Main Results:
- Melatonin application and biosynthesis regulation can alter tissue melatonin levels and plant responses.
- Identified key enzymes and regulatory elements involved in phytomelatonin pathways.
- Discussed melatonin's role in autophagy, posttranslational modifications, and interactions with plant hormones.
Conclusions:
- Phytomelatonin presents promising opportunities for enhancing fruit and vegetable quality and marketability.
- Understanding melatonin's receptor (CAND2/PMTR1) and its interaction with environmental factors like UV-B and cold storage is crucial.
- Melatonin-based strategies can improve postharvest preservation and reduce losses.
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