Journal
JOURNAL OF EXPERIMENTAL BOTANY
Volume 73, Issue 17, Pages 5918-5927Publisher
OXFORD UNIV PRESS
DOI: 10.1093/jxb/erac230
Keywords
Chlorophyll; melatonin; photosynthesis; photosynthetic product; phytohormone; stomatal movement
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This article summarizes the role of melatonin in photosynthesis, including the regulation of chlorophyll synthesis and degradation, protection of photosynthetic proteins, maintenance of photosynthesis, control of stomatal movement, and regulation of the photosynthetic carbon cycle.
There are numerous studies on enhancing plant resistance to stress using melatonin, but few studies about its effect on photosynthesis. Herein, we summarized the role of melatonin in photosynthesis. Melatonin regulates chlorophyll synthesis and degradation through the transcription of related genes and hormone signals. It protects photosynthetic proteins and maintains the photosynthetic process through improving the transcription of photosystem genes, activating the antioxidant system, and promoting the xanthophyll cycle. Melatonin potentially regulates plant stomatal movement through CAND2/PMTR1. Finally, it controls the photosynthetic carbon cycle by regulating the metabolism of sugar, the gluconeogenesis pathway, and the degradation and transport of transient starch. Review of the role of melatonin in photosynthesis, highlighting its involvement in protection of the photosynthetic apparatus, maintenance of photosynthesis, control of stomatal movement, and regulation of the photosynthetic carbon cycle.
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