Application of exogenous melatonin in vitro and in planta: a review of its effects and mechanisms of action

Melatonin is a natural indolamine that regulates many physiological functions in plants. The most prominent role of melatonin in plants has been its ability to work as an anti-stressor agent. Exogenous melatonin can prevent cell death and promote cell proliferation through its antioxidant properties...

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Bibliographic Details
Published in:Biotechnology letters 2022-08, Vol.44 (8), p.933-950
Main Authors: Iqbal, Reema, Khan, Tariq
Format: Article
Language:English
Subjects:
Abiotic stress
Antioxidants
Apoptosis
Apples
Applied Microbiology
Biochemistry
Biomass
Biomedical and Life Sciences
Biosynthesis
Biotechnology
Callus
Callus culture
Cell culture
Cell death
Cell membranes
Cell proliferation
Damage prevention
Gene expression
Genetic engineering
Life Sciences
Melatonin
Metabolism
Microbiology
Organelles
Physiological effects
Physiology
Plant growth
Polyamines
Reactive oxygen species
Review
Roles
Salinity
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Summary:Melatonin is a natural indolamine that regulates many physiological functions in plants. The most prominent role of melatonin in plants has been its ability to work as an anti-stressor agent. Exogenous melatonin can prevent cell death and promote cell proliferation through its antioxidant properties, enhancement of polyamine biosynthesis, and the ability to shift cell metabolism in case of stressors like sugar starvation. Melatonin scavenges reactive oxygen species and thus preventing damage to cell membranes and other organelles. Its application in different plant culture systems reveals its important physiological and biochemical roles during the growth and development of these cultures. It has been observed that the exogenous melatonin protects callus culture, reduces cold-induced apoptosis in cell suspension, and stimulates adventitious and lateral roots formation. This review presents the physiological and biochemical effects of exogenous melatonin on in vitro culture systems, including its impact on biomass accumulation, growth, and development of plants.
ISSN:0141-5492
1573-6776
DOI:10.1007/s10529-022-03270-x