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Melatonin in Plants
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Melatonin in Plants

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Physiology and Metabolism".

Deadline for manuscript submissions: closed (31 October 2021) | Viewed by 13245

Special Issue Editor

Dr. Ping Wang

E-Mail Website1 Website2
Guest Editor
Department of Genetics, Development and Cell Biology, Iowa State University, Ames, IA 50011, USA
Interests: brassinosteroid signaling; autophagy; Feronia; plant growth and stress responses; protein degradation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Melatonin, one of the best-studied indoleamine molecules in animals, has been investigated with an increasing amount of information about its presence in various plant species and its physiological functions. A large number of studies regarding plant melatonin (known as phytomelatonin) have been published over the past several years, indicating that phytomelatonin is a hot research topic. Melatonin regulates many biological processes, including seed germination, root growth, leaf senescence, and plant responses to various abiotic and biotic stresses. Exploiting the functions of melatonin in plants could facilitate its potential application in agriculture to improve yield and plant-environmental interactions. Much remains to be discovered, especially regarding the crosstalk between phytomelatonin and other plant hormones in terms of diverse biological processes or responses to the environment. In addition, more refined mechanism research on molecular, cellular, genetic, or large-scale omics levels is needed. This Special Issue of Plants will include reviews and refined function studies of phytomelatonin during development and in response to various environments, as well as potential regulatory studies on melatonin biosynthesis in plants.

Dr. Ping Wang
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Plants is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • phytomelatonin
  • hormones
  • environmental stresses
  • melatonin biosynthesis
  • regulatory

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Published Papers (2 papers)

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Research

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12 pages, 1517 KiB  
Article
A Phytomelatonin-Rich Extract Obtained from Selected Herbs with Application as Plant Growth Regulator
by Josefa Hernández-Ruiz, Antonio Cano and Marino B. Arnao
Plants 2021, 10(10), 2143; https://doi.org/10.3390/plants10102143 - 9 Oct 2021
Cited by 7 | Viewed by 4205
Abstract
The animal hormone melatonin (N-acetyl-5-methoxytryptamine) is a pleiotropic molecule with multiple and various functions. Phytomelatonin is the melatonin from plants and was discovered in 1995 in some species. Phytomelatonin is considered an interesting molecule in the physiology of plants, as it seems to [...] Read more.
The animal hormone melatonin (N-acetyl-5-methoxytryptamine) is a pleiotropic molecule with multiple and various functions. Phytomelatonin is the melatonin from plants and was discovered in 1995 in some species. Phytomelatonin is considered an interesting molecule in the physiology of plants, as it seems to be involved in many actions, such as germination, growth, rooting and parthenocarpy, including fruit set and ripening; it also seems to play a role during postharvest. It has been studied in processes such as primary and secondary metabolism, photosynthesis and senescence, as well as in the nitrogen and sulfur cycles. Phytomelatonin up- and down-regulates many relevant genes related to plant hormones and key genes related to the above-mentioned aspects. One of the most decisive aspects of phytomelatonin is its relevant role as a bioprotective and alleviating agent against both biotic and abiotic stressors, which has opened up the possibility of using melatonin as a phytoprotector and biostimulant in agriculture. In this respect, using material of plant origin to obtain extracts rich in phytomelatonin instead of using synthetic melatonin (thus avoiding unwanted by-products) has become a topic of discussion. This work characterized the phytomelatonin-rich extracts obtained from selected herbs and determined their contents of phytomelatonin, phenols and flavonoids; the antioxidant activity was also measured. Finally, two melatonin-specific bioassays in plants were applied to demonstrate the excellent biological properties of the natural phytomelatonin-rich extracts obtained. The herb composition and the protocols for obtaining the extracts rich in phytomelatonin are in the process of registration for their legal protection. Full article
(This article belongs to the Special Issue Melatonin in Plants)
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Review

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14 pages, 3011 KiB  
Review
Melatonin and Carbohydrate Metabolism in Plant Cells
by Marino B. Arnao, Josefa Hernández-Ruiz, Antonio Cano and Russel J. Reiter
Plants 2021, 10(9), 1917; https://doi.org/10.3390/plants10091917 - 15 Sep 2021
Cited by 47 | Viewed by 7710
Abstract
Melatonin, a multifunctional molecule that is present in all living organisms studied, is synthesized in plant cells in several intercellular organelles including in the chloroplasts and in mitochondria. In plants, melatonin has a relevant role as a modulatory agent which improves their tolerance [...] Read more.
Melatonin, a multifunctional molecule that is present in all living organisms studied, is synthesized in plant cells in several intercellular organelles including in the chloroplasts and in mitochondria. In plants, melatonin has a relevant role as a modulatory agent which improves their tolerance response to biotic and abiotic stress. The role of melatonin in stress conditions on the primary metabolism of plant carbohydrates is reviewed in the present work. Thus, the modulatory actions of melatonin on the various biosynthetic and degradation pathways involving simple carbohydrates (mono- and disaccharides), polymers (starch), and derivatives (polyalcohols) in plants are evaluated. The possible applications of the use of melatonin in crop improvement and postharvest products are examined. Full article
(This article belongs to the Special Issue Melatonin in Plants)
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