Special Issue "Role of Melatonin in Plants"
Deadline for manuscript submissions: closed (31 August 2022) | Viewed by 2050
Interests: plant melatonin biosynthesis; transgenic plants; serotonin N-acetyltransferase; herbicide resistance
Special Issues, Collections and Topics in MDPI journals
Interests: plant tissue culture; brassinosteroids; transgenic rice; abiotic stress
In plants, melatonin biosynthesis begins with tryptophan, an aromatic amino acid synthesized in chloroplasts via the shikimate pathway. Due to its amphiphilic molecule, it is omnipresent in all subcellular compartments functioning as an antioxidant as well as an important signaling molecule for optimal functions of chloroplasts and endoplasmic reticulum, and so forth. As opposed to many previous reports, it is also revealed that melatonin levels are very low, as indicated by the lower catalytic activity of melatonin biosynthesis enzymes. Furthermore, the biosynthetic pathway of melatonin is complex and requires more studies. In addition, melatonin is rapidly metabolized into a series of melatonin metabolites including 2-hydroxymelatonin and cyclic 3-hydroxymelatonin, but their relative levels are expected to be variable in plants depending on the expression levels of their corresponding enzymes. The steady state levels of melatonin are precisely regulated by a large number of isogenes and gene family of respective genes responsible for melatonin biosynthesis and catabolism in plants. This Special issue invites all aspects of melatonin studies which are associated with melatonin synthesis, catabolism, their related genes, quantification of melatonin and its metabolites, possible signaling pathway components, and functions of melatonin, as well as its metabolites in plants.
Prof. Dr. Kyoungwhan Back
Dr. Ok-Jin Hwang
Dr. Hyoung-Yool Lee
Manuscript Submission Information
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- plant growth and development
- defense response
- melatonin metabolites