Melatonin and Expression of Tryptophan Decarboxylase Gene (TDC ) in Herbaceous Peony (Paeonia lactiflora Pall.) Flowers

Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry
Daqiu ZhaoJun Tao

Abstract

Melatonin is a bioactive, edible ingredient that promotes human health and exists widely in plants, but little is known about its biosynthetic routes and underlying molecular mechanisms in the herbaceous peony. In this contribution, we found that herbaceous peony flowers are rich in melatonin that is found in the greatest quantities in the white series, followed by the ink series, the red series and then the pink series. On this basis, the melatonin content fluctuates during flower development and peaks during the bloom stage. Moreover, it is apparent that sun exposure and blue light induce melatonin production whereas green light restrains it during a 24-h light/dark cycle of melatonin content, as there were ‘dual peaks’ at 2 p.m. and 2 a.m. Additionally, the corresponding expression pattern of the herbaceous peony tryptophan decarboxylase gene (TDC) was positively related with melatonin production. These results suggest that color series, development stage and light play an important role in melatonin accumulation, and that TDC is a rate-limiting gene in melatonin biosynthesis.

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Citations

Feb 10, 2019·International Journal of Molecular Sciences·Haoshuang ZhanWeining Song
Jan 30, 2020·International Journal of Molecular Sciences·Luying SunXiangnan Li
Apr 8, 2020·Plant Reproduction·M B Arnao, J Hernández-Ruiz
Sep 19, 2018·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Rahat SharifYuhong Li

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Datasets Mentioned

BETA
NM001067504

Methods Mentioned

BETA
MDA
ELISA

Software Mentioned

Primer
SAS
STAT

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