Comparative analysis of phenolic compounds profile, antioxidant capacity, and expression of phenolic biosynthesis-related genes in soybean microgreens grown under different light spectra

Zhang, X., Bian, Z. ORCID: 0000-0002-8312-840X, Li, S., Chen, X. and Lu, C. ORCID: 0000-0002-0064-4725, 2019. Comparative analysis of phenolic compounds profile, antioxidant capacity, and expression of phenolic biosynthesis-related genes in soybean microgreens grown under different light spectra. Journal of Agricultural and Food Chemistry. ISSN 0021-8561

[img] Text
1238264_Lu.pdf - Post-print
Full-text access embargoed until 15 November 2020.

Download (2MB)

Abstract

The Light-emitting diode (LED)-based light sources, which can selectively and quantitatively provide different spectra, have been frequently applied to manipulate plant growth and development. In this study, the effects of different LED light spectra on the growth, phenolic compounds profile, antioxidant capacity and transcriptional changes in genes regulating phenolic biosynthesis in soybean microgreens were investigated. The results showed that light illumination decreased the seedling length and yield but increased phenolic compounds content. Blue light and ultraviolet-A (UV-A) induced significant increases in total phenolic and total flavonoid content, as compared with the white light control. Sixty-six phenolic compounds were identified in the soybean samples, of which isoflavone, phenolic acid, and flavonol were the main components. Ten phenolic compounds obtained from the orthogonal partial least squares discriminant analysis (OPLS-DA) were reflecting the effect of light spectra. The antioxidant capacity was consistent with the phenolic metabolite levels, which showed higher levels under blue light and UV-A compared with the control. The highest transcript levels of phenolic biosynthesis-related genes were observed under blue light and UV-A. The transcript levels of GmCHI, GmFLS and GmIOMT were also upregulated under far-red and red light. Taken together, our findings suggested that the application of LED light could pave a green and effective way to produce phenolic compounds-enriched soybean microgreens with high nutrition quality, which could stimulate further investigations for improving plant nutritional value and should have a wide impact on maintaining human health.

Item Type: Journal article
Publication Title: Journal of Agricultural and Food Chemistry
Creators: Zhang, X., Bian, Z., Li, S., Chen, X. and Lu, C.
Publisher: American Chemical Society (ACS)
Date: 15 November 2019
ISSN: 0021-8561
Identifiers:
NumberType
10.1021/acs.jafc.9b05594DOI
1238264Other
Divisions: Schools > School of Animal, Rural and Environmental Sciences
Record created by: Linda Sullivan
Date Added: 26 Nov 2019 12:30
Last Modified: 30 Sep 2020 10:40
URI: http://irep.ntu.ac.uk/id/eprint/38520

Actions (login required)

Edit View Edit View

Views

Views per month over past year

Downloads

Downloads per month over past year