Metabolic profiling and expression analysis of key genetic factors in the biosynthetic pathways of antioxidant metabolites in mungbean sprouts

Mungbeans ( L.), a major legume crop in Asia, contain higher amounts of functional substances than other legumes, such as catechin, chlorogenic acid, and vitexin. Germination can improve the nutritional value of legume seeds. Here, 20 functional substances were profiled in germinated mungbeans and t...

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Published inFrontiers in plant science Vol. 14; p. 1207940
Main Authors Kim, Byeong Cheol, Lim, Insu, Ha, Jungmin
Format Journal Article
LanguageEnglish
Published Switzerland Frontiers Media S.A 16.06.2023
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Summary:Mungbeans ( L.), a major legume crop in Asia, contain higher amounts of functional substances than other legumes, such as catechin, chlorogenic acid, and vitexin. Germination can improve the nutritional value of legume seeds. Here, 20 functional substances were profiled in germinated mungbeans and the expression levels of the transcripts of key enzymes in targeted secondary metabolite biosynthetic pathways were identified. VC1973A, a reference mungbean elite cultivar, had the highest amount of gallic acid (99.93 ± 0.13 mg/100 g DW) but showed lower contents of most metabolites than the other genotypes. Wild mungbeans contained a large amount of isoflavones compared with cultivated genotypes, especially for daidzin, genistin and glycitin. The expression of key genes involved in biosynthetic pathways had significant positive or negative correlations with the target secondary metabolite contents. The results indicate that functional substance contents are regulated at the transcriptional level, which can be applied to improve the nutritional value of mungbean sprouts in molecular breeding or genetic engineering, and wild mungbeans are a useful resource to improve the quality of mungbean sprouts.
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Edited by: Changlin Liu, Chinese Academy of Agricultural Sciences (CAAS), China
Reviewed by: Yawen Zeng, Yunnan Academy of Agricultural Sciences, China; Ilahy Riadh, Institut National De La Recherche Agronomique De Tunisie (INRAT), Tunisia
ISSN:1664-462X
1664-462X
DOI:10.3389/fpls.2023.1207940