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Transcriptomic and Metabolomic Insights into Plant Hormone Modulation and Secondary Metabolite Accumulation in Basil Under Far-Red and Ultraviolet-A Light

文献类型： 外文期刊

作者： Li, Dandan 1 ; Shen, Haibin 2 ; Yu, Lishu 1 ; Zhu, Kaili 1 ; Zhang, Yongxue 2 ; Wu, Shaofang 2 ; Chang, Liying 3 ; Ding, Xiaotao 2 ; Jiang, Yuping 1 ;

作者机构： 1.Shanghai Inst Technol, Coll Ecol Technol & Engn, Shanghai 201418, Peoples R China

2.Shanghai Acad Agr Sci, Shanghai Key Lab Protected Hort Technol, Hort Res Inst, Shanghai 201403, Peoples R China

3.Shanghai Jiao Tong Univ, Sch Agr & Biol, Shanghai 200240, Peoples R China

关键词： flavonoid biosynthesis; FR light; GA; JA; UVA light

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：4.9； 五年影响因子：5.7 ）

ISSN： 1661-6596

年卷期： 2025 年 26 卷 8 期

页码：

收录情况： SCI

摘要： In this study, red-blue light (7R3B) was used as the control (CK), while far-red (FR) and ultraviolet-A (UVA) light were supplemented to evaluate their effects on basil growth. The results showed that the FR treatment promoted plant height, stem diameter, and biomass, but reduced chlorophyll and carotenoid content, while the UVA treatment increased stem diameter and chlorophyll b content. Meanwhile, transcriptomic and metabolomic analyses were employed to examine changes in gene expression and metabolite accumulation in basil. The FR treatment reduced the levels of differentially accumulated metabolites (DAMs) in the carotenoid biosynthesis pathway, potentially contributing to the observed decrease in chlorophyll. The FR treatment upregulated the levels of five DAMs (gibberellin, cytokinin, brassinosteroid, jasmonic acid, and salicylic acid) and altered the differentially expressed genes (DEGs) such as gibberellin receptor (GID1) and jasmonate ZIM domain-containing protein (JAZ) in the plant hormone signal transduction pathway, thereby promoting plant growth and shade avoidance responses. The UVA treatment upregulated the 9-cis-epoxycarotenoid dioxygenase (NCED) expression in the carotenoid biosynthesis pathway, possibly indirectly promoting flavonoid synthesis. In the flavonoid biosynthesis pathway, the UVA treatment also promoted flavonoid accumulation by upregulating DEGs including flavonol synthase (FLS), anthocyanidin synthase (ANS), 5-O-(4-coumaroyl)-D-quinate 3 '-monooxygenase (CYP98A), and flavanone 7-O-glucoside 2 ''-O-beta-L-rhamnosyltransferase (C12RT1), as well as increasing the levels of DAMs such as kaempferol, luteolin, apigenin, and leucopelargonidin. The accumulation of flavonoids improved antioxidant capacity and nutritional value in basil. Through a Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis, this study provided valuable insights into the molecular and metabolic mechanisms of the FR and UVA regulation of basil growth, providing guidance for optimizing supplementary lighting strategies in plant factories.

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