Article ; Online: LiNAC100 contributes to linalool biosynthesis by directly regulating LiLiS in Lilium 'Siberia'.
2024 Volume 259, Issue 4, Page(s) 73
Abstract: ... fragrance by directly regulating linalool synthase gene LiLiS. Lilium 'Siberia', an Oriental hybrid, is ... VIGS) of LiNAC100 was found to down-regulate the expression of linalool synthase gene (LiLiS) and ... activates LiLiS expression. Our findings reveal that LiNAC100 plays a key role in monoterpene biosynthesis ...
Abstract | Main conclusion: The transcription factor LiNAC100 has a novel function of regulating floral fragrance by directly regulating linalool synthase gene LiLiS. Lilium 'Siberia', an Oriental hybrid, is renowned as both a cut flower and garden plant, prized for its color and fragrance. The fragrance comprises volatile organic compounds (VOCs), primarily monoterpenes found in the plant. While the primary terpene synthases in Lilium 'Siberia' were identified, the transcriptional regulation of these terpene synthase (TPS) genes remains unclear. Thus, understanding the regulatory mechanisms of monoterpene biosynthesis is crucial for breeding flower fragrance, thereby improving ornamental and commercial values. In this study, we isolated a nuclear-localized LiNAC100 transcription factor from Lilium 'Siberia'. The virus-induced gene silencing (VIGS) of LiNAC100 was found to down-regulate the expression of linalool synthase gene (LiLiS) and significantly inhibit linalool synthesis. Conversely, transient overexpression of LiNAC100 produced opposite effects. Additionally, yeast one-hybrid and dual-luciferase assays confirmed that LiNAC100 directly activates LiLiS expression. Our findings reveal that LiNAC100 plays a key role in monoterpene biosynthesis in Lilium 'Siberia', promoting linalool synthesis through the activation of LiLiS expression. These results offer insights into the molecular mechanisms of terpene biosynthesis in Lilium 'Siberia' and open avenues for biotechnological enhancement of floral scent. |
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MeSH term(s) | Lilium/genetics ; Lilium/metabolism ; Gene Expression Regulation, Plant ; Plant Breeding ; Acyclic Monoterpenes/metabolism ; Monoterpenes/metabolism ; Flowers/genetics ; Transcription Factors/genetics |
Chemical Substances | linalool (D81QY6I88E) ; Acyclic Monoterpenes ; Monoterpenes ; Transcription Factors |
Language | English |
Publishing date | 2024-02-23 |
Publishing country | Germany |
Document type | Journal Article |
ZDB-ID | 208909-9 |
ISSN | 1432-2048 ; 0032-0935 ; 1866-2749 |
ISSN (online) | 1432-2048 |
ISSN | 0032-0935 ; 1866-2749 |
DOI | 10.1007/s00425-024-04340-2 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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