Research Progress on the Biological Functions and Biosynthetic Mechanisms of Floral Scent

doi:10.16420/j.issn.0513-353x.2025-0853

Acta Horticulturae Sinica ›› 2026, Vol. 53 ›› Issue (2): 386-396.doi: 10.16420/j.issn.0513-353x.2025-0853

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Research Progress on the Biological Functions and Biosynthetic Mechanisms of Floral Scent

XIE Yuying, SHI Tingting, YANG Xiulian, WANG Lianggui, YUE Yuanzheng()

State Key Laboratory of Tree Genetics and Breeding，College of Landscape Architecture，Nanjing Forestry University，Nanjing 210037，China

Received:2025-10-17 Revised:2025-12-01 Online:2026-02-25 Published:2026-02-12

Abstract

Abstract:

Floral scent serves multifaceted ecological and physiological roles in plant reproduction and defense mechanisms. It not only selectively attracts pollinators through specific volatile compounds and provides resistance against biotic stressors，but also participates in intracellular reactive oxygen species scavenging and signaling transduction，collectively forming a complex“plant-micropollinator-environment”interaction network. At the molecular level，the biosynthesis of floral scent is regulated through sophisticated hierarchical mechanisms，including epigenetic modifications such as DNA methylation and non-coding RNAs，coordinated regulation of structural genes by transcription factor families，as well as post-translational protein modifications including ubiquitination and histone modifications. These regulatory layers collectively ensure precise spatiotemporal control of floral scent production and stress-responsive emission. Research demonstrates that floral scent biosynthesis is intrinsically linked to plant senescence and stress adaptation processes，being modulated by hormonal signaling networks while exhibiting significant ecological adaptability and defensive functions under environmental challenges such as salt stress and herbivory.

Key words: floral scent, stress, molecular regulation

XIE Yuying, SHI Tingting, YANG Xiulian, WANG Lianggui, YUE Yuanzheng. Research Progress on the Biological Functions and Biosynthetic Mechanisms of Floral Scent[J]. Acta Horticulturae Sinica, 2026, 53(2): 386-396.

Figures/Tables 3

References 43

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调控类型 Regulate type	植物种类 Plant species	转录因子/调控因子 Transcription factor/Regulator	影响的花香物质/代谢产物 Affected floral volatiles/Metabolites	参考文献 Reference
MYB转录因子家族 MYB Transcription factor family	桂花Osmanthus fragrans	OfMYB21	芳樟醇Linalool	Lan et al.,2023
	草莓 Fragaria × ananassa	FaMYB63（R2R3-MYB）	丁香酚Eugenol	Wang et al.,2022
	西藏虎头兰Cymbidium tracyanum	CtMYB2、CtMYB3	萜类花香物质 Terpenoid floral volatiles	Tu et al.,2025
	百合Lilium brownii	LiMYB108	单萜类花香物质 Monoterpenoid floral volatiles	Yang et al.,2023
	除虫菊Tanacetum cinerariifolium	TcMYB8	除虫菊酯（次生代谢产物） Pyrethrins（Secondary metabolites）	Zhou et al.,2022
	矮牵牛Petunia hybrida	EOBI（R2R3-MYB）	甲基苯甲酸酯、水杨酸甲酯、异丁香酚等 Methyl benzoate，methyl salicylate，isoeugenol，etc.	Spitzer et al.,2012
bHLH转录因子家族 bHLH Transcription factor family	茶树Camellia sinensis	CsbHLH133；CsbHLH133-AS	香叶醇Geraniol	Cheng et al.,2024
	玫瑰Rosa rugosa	RrbHLH105	香叶醇Geraniol	Bao et al.,2025
	月季Rosa chinensis	bHLH（未命名） bHLH（Unidentified）	苯丙素类香气成分（丁香酚、异丁香酚） Phenylpropanoid aroma constituents（e.g.，Eugenol and Isoeugenol）	Zhou et al.,2024
	百合Lilium brownii	LibHLH22、LibHLH63	萜类花香物质 Terpenoid floral volatiles	Feng et al.,2023
AP2/ERF及其他转录因子 AP2/ERF as well as additional transcription factors	西藏虎头兰Cymbidium tracyanum	CtAP2/ERF1、CtAP2/ERF4；CtbZIP1（bZIP）	萜类化合物 Terpenoids	Tu et al.,2025
	山茶花amellia japonica	MYB、bHLH家族成员（推测） MYB、bHLH（Candidate family member）	芳樟醇、苯丙素类香气成分 Linalool and phenylpropanoid fragrance compounds	Chen et al.,2024
	矮牵牛Petunia hybrida	PhPIF4/5；EOBII	甲基苯甲酸酯类挥发物 Methyl benzoate-type volatiles	Shor & Vainstein,2024

调控类型 Regulate type	植物种类 Plant species	转录因子/调控因子 Transcription factor/Regulator	影响的花香物质/代谢产物 Affected floral volatiles/Metabolites	参考文献 Reference
MYB转录因子家族 MYB Transcription factor family	桂花Osmanthus fragrans	OfMYB21	芳樟醇Linalool	Lan et al.,2023
	草莓 Fragaria × ananassa	FaMYB63（R2R3-MYB）	丁香酚Eugenol	Wang et al.,2022
	西藏虎头兰Cymbidium tracyanum	CtMYB2、CtMYB3	萜类花香物质 Terpenoid floral volatiles	Tu et al.,2025
	百合Lilium brownii	LiMYB108	单萜类花香物质 Monoterpenoid floral volatiles	Yang et al.,2023
	除虫菊Tanacetum cinerariifolium	TcMYB8	除虫菊酯（次生代谢产物） Pyrethrins（Secondary metabolites）	Zhou et al.,2022
	矮牵牛Petunia hybrida	EOBI（R2R3-MYB）	甲基苯甲酸酯、水杨酸甲酯、异丁香酚等 Methyl benzoate，methyl salicylate，isoeugenol，etc.	Spitzer et al.,2012
bHLH转录因子家族 bHLH Transcription factor family	茶树Camellia sinensis	CsbHLH133；CsbHLH133-AS	香叶醇Geraniol	Cheng et al.,2024
	玫瑰Rosa rugosa	RrbHLH105	香叶醇Geraniol	Bao et al.,2025
	月季Rosa chinensis	bHLH（未命名） bHLH（Unidentified）	苯丙素类香气成分（丁香酚、异丁香酚） Phenylpropanoid aroma constituents（e.g.，Eugenol and Isoeugenol）	Zhou et al.,2024
	百合Lilium brownii	LibHLH22、LibHLH63	萜类花香物质 Terpenoid floral volatiles	Feng et al.,2023
AP2/ERF及其他转录因子 AP2/ERF as well as additional transcription factors	西藏虎头兰Cymbidium tracyanum	CtAP2/ERF1、CtAP2/ERF4；CtbZIP1（bZIP）	萜类化合物 Terpenoids	Tu et al.,2025
	山茶花amellia japonica	MYB、bHLH家族成员（推测） MYB、bHLH（Candidate family member）	芳樟醇、苯丙素类香气成分 Linalool and phenylpropanoid fragrance compounds	Chen et al.,2024
	矮牵牛Petunia hybrida	PhPIF4/5；EOBII	甲基苯甲酸酯类挥发物 Methyl benzoate-type volatiles	Shor & Vainstein,2024

Research Progress on the Biological Functions and Biosynthetic Mechanisms of Floral Scent

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