ArticleProceedings of the National Academy of Sciences of the United States of America2015
Circadian clock gene LATE ELONGATED HYPOCOTYL directly regulates the timing of floral scent emission in Petunia.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers.
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Who cites it
61 citing papers in PubMed, 119 citations in OpenAlex.
- Article
- Blue:red LED ratios coordinate pigment accumulation and vacuolar pH to reshape petal color and VOC profiles in Rosa hybrida 'Juicy Terrazza'.BMC plant biology · 2026Article
- The Circadian Clock Regulates Receptor-Mediated Immune Responses to a Herbivore-Associated Molecular Pattern.Plant, cell & environment · 2026Article
- Integrated circadian regulation in horticultural plants: light-environment mechanisms governing growth and development.Horticulture research · 2026Article
- Article
- CanGenes · 2025Article
- The homeotic gene PhDEF regulates production of volatiles in petunia flowers by activating EOBI and EOBII.The Plant cell · 2025Article
- Dynamics of linalool and its derivatives enantiomers inFood chemistry: X · 2025Article
- Emission and Transcriptional Regulation of Aroma Variation inPlants (Basel, Switzerland) · 2024Article
- Rhythms in insect olfactory systems: underlying mechanisms and outstanding questions.The Journal of experimental biology · 2024Review
- Floral volatile benzenoids/phenylpropanoids: biosynthetic pathway, regulation and ecological value.Horticulture research · 2024Article
- Unlocking Nature's Rhythms: Insights into Secondary Metabolite Modulation by the Circadian Clock.International journal of molecular sciences · 2024Review
- Research advances in regulation and genetic engineering of floral scents.Plant biotechnology (Tokyo, Japan) · 2024Article
- Petunia PHYTOCHROME INTERACTING FACTOR 4/5 transcriptionally activates key regulators of floral scent.Plant molecular biology · 2024Article
- Cloning and Functional Characterization of 2-C-methyl-D-erythritol-4-phosphate cytidylyltransferase (LiMCT) Gene in Oriental Lily (Lilium 'Sorbonne').Molecular biotechnology · 2024Article
- Sugar feeding by invasive mosquito species on ornamental and wild plants.Scientific reports · 2023Article
- DiverseHorticulture research · 2023Article
- SCARECROW-like GRAS protein PES positively regulates petunia floral scent production.Plant physiology · 2023Article
- The circadian clock controls temporal and spatial patterns of floral development in sunflower.eLife · 2023Article
- Potential regulatory genes of light induced anthocyanin accumulation in sweet cherry identified by combining transcriptome and metabolome analysis.Frontiers in plant science · 2023Article
1 more citing papers are in PubMed but not listed here.
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
Abstract
Flowers present a complex display of signals to attract pollinators, including the emission of floral volatiles. Volatile emission is highly regulated, and many species restrict emissions to specific times of the day. This rhythmic emission of scent is regulated by the circadian clock; however, the mechanisms have remained unknown. In Petunia hybrida, volatile emissions are dominated by products of the floral volatile benzenoid/phenylpropanoid (FVBP) metabolic pathway. Here we demonstrate that the circadian clock gene P. hybrida LATE ELONGATED HYPOCOTYL (LHY; PhLHY) regulates the daily expression patterns of the FVBP pathway genes and floral volatile production. PhLHY expression peaks in the morning, antiphasic to the expression of P. hybrida GIGANTEA (PhGI), the master scent regulator ODORANT1 (ODO1), and many other evening-expressed FVBP genes. Overexpression phenotypes of PhLHY in Arabidopsis caused an arrhythmic clock phenotype, which resembles those of LHY overexpressors. In Petunia, constitutive expression of PhLHY depressed the expression levels of PhGI, ODO1, evening-expressed FVBP pathway genes, and FVBP emission in flowers. Additionally, in the Petunia lines in which PhLHY expression was reduced, the timing of peak expression of PhGI, ODO1, and the FVBP pathway genes advanced to the morning. Moreover, PhLHY protein binds to cis-regulatory elements called evening elements that exist in promoters of ODO1 and other FVBP genes. Thus, our results imply that PhLHY directly sets the timing of floral volatile emission by restricting the expression of ODO1 and other FVBP genes to the evening in Petunia.
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