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Comparison of nocturnal and diurnal metabolomes of rose flowers and leaves

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Abstract

Introduction

Roses are one of the most essential ornamental flowers and are commonly used in perfumery, cosmetics, and food. They are rich in bioactive compounds, which are of interest for therapeutic effects.

Objectives

The objective of this study was to understand the kinds of changes that occur between the nocturnal and diurnal metabolism of rose and to suggest hypotheses.

Methods

Reversed-phase ultrahigh-performance liquid chromatography coupled with electrospray ionization quadrupole time-of-flight mass spectrometry or triple quadrupole mass spectrometry (TQ MS/MS) was used for nontargeted metabolomics and hormonal profiling respectively. For metabolite annotation, accurate mass spectra were compared with those in databases.

Results

The hormonal profile of flowers showed an increase in jasmonate at night, while that of leaves indicated an increase in the salicylic acid pathway. Nontargeted analyses of the flower revealed a switch in the plant's defense mechanisms from glycosylated metabolites during the day to acid metabolites at night. In leaves, a significant decrease in flavonoids was observed at night in favor of acid metabolism to maintain a level of protection. Moreover, it might be possible to place back some of the annotated molecules on the shikimate pathway.

Conclusion

The influence of day and night on the metabolome of rose flowers and leaves has been clearly demonstrated. The hormonal modulations occurring during the night and at day are consistent with the plant circadian cycle. A proposed management of the sesquiterpenoid and triterpenoid biosynthetic pathway may explain these changes in the flower. In leaves, the metabolic differences may reflect night-time regulation in favor of the salicylic acid pathway.

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Data availability

The datasets generated and analyzed during the current study are available in the MassIVE repository, https://doi.org/10.25345/C5K931H3

References

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Acknowledgments

We thank LVMH Recherche for providing raw material. Figures 3 and 5 were created using Biorender.

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Authors and Affiliations

Authors

Contributions

DH conceived and designed the research. JZ, CV, LG and EB conducted experiments. LG and EB provided raw material. JZ performed statistical analysis. JZ and CV analyzed data. JZ wrote the manuscript. All authors edited and approved the manuscript

Corresponding author

Correspondence to Dimitri Heintz.

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Competing interest

The authors have no competing interests to declare that are relevant to the content of this article.

Ethical approval

This article does not contain any studies with human and/or animal participants performed by any of the authors.

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Zumsteg, J., Bossard, E., Gourguillon, L. et al. Comparison of nocturnal and diurnal metabolomes of rose flowers and leaves. Metabolomics 20, 4 (2024). https://doi.org/10.1007/s11306-023-02063-1

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  • DOI: https://doi.org/10.1007/s11306-023-02063-1

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