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Insights into tea tree oil-mediated transcriptome modulation in Rosa hybrida
Juliana Lopez-Jimenez1, Diego Giraldo2, Felipe Cabarcas1,3
1Centro Nacional de Secuenciación Genómica - CNSG, Sede de Investigación Universitaria- SIU, Universidad de Antioquia UdeA, Medellín, Colombia.
Tea Tree Oil (TTO) shows potential as a sustainable fungicide alternative for roses. It activates plant defense mechanisms in leaves, suggesting a bio-stimulant effect, with minimal impact on petals.
Area of Science:
- Plant Science
- Molecular Biology
- Sustainable Agriculture
Background:
- Conventional fungicides pose environmental concerns in floriculture.
- Tea Tree Oil (TTO) is explored for its potential bio-based antifungal properties.
- Understanding plant molecular responses to TTO is crucial for sustainable alternatives.
Purpose of the Study:
- To evaluate Tea Tree Oil (TTO) as a substitute for conventional antifungal treatments in Rosa hybrida.
- To analyze the molecular responses of rose leaves and petals to TTO application using transcriptomics.
- To assess TTO's potential as a bio-stimulant and its impact on plant defense pathways.
Main Methods:
- Transcriptomic analysis of rose leaves and petals after TTO treatment.
- Gene expression profiling to identify differentially regulated genes.
- Pathway enrichment analysis to understand molecular mechanisms.
Main Results:
- Significant transcriptomic shifts observed in rose leaves, with 26 genes upregulated and 1 downregulated.
- Upregulated genes in leaves are linked to lipid metabolism, cell wall modification, and plant defense.
- Petals showed a less pronounced response, with few differentially expressed genes, including transcriptional regulators and metabolic enzymes.
Conclusions:
- TTO acts as a bio-stimulant in rose leaves by activating stress-response pathways.
- The differential response between leaves and petals suggests systemic transcriptional adjustments are more prominent in vegetative organs.
- TTO shows promise as a sustainable, bio-based alternative to synthetic fungicides in floriculture.
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