ArticleAnnals of botany2021
Gene expression underlying floral epidermal specialization in Aristolochia fimbriata (Aristolochiaceae).
Article in Annals of botany, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 7 citations in OpenAlex.
- From Model Plants toPlants (Basel, Switzerland) · 2026Review
- Evolution of petal patterning: blooming floral diversity at the microscale.The New phytologist · 2025Review
- Uncovering developmental diversity in the field.Development (Cambridge, England) · 2024Article
- De novo Assembly and Comparative Analyses of Mitochondrial Genomes in Piperales.Genome biology and evolution · 2023Article
- Expression and Functional Studies of Leaf, Floral, and Fruit Developmental Genes in Non-model Species.Methods in molecular biology (Clifton, N.J.) · 2023Article
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Authors and funding
6 authors at 4 institutions in 3 countries.
Funding
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Abstract
BACKGROUND AND
aimsThe epidermis constitutes the outermost tissue of the plant body. Although it plays major structural, physiological and ecological roles in embryophytes, the molecular mechanisms controlling epidermal cell fate, differentiation and trichome development have been scarcely studied across angiosperms, and remain almost unexplored in floral organs.
methodsIn this study, we assess the spatio-temporal expression patterns of GL2, GL3, TTG1, TRY, MYB5, MYB6, HDG2, MYB106-like, WIN1 and RAV1-like homologues in the magnoliid Aristolochia fimbriata (Aristolochiaceae) by using comparative RNA-sequencing and in situ hybridization assays. KEY
resultsGenes involved in Aristolochia fimbriata trichome development vary depending on the organ where they are formed. Stem, leaf and pedicel trichomes recruit most of the transcription factors (TFs) described above. Conversely, floral trichomes only use a small subset of genes including AfimGL2, AfimRAV1-like, AfimWIN1, AfimMYB106-like and AfimHDG2. The remaining TFs, AfimTTG1, AfimGL3, AfimTRY, AfimMYB5 and AfimMYB6, are restricted to the abaxial (outer) and the adaxial (inner) pavement epidermal cells.
conclusionsWe re-evaluate the core genetic network shaping trichome fate in flowers of an early-divergent angiosperm lineage and show a morphologically diverse output with a simpler genetic mechanism in place when compared to the models Arabidopsis thaliana and Cucumis sativus. In turn, our results strongly suggest that the canonical trichome gene expression appears to be more conserved in vegetative than in floral tissues across angiosperms.
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