ArticlePlant physiology2022
R2R3-MYB genes coordinate conical cell development and cuticular wax biosynthesis in Phalaenopsis aphrodite.
Article in Plant physiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.
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22 citing papers in PubMed, 27 citations in OpenAlex.
- Review
- Research Progress on Regulatory Mechanisms of Conical Cell Morphogenesis inPlants (Basel, Switzerland) · 2026Review
- Transcriptional control of cuticle formation during development.Journal of experimental botany · 2026Review
- Molecular mechanisms underlying floral trait formation inHorticulture research · 2026Article
- Integrative multi-omics analysis reveals the genetic architecture of floral traits inHorticulture research · 2026Article
- Multifaceted roles and regulatory mechanisms of MYB transcription factors in plant development, secondary metabolism, and stress adaptation: current insights and future prospects.GM crops & food · 2025Review
- Evolution of short trichomes and long hairs on Nigella petals through co-option of bHLH and non-MIXTA MYB genes.Nature communications · 2025Article
- Evolution of petal patterning: blooming floral diversity at the microscale.The New phytologist · 2025Review
- Arabidopsis as a model for translational research.The Plant cell · 2025Review
- Structure and release function of fragrance glands.Horticulture research · 2025Article
- A chromosome-levelActa pharmaceutica Sinica. B · 2025Article
- Genome-Wide Identification and Expression Analysis of the GRAS Gene Family and Their Responses to Heat Stress inInternational journal of molecular sciences · 2024Article
- Beyond skin-deep: targeting the plant surface for crop improvement.Journal of experimental botany · 2023Review
- Regulation of capsule spine formation in castor.Plant physiology · 2023Article
- Apple SUMO E3 ligase MdSIZ1 regulates cuticular wax biosynthesis by SUMOylating transcription factor MdMYB30.Plant physiology · 2023Article
- A eudicotFrontiers in plant science · 2023Article
- QTL mapping and BSA-seq map a major QTL for the node of the first fruiting branch in cotton.Frontiers in plant science · 2023Article
- DhMYB22 and DhMYB60 regulate pigment intensity and floral organ shape in Dendrobium hybrid.Annals of botany · 2022Article
- All that glitters is not gold: MIXTA homologs specify epidermal patterning in orchid petals.Plant physiology · 2022Article
- Genome-wide identification and expression analysis of the GRAS gene family inFrontiers in plant science · 2022Article
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Authors and funding
10 authors at 6 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Petals of the monocot Phalaenopsis aphrodite (Orchidaceae) possess conical epidermal cells on their adaxial surfaces, and a large amount of cuticular wax is deposited on them to serve as a primary barrier against biotic and abiotic stresses. It has been widely reported that subgroup 9A members of the R2R3-MYB gene family, MIXTA and MIXTA-like in eudicots, act to regulate the differentiation of conical epidermal cells. However, the molecular pathways underlying conical epidermal cell development and cuticular wax biosynthesis in monocot petals remain unclear. Here, we characterized two subgroup 9A R2R3-MYB genes, PaMYB9A1 and PaMYB9A2 (PaMYB9A1/2), from P. aphrodite through the transient overexpression of their coding sequences and corresponding chimeric repressors in developing petals. We showed that PaMYB9A1/2 function to coordinate conical epidermal cell development and cuticular wax biosynthesis. In addition, we identified putative targets of PaMYB9A1/2 through comparative transcriptome analyses, revealing that PaMYB9A1/2 acts to regulate the expression of cell wall-associated and wax biosynthetic genes. Furthermore, a chemical composition analysis of cuticular wax showed that even-chain n-alkanes and odd-chain primary alcohols are the main chemical constituents of cuticular wax deposited on petals, which is inconsistent with the well-known biosynthetic pathways of cuticular wax, implying a distinct biosynthetic pathway occurring in P. aphrodite flowers. These results reveal that the function of subgroup 9A R2R3-MYB family genes in regulating the differentiation of epidermal cells is largely conserved in monocots and dicots. Furthermore, both PaMYB9A1/2 have evolved additional functions controlling the biosynthesis of cuticular wax.
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