Related Experiment Video
Updated: May 31, 2026

The Terroir Concept Interpreted through Grape Berry Metabolomics and Transcriptomics
Published on: October 5, 2016
Epigenetic repressor-like genes are differentially regulated during grapevine (Vitis vinifera L.) development
Rubén Almada1, Nuri Cabrera, José A Casaretto
1Instituto de Biología Vegetal y Biotecnología, Universidad de Talca, Talca, Chile. ralmada@inia.cl
Grapevine flowering is seasonally separated. Epigenetic repressor genes (VvCLF, VvEMF2, VvMSI1, VvSWN, VvFIE) are expressed during bud development, suggesting a role in seasonal flowering control.
Area of Science:
- Plant molecular biology
- Epigenetics
- Developmental biology
Background:
- Grapevine sexual reproduction exhibits seasonal separation between inflorescence primordium formation and flower development.
- Epigenetic mechanisms are hypothesized to regulate this seasonal separation in grapevines.
Purpose of the Study:
- To investigate the role of grapevine epigenetic repressor genes in seasonal flowering.
- To analyze the expression patterns of five grapevine genes homologous to Arabidopsis epigenetic repressors.
Main Methods:
- Gene expression analysis of five grapevine genes (VvCLF, VvEMF2, VvMSI1, VvSWN, VvFIE) during grapevine bud and organ development.
- Comparison with homologous Arabidopsis epigenetic repressor genes.
Main Results:
- Grapevine PcG-like genes (VvCLF, VvEMF2, VvMSI1, VvSWN, VvFIE) are primarily expressed in latent buds during flowering induction.
- These genes are also detected during bud burst, inflorescence, and flower development.
- Expression was also observed in fruits and vegetative organs.
Conclusions:
- Overlapping expression patterns of grapevine PcG-like genes in buds suggest chromatin remodeling regulates seasonal flowering, dormancy, and bud burst.
- Epigenetic changes likely regulate cell proliferation-differentiation transitions throughout grapevine development.
More Related Videos
10:40Comprehensive Workflow for the Genome-wide Identification and Expression Meta-analysis of the ATL E3 Ubiquitin Ligase Gene Family in Grapevine
Published on: December 22, 2017
10:44In Vitro Selection of Engineered Transcriptional Repressors for Targeted Epigenetic Silencing
Published on: May 5, 2023
Related Concept Videos
Eukaryotic Transcription Inhibitors
Eukaryotic transcription inhibitors usually contain two distinct domains, a DNA...
Constitutive and Regulated Gene Expression
Co-activators and Co-repressors
Co-activators and Co-repressors
RNA Polymerase II Accessory Proteins
Epigenetic Regulation