Related Experiment Video
Updated: Aug 22, 2025
09:31
Inducible, Cell Type-Specific Expression in Arabidopsis thaliana Through LhGR-Mediated Trans-Activation
Published on: April 19, 2019
9.7K
PhMYB37 Promotes Shoot Branching in Petunia
Lili Dong1, Tianyin Yang1, Di Gao1
1College of Horticulture, Anhui Agricultural University, Hefei 230036, China.
Genes
|November 11, 2022
Summary
Petunia
Area of Science:
- Plant Biology
- Genetics
- Molecular Biology
Background:
- Petunia (Petunia) is a globally significant ornamental flower.
- Plant branching is a crucial trait for plant architecture and yield.
- MYB transcription factors are known regulators of plant branching.
Purpose of the Study:
- To identify and characterize MYB transcription factors involved in petunia shoot branching.
- To investigate the specific role of PhMYB37 in regulating axillary bud development.
Main Methods:
- Genome-wide identification of R2R3-MYB genes in petunia.
- Gene expression analysis using quantitative real-time PCR.
- Subcellular localization of PhMYB37.
- Functional analysis via heterologous expression in Arabidopsis and gene silencing in petunia.
Main Results:
- 113 R2R3-MYB genes were identified in the petunia genome.
- PhMYB37, a homolog of RAX genes, showed higher expression in axillary buds and roots.
- PhMYB37 localized to the nucleus.
- Overexpression of PhMYB37 promoted branching in Arabidopsis, while silencing inhibited it.
Conclusions:
- PhMYB37 is a key positive regulator of shoot branching in petunia.
- This study elucidates the function of a specific MYB factor in controlling plant architecture.
Related Concept Videos
03:02Primary and Secondary Growth in Roots and Shoots
57.7K
Vascular plants, which account for over 90% of the Earth’s vegetation, all undergo primary growth—which lengthens roots and shoots. Many land plants, notably woody plants, also undergo secondary growth—which thickens roots and shoots.
57.7K
02:27Trihybrid Crosses
23.6K
Trihybrid Crosses
Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
The F1 generation plants of a trihybrid cross are heterozygous for all three traits and produce eight gametes. Upon self-fertilization, these gametes have an equal...
Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
The F1 generation plants of a trihybrid cross are heterozygous for all three traits and produce eight gametes. Upon self-fertilization, these gametes have an equal...
23.6K
01:20Monohybrid Crosses
230.7K
Overview
230.7K
02:36Meristems and Plant Growth
46.4K
Plants grow throughout their lives; this is called indeterminate growth, and it distinguishes plants from most animals. Although certain parts of plants stop growing (e.g., leaves and flowers), others grow continuously—like roots and stems.
46.4K
01:25Cell Signaling in Plants
5.7K
Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...
5.7K