Related Experiment Video
Updated: Jan 13, 2026

10:29
Measuring Gene Expression in Bombarded Barley Aleurone Layers with Increased Throughput
Published on: March 30, 2018
6.9K
RrMYB2 Regulates Drought Stress via RrJMJ12-Dependent Epigenetic Modification in Rosa rugosa
Mengjuan Bai1, Yating Yang1, Yunfeng Gao1
1College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou, China.
Plant Biotechnology Journal
|October 28, 2025
Summary
Rosa rugosa drought tolerance is enhanced by RrMYB2 transcription factor. This factor works with RrJMJ12 epigenetic modifier to regulate plant response to drought stress.
Area of Science:
- Plant Biology
- Molecular Genetics
- Epigenetics
Background:
- Rosa rugosa is economically important but susceptible to drought.
- Molecular mechanisms of drought response in R. rugosa are poorly understood.
Purpose of the Study:
- Identify key regulators of drought tolerance in R. rugosa.
- Elucidate the molecular pathway involving RrMYB2 in drought response.
Main Methods:
- Gene cloning and overexpression in Arabidopsis thaliana and R. rugosa.
- Virus-induced gene silencing of RrMYB2.
- RNA sequencing (RNA-seq) analysis.
- Biochemical assays and protein interaction studies.
Main Results:
- RrMYB2 overexpression enhanced drought tolerance; silencing impaired it.
- Silencing RrMYB2 led to upregulation of protein phosphatase 2C (PP2C) genes.
- RrMYB2 interacts with RrJMJ12, an H3K27me3 histone demethylase.
- The RrMYB2-RrJMJ12 complex inhibits PP2C gene promoter binding, especially under drought.
Conclusions:
- RrMYB2 is a positive regulator of drought tolerance in R. rugosa.
- A novel mechanism involves RrMYB2 cooperating with epigenetic modifier RrJMJ12 to regulate drought tolerance.
- This complex negatively regulates PP2C genes, crucial for drought response.
More Related Videos
Related Concept Videos
Regulation of Transpiration by Stomata
30.9K
During photosynthesis, plants acquire the necessary carbon dioxide and release the produced oxygen back into the atmosphere. Openings in the epidermis of plant leaves is the site of this exchange of gasses. A single opening is called a stoma—derived from the Greek word for “mouth.” Stomata open and close in response to a variety of environmental cues.
30.9K
Adaptations that Reduce Water Loss
27.9K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
27.9K
Responses to Drought and Flooding
11.9K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
11.9K
Cell Signaling in Plants
6.1K
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...
6.1K
Gene Regulation During Sporulation
436
Sporulation is a complex developmental process that allows certain Gram-positive bacteria, such as Bacillus subtilis and Clostridium species, to survive extreme environmental conditions. This process is tightly regulated by a series of signaling cascades and transcriptional controls, ensuring the formation of a highly resistant endospore.Sporulation is triggered by unfavorable conditions, such as nutrient depletion, and is governed by a phosphorelay system. One of the sensor kinases, such as...
436
Riboswitches
9.5K
Riboswitches are non-coding mRNA domains that regulate the transcription and translation of downstream genes without the help of proteins. Riboswitches bind directly to a metabolite and can form unique stem-loop or hairpin structures in response to the amount of the metabolite present. They have two distinct regions – a metabolite-binding aptamer and an expression platform.
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...
9.5K

