Related Experiment Video
Updated: Jun 17, 2026
05:22
Identification of the Genes Involved in Stomatal Development via Epidermal Phenotype Scoring
Published on: January 20, 2023
Gibberellin and jasmonate crosstalk during stamen development
1Laboratory of Functional Genomics, College of Animal Sciences, Zhejiang University, Hangzhou 310029, China. pengjr@zju.edu.cn
Journal of Integrative Plant Biology
|December 22, 2009
Summary
Gibberellin and jasmonate hormones interact to control stamen filament growth. Gibberellin promotes jasmonate production, which then activates key MYB genes for normal stamen development in Arabidopsis.
Area of Science:
- Plant biology
- Molecular biology
- Genetics
Background:
- Phytohormones gibberellin (GA) and jasmonate (JA) are critical for stamen development.
- Deficiency in GA or JA leads to shortened stamens in plants like Arabidopsis.
- The precise relationship between GA and JA signaling in stamen development requires clarification.
Purpose of the Study:
- To elucidate the hierarchical relationship between gibberellin and jasmonate signaling pathways during stamen filament development.
- To investigate how GA influences JA biosynthesis and subsequent gene expression.
Main Methods:
- Analysis of gene expression related to JA biosynthesis.
- Investigating the role of MYB transcription factors in stamen development.
- Utilizing Arabidopsis mutants deficient in GA or JA.
Main Results:
- Gibberellin (GA) positively regulates genes involved in jasmonate (JA) biosynthesis, enhancing JA production.
- Elevated JA levels induce the expression of MYB21, MYB24, and MYB57 transcription factors.
- These MYB genes are essential for normal stamen filament elongation in Arabidopsis.
Conclusions:
- GA and JA signaling pathways are interconnected in a hierarchical manner for stamen development.
- GA acts upstream of JA biosynthesis, establishing a hormonal cascade.
- The GA-JA-MYB regulatory module is crucial for Arabidopsis stamen filament growth.
Related Concept Videos
02:04Regulation of Transpiration by Stomata
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.
01:25Cell Signaling in Plants
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...
02:19Morphogenesis
Plant morphogenesis—the development of a plant’s form and structure—involves several overlapping developmental processes, including growth and cell differentiation. Precursor cells differentiate into specific cell types, which are organized into the tissues and organ systems that make up the functional plant.
01:56Plant Hormones
Plant hormones—or phytohormones—are chemical molecules that modulate one or more physiological processes of a plant. In animals, hormones are often produced in specific glands and circulated via the circulatory system. However, plants lack hormone-producing glands.
01:56Plant Hormones
Plant hormones—or phytohormones—are chemical molecules that modulate one or more physiological processes of a plant. In animals, hormones are often produced in specific glands and circulated via the circulatory system. However, plants lack hormone-producing glands.
01:17Gene Regulation During Sporulation
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...