Related Experiment Video
Updated: May 11, 2026
07:55
Luciferase Complementation Imaging Assay in Nicotiana benthamiana Leaves for Transiently Determining Protein-protein Interaction Dynamics
Published on: November 20, 2017
Double repression in jasmonate-mediated plant defense.
1Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, IN 47907, USA.
Molecular Cell
|May 28, 2013
Summary
Jasmonic acid (JA) signaling is regulated by JAZ repressors. A new study identifies JAV1, a JA pathway repressor, that enhances plant defense against pathogens and insects without affecting growth.
Area of Science:
- Plant biology
- Molecular biology
- Biochemistry
Background:
- Jasmonic acid (JA) pathway is crucial for plant defense and development.
- The JAZ family of repressor proteins regulates JA functions.
- Understanding JA regulation is key to improving plant resilience.
Purpose of the Study:
- To identify novel repressor proteins in the JA pathway.
- To investigate the role of JAV1 in plant defense mechanisms.
- To determine if JAV1 influences plant growth and development.
Main Methods:
- Molecular cloning and characterization of JAV1.
- Analysis of JAV1's interaction with other JA pathway components.
- Assessing plant responses to pathogens and insects in JAV1 mutants.
Main Results:
- JAV1 was identified as a novel repressor protein in the JA pathway.
- JAV1 enhances plant defense against necrotrophic pathogens and herbivorous insects.
- JAV1's function in defense appears independent of its effect on plant growth and development.
Conclusions:
- JAV1 is a key regulator of plant defense responses mediated by JA.
- Targeting JAV1 could offer a strategy to improve crop protection against pests and diseases.
- The distinct role of JAV1 in defense without growth impact warrants further investigation.
Related Concept Videos
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...
02:04Regulation 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.
02:26Defenses Against Pathogens and Herbivores
Plants present a rich source of nutrients for many organisms, making it a target for herbivores and infectious agents. Plants, though lacking a proper immune system, have developed an array of constitutive and inducible defenses to fend off these attacks.
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.
01:15Receptor Downregulation in MVBs
Multivesicular bodies (MVBs) are mature endosomes that sort ubiquitinated proteins and then fuse with lysosomes to degrade the sorted proteins. Epidermal growth factor (EGF) and its receptor (EGFR) form a complex that can be internalized through endocytosis, sorted into an MVB, and later degraded.
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR activation may...
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR activation may...