Related Experiment Video
Updated: Mar 17, 2026
09:27
High Resolution Quantification of Crystalline Cellulose Accumulation in Arabidopsis Roots to Monitor Tissue-specific Cell Wall Modifications
Published on: May 10, 2016
8.7K
Brassinosteroid signaling and BRI1 dynamics went underground
1Laboratoire Reproduction et Développement des Plantes, Univ Lyon, ENS de Lyon, Université Claude Bernard Lyon 1, CNRS, INRA, F-69342 Lyon, France.
Current Opinion in Plant Biology
|July 16, 2016
Summary
Plant hormones called brassinosteroids (BRs) are key to growth. Recent research using Arabidopsis roots reveals novel insights into BR signaling and its role in root development.
Area of Science:
- Plant Biology
- Molecular Biology
- Biochemistry
Background:
- Brassinosteroids (BRs) are plant hormones regulating growth, primarily studied in above-ground organs.
- The brassinosteroid signaling pathway was extensively studied concerning hypocotyl elongation.
- Recent advancements have shifted focus to root systems for understanding BR signaling.
Purpose of the Study:
- To investigate the role of brassinosteroids in root growth and development.
- To characterize brassinosteroid perception at the cell membrane in Arabidopsis roots.
- To dissect tissue-specific brassinosteroid actions in controlling root architecture.
Main Methods:
- Utilizing the Arabidopsis root as a model system for cell biology studies.
- Detailed characterization of brassinosteroid perception mechanisms at the plasma membrane.
- Analysis of brassinosteroid signaling pathways in specific root tissues.
Main Results:
- Brassinosteroid perception at the cell surface is crucial for root development.
- The Arabidopsis root system provides a powerful model for dissecting BR signaling.
- BRs were shown to act in a tissue-specific manner to regulate root growth.
Conclusions:
- The root system is a key model for understanding brassinosteroid hormone action.
- Brassinosteroid signaling plays a vital role in controlling plant root architecture.
- Further research on BRs in roots promises significant advancements in plant science.
More Related Videos
Related Concept Videos
01:25Cell Signaling in Plants
6.9K
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...
6.9K
01:30Assembly of Signaling Complexes
7.0K
Multiprotein signaling complexes are formed in a dynamic process involving protein-protein interactions at the cytoplasmic domain of transmembrane receptors or enzymatic and non-enzymatic proteins associated with the receptor. These complexes ensure the activation and propagation of intracellular signals that regulate cell functions.
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
7.0K
01:22Amplifying Signals via Enzymatic Cascade
19.0K
When a ligand binds to a cell-surface receptor, the receptor's intracellular domain changes shape, which may either activate its enzyme function or allow its binding to other molecules. The initial signal is amplified by most signal transduction pathways. This means that a single ligand molecule can activate multiple molecules of a downstream target. Proteins that relay a signal are most commonly phosphorylated at one or more sites, activating or inactivating the protein. Kinases catalyze...
19.0K
01:16TGF - β Signaling Pathway
10.8K
The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors...
10.8K
01:20The JAK-STAT Signaling Pathway
13.7K
Several cytokine receptors have tightly bound Janus kinase or JAK proteins attached at their cytosolic tail. Small signaling molecules such as cytokines, growth hormones, or prolactins bind to the cytokine receptors and initiate their dimerization. The dimerization brings the cytosolic JAKs together that trans-phosphorylate and activates each other. The activated JAKs now phosphorylate cytosolic tails of the cytokine receptors, which serve as binding sites for adaptor proteins such as SH2...
13.7K
01:17Intracellular Signaling Affects Focal Adhesions
3.8K
Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
Some...
Some...
3.8K