Related Experiment Video
Updated: Jan 30, 2026
08:45
Assay for Pathogen-Associated Molecular Pattern PAMP-Triggered Immunity PTI in Plants
Published on: September 9, 2009
27.8K
Dissecting the pathways coordinating patterning and growth by plant boundary domains
Aude Maugarny-Calès1,2, Millán Cortizo1, Bernard Adroher1
1Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, France.
Plos Genetics
|January 25, 2019
Summary
Boundary domains regulated by CUC2 control plant leaf development. CUC2 (Cup-shaped cotyledon 2) initiates patterning and growth, with KLUH acting downstream to modulate auxin response for complex leaf formation.
Area of Science:
- Plant biology
- Developmental biology
- Genetics
Background:
- Boundary domains are crucial for morphogenesis in plants and animals.
- The CUC genes define boundary domains in aerial plant structures.
- CUC genes regulate leaf complexity across Angiosperms.
Purpose of the Study:
- To investigate the role of CUC2 in boundary-controlled morphogenesis.
- To understand how CUC2 coordinates patterning and growth during leaf margin development.
- To elucidate the genetic and molecular network downstream of CUC2.
Main Methods:
- Utilized conditional restoration of CUC2 function in Arabidopsis.
- Employed morphometrics to analyze tooth formation.
- Quantified gene expression and hormone signaling pathways.
Main Results:
- Tooth morphogenesis comprises distinct patterning and growth phases.
- CUC2 is essential for patterning but not for growth.
- CUC2 activates functional relays, including KLUH, to promote growth.
- KLUH modulates auxin response downstream of CUC2 and can rescue CUC2 deficiency.
Conclusions:
- CUC2-defined boundaries coordinate patterning and growth during leaf margin morphogenesis.
- A genetic network involving CUC2 and KLUH regulates plant development.
- Understanding these mechanisms provides insights into leaf complexity and evolution.
Related Concept Videos
02:36Meristems and Plant Growth
49.5K
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.
49.5K
02:36Cells Coordinate Growth and Proliferation
5.1K
Cell size is a significant factor impacting cellular design, function, and fitness. There exists some internal coordination by which cells double their masses before division, thus, achieving homeostasis. Coordination between cell growth and proliferation depends on the checkpoints in between cell cycle phases. Loss of coordination or failure in the checkpoint mechanism can drive the cell to uncontrolled growth and loss of cellular function. Like dividing cells that coordinate cellular growth,...
5.1K
01:29Oxygen Requirements and Growth Patterns
1.4K
Microorganisms exhibit diverse oxygen requirements and growth patterns driven by their metabolic strategies and environmental adaptations. Oxygen, while essential for many organisms, can also be toxic under certain conditions, shaping how microorganisms grow and survive.Oxygen Requirements of MicroorganismsMicroorganisms are classified based on their ability to use or tolerate oxygen:● Obligate aerobes like Mycobacterium tuberculosis need oxygen for energy production, as it serves as the...
1.4K
02:57Coordination Number and Geometry
19.0K
For transition metal complexes, the coordination number determines the geometry around the central metal ion. Table 1 compares coordination numbers to molecular geometry. The most common structures of the complexes in coordination compounds are octahedral, tetrahedral, and square planar.
19.0K
01:27C4 Pathway and CAM
49.1K
Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
C4 Pathway
The C4 pathway is used by plants such as...
C4 Pathway
The C4 pathway is used by plants such as...
49.1K
02:54Coordination Compounds and Nomenclature
26.7K
In most main group element compounds, the valence electrons of the isolated atoms combine to form chemical bonds that satisfy the octet rule. For instance, the four valence electrons of carbon overlap with electrons from four hydrogen atoms to form CH4. The one valence electron leaves sodium and adds to the seven valence electrons of chlorine to form the ionic formula unit NaCl (Figure 1a). Transition metals do not normally bond in this fashion. They primarily form coordinate covalent bonds, a...
26.7K