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Kinematic Analysis of Cell Division and Expansion: Quantifying the Cellular Basis of Growth and Sampling Developmental Zones in Zea mays Leaves
Published on: December 2, 2016
Does auxin binding protein 1 control both cell division and cell expansion?
Km David1, D Couch, Catherine Perrot-Rechenmann
1Institut des Sciences du Végétal, CNRS; Gif sur Yvette, France.
Plant Signaling & Behavior
|August 26, 2009
Summary
Auxin-Binding Protein 1 (ABP1) is vital for plant cell cycles. New research shows ABP1 regulates entry into the cell cycle at G(1) and G(2)/M transitions, clarifying its enigmatic role.
Area of Science:
- Plant Molecular Biology
- Cell Cycle Regulation
- Plant Hormones
Background:
- Auxin-Binding Protein 1 (ABP1) has a high affinity for auxins.
- ABP1's precise function in plant life has remained largely enigmatic for over 30 years.
Purpose of the Study:
- To investigate the role of ABP1 in plant cell cycle regulation.
- To elucidate the function of ABP1 in mediating auxin signaling for cell cycle progression.
Main Methods:
- Utilized a conditional functional knock-out of ABP1.
- Employed cellular immunization in the Bright Yellow 2 tobacco cell line.
- Studied ABP1's effects on G(1) and G(2)/M transitions.
Main Results:
- ABP1 is critical for regulating the plant cell cycle.
- ABP1 acts at both the G(1) and G(2)/M transition phases.
- ABP1 likely mediates the permissive auxin signal required for cell cycle entry.
Conclusions:
- ABP1 plays a crucial role in controlling cell cycle progression in plants.
- The study provides new insights into the function of ABP1, moving beyond its enigmatic status.
- ABP1 is a key component in auxin-mediated regulation of cell division.
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