Related Experiment Video
Updated: Aug 20, 2025
06:46
Confocal Live Imaging of Shoot Apical Meristems from Different Plant Species
Published on: March 29, 2019
12.4K
Stem Cell Basis of Shoot Branching.
Tingting Yang1, Yuling Jiao2, Ying Wang1
1College of Life Sciences, University of Chinese Academy of Sciences, 19A Yuquan Rd., Shijingshan District, Beijing 100049, China.
Plant & Cell Physiology
|November 23, 2022
Summary
Plant lateral branching relies on axillary meristems (AMs) forming from detached shoot apical meristem (SAM) cells. This process is key to understanding de novo meristem formation and stem cell development in plants.
Area of Science:
- Plant developmental biology
- Meristem formation
- Stem cell biology
Background:
- Plants continuously develop branches postembryonically to enhance space acquisition and environmental adaptation.
- Lateral branching in seed plants involves axillary meristems (AMs) initiating in leaf axils to form axillary buds.
- AMs possess developmental potential equivalent to embryonic shoot apical meristems (SAMs).
Purpose of the Study:
- To elucidate the cellular origins of axillary meristems (AMs).
- To identify key transcription factors and phytohormones regulating AM initiation.
- To understand the role of detached SAM cells in AM formation.
Main Methods:
- Investigated cellular origins of AMs in Arabidopsis thaliana.
- Identified regulatory transcription factors.
- Analyzed phytohormone roles in AM initiation.
Main Results:
- Revealed that AMs originate from a specific group of meristematic cells detached from the SAM.
- Identified critical transcription factors and phytohormones governing AM initiation.
- Established a model system for studying de novo meristem formation.
Conclusions:
- Detached SAM cells are crucial for axillary meristem initiation.
- Understanding AM formation provides insights into stem cell fate.
- This research offers a model for studying de novo meristem formation.
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