ROS: Important factor in plant stem cell fate regulation
1Key Laboratory of Cell Activities and Stress Adaptations, Ministry of Education, Key Laboratory of Gene Editing for Breeding, Gansu Province, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China.
Journal of Plant Physiology
|September 10, 2023
Summary
Reactive oxygen species (ROS) act as crucial signaling molecules, maintaining stem cell niches in plants. Understanding ROS gradients and their regulation is key to plant development.
Area of Science:
- Plant Developmental Biology
- Cell Signaling
- Reactive Oxygen Species (ROS) Metabolism
Background:
- Reactive oxygen species (ROS) were initially viewed as toxic metabolic byproducts.
- Emerging evidence reveals ROS function as critical signaling molecules in fundamental biological processes.
- Recent research underscores the essential role of ROS in maintaining plant shoot and root stem cell niches.
Purpose of the Study:
- To review the impact of ROS distribution and gradients on stem cell niche (SCN) stability in shoot apical meristem (SAM) and root apical meristem (RAM).
- To elucidate the balance between stemness and differentiation regulated by ROS.
- To summarize transcription factors and enzymes (e.g., SOD, peroxidase) involved in ROS homeostasis.
Main Methods:
- Review of existing literature on ROS, stem cell niches, and plant development.
- Analysis of ROS gradients and their influence on stem cell fate.
- Summary of regulatory mechanisms involving transcription factors and phytohormones.
Main Results:
- ROS gradients are critical for maintaining the stability of stem cell niches in SAM and RAM.
- Transcription factors and key enzymes like superoxide dismutase (SOD) and peroxidase regulate ROS balance.
- ROS signaling is interconnected with phytohormones and cell cycle control in regulating stem cell fate and size.
Conclusions:
- ROS are pivotal signaling molecules essential for plant stem cell niche maintenance and developmental processes.
- Understanding ROS regulation, including production, distribution, homeostasis, and signal transduction, offers new insights into plant development.
- This knowledge opens avenues for future research in plant developmental biology.
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