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Peptide Signaling Pathways Regulate Plant Vascular Development
Bingjian Yuan1, Huanzhong Wang1,2
1Department of Plant Science and Landscape Architecture, University of Connecticut, Storrs, CT, United States.
Frontiers in Plant Science
|September 20, 2021
Summary
Plant small peptides like CLAVATA3/EMBRYO SURROUNDING REGION-RELATED (CLE) and Epidermal Patterning Factor-Like (EPFL) are key regulators of vascular development. This review summarizes their roles and interactions, highlighting future research directions.
Area of Science:
- Plant Biology
- Molecular Biology
- Developmental Biology
Background:
- Plant small peptides, including CLE and EPFL peptides, are crucial for cell-cell communication in development.
- CLE peptides (e.g., CLE41/44, CLE42) from phloem regulate cambial proliferation and xylem differentiation.
- EPFL peptides (e.g., EPFL4, EPFL6) from endodermis modulate stem vascular development, while root vascular development involves CLE9, CLE10, and CLE45.
Purpose of the Study:
- To summarize recent advances in understanding the function of CLE and EPFL peptides in vascular development.
- To discuss the interactions between peptide signaling pathways and plant hormone signals.
- To highlight future perspectives for research on these peptide families in vascular biology.
Main Methods:
- Literature review of recent studies on peptide signaling in plant vascular development.
- Analysis of the roles of specific CLE and EPFL peptides in stem and root vascular tissues.
- Discussion of signaling pathway crosstalk with plant hormones.
Main Results:
- Phloem-derived CLE peptides promote (pro-)cambial cell proliferation and inhibit xylem differentiation.
- Endodermis-derived EPFL peptides modulate vascular development in the stem.
- Specific CLE peptides are critical for root vascular development, and peptide pathways interact and crosstalk with hormone signals.
Conclusions:
- CLE and EPFL peptides are essential regulators of plant vascular development across different tissues.
- Understanding peptide signaling networks and their integration with hormone pathways is key for future research.
- Further investigation into CLE and EPFL peptides offers promising avenues for controlling vascular growth and function.
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