Related Experiment Video
Updated: Jul 11, 2026
05:22
Identification of the Genes Involved in Stomatal Development via Epidermal Phenotype Scoring
Published on: January 20, 2023
Plant signalling peptides: some recent developments
Agata Bahyrycz1, Danuta Konopińska
1Faculty of Chemistry, University of Wrocław, 50-383 Wrocław, F. Joliot-Curie 14, Poland.
Summary
Plant signaling peptides regulate key growth and physiological functions. This review details their structure, properties, and function, focusing on systemin and phytosulfokines (PSKs).
Area of Science:
- Plant Biology
- Molecular Biology
- Biochemistry
Background:
- Plant signaling peptides are crucial regulators of plant development and physiology.
- A new generation of peptides, including systemin, phytosulfokines (PSKs), ENOD40, and CLAVATA3, play vital roles.
- Understanding these peptides is key to deciphering complex plant processes.
Purpose of the Study:
- To review the structure, biological properties, and function of various plant signaling peptides.
- To explore the relationship between the structure and biological function of these peptides.
- To highlight findings on well-studied peptides like systemin and PSK-alpha.
Main Methods:
- Literature review of existing data on plant signaling peptides.
- Analysis of own research results.
- Comparative analysis of peptide structures and their biological activities.
Main Results:
- Detailed discussion of the structure and biological properties of systemin, PSKs, ENOD40, CLAVATA3, Locus-S, POLARIS, IDA, and ROT4.
- Elucidation of the structure/biological function relationship for key peptides.
- In-depth analysis of systemin and PSK-alpha, revealing specific structure-activity correlations.
Conclusions:
- Plant signaling peptides represent a vital class of molecules regulating diverse physiological functions.
- The structure of these peptides is intrinsically linked to their specific biological roles.
- Further research into systemin and PSKs can provide deeper insights into plant signaling mechanisms.
Related Concept Videos
01:25Cell Signaling in Plants
Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...
01:56Plant Hormones
Plant hormones—or phytohormones—are chemical molecules that modulate one or more physiological processes of a plant. In animals, hormones are often produced in specific glands and circulated via the circulatory system. However, plants lack hormone-producing glands.
01:56Plant Hormones
Plant hormones—or phytohormones—are chemical molecules that modulate one or more physiological processes of a plant. In animals, hormones are often produced in specific glands and circulated via the circulatory system. However, plants lack hormone-producing glands.
02:12Short-distance Transport of Resources
Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
01:41Signal Sequences and Sorting Receptors
Signal sequences are short amino acid sequences that guide newly synthesized proteins to their proper location within the cell. Classical signal sequences are fifteen to sixty amino acids long and present at the N-terminus of a polypeptide chain. Each signal sequence has a conserved segment of basic residues towards their N terminus, a hydrophobic core, and a C-terminus rich in polar residues. The C-terminus also contains a signal cleavage site and features a -3 -1 sequence motif. The -3-1...
01:32Types of Signaling Molecules
In multicellular organisms, many molecules transmit signals between cells to pass information. These signals vary in complexity and include small peptides, nucleotides, steroids, fatty acid derivatives, and dissolved gases such as nitric oxide. Some signaling molecules diffuse through the plasma membrane to act locally between neighboring cells or travel long distances. Others remain attached to the cell surface, transmitting information to other cells only when they make contact. In some...