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Defenses Against Pathogens and Herbivores

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Plants present a rich source of nutrients for many organisms, making it a target for herbivores and infectious agents. Plants, though lacking a proper immune system, have developed an array of constitutive and inducible defenses to fend off these attacks.

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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...

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Related Experiment Video

Updated: Jun 16, 2025

Live-cell Imaging of Fungal Cells to Investigate Modes of Entry and Subcellular Localization of Antifungal Plant Defensins

Live-cell Imaging of Fungal Cells to Investigate Modes of Entry and Subcellular Localization of Antifungal Plant Defensins

Published on: December 24, 2017

Structural Classification Insights Into the Plant Defensive Peptides.

Inda Setyawati¹, Ahmad Fadhlullah Husaini¹, Aprijal Ghiyas Setiawan¹

¹Department of Biochemistry, Faculty of Mathematics and Natural Sciences, IPB University, Bogor, Indonesia.

|August 20, 2024

Summary

This study reveals the evolutionary paths and structural diversity of plant defensive peptides. Key structural motifs are conserved, highlighting their crucial role in plant defense against pathogens.

Keywords:

AlphaFold ecological evolution experimental structures functional diversity phylogenetic analysis plant antimicrobial peptide plant defensive peptides structural classification structural conservation

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Last Updated: Jun 16, 2025

Live-cell Imaging of Fungal Cells to Investigate Modes of Entry and Subcellular Localization of Antifungal Plant Defensins

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Published on: December 24, 2017

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Identification of Post-translational Modifications of Plant Protein Complexes

Identification of Post-translational Modifications of Plant Protein Complexes

Published on: February 22, 2014

Area of Science:

Plant Biology
Structural Biology
Evolutionary Biology

Background:

Plant defensive peptides are crucial for plant immunity.
Understanding their evolution and structural basis is vital for plant defense strategies.

Purpose of the Study:

To perform a structural phylogenetic analysis of plant defensive peptides.
To reveal evolutionary relationships, structural diversification, and functional adaptations.

Main Methods:

Utilized a dataset of experimental and predicted peptide structures from RCSB Protein Data Bank and AlphaFold DB.
Constructed a detailed phylogenetic tree to analyze evolutionary paths.

Main Results:

Identified distinct evolutionary paths for plant defensive peptide families.
Showcased the diversity of defensive peptides and conserved structural motifs.
Highlighted the adaptive significance of these peptides in plant evolution.

Conclusions:

Plant defensive peptides exhibit intricate evolutionary histories.
Conserved structural motifs are critical for antimicrobial and defensive functions.
Defensive peptides play a significant role in plant adaptation to ecological pressures and pathogens.