Related Experiment Videos
Systemic acquired resistance
L Sticher1, B Mauch-Mani, J P Métraux
1Institut de Biologie Vegetale, Universite de Fribourg, 3 route A. Gockel, Fribourg, 1700 Switzerland. jean-pierre.metraux@unifr.ch
Annual Review of Phytopathology
|January 1, 1997
Summary
Plants exhibit induced resistance (SAR) against invaders, similar to mammalian immunization. This involves molecular events like lignification, pathogenesis-related proteins, and signals such as salicylic acid.
Area of Science:
- Plant Pathology
- Molecular Biology
- Biochemistry
Background:
- Plants possess defense mechanisms against pathogens and insects.
- Induced systemic resistance (SAR) provides broad-spectrum protection.
- Understanding SAR mechanisms is crucial for crop protection.
Purpose of the Study:
- To examine induced resistance (SAR) in plants.
- To elucidate the molecular events and signals underlying SAR.
- To review chemical activators and plant examples of SAR.
Main Methods:
- Review of literature on SAR mechanisms.
- Analysis of molecular events: lignification, PR proteins, signaling molecules.
- Compilation of information on chemical activators and SAR-exhibiting plants.
Main Results:
- SAR confers quantitative, broad-spectrum protection.
- Key molecular events include structural barriers and pathogenesis-related proteins.
- Salicylic acid, systemin, ethylene, jasmonates, and electrical signals are involved in SAR.
Conclusions:
- SAR is a complex plant defense mechanism.
- Multiple molecular and signaling pathways contribute to SAR.
- Chemical activators can induce SAR, offering potential for crop protection.