Systemic acquired resistance (SAR)

 

Systemic Acquired Resistance (SAR)

 

SCN:

SCN Basics


SCN Life Cycle
SCN Life cycle pictures (May require substantial loading time)

SCN Invasion (pictures! May require substantial loading time)
2 day
4 day
6 day
8 day

SCN databases
SCN gene database
SCN genes of interest
Soybean cv SCN race

Soybean Defense Response
Defense Response overview 
Thru the microscope
Thru microarrays
microarray database
Soybean gene database

Hypersensitive response
Oxidative burst
Systemic Acquired Resistance

R genes
R gene overview
Rhg mapping
Rhg1
Rhg4

Pathways
 Jasmonic acid
Salicylic acid
Secondary products
Ethylene
Sucrose & Trehalose

Genes/enzymes              peroxidase  
copper amine oxidase

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Systemic acquired resistance (SAR) is the activation of defenses in uninfected parts of the plant.  As a result the entire plant is more resistant to a secondary infection.

SAR is long lasting and often confers broad-based resistance to different pathogens. Salicylic acid may be a signaling compound involved in transmission of the defense response throughout the plant to produce SAR. The hypersensitive response precedes SAR.

 

Representative proteins of SAR include antifungal chitinases, beta-1,3-glucanases, PR-1, PR-5.