Systemic Acquired Resistance ·
One Leaf → Whole-Plant Immunity
un
seel
.com · SA→MeSA→NPR1→PR genes
Onset
6–24 h
Duration
weeks
Stage
healthy plant
Pathogen / hypersensitive cell death
Salicylic acid (SA)
MeSA (mobile volatile)
NPR1 / PR gene activation
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.com · Systemic Acquired Resistance