Repair and regeneration. Injury program includes:. Damage control. Abscission. Injury program. Vascular repair. Primordium activation (dormant buds). New organ initiation. Primary signals. O 2 C 2 H 4 MeJ or SA Δ [IAA] Δ [CK] Response to injury is local &/or systemic . PAL. aa.
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Injury program includes:
Primordium activation (dormant buds)
New organ initiation
MeJ or SA
Systemic = upregulation of PAL and chalcone synthase Damage control, ‘immune’ response in whole body
Cork forms over injury
Parenchyma cells de-differentiate procambium vascular tissue
Dormant primordia released
Root external view of primordia
IAA apical dominance
CK made in roots
CK axillary/lateral bud growth
What happens if herbivore removes SAM?
CK Root Apical dominance
What happens if something chomps on root tip?
Cuttings of stems, tubers, corms
Injury, moisture and darkness