Laser-wound stimulated adventitious root formation of cuttings involves a complex response at plant hormonal and metabolic level.

Introduction: The presence of wounds in addition to the excision-induced wounds after severance from the stock plants is known to positively influence adventitious root formation of woody plant cuttings. Previous morphological studies highlighted laser wounding as a technique allowing to precisely control the decisive ablation depth. However, the biochemical processes involved in the response of rooting to the additional wounding remained unexplored.

Stimulation of adventitious root formation by laser wounding in rose cuttings: A matter of energy and pattern.

Adventitious root (AR) formation is the basis of vegetative propagation in rose, be it stem cuttings or stenting. During this process, wounding plays a pivotal role since cell reprogramming takes place at the tissue adjacent to the wound. We investigated the effects of wounding on AR formation on leafy single-node stem cuttings of the rose rootstock 'Pfänder' (codes R02-3 and R02-6) and the cut rose cultivar 'Tan09283' (Registration name 'Beluga').