Le cambium, structure, fonctionnement et contrôle de l'activité saisonnière

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Abstract
The cambium is both a meristem producing secondary vascular tissues and a bridge between bark and wood. Its structure and seasonal activity more or less directly influence wood properties and production. It is generally considered that hormonal level is an essential factor of the regulation of cambial activity and xylogenesis. However, cambial response to hormonal stimuli depends on the season. In fact, polarized cells and active transmembrane transport systems are a prerequisite for a positive response.