Nitric oxide induces adventitious root formation in herbaceous and woody plants

LANTERI, M. L.; PAGNUSSAT, G.; LAXALT, A.M.; LAMATTINA, L.

Adventitious root formation in forest trees and woody horticultural crops - from genes to applications

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Año: 2009; p. 31 - 50

  Adventitious root (AR) formation is a very complex process under the control of both endogenous (mainly plant growth regulators) and exogenous (light, temperature, wounding, etc) factors. Among plant growth regulators, auxin plays a central role in integrating and synchronizing downstream signaling from endogenous and exogenous stimuli leading to AR formation. This chapter describes and compiles physiological, biochemical and molecular evidence supporting the requirement for nitric oxide (NO) in auxin-induced AR formation. NO is a recently characterized signal molecule in plants involved in many growth, developmental and stress physiology-related processes. Auxin induces NO synthesis in the base of cucumber (Cucumis sativus) hypocotyls, a process shown to be essential to switch on the program triggering AR formation. Cucumis sativus) hypocotyls, a process shown to be essential to switch on the program triggering AR formation.