Molecular control of adventitious root formation

The plants have an embryonically developed primary root system from the root meristem. The different postembryonic root types (lateral and adventitious) arise from stem and become the part of mature root system in plants. The development of these roots can be induced in response to environmental conditions. In the present chapter, we have reviewed the molecular regulation of adventitious root formation. The role of various phytohormones (auxin, cytokinin, jasmonic acid, abscisic acid, gibberellins, etc.) and the possible mechanism in regulation of adventitious root development are discussed. The knowledge on adventitious root development would open a new perspective to propagate many recalcitrant plants through clonal propagation. It is also crucial in understanding the mechanisms that lie in the plants to adapt adverse climatic conditions and different environmental stresses during adventitious root formation.