Metabolism during adventitious root primordia initiation and development

The formation of adventitious root primordia (ARP) is an ecological precious developmental event in the plant. The ARP evolution is a crucial step for the plant to fulfill two important phases of the life cycle, viz., vegetative and reproduction. The identification of several candidate genes has been known to provoke the induction, initiation, and maintenance of ARP-associated signaling cascading network. The expression of various genes, including WOUND INDUCED DEDIFFERENTIATION (WIND) genes induction such as APETALA2/ETHYLENE RESPONSE FACTORs (AP2/ERFs), CLAVATA3/EMBRYO SURROUNDING REGION-RELATED, ABERRANT LATERAL ROOT FORMATION4 (ALF4), was observed to be enhanced during ARP formation. This chapter highlights the histological documentation of adventitious root development, the role of phytohormones in adventitious root (AR) development, the role of sugars in AR development, the role of signaling peptides in AR development, epigenetic control in AR development, and cell wall modification during AR emergence. Additionally, the role of phytohormones and their molecular network is also explained during ARP initiation, elongation, and maturation in different plant species. Furthermore, the genetic signals that play an important role in the crosstalk generate complex network that regulates the generation of ARP.