AUTHOR=Perianez-Rodriguez Juan , Manzano Concepcion , Moreno-Risueno Miguel A. 

TITLE=Post-embryonic organogenesis and plant regeneration from tissues: two sides of the same coin?

JOURNAL=Frontiers in Plant Science

VOLUME=5

YEAR=2014

URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2014.00219

DOI=10.3389/fpls.2014.00219

ISSN=1664-462X

ABSTRACT=<p>Plants have extraordinary developmental plasticity as they continuously form organs during post-embryonic development. In addition they may regenerate organs upon <italic>in vitro</italic> hormonal induction. Advances in the field of plant regeneration show that the first steps of <italic>de novo</italic> organogenesis through <italic>in vitro</italic> culture in hormone containing media (via formation of a proliferating mass of cells or callus) require root post-embryonic developmental programs as well as regulators of auxin and cytokinin signaling pathways. We review how hormonal regulation is delivered during lateral root initiation and callus formation. Implications in reprograming, cell fate and pluripotency acquisition are discussed. Finally, we analyze the function of cell cycle regulators and connections with epigenetic regulation. Future work dissecting plant organogenesis driven by both endogenous and exogenous cues (upon hormonal induction) may reveal new paradigms of common regulation.</p>