title: Hormone symphony during root growth and development.
abstract: Hormones regulate plant growth and development in response to external environmental stimuli via complex signal transduction pathways, which in turn form complex networks of interaction. Several classes of hormones have been reported, and their activity depends on their biosynthesis, transport, conjugation, accumulation in the vacuole, and degradation. However, the activity of a given hormone is also dependent on its interaction with other hormones. Indeed, there is a complex crosstalk between hormones that regulates their biosynthesis, transport, and/or signaling functionality, although some hormones have overlapping or opposite functions. The plant root is a particularly useful system in which to study the complex role of plant hormones in the plastic control of plant development. Physiological, cellular, and molecular genetic approaches have been used to study the role of plant hormones in root meristem homeostasis. In this review, we discuss recent findings on the synthesis, signaling, transport of hormones and role during root development and examine the role of hormone crosstalk in maintaining homeostasis in the apical root meristem.
authors.affiliation: Laboratorio de Genética Molecular, Desarrollo y Evolución de Plantas, Instituto de Ecología, Universidad Nacional Autónoma de México, México D.F., México. garay.adriana@gmail.com
authors.forename: Adriana
authors.initials: A
authors.lastname: Garay-Arroyo
authors.forename: María
authors.initials: M
authors.lastname: De La Paz Sánchez
authors.forename: Berenice
authors.initials: B
authors.lastname: García-Ponce
authors.forename: Eugenio
authors.initials: E
authors.lastname: Azpeitia
authors.forename: Elena R
authors.initials: ER
authors.lastname: Alvarez-Buylla
mesh_terms: D017360:Arabidopsis / Q000166:cytology / Q000196:embryology*; D001693:Biological Transport, Active / Q000502:physiology; D018519:Meristem / Q000166:cytology / Q000196:embryology*; D010937:Plant Growth Regulators / Q000378:metabolism*; D015398:Signal Transduction / Q000502:physiology*
chemical_list: D010937:Plant Growth Regulators