title: Evidence of Epigenetic Mechanisms Affecting Carotenoids.
abstract: Epigenetic mechanisms are able to regulate plant development by generating non-Mendelian allelic interactions. An example of these are the responses to environmenal stimuli that result in phenotypic variability and transgression amongst important crop traits. The need to predict phenotypes from genotypes to understand the molecular basis of the genotype-by-environment interaction is a research priority. Today, with the recent discoveries in the field of epigenetics, this challenge goes beyond analyzing how DNA sequences change. Here we review examples of epigenetic regulation of genes involved in carotenoid synthesis and degradation, cases in which histone- and/or DNA-methylation, and RNA silencing at the posttranscriptional level affect carotenoids in plants.
authors.affiliation: International Center for Tropical Agriculture (CIAT), A.A. 6713, Cali, Colombia. j.arango@cgiar.org.
authors.forename: Jacobo
authors.initials: J
authors.lastname: Arango
authors.affiliation: Agronomy and Horticulture Department, University of Nebraska-Lincoln, Beadle Center 1901 Vine Street, Lincoln, NE, 68588-0660, USA.
authors.forename: Jesús
authors.initials: J
authors.lastname: Beltrán
authors.affiliation: International Center for Tropical Agriculture (CIAT), A.A. 6713, Cali, Colombia.
authors.forename: Jonathan
authors.initials: J
authors.lastname: Nuñez
authors.affiliation: International Center for Tropical Agriculture (CIAT), A.A. 6713, Cali, Colombia.
authors.forename: Paul
authors.initials: P
authors.lastname: Chavarriaga
mesh_terms: D002338:Carotenoids / Q000235:genetics* / Q000378:metabolism; D019175:DNA Methylation / Q000235:genetics*; D044127:Epigenesis, Genetic; D018506:Gene Expression Regulation, Plant; D059647:Gene-Environment Interaction; D005838:Genotype; D006657:Histones / Q000235:genetics / Q000378:metabolism; D010641:Phenotype; D063245:Plant Development / Q000235:genetics*; D034622:RNA Interference
chemical_list: D006657:Histones; D002338:Carotenoids
keywords: Epigenetic; Genotype-environment; Histone methylation; SDG8; microRNA