Suppressors of an Arabidopsis thaliana phyB mutation identify genes that control light signaling and hypocotyl elongation

• Published in: Genetics (Austin) Vol. 148; no. 3; pp. 1295 - 1310
• Main Authors: Reed, J.W, Elumalai, R.P, Chory, J
• Format: Journal Article
• Language: English
• Published: United States Genetics Soc America 01-03-1998; Genetics Society of America
• Subjects: ALLELES; ANATOMIA DE LA PLANTA; ANATOMIE VEGETALE; Arabidopsis - genetics; Arabidopsis - physiology; Arabidopsis Proteins; ARABIDOPSIS THALIANA; BLUE LIGHT; CARTE GENETIQUE; CHROMOSOME MAPS; CRECIMIENTO; CROISSANCE; DARKNESS; DOMINANCE; EPISTASIS; FAR RED LIGHT; FENOTIPOS; FITOCROMA; FLORACION; FLORAISON; FLOWERING; Flowers & plants; GENE; GENE INTERACTION; GENES; Genes, Plant; GENETIC INHERITANCE; GENETIC MAPPING; GENETIC MAPS; GROWTH; HEREDITE; HERENCIA GENETICA; HIPOCOTILOS; Hypocotyl; HYPOCOTYLE; HYPOCOTYLS; IDENTIFICACION; IDENTIFICATION; INHIBITOR GENES; INTERACCION DE GENES; INTERACTION GENIQUE; LARGURA; LENGTH; LIGHT; LOCI; LOCUS; LONGUEUR; LUMIERE; LUZ; MAPAS GENETICOS; MUTACION; Mutagenesis; MUTATION; OBSCURIDAD; OBSCURITE; PHENOTYPE; PHENOTYPES; Photoreceptor Cells; PHYTOCHROME; Phytochrome - genetics; Phytochrome B; PLANT ANATOMY; Plant Proteins - genetics; Plant Roots - physiology; PLANTULAS; PLANTULE; RACINE; RAICES; RED LIGHT; ROOTS; SEEDLINGS; SEGREGACION; SEGREGATION; TEMPS; TIEMPO; TIME; Time Factors; Transcription Factors; WHITE LIGHT
• ISSN: 0016-6731; 1943-2631; 1943-2631
• DOI: 10.1093/genetics/148.3.1295

Ambient light controls the development and physiology of plants. The Arabidopsis thaliana photoreceptor phytochrome B (PHYB) regulates developmental light responses at both seedling and adult stages. To identify genes that mediate control of development by light, we screened for suppressors of the long hypocotyl phenotype caused by a phyB mutation. Genetic analyses show that the shy (short hypocotyl) mutations we have isolated fall in several loci. Phenotypes of the mutants suggest that some of the genes identified have functions in control of light responses. Other loci specifically affect cell elongation or expansion.