title: Spatio-temporal changes in endogenous abscisic acid contents during etiolated growth and photomorphogenesis in tomato seedlings.
abstract: The role of abscisic acid (ABA) during early development was investigated in tomato seedlings. The endogenous content of ABA in particular organs was analyzed in seedlings grown in the dark and under blue light. Our results showed that in dark-grown seedlings, the ABA accumulation was maximal in the cotyledons and elongation zone of hypocotyl, whereas under blue-light, the ABA content was distinctly reduced. Our data are consistent with the conclusion that ABA promotes the growth of etiolated seedlings and the results suggest that ABA plays an inhibitory role in de-etiolation and photomorphogenesis in tomato.
authors: a Laboratory of Growth Regulators & Department of Chemical Biology and Genetics ; Center of the Region Haná for Biotechnological and Agricultural Research; Faculty of Science; Palacký University & Institute of Experimental Botany ASCR ; Olomouc , Czech Republic.
authors: Jan F
authors: JF
authors: Humplík
authors: Veronika
authors: V
authors: Turečková
authors: Martin
authors: M
authors: Fellner
authors: Véronique
authors: V
authors: Bergougnoux
mesh_terms: D000040:Abscisic Acid / Q000378:metabolism*; D018548:Cotyledon / Q000254:growth & development*; D064527:Etiolation; D018546:Hypocotyl / Q000254:growth & development*; D008027:Light; D018551:Solanum lycopersicum / Q000254:growth & development / Q000378:metabolism*; D036226:Seedlings / Q000254:growth & development / Q000378:metabolism
chemical_list: D000040:Abscisic Acid
keywords: abscisic acid; blue-light; etiolated growth; photomorphogenesis; tomato