title: GA3 content in young and mature antheridia of Chara tomentosa estimated by capillary electrophoresis.
abstract: The content of gibberellic acid (GA3) in male sex organs of Chara tomentosa L. was estimated using capillary electrophoresis. Young antheridia contained 0.25 microg GA3 while mature ones 0.48 microg per antheridium. Although there are significant differences in GA3 content in antheridia between C. vulgaris and C. tomentosa, these values calculated per one spermatid are 2.4 and 3.3 pg, respectively. The present results compiled with the previous knowledge about regulation of GA3-dependent development of Characeae species allow an implication that the mechanisms controlling antheridia differentiation in both species can be similar.
authors.affiliation: Department of Cytophysiology, University of Lódź, Poland. kazand@biol.uni.lodz.pl
authors.forename: Andrzej
authors.initials: A
authors.lastname: Kaźmierczak
authors.forename: Dariusz
authors.initials: D
authors.lastname: Stepiński
mesh_terms: D000818:Animals; D044784:Chara / Q000737:chemistry* / Q000254:growth & development; D019075:Electrophoresis, Capillary / Q000379:methods; D018525:Germination; D005875:Gibberellins / Q000032:analysis*; D008297:Male; D013045:Species Specificity; D013997:Time Factors
chemical_list: D005875:Gibberellins; C007842:gibberellic acid