title: Exploring the link between auxin receptors, rapid cell elongation and organ tropisms.
abstract: Auxin receptor F-box proteins of the TIR1/AFB family are known to regulate auxin-induced gene expression. We could demonstrate that rapid auxin-induced hypocotyl elongation, the most classical auxin response, is only mildly affected in Arabidopsis plants in which most of the receptor genes have been knocked out, while gene expression is almost completely abolished. Here we test the same receptor mutant plants for their gravitropic and phototropic responsiveness, generally considered to base on auxin gradients across the hypocotyl.
authors.affiliation: Biozentrum Flottbek der Universität, Hamburg, Germany.
authors.forename: Benjamin
authors.initials: B
authors.lastname: Möller
authors.affiliation: Biozentrum Flottbek der Universität, Hamburg, Germany.
authors.forename: Daniel
authors.initials: D
authors.lastname: Schenck
authors.affiliation: Biozentrum Flottbek der Universität, Hamburg, Germany.
authors.forename: Hartwig
authors.initials: H
authors.lastname: Lüthen
mesh_terms: D017360:Arabidopsis / Q000166:cytology* / Q000502:physiology*; D049109:Cell Proliferation; D018522:Gravitropism; D018546:Hypocotyl / Q000166:cytology* / Q000502:physiology; D007210:Indoleacetic Acids / Q000378:metabolism*; D009154:Mutation / Q000235:genetics; D009928:Organ Specificity; D018524:Phototropism; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism*; D011956:Receptors, Cell Surface / Q000235:genetics / Q000378:metabolism*; D013997:Time Factors; D018523:Tropism
chemical_list: D007210:Indoleacetic Acids; D010940:Plant Proteins; D011956:Receptors, Cell Surface; C046131:auxin receptor, plant