title: The polycotyledon (pct1-2) mutant of tomato shows enhanced accumulation of PIN1 auxin transport facilitator protein.
abstract: The bilateral symmetry of a dicotyledon embryo is tightly associated with the directional flow of auxin. Disruption of polar auxin flow results in various developmental abnormalities. The pct1-2 mutant of tomato, showing polycotyledony, also has enhanced polar auxin transport in hypocotyls. Immunocytochemical analysis revealed increased PIN1 protein in pct1-2 roots and hypocotyls. The mutant also displayed an increase in PIN1 transcript levels in these organs. Our results indicate that over-accumulation of PIN1 protein is likely related to increased polar transport of auxin in the pct1-2 mutant.
authors.affiliation: School of Life Sciences, University of Hyderabad, Hyderabad, India.
authors.forename: E V
authors.initials: EV
authors.lastname: Kharshiing
authors.forename: G P
authors.initials: GP
authors.lastname: Kumar
authors.forename: F A
authors.initials: FA
authors.lastname: Ditengou
authors.forename: X
authors.initials: X
authors.lastname: Li
authors.forename: K
authors.initials: K
authors.lastname: Palme
authors.forename: R
authors.initials: R
authors.lastname: Sharma
mesh_terms: D018506:Gene Expression Regulation, Plant; D018546:Hypocotyl / Q000378:metabolism; D007210:Indoleacetic Acids / Q000378:metabolism*; D018551:Solanum lycopersicum / Q000235:genetics* / Q000378:metabolism; D026901:Membrane Transport Proteins / Q000235:genetics / Q000378:metabolism*; D009154:Mutation; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism*; D018517:Plant Roots / Q000378:metabolism; D021381:Protein Transport
chemical_list: D007210:Indoleacetic Acids; D026901:Membrane Transport Proteins; D010940:Plant Proteins