title: The Aux/IAA, Sl-IAA17 regulates quality parameters over tomato fruit development.
abstract: Auxin is known to be involved in all the stages of fruit development. Aux/IAAs are regulators of the auxin signaling at the transcription level. In a recent study, using RNAi strategy to limit the expression Sl-IAA17, it was shown that this tomato AuxIAA regulates fruit size mainly through altering the ploidy level of pericarp cells. Indeed, Sl-IAA17 down-regulated lines showed fruit with larger diameter, bigger volume and heavier weight than wild-type. The increase in fruit size was associated with thicker pericarp rather than larger locular spaces. The thicker pericarp was linked to larger cells harboring higher ploidy level, probably due to more active endoreduplication at the beginning of fruit development. The present report describes some additional phenotypes, not described in the initial article, among which are soluble solid content, juice pH, firmness, seed weight and fruit morphology.
authors: a Génomique et Biotechnologie des Fruits, Université de Toulouse , INP-ENSA Toulouse ; Toulouse , France.|b Génomique et Biotechnologie des Fruits , INRA ; Castanet-Tolosan , France.|c School of Biological and Environmental Engineering, Xi'an University of Arts and Science ; Xi'an , China.
authors: L Y
authors: LY
authors: Su
authors: a Génomique et Biotechnologie des Fruits, Université de Toulouse , INP-ENSA Toulouse ; Toulouse , France.|b Génomique et Biotechnologie des Fruits , INRA ; Castanet-Tolosan , France.
authors: C
authors: C
authors: Audran
authors: a Génomique et Biotechnologie des Fruits, Université de Toulouse , INP-ENSA Toulouse ; Toulouse , France.|b Génomique et Biotechnologie des Fruits , INRA ; Castanet-Tolosan , France.
authors: M
authors: M
authors: Bouzayen
authors: a Génomique et Biotechnologie des Fruits, Université de Toulouse , INP-ENSA Toulouse ; Toulouse , France.|b Génomique et Biotechnologie des Fruits , INRA ; Castanet-Tolosan , France.
authors: J P
authors: JP
authors: Roustan
authors: a Génomique et Biotechnologie des Fruits, Université de Toulouse , INP-ENSA Toulouse ; Toulouse , France.|b Génomique et Biotechnologie des Fruits , INRA ; Castanet-Tolosan , France.
authors: C
authors: C
authors: Chervin
mesh_terms: D005030:Ethylenes / Q000096:biosynthesis; D005638:Fruit / Q000254:growth & development* / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D007210:Indoleacetic Acids / Q000378:metabolism*; D018551:Solanum lycopersicum / Q000254:growth & development* / Q000378:metabolism*; D010940:Plant Proteins / Q000378:metabolism*; D034622:RNA Interference
chemical_list: D005030:Ethylenes; D007210:Indoleacetic Acids; D010940:Plant Proteins; C036216:ethylene
keywords: auxin; brix; fruit; morphometry; seed; signaling; tomato