Your browser doesn't support javascript.
loading
Trehalose 6-phosphate promotes seed filling by activating auxin biosynthesis.
Meitzel, Tobias; Radchuk, Ruslana; McAdam, Erin L; Thormählen, Ina; Feil, Regina; Munz, Eberhard; Hilo, Alexander; Geigenberger, Peter; Ross, John J; Lunn, John E; Borisjuk, Ljudmilla.
Afiliación
  • Meitzel T; Leibniz Institute of Plant Genetics and Crop Plant Research, Corrensstr. 3, Stadt Seeland OT Gatersleben, 06466, Germany.
  • Radchuk R; Leibniz Institute of Plant Genetics and Crop Plant Research, Corrensstr. 3, Stadt Seeland OT Gatersleben, 06466, Germany.
  • McAdam EL; DeepTrait S.A., Dobrzanskiego 3, Lublin, 20-262, Poland.
  • Thormählen I; School of Natural Sciences, University of Tasmania, Sandy Bay, 7001, Australia.
  • Feil R; Faculty of Biology, Ludwig Maximilians University of Munich, Großhaderner Str. 2, Planegg-Martinsried, 82152, Germany.
  • Munz E; Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, Potsdam, 14476, Germany.
  • Hilo A; Leibniz Institute of Plant Genetics and Crop Plant Research, Corrensstr. 3, Stadt Seeland OT Gatersleben, 06466, Germany.
  • Geigenberger P; Leibniz Institute of Plant Genetics and Crop Plant Research, Corrensstr. 3, Stadt Seeland OT Gatersleben, 06466, Germany.
  • Ross JJ; Faculty of Biology, Ludwig Maximilians University of Munich, Großhaderner Str. 2, Planegg-Martinsried, 82152, Germany.
  • Lunn JE; School of Natural Sciences, University of Tasmania, Sandy Bay, 7001, Australia.
  • Borisjuk L; Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, Potsdam, 14476, Germany.
New Phytol ; 229(3): 1553-1565, 2021 02.
Article en En | MEDLINE | ID: mdl-32984971
Plants undergo several developmental transitions during their life cycle. One of these, the differentiation of the young embryo from a meristem-like structure into a highly specialized storage organ, is believed to be controlled by local connections between sugars and hormonal response systems. However, we know little about the regulatory networks underpinning the sugar-hormone interactions in developing seeds. By modulating the trehalose 6-phosphate (T6P) content in growing embryos of garden pea (Pisum sativum), we investigate here the role of this signaling sugar during the seed-filling process. Seeds deficient in T6P are compromised in size and starch production, resembling the wrinkled seeds studied by Gregor Mendel. We show also that T6P exerts these effects by stimulating the biosynthesis of the pivotal plant hormone, auxin. We found that T6P promotes the expression of the auxin biosynthesis gene TRYPTOPHAN AMINOTRANSFERASE RELATED2 (TAR2), and the resulting effect on auxin concentrations is required to mediate the T6P-induced activation of storage processes. Our results suggest that auxin acts downstream of T6P to facilitate seed filling, thereby providing a salient example of how a metabolic signal governs the hormonal control of an integral phase transition in a crop plant.
Asunto(s)
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fosfatos de Azúcar / Trehalosa Idioma: En Revista: New Phytol Asunto de la revista: BOTANICA Año: 2021 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fosfatos de Azúcar / Trehalosa Idioma: En Revista: New Phytol Asunto de la revista: BOTANICA Año: 2021 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Reino Unido