Identification of the transporter responsible for sucrose accumulation in sugar beet taproots.

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autorinnen und Autoren: Jung B, Ludewig F, Schulz A, Meißner G, Wöstefeld N, Flügge UI, Pommerrenig B, Wirsching P, Sauer N, Koch W, Sommer F, Mühlhaus T, Schroda M, Cuin TA, Graus D, Marten I, Hedrich R, Neuhaus He
Zeitschrift: Nature plants
Jahr der Veröffentlichung: 2015
Band: 1
ISSN: 2055-0278
Sprache: Englisch


Abstract


Sugar beet provides around one third of the sugar consumed worldwide and serves as a significant source of bioenergy in the form of ethanol. Sucrose accounts for up to 18% of plant fresh weight in sugar beet. Most of the sucrose is concentrated in the taproot, where it accumulates in the vacuoles. Despite 30 years of intensive research, the transporter that facilitates taproot sucrose accumulation has escaped identification. Here, we combine proteomic analyses of the taproot vacuolar membrane, the tonoplast, with electrophysiological analyses to show that the transporter BvTST2.1 is responsible for vacuolar sucrose uptake in sugar beet taproots. We show that BvTST2.1 is a sucrose-specific transporter, and present evidence to suggest that it operates as a proton antiporter, coupling the import of sucrose into the vacuole to the export of protons. BvTST2.1 exhibits a high amino acid sequence similarity to members of the tonoplast monosaccharide transporter family in Arabidopsis, prompting us to rename this group of proteins 'tonoplast sugar transporters'. The identification of BvTST2.1 could help to increase sugar yields from sugar beet and other sugar-storing plants in future breeding programs.



FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Pommerrenig, Benjamin Dr.
Lehrstuhl für Molekulare Pflanzenphysiologie
Sauer, Norbert Prof. Dr.
Lehrstuhl für Molekulare Pflanzenphysiologie
Wirsching, Petra Dr.
Lehrstuhl für Molekulare Pflanzenphysiologie


Einrichtungen weiterer Autorinnen und Autoren

Julius-Maximilians-Universität Würzburg
KWS SAAT SE
Technische Universität Kaiserslautern
Universität Köln


Zitierweisen

APA:
Jung, B., Ludewig, F., Schulz, A., Meißner, G., Wöstefeld, N., Flügge, U.-I.,... Neuhaus, H.e. (2015). Identification of the transporter responsible for sucrose accumulation in sugar beet taproots. Nature plants, 1. https://dx.doi.org/10.1038/nplants.2014.1

MLA:
Jung, Benjamin, et al. "Identification of the transporter responsible for sucrose accumulation in sugar beet taproots." Nature plants 1 (2015).

BibTeX: 

Zuletzt aktualisiert 2018-06-08 um 17:39