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An active sucrose carrier (Scr1) that is predominantly expressed in the seedling of Ricinus communis L.

Titelangaben

Weig, Alfons ; Komor, Ewald:
An active sucrose carrier (Scr1) that is predominantly expressed in the seedling of Ricinus communis L.
In: Journal of Plant Physiology. Bd. 147 (1996) Heft 6 . - S. 685-690.
ISSN 0176-1617
DOI: https://doi.org/10.1016/S0176-1617(11)81478-1

Abstract

During the germination of Ricinus communis seedlings sucrose is released from the endosperm and taken up by the cotyledons for their growth and for export to the rapidly growing hypocotyl and roots. Both the mesophyll cells and the phloem of castor bean possess active sucrose carriers. We isolated one of these carriers by heterologous screening with the spinach sucrose carrier cDNA for further investigation of sucrose transport at the cellular level. The deduced peptide sequence of this sucrose carrier (Scr1) has 12 putative membrane spanning domains and shares homology with other transporters of the major facilitator superfamily (MFS). When expressed in Saccharomyces cerevisiae, Scr1 shows active sucrose transport that can be inhibited by PCMBS or CCCP. According to the pH-dependence the carrier seems related to SUC2 of Arabidopsis and Plantago, which are phloem-specific in these plants. It also shows a relatively high specificity for sucrose, compared with maltose or raffinose. Scr1 is expressed in equal amounts in all organs of a 6-day-old castor bean seedling and to a lesser extent in green sink and source leaves

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Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Zusätzliche Informationen: BAYCEER22518
BAYCEER122972
Keywords: research article; Ricinus; RcSCR1; sugar transport
Institutionen der Universität: Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Biologie > Lehrstuhl Pflanzenphysiologie
Forschungseinrichtungen > Forschungszentren > Bayreuther Zentrum für Ökologie und Umweltforschung - BayCEER
Forschungseinrichtungen
Forschungseinrichtungen > Forschungszentren
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik
500 Naturwissenschaften und Mathematik > 570 Biowissenschaften; Biologie
Eingestellt am: 21 Mai 2014 06:31
Letzte Änderung: 21 Dec 2015 10:55
URI: https://eref.uni-bayreuth.de/id/eprint/392