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Literature DB >> 24310140

Role of phloem in sucrose transport by Ricinus cotyledons.

Abstract

Sucrose is taken up and accumulated by cotyledons of Ricinus communis L. Autoradiographic studies reveal a predominant accumulation of sucrose in the phloem of the cotyledons. The export of sucrose from the cotyledons to hypocotyl and roots proceeds in the phloem by mass flow. These results, taken together with previous data, are experimental evidence for proton-sucrose symport as the mechanism of phloem loading.

Entities: Chemical Species

Year: 1980 PMID： 24310140 DOI： 10.1007/BF00388125

Source DB: PubMed Journal: Planta ISSN： 0032-0935 Impact factor: 4.116

16 in total

1. 3-O-Methyl glucose uptake stimulation by auxin and by fusicoccin in plant materials and its relationships with proton extrusion.

Authors: R Colombo; M I De Michelis; P Lado
Journal: Planta Date: 1978-01 Impact factor: 4.116

2. Sucrose and proton cotransport in Ricinus cotyledons : I. H(+) influx associated with sucrose uptake.

Authors: V M Hutchings
Journal: Planta Date: 1978-01 Impact factor: 4.116

3. Membrane potential changes during transport of hexoses in Lemna gibba G1.

Authors: A Novacky; C I Ullrich-Eberius; U Lüttge
Journal: Planta Date: 1978-01 Impact factor: 4.116

4. Lactose transport coupled to proton movements in Escherichia coli.

Authors: I C West
Journal: Biochem Biophys Res Commun Date: 1970-11-09 Impact factor: 3.575

5. Proton-coupled hexose transport in Chlorella vulgaris.

Authors: E Komor
Journal: FEBS Lett Date: 1973-12-15 Impact factor: 4.124

6. Evidence for Phloem loading from the apoplast: chemical modification of membrane sulfhydryl groups.

Authors: R Giaquinta
Journal: Plant Physiol Date: 1976-06 Impact factor: 8.340

7. Sugar Selectivity and Other Characteristics of Phloem Loading in Beta vulgaris L.

Authors: B R Fondy; D R Geiger
Journal: Plant Physiol Date: 1977-05 Impact factor: 8.340

8. Depolarization of the plasma membrane of Neurospora during active transport of glucose: evidence for a proton-dependent cotransport system.

Authors: C L Slayman; C W Slayman
Journal: Proc Natl Acad Sci U S A Date: 1974-05 Impact factor: 11.205

9. Sucrose uptake by cotyledons of Ricinus communis L.: Characteristics, mechanism, and regulation.

Authors: E Komor
Journal: Planta Date: 1977-01 Impact factor: 4.116

10. The influence of externally supplied sucrose on phloem transport in the maize leaf strip.

Authors: W Heyser; R Heyser; W Eschrich; E Fritz
Journal: Planta Date: 1977-01 Impact factor: 4.116

5 in total

1. Changes in the expression pattern of the plasma membrane H+-ATPase in developing Ricinus communis cotyledons undergoing the sink/source transition.

Authors: Lorraine E Williams; Amanda Gregory
Journal: Planta Date: 2003-12-06 Impact factor: 4.116