Role of phloem in sucrose transport by Ricinus cotyledons

descriptionPublicationkeyboard_double_arrow_right Article 01 Apr 1980 English Publisher:Springer Science and Business Media LLCJournal:Planta, volume 148, pages 367-373 (issn: 0032-0935, eissn: 1432-2048,

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Authors: E, Martin; E, Komor;

doi: 10.1007/bf00388125

pmid: 24310140

Role of phloem in sucrose transport by Ricinus cotyledons

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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.

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