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. 1980 Mar;65(3):560-2.
doi: 10.1104/pp.65.3.560.

Translocation: EFFLUX OF SUGARS ACROSS THE PLASMALEMMA OF MESOPHYLL PROTOPLASTS

S C Huber  1 , D E Moreland
Affiliations

Translocation: EFFLUX OF SUGARS ACROSS THE PLASMALEMMA OF MESOPHYLL PROTOPLASTS

S C Huber et al. Plant Physiol. 1980 Mar.

Abstract

During photosynthesis by mesophyll protoplasts of wheat and tobacco, a linear efflux of sucrose and hexoses to the medium was observed, with the size of the intraprotoplast sugar pools remaining constant. Efflux of metabolites labeled by (14)CO(2) fixation was initially low because of dilution by internal pools, but increased exponentially with time. The results have significance both in terms of the mechanism of translocation and the use of isolated protoplasts in photosynthetic studies.

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