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Glycerate uptake into mesophyll and bundle sheath chloroplasts of a c 4 plant panicum miliaceum



Glycerate uptake into mesophyll and bundle sheath chloroplasts of a c 4 plant panicum miliaceum



Journal of Plant Physiology 133(1): 119-121



Glycerate uptake into mesophyll and bundle sheath chloroplasts of C4 plant, Panicum miliaceum L. was compared. Although the glycerate metabolizing enzyme, glycerate kinase, was undetectable in bundle sheath chloroplasts, they showed a similar time course of light-enhanced glycerate uptake as mesophyll chloroplasts which contained significant kinase activity. The uptake in light was partially inhibited by glycolate and enhanced by preincubation of the chloroplasts with glycolate. These results suggest the existence of a glycolate/glycerate translocator in both types of C4 chloroplasts similar to that reported for C3 chloroplasts.

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Accession: 007380940

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DOI: 10.1016/s0176-1617(88)80097-x


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