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Starch Synthase 4 and Plastidal Phosphorylase Differentially Affect Starch Granule Number and Morphology.

Plant physiology - 1 May 2017

Malinova Irina, Alseekh Saleh, Feil Regina, Fernie Alisdair R, Baumann Otto, Schöttler Mark Aurel, Lunn John E, Fettke Joerg

Abstract excerpt

The process of starch granule formation in leaves of Arabidopsis (Arabidopsis thaliana) is obscure. Besides STARCH SYNTHASE4 (SS4), the PLASTIDIAL PHOSPHORYLASE (PHS1) also seems to be involved, since dpe2-1/phs1a double mutants lacking both PHS1 and the cytosolic DISPROPORTIONATING ENZYME2 (DPE2) displayed only one starch granule per chloroplast under normal growth conditions. For further studies, a...

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PMID: 28275148
DOI: 10.1104/pp.16.01859
PMCID: PMC5411139

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