The occurrence of phosphoenolpyruvate carboxykinase (PEPCK) and enzymes related to photosynthesis and organic acid/nitrogen metabolism in apricot flowers (Prunus armeniaca L.)

The occurrence of phosphoenolpyruvate carboxykinase (PEPCK) and enzymes related to photosynthesis... This study determined the occurrence of phosphoenolpyruvate carboxykinase (PEPCK) and some enzymes involved in photosynthesis and organic acid/nitrogen metabolism in the different parts of apricot flowers and some other tissues of apricot. Both PEPCK protein and activity were detected in the petal, carpel, stamen filament and in the flesh of both unripe and ripe fruits, but not in the sepal or mature leaf. Both PEPCK polypeptide and activity were most abundant in the flesh of ripe fruits. In floral tissues the photosynthetic enzymes ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) and putative plastidic glutamine synthase and plastidic aldolase were most abundant in the sepal in which PEPCK was not detected. The potential functions of PEPCK in the different tissues of apricot are discussed. This study highlights the potential importance of gluconeogenesis in floral metabolism. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta Physiologiae Plantarum Springer Journals

The occurrence of phosphoenolpyruvate carboxykinase (PEPCK) and enzymes related to photosynthesis and organic acid/nitrogen metabolism in apricot flowers (Prunus armeniaca L.)

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/lp/springer_journal/the-occurrence-of-phosphoenolpyruvate-carboxykinase-pepck-and-enzymes-NpvNIPYMad
Publisher
Springer Journals
Copyright
Copyright © 2017 by Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Kraków
Subject
Life Sciences; Plant Physiology; Plant Genetics and Genomics; Plant Biochemistry; Plant Pathology; Plant Anatomy/Development; Agriculture
ISSN
0137-5881
eISSN
1861-1664
D.O.I.
10.1007/s11738-017-2557-8
Publisher site
See Article on Publisher Site

Abstract

This study determined the occurrence of phosphoenolpyruvate carboxykinase (PEPCK) and some enzymes involved in photosynthesis and organic acid/nitrogen metabolism in the different parts of apricot flowers and some other tissues of apricot. Both PEPCK protein and activity were detected in the petal, carpel, stamen filament and in the flesh of both unripe and ripe fruits, but not in the sepal or mature leaf. Both PEPCK polypeptide and activity were most abundant in the flesh of ripe fruits. In floral tissues the photosynthetic enzymes ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) and putative plastidic glutamine synthase and plastidic aldolase were most abundant in the sepal in which PEPCK was not detected. The potential functions of PEPCK in the different tissues of apricot are discussed. This study highlights the potential importance of gluconeogenesis in floral metabolism.

Journal

Acta Physiologiae PlantarumSpringer Journals

Published: Oct 26, 2017

References

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