Chinese Bulletin of Botany ›› 2013, Vol. 48 ›› Issue (3): 320-328.DOI: 10.3724/SP.J.1259.2013.00320

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Research Progress in Plant Phosphoenolpyruvate Carboxykinase

Xiumei Dong1, Qing Chao2, Baichen Wang1,2*   

  1. 1Tree Genomics, School of Forestry, Northeast Forestry University, Harbin 150040, China;

    2Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
  • Received:2012-12-03 Revised:2013-03-14 Online:2013-05-01 Published:2013-06-21
  • Contact: Baichen Wang

Abstract: Phosphoenolpyruvate carboxykinase (PEPCK) is ubiquitous in flowering plants but present in only certain tissues and cells. It is highly regulated by phosphorylation (which can be regulated by light) and metabolites. In plants, ATP-dependent PEPCK often generates PEP, which plays roles in many biological processes. PEPCK may be involved in these processes indirectly, including gluconeogenesis after germination of triglyceride-storing seeds and fruit ripening; photosynthetic CO2-concentrating mechanisms of C4 and crassulacean acid metabolism plants; cellular pH homeostasis; and nitrogen metabolism. This paper reviews the regulation of PEPCK activity in plants and its physiological functions.