Perspectives for a better understanding of the metabolic integration of photorespiration within a complex plant primary metabolism network

J Exp Bot. 2016 May;67(10):3015-26. doi: 10.1093/jxb/erw145. Epub 2016 Apr 6.


Photorespiration is an essential high flux metabolic pathway that is found in all oxygen-producing photosynthetic organisms. It is often viewed as a closed metabolic repair pathway that serves to detoxify 2-phosphoglycolic acid and to recycle carbon to fuel the Calvin-Benson cycle. However, this view is too simplistic since the photorespiratory cycle is known to interact with several primary metabolic pathways, including photosynthesis, nitrate assimilation, amino acid metabolism, C1 metabolism and the Krebs (TCA) cycle. Here we will review recent advances in photorespiration research and discuss future priorities to better understand (i) the metabolic integration of the photorespiratory cycle within the complex network of plant primary metabolism and (ii) the importance of photorespiration in response to abiotic and biotic stresses.

Keywords: Biotic and abiotic stress; flux modeling; metabolic network; metabolic repair; photorespiration; regulation..

Publication types

  • Review
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Metabolic Networks and Pathways / physiology
  • Photosynthesis / physiology*
  • Plant Physiological Phenomena
  • Plants / enzymology
  • Plants / metabolism*