Abstract
Respiration of illuminated leaves (day respiration) represents a minor carbon flux as compared to photosynthesis and photorespiration under usual gaseous conditions. However, it is crucial for leaf primary metabolism, since it sustains N assimilation and provides ATP that can be used for sucrose synthesis in the light. Although available data on interactions between photosynthesis, photorespiration, respiration, and nutrient assimilation are still rather limited, recent works taking advantage of isotopic labeling and metabolomics suggest that changes in photosynthetic and photorespiratory conditions (or the carboxylation-to-oxygenation ratio, v c /v o ) influence N assimilation, S incorporation into methionine, and possibly, displace the equilibrium between C1-metabolites. The crossroad of all of these pathways is mitochondrial metabolism. Therefore, day respiration is probably of considerable importance not only for nutrient assimilation but also for cellular metabolic coordination. This view agrees with data obtained in respiratory mutants.
Original language | English |
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Title of host publication | Plant Respiration: Metabolic Fluxes and Carbon Balance |
Editors | Guillaume Tcherkez and Jaleh Ghashghaie |
Place of Publication | Switzerland |
Publisher | Springer International Publishing AG |
Pages | 1-18 |
Volume | 43 |
ISBN (Print) | 978-3-319-68701-8 |
DOIs | |
Publication status | Published - 2017 |