title: (12)C/(13)C fractionations in plant primary metabolism.
abstract: Natural (13)C abundance is now an unavoidable tool to study ecosystem and plant carbon economies. A growing number of studies take advantage of isotopic fractionation between carbon pools or (13)C abundance in respiratory CO(2) to examine the carbon source of respiration, plant biomass production or organic matter sequestration in soils. (12)C/(13)C isotope effects associated with plant metabolism are thus essential to understand natural isotopic signals. However, isotope effects of enzymes do not influence metabolites separately, but combine to yield a (12)C/(13)C isotopologue redistribution orchestrated by metabolic flux patterns. In this review, we summarise key metabolic isotope effects and integrate them into the corpus of plant primary carbon metabolism.
authors.affiliation: Institut de Biologie des Plantes, CNRS UMR 8618, Université Paris-Sud 11, 91405 Orsay cedex, France.
authors.forename: Guillaume
authors.initials: G
authors.lastname: Tcherkez
authors.forename: Aline
authors.initials: A
authors.lastname: Mahé
authors.forename: Michael
authors.initials: M
authors.lastname: Hodges
mesh_terms: D002244:Carbon / Q000378:metabolism*; D057486:Carbon Cycle; D002245:Carbon Dioxide / Q000378:metabolism; D002247:Carbon Isotopes / Q000378:metabolism; D019069:Cell Respiration; D002952:Citric Acid Cycle; D006019:Glycolysis; D010427:Pentose Phosphate Pathway; D010788:Photosynthesis; D063245:Plant Development; D018515:Plant Leaves / Q000378:metabolism; D010940:Plant Proteins / Q000378:metabolism; D010944:Plants / Q000378:metabolism*; D012273:Ribulose-Bisphosphate Carboxylase / Q000378:metabolism; D013395:Sucrose / Q000378:metabolism
chemical_list: D002247:Carbon Isotopes; D010940:Plant Proteins; D002245:Carbon Dioxide; D013395:Sucrose; D002244:Carbon; D012273:Ribulose-Bisphosphate Carboxylase