Compound‐specific differences in 13C of soluble carbohydrates in leaves and phloem of 6‐month‐old Eucalyptus globulus (Labill)
作者： ANDREW MERCHANT , BIRGIT WILD , ANDREAS RICHTER , SIDONIE BELLOT , MARK A. ADAMS
DOI: 10.1111/J.1365-3040.2011.02359.X
关键词:
摘要: Movement of photoassimilates from leaves to phloem is an important step for the flux carbon through plants. Fractionation isotopes during this process may influence their abundance in heterotrophic tissues. We subjected Eucalyptus globulus 20, 25 and 28 °C ambient growth temperatures measured compound-specific δ13C carbohydrates obtained bled sap. compared sucrose raffinose leaf or total soluble carbon, with modelled values predicted by gas exchange. Changes either sap were more tightly coupled changes ci/ca than was carbon. At 28 °C, enriched 13C – irrespective tissue type. Phloem depleted extracts. Intermolecular tissue-specific reveal that multiple systematic factors composition export phloem. Predicting sensitivity these plant physiological status will improve our ability infer function at a range temporal spatial scales.
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