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Respiratory Effects on the Carbon IsotopeDiscrimination Near the Compensation Point

Barbour, Margaret M; Ryazanova, Svetlana; Tcherkez, Guillaume


The carbon isotope discrimination associated with net photosynthesis (Δobs) when photosynthetic rates are low, such as approaching the light and CO2 compensation points, has rarely been measured but may contain useful information on day respiration (Rd). In fact, at low assimilation rates, the relative importance of respiratory CO2 release is larger and its isotopic signal can be captured. In this chapter, we describe the measurement of Δobs in cocklebur, spinach and magnolia leaves at very low...[Show more]

CollectionsANU Research Publications
Date published: 2017
Type: Book chapter
Book Title: Plant Respiration: Metabolic Fluxes and Carbon Balance
DOI: 10.1007/978-3-319-68703-2_7


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