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1 Ιαν 1981 · Our models for isotope fractionation in plants are based on the cumulative fractionations associated with various individual steps (such as stomatal diffusion, C02-HCO3 equilibration, carboxylation, etc.).
- Carbon Isotope Fractionation in Plants
The carbon and hydrogen isotope compositions (δ 13 C and δ 2...
- Cyanide-induced Transition From Endogenous Carbohydrate to Lipid Oxidation as Indicated by The Carbon-13 Content of Respiratory Co2
These corrections are based on the percent inhibition by...
- Carbon Isotope Discrimination in a Plant Possessing The C4 Dicar Ylic Acid Pathway
The δ 13 C values for the major plant constituents and some...
- Geochemical Implications of Induced Changes in C13 Fractionation by Blue-Green Algae
The photosynthetic fractionation of carbon isotopes by...
- Carbon Isotope Relationships Between Plankton and Sea Water
The difference in the <5C13 between the carbon dioxide and...
- Maximum Carbon Isotope Fractionation in Photosynthesis by Blue-Green Algae and a Green Alga
The maximum carbon isotope fractionation occurring in...
- The Measuring Procedure and Corrections for The High-Precision Mass-Spectrometric Analysis of Isotopic Abundance Ratios, Especially Referring to Carbon, Oxygen and Nitrogen
In order to determine isotopic abundance ratios such as 13...
- Calculation of Permeability Coefficient
Flow equations are developed using Laplace transform theory...
- Carbon Isotope Fractionation in Plants
During photosynthetic CO2 fixation fractionation of stable carbon isotopes occurs and, consequently, plants are generally depleted in the heavier isotope 13C. Carbon isotope discrimination (Δ) is a measure of this process and depends on fractionation during...
21 Φεβ 2018 · The present chapter summarizes available data on plant respiratory fractionation, and presents a critical discussion about the metabolic origin of its variation, in the light of recent developments in understanding the compartmentation and plasticity of plant respiration.
Isotopic fractionation differs between C4 carbon fixation and C3, due to the spatial separation in C4 plants of CO 2 capture (in the mesophyll cells) and the Calvin cycle (in the bundle sheath cells).
The fractionation of carbon isotopes during photosynthesis involves several distinct biochemical and physical processes that share control of CO 2 uptake.
metabolic fractionation of carbon is occurring in plants, it should be possible to find chemical materials within the plant which differ in C13/12 ratio. This 'paper reports the results of a search for a C12 enriched plant fraction which might give rise to petroleum hy-drocarbons. MATERIALS AND METHODS PREPARATION OF LIPID FRACTION: The whole
fractionation in plants The principal factor affecting the iso-topic compositions of leaves is the isotope fractionation accompanying CO2 uptake. Following initial sugges-tions of Craig (1953), Smith and Ep-stein (1971), and others (O'Leary 1981), models for plant isotope frac-tionation have focused on the physi-cal and chemical processes accompa-
