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Carbon Isotope - Europe PMC

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Last Updated: 10 September 2022

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Mapping and confirmation of quantitative trait loci (QTLs) associated with carbon isotope ratio (δ13C) in soybean

Due to the plant's high genetic variation, high heritability, and small genotype u00d7 environment interactions, the Carbon isotope ratio provides an integrated measure of water use efficiency in Cu2083 plants. U2018KS4895u2019 and u2019Jackson are both a cross. The aim of this research was to identify quantitative trait loci linked to u03b4 u00b3C'u00b9, u00b3C and a recombinant inbred line population derived from a cross between a cross between u2018KS4895u2019 and u2019Jackson is u2019. u2019Jackson Genome, climate, and G u00d7 E interactions were found by a statistical variance of u03b4u00b3C averaged over water and irrigation treatment, which had major effects on genotype, soil, and irrigation treatment. A total of 24 QTLs associated with u03b4u00b9u00b3C were identified and clustered in nine genomic regions on seven chromosomes, grouped in nine genomic regions on seven chromosomes. Several identified u03b4/4u00b9b9u00b9u00b9u00b3C QTLs correlated with other physiological characteristics such as plant water status, biological nitrogen fixation, and plant morphology. The identified genomic regions may be a vital component in genomic research studies to increase drought tolerance in soybeans.

Source link: https://europepmc.org/article/MED/IND607867274


Position-specific carbon isotope analysis of serine by gas chromatography/Orbitrap mass spectrometry, and an application to plant metabolism.

Here we introduce an Orbitrap device that was developed for the position-specific carbon isotope testing of serine to test our hypothesis and explore the generalizability of this technique to other amino acids. Methods of Measurement Methods With a Thermo Scientific Q Exactive & Orbitrapu2122. The 13 C/ 12 C ratios of fragments with monoisotopic masses of 110. 0217, 138. 0166, and 165. 0037 Da were measured in a mass analyzer and used to determine location-specific u03b4 13 C values relative to a working average. The u3b4 13 C values of fragment ions of serine were found to be characterized with u226414. 1u2030 precision, leading to standard deviations of 0. 7-50% for each carbon position. Up to ca 28 u00b1 5u2030 between serine molecules hydrolyzed from plants grown under contrasting pCO 2, selected to encourage different fluxes by photosynthesis and photorespiration differed by up to ca 28 u00b1 5u2030.

Source link: https://europepmc.org/article/MED/35770334


Stable carbon and hydrogen isotope fractionation of volatile organic compounds caused by vapor-liquid equilibrium.

Several different types of laboratory experiments were conducted to determine isotope fractionation caused by the phase transfer process for a series of common environmental pollutants. During volatilization from water, the residual mass of aromatic compounds and MTBE dissolving in the water became increasingly rich in heavy hydrogen isotopes, although no significant change was observed in carbon isotope, except for MTBE, which showed a significant decline. The sink matrix of this study indicates that the change in isotope ratios will be used to determine whether gas-phase VOCs are present in the soil air or when gas-phase VOCs are tested using TGDE as the sink matrix. The results of this research contribute to the growing list of common environmental pollutants that can be assessed by the compound-specific isotope analysis technique used in the context of gas-phase experiments.

Source link: https://europepmc.org/article/MED/36041532


Stable carbon isotope and n-alkane distributions in sediment cores from saline and freshwater Gabu lakes, Southeast Nigeria: Environmental implications

Organic matter sources and lake conditions have been well documented around the world. Nevertheless, lacustrine salt basins in southern Africa, particularly in tropical sub-saharan Africa, are less well understood. We quantified OM sources and determined the effects of salt deposit and barite mining on the dissemination of n-alkanes in saline and freshwater Gabu lakes sediment cores, Southeast N. . . . ia, using elemental, bulk carbon isotope ratios and biomarker distributions. The presence of salt stress was traced to a moderate abundance of C 17 and C 19 n -alkanes as well as the near-absence of other low molecular weight n -alkanes in the saline lake. LMW n -alkane absence in a freshwater lake was attributed to barite hydrolysis and acidification in conjunction with mining production.

Source link: https://europepmc.org/article/PPR/PPR532957

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions