Revised phosphate–water fractionation equation reassessing paleotemperatures derived from biogenic apatite

Pucéat, Emmanuelle; Joachimski, Michael M.; Bouilloux, A.; Monna, Fabrice; Bonin, Aurélie; Motreuil, Sébastien; Morinière, P; Hénard, S.; Mourin, J.; Dera, Guillaume; Quesne, Didier

doi:10.1016/j.epsl.2010.07.034

Cited by 200 publications

(133 citation statements)

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“…In contrast to previous studies reporting direct measurement of intracellular water from only one microbial strain, E. coli (27,36), we tested several different strains of bacteria to look for species-/strain-specific effects and also used the technique of multilabeled water isotope probing (MLWIP), used in previous studies of metabolic water in rats (30) and further developed in our group to probe organophosphorus and phosphoenzyme reaction mechanisms (23,(42)(43)(44). Using this technique, multiple (three or more) labeled-water probes having different oxygen isotopic composition are used to interrogate reaction mechanisms and trace oxygen transfers between compounds in reactions.…”

Section: Intracellular Water Isotopic Compositionmentioning

confidence: 99%

“…Water 18 O: 16 O ratios (henceforth expressed as δ 18 O WATER values) also vary due to the exchange or replacement of oxygen atoms (i.e., isotopes) in water with oxygen in other molecules. In the case of exchange of oxygen between water and the oxyanions that are precipitated within/by cells as biominerals (e.g., CO 3 2− , PO 4 3− , and SO 4 2− ), 18 O: 16 O ratios often vary according to temperature, which has led to construction of a number a of oxyanion−water−temperature equations or "paleothermometers" that are widely used in the study of Earth's climate (21,23,(39)(40)(41). A primary assumption underlying the use of these oxygen isotope paleothermometers to reconstruct environmental temperatures is that oxyanion 18 O: 16 O ratios reflect equilibrium exchange with ambient environmental water that is further assumed to be identical in oxygen isotopic composition to the intracellular water.…”

Section: Intracellular Water Isotopic Compositionmentioning

confidence: 99%

“…This technique contrasts with traditional isotope probing methods that typically use only a single probing compound that is usually strongly labeled with one (or more) heavy or even radioactive isotope(s). Importantly, MLWIP methods use both heavy and light isotopic probes that also have isotopic compositions close to natural abundances to provide both higher sensitivity and additional insights into the reaction mechanism, such as the fractionation involved during isotope exchange and transfer/replacement reactions (23,29,30,42,44). Here we used the MLWIP method, combined with graphical analysis, to both identify a metabolic water component in the intracellular water pool and to confirm the transfer of the oxygen isotopic signature of intracellular water to phosphate (PO 4 ) in DNA and cellular biomass.…”

Section: Intracellular Water Isotopic Compositionmentioning

confidence: 99%

“…A core assumption of applications of biomineral oxygen isotopic compositions to infer environmental conditions is that the 18 O: 16 O ratio is controlled by exchange of oxygen isotopes between oxyanions comprising the biomineral and ambient water in bodily fluids (i.e., body water) (9,(20)(21)(22)(23)(24). In multicellular eukaryotic organisms, body water includes all water found in various body compartments (e.g., intravascular/intercellular) and bodily fluids (e.g., blood plasma, urine, breath vapor), including water produced by metabolism, and is averaged over the entire organism (25,26).…”

mentioning

confidence: 99%

“…In recent years, interest in metabolic water has been extended to its oxygen isotopic composition ( 18 O/ 16 O ratio or δ 18 O value) and contribution to body water because this information is crucial to the interpretation of biomineral [e.g., carbonate-CaCO 3 -and phosphate-Ca 3 (PO 4 ) 2 ] oxygen isotopic compositions used heavily in paleoclimate/paleohydrological research (7)(8)(9)(10)(11)(12)(13)(14). This includes biomineral shells of aquatic marine organisms that are preserved in the geologic record and used to infer Earth's climate history (15)(16)(17)(18)(19).A core assumption of applications of biomineral oxygen isotopic compositions to infer environmental conditions is that the 18 O: 16 O ratio is controlled by exchange of oxygen isotopes between oxyanions comprising the biomineral and ambient water in bodily fluids (i.e., body water) (9,(20)(21)(22)(23)(24). In multicellular eukaryotic organisms, body water includes all water found in various body compartments (e.g., intravascular/intercellular) and bodily fluids (e.g., blood plasma, urine, breath vapor), including water produced by metabolism, and is averaged over the entire organism (25,26).…”

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confidence: 99%

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Probing the metabolic water contribution to intracellular water using oxygen isotope ratios of PO ₄

Wang

et al. 2016

Proc. Natl. Acad. Sci. U.S.A.

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Knowledge of the relative contributions of different water sources to intracellular fluids and body water is important for many fields of study, ranging from animal physiology to paleoclimate. The intracellular fluid environment of cells is challenging to study due to the difficulties of accessing and sampling the contents of intact cells. Previous studies of multicelled organisms, mostly mammals, have estimated body water composition-including metabolic water produced as a byproduct of metabolism-based on indirect measurements of fluids averaged over the whole organism (e.g., blood) combined with modeling calculations. In microbial cells and aquatic organisms, metabolic water is not generally considered to be a significant component of intracellular water, due to the assumed unimpeded diffusion of water across cell membranes. Here we show that the 18 O/ 16 O ratio of PO 4 in intracellular biomolecules (e.g., DNA) directly reflects the O isotopic composition of intracellular water and thus may serve as a probe allowing direct sampling of the intracellular environment. We present two independent lines of evidence showing a significant contribution of metabolic water to the intracellular water of three environmentally diverse strains of bacteria. Our results indicate that ∼30-40% of O in PO 4 comprising DNA/biomass in early stationary phase cells is derived from metabolic water, which bolsters previous results and also further suggests a constant metabolic water value for cells grown under similar conditions. These results suggest that previous studies assuming identical isotopic compositions for intracellular/extracellular water may need to be reconsidered. metabolic water | isotope probing | phosphate oxygen isotopes M etabolic water, more precisely defined as an isotopically distinct flux of O (and H) produced during metabolism (1), has been studied extensively as an alternative water source contributing to body water in animals, such as desert mammals, insects, and migrating birds (2-6), but does not easily lend itself to direct measurement. In recent years, interest in metabolic water has been extended to its oxygen isotopic composition ( 18 O/ 16 O ratio or δ 18 O value) and contribution to body water because this information is crucial to the interpretation of biomineral [e.g., carbonate-CaCO 3 -and phosphate-Ca 3 (PO 4 ) 2 ] oxygen isotopic compositions used heavily in paleoclimate/paleohydrological research (7)(8)(9)(10)(11)(12)(13)(14). This includes biomineral shells of aquatic marine organisms that are preserved in the geologic record and used to infer Earth's climate history (15)(16)(17)(18)(19).A core assumption of applications of biomineral oxygen isotopic compositions to infer environmental conditions is that the 18 O: 16 O ratio is controlled by exchange of oxygen isotopes between oxyanions comprising the biomineral and ambient water in bodily fluids (i.e., body water) (9,(20)(21)(22)(23)(24). In multicellular eukaryotic organisms, body water includes all water found in various body compartments (...

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Section: Intracellular Water Isotopic Compositionmentioning

confidence: 99%

Section: Intracellular Water Isotopic Compositionmentioning

confidence: 99%

Section: Intracellular Water Isotopic Compositionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Probing the metabolic water contribution to intracellular water using oxygen isotope ratios of PO ₄

Wang

et al. 2016

Proc. Natl. Acad. Sci. U.S.A.

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Late Cretaceous climate simulations with different CO₂ levels and subarctic gateway configurations: A model‐data comparison

et al. 2017

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We investigate the impact of different CO2 levels and different subarctic gateway configurations on the surface temperatures during the latest Cretaceous using the Earth System Model COSMOS. The simulated temperatures are compared with the surface temperature reconstructions based on a recent compilation of the latest Cretaceous proxies. In our numerical experiments, the CO2 level ranges from 1 to 6 times the preindustrial (PI) CO2 level of 280 ppm. On a global scale, the most reasonable match between modeling and proxy data is obtained for the experiments with 3 to 5 × PI CO2 concentrations. However, the simulated low‐ (high‐) latitude temperatures are too high (low) as compared to the proxy data. The moderate CO2 levels scenarios might be more realistic, if we take into account proxy data and the dead zone effect criterion. Furthermore, we test if the model‐data discrepancies can be caused by too simplistic proxy‐data interpretations. This is distinctly seen at high latitudes, where most proxies are biased toward summer temperatures. Additional sensitivity experiments with different ocean gateway configurations and constant CO2 level indicate only minor surface temperatures changes (<~1°C) on a global scale, with higher values (up to ~8°C) on a regional scale. These findings imply that modeled and reconstructed temperature gradients are to a large degree only qualitatively comparable, providing challenges for the interpretation of proxy data and/or model sensitivity. With respect to the latter, our results suggest that an assessment of greenhouse worlds is best constrained by temperatures in the midlatitudes.

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Mobility, mortality, and the middle ages: Identification of migrant individuals in a 14th century black death cemetery population

Kendall

Montgomery

Evans

et al. 2012

American J Phys Anthropol

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(2013) 'Mobility, mortality, and the middle ages : identication of migrant individuals in a 14th century black death cemetery population.', American journal of physical anthropology., 150 (2). pp. 210-222. Further information on publisher's website:http://dx.doi.org/10.1002/ajpa.22194 Publisher's copyright statement: This is the accepted version of the following article: Kendall, E.J., Montgomery, J., Evans, J.A., Stantis, C. and Mueller, V. (2013), Mobility, mortality, and the middle ages: Identication of migrant individuals in a 14th century black death cemetery population. American Journal of Physical Anthropology, 150 (2): 210-222, which has been published in nal form at http://dx.doi.org/10.1002/ajpa.22194. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. ABSTRACT Mobility and migration patterns of groups and individuals have long been a topic of interest to archaeologists, used for broad explanatory models of cultural change as well as illustrations of historical particularism. The 14th century AD was a tumultuous period of history in Britain, with severely erratic weather patterns, the Great Famine of 1315-1322, the Scottish Wars of Independence, and the Hundred Years' War providing additional migration pressures to the ordinary economic issues drawing individuals to their capital under more stable conditions. East Smithfield Black Death Cemetery (Royal Mint) had a documented use period of only 2 years (AD 1348(AD -1350, providing a precise historical context (~50 years) for data. Adults (n = 30) from the East Smithfield site were sampled for strontium and oxygen stable isotope analyses of tooth enamel. Five individuals were demonstrated to be statistical outliers through the combined strontium and oxygen isotope data. Potential origins for migrants ranged from London's surrounding hinterlands to distant portions of northern and western Britain. Historic food sourcing practices for London were found to be an important factor for consideration in a broader than expected 8 7 S r / 8 6 S r range reflected in a comparison of enamel samples from three London datasets. The pooled dataset demonstrated a high level of consistency between site data, divergent from the geologically predicted range. We argue that this supports the premise that isotope data in human populations must be approached as a complex interaction between behavior and environment and thus should be interpre...

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Revised phosphate–water fractionation equation reassessing paleotemperatures derived from biogenic apatite

Cited by 200 publications

References 25 publications

Probing the metabolic water contribution to intracellular water using oxygen isotope ratios of PO ₄

Probing the metabolic water contribution to intracellular water using oxygen isotope ratios of PO ₄

Late Cretaceous climate simulations with different CO₂ levels and subarctic gateway configurations: A model‐data comparison

Mobility, mortality, and the middle ages: Identification of migrant individuals in a 14th century black death cemetery population

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Revised phosphate–water fractionation equation reassessing paleotemperatures derived from biogenic apatite

Cited by 200 publications

References 25 publications

Probing the metabolic water contribution to intracellular water using oxygen isotope ratios of PO 4

Probing the metabolic water contribution to intracellular water using oxygen isotope ratios of PO 4

Late Cretaceous climate simulations with different CO2 levels and subarctic gateway configurations: A model‐data comparison

Mobility, mortality, and the middle ages: Identification of migrant individuals in a 14th century black death cemetery population

Contact Info

Product

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Probing the metabolic water contribution to intracellular water using oxygen isotope ratios of PO ₄

Probing the metabolic water contribution to intracellular water using oxygen isotope ratios of PO ₄

Late Cretaceous climate simulations with different CO₂ levels and subarctic gateway configurations: A model‐data comparison