On the Effect of Planetary Stable Isotope Compositions on Growth and Survival of Terrestrial Organisms.

Isotopic compositions of reactants affect the rates of chemical and biochemical reactions. Usually it is assumed that heavy stable isotope enrichment leads to progressively slower reactions. Yet the effect of stable isotopes may be nonlinear, as exemplified by the "isotopic resonance" phen...

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Main Authors: Xueshu Xie, Roman A Zubarev
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2017-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC5215764?pdf=render
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author Xueshu Xie
Roman A Zubarev
author_facet Xueshu Xie
Roman A Zubarev
author_sort Xueshu Xie
collection DOAJ
description Isotopic compositions of reactants affect the rates of chemical and biochemical reactions. Usually it is assumed that heavy stable isotope enrichment leads to progressively slower reactions. Yet the effect of stable isotopes may be nonlinear, as exemplified by the "isotopic resonance" phenomenon. Since the isotopic compositions of other planets of Solar system, including Mars and Venus, are markedly different from terrestrial (e.g., deuterium content is ≈5 and ≈100 times higher, respectively), it is far from certain that terrestrial life will thrive in these isotopic conditions. Here we found that Martian deuterium content negatively affected survival of shrimp in semi-closed biosphere on a year-long time scale. Moreover, the bacterium Escherichia coli grows slower at Martian isotopic compositions and even slower at Venus's compositions. Thus, the biological impact of varying stable isotope compositions needs to be taken into account when planning interplanetary missions.
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spelling doaj.art-69d7537a2c1a438381243a4186b3440b2022-12-22T02:43:01ZengPublic Library of Science (PLoS)PLoS ONE1932-62032017-01-01121e016929610.1371/journal.pone.0169296On the Effect of Planetary Stable Isotope Compositions on Growth and Survival of Terrestrial Organisms.Xueshu XieRoman A ZubarevIsotopic compositions of reactants affect the rates of chemical and biochemical reactions. Usually it is assumed that heavy stable isotope enrichment leads to progressively slower reactions. Yet the effect of stable isotopes may be nonlinear, as exemplified by the "isotopic resonance" phenomenon. Since the isotopic compositions of other planets of Solar system, including Mars and Venus, are markedly different from terrestrial (e.g., deuterium content is ≈5 and ≈100 times higher, respectively), it is far from certain that terrestrial life will thrive in these isotopic conditions. Here we found that Martian deuterium content negatively affected survival of shrimp in semi-closed biosphere on a year-long time scale. Moreover, the bacterium Escherichia coli grows slower at Martian isotopic compositions and even slower at Venus's compositions. Thus, the biological impact of varying stable isotope compositions needs to be taken into account when planning interplanetary missions.http://europepmc.org/articles/PMC5215764?pdf=render
spellingShingle Xueshu Xie
Roman A Zubarev
On the Effect of Planetary Stable Isotope Compositions on Growth and Survival of Terrestrial Organisms.
PLoS ONE
title On the Effect of Planetary Stable Isotope Compositions on Growth and Survival of Terrestrial Organisms.
title_full On the Effect of Planetary Stable Isotope Compositions on Growth and Survival of Terrestrial Organisms.
title_fullStr On the Effect of Planetary Stable Isotope Compositions on Growth and Survival of Terrestrial Organisms.
title_full_unstemmed On the Effect of Planetary Stable Isotope Compositions on Growth and Survival of Terrestrial Organisms.
title_short On the Effect of Planetary Stable Isotope Compositions on Growth and Survival of Terrestrial Organisms.
title_sort on the effect of planetary stable isotope compositions on growth and survival of terrestrial organisms
url http://europepmc.org/articles/PMC5215764?pdf=render
work_keys_str_mv AT xueshuxie ontheeffectofplanetarystableisotopecompositionsongrowthandsurvivalofterrestrialorganisms
AT romanazubarev ontheeffectofplanetarystableisotopecompositionsongrowthandsurvivalofterrestrialorganisms