Magnesium Stable Isotope Fractionation on a Cellular Level Explored by Cyanobacteria and Black Fungi with Implications for Higher Plants
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F18%3A00498448" target="_blank" >RIV/61388971:_____/18:00498448 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1021/acs.est.8b02238" target="_blank" >http://dx.doi.org/10.1021/acs.est.8b02238</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.est.8b02238" target="_blank" >10.1021/acs.est.8b02238</a>
Alternative languages
Result language
angličtina
Original language name
Magnesium Stable Isotope Fractionation on a Cellular Level Explored by Cyanobacteria and Black Fungi with Implications for Higher Plants
Original language description
In a controlled growth experiment we found that the cyanobacterium Nostoc punctiforme has a bulk cell Mg-26/Mg-24 ratio (expressed as delta Mg-26) that is -0.27 parts per thousand lower than the growth solution at a pH of ca. 5.9. This contrasts with a recently published delta Mg-26 value that was 0.65 parts per thousand higher than growth solution for the black fungus Knufia petricola at similar laboratory conditions, interpreted to reflect loss of Mg-24 during cell growth. By a mass balance model constrained by delta Mg-26 in chlorophyll extract we inferred the delta Mg-26 value of the main Mg compartments in a cyanobacteria cell: free cytosolic Mg (-2.64 parts per thousand), chlorophyll (1.85 parts per thousand), and the nonchlorophyll-bonded Mg compartments like ATP and ribosomes (-0.64%o). The lower delta Mg-26 found in Nostoc punctiforme would thus result from the absence of significant Mg efflux during cell growth in combination with either (a) discrimination against Mg-26 during uptake by desolvation of Mg or transport across protein channels or (b) discrimination against Mg-24 in the membrane transporter during efflux. The model predicts the preferential incorporation of Mg-26 in cells and plant organs low in Mg and the absence of isotope fractionation in those high in Mg, corroborated by a compilation of Mg isotope ratios from fungi, bacteria, and higher plants.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10618 - Ecology
Result continuities
Project
<a href="/en/project/LO1416" target="_blank" >LO1416: Algatech plus</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Environmental Science & Technology Letters
ISSN
2328-8930
e-ISSN
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Volume of the periodical
52
Issue of the periodical within the volume
21
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
12216-12224
UT code for WoS article
000449722200026
EID of the result in the Scopus database
2-s2.0-85056131304