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BG | Articles | Volume 17, issue 14
Biogeosciences, 17, 3891–3901, 2020
https://doi.org/10.5194/bg-17-3891-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Biogeosciences, 17, 3891–3901, 2020
https://doi.org/10.5194/bg-17-3891-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 31 Jul 2020

Research article | 31 Jul 2020

The stable carbon isotope signature of methane produced by saprotrophic fungi

Moritz Schroll et al.

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Beckmann, S., Krüger, M., Engelen, B., Gorbushina, A. A., and Cypionka, H.: Role of bacteria, archaea and fungi involved in methane release in abandoned coal mines, Geomicrobiol. J., 28, 347–358, https://doi.org/10.1080/01490451.2010.503258, 2011. 
Bižić, M., Klintzsch, T., Ionescu, D., Hindiyeh, M. Y., Günthel, M., Muro-Pastor, A. M., Eckert, W., Urich, T., Keppler, F., and Grossart, H. P.: Aquatic and terrestrial cyanobacteria produce methane, Sci. Adv., 6, eaax5343, https://doi.org/10.1126/sciadv.aax5343, 2020. 
Boros, M. and Keppler, F.: Methane production and bioactivity-A link to oxido-reductive stress, Front. Physiol., 10, 1244, https://doi.org/10.3389/fphys.2019.01244, 2019. 
Bowling, D. R., Pataki, D. E., and Randerson, J. T.: Carbon isotopes in terrestrial ecosystem pools and CO2 fluxes, New Phytol., 178, 24–40, https://doi.org/10.1111/j.1469-8137.2007.02342.x, 2008. 
Brand, W. A. and Coplen, T. B.: Stable isotope deltas: Tiny, yet robust signatures in nature, Isotopes Environ. Health Stud., 48, 393–409, https://doi.org/10.1080/10256016.2012.666977, 2012. 
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Fungi have recently been identified to produce the greenhouse gas methane. Here, we investigated the stable carbon isotope values of methane produced by saprotrophic fungi. Our results show that stable isotope values of methane from fungi are dependent on the fungal species and the metabolized substrate. They cover a broad range and overlap with stable carbon isotope values of methane reported for methanogenic archaea, the thermogenic degradation of organic matter, and other eukaryotes.
Fungi have recently been identified to produce the greenhouse gas methane. Here, we investigated...
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