Fractionation of stable carbon isotopes by photoautotrophically growing anoxygenic purple and green sulfur bacteria

Zyakun, A. M.; Lunina, O. N.; Prusakova, T. S.; Pimenov, Nikolay; Иванов, М. В.

doi:10.1134/s0026261709060137

Cited by 27 publications

(39 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The δ 13 C POC measured in the Cadagno chemocline in late June and early October were −41‰ and −39‰, respectively (Figure 4b, Table S1A). The ∆ 13 C value at Lake Cadagno is higher than, but well within range of that estimated in the chemocline in other sulfidic, meromictic lakes, and fjords with strong populations of anoxygenic phototrophs, even in cases where PSB dominated the chemocline (Bovee & Pearson, 2014;Pimenov, Lunina, Prusakova, Rusanov, & Ivanov, 2008;Velinsky & Fogel, 1999;Zyakun et al, 2009 (Peduzzi et al, 2012;Tonolla, Peduzzi, Demarta, Peduzzi, & Hahn, 2004;Tonolla et al, 1999Tonolla et al, , 2017. At the chemocline, however, C-isotope fractionation increases, reaching a mid-chemocline value of 32‰.…”

Section: Carbon Isotope Fractionation Due To C-fixation In the Chemsupporting

confidence: 74%

“…Although the details are still uncertain, the dominance of PSB or GSB is most likely a response to environmental changes in geochemical and physical lake properties (Tonolla et al, 2005). Other studies from meromictic lakes (i.e., Lake Mogil′noe) have reported a relationship between the bulk δ 13 C POC detected in the chemocline and the dominance of GSB or PSB (Zyakun et al, 2009). Other studies from meromictic lakes (i.e., Lake Mogil′noe) have reported a relationship between the bulk δ 13 C POC detected in the chemocline and the dominance of GSB or PSB (Zyakun et al, 2009).…”

Section: Carbon Isotope Fractionation Due To C-fixation In the Chemmentioning

confidence: 99%

“…The significance of anoxygenic photosynthesis in total carbon production varies broadly amongst euxinic stratified lakes used in a number of documented studies. Berg et al (2016) report the importance of the microbial iron cycle to the chemocline (up to 10% of primary production) and thereby present Lake Cadagno, T A B L E 1 C-isotope fractionation between DIC and POC pools for pure, cultured strains, and natural environments Zyakun et al (2009) 12.2 Laboratory culture Sirevåg et al (1977) 2.5-5.2 Laboratory cultures Quandt et al (1977) 13.7-19.2 Framvaren Fjord Velinsky and Fogel (1999) Chromatium sp. Therefore, it is important to highlight that while these lakes cannot recreate a particular early Earth environment in its entirety, they can be used for process studies.…”

mentioning

confidence: 99%

“…For example, while anoxygenic phototrophs account for 83% of the total primary population in Fayetteville Green Lake, primary production by anoxygenic phototrophic bacteria in Big Soda Lake contributes approximately 10% to the total carbon production (reviewed in Canfield et al, 2005). PSB Reductive pentose phosphate 19.6-22.5 Culture: Shunet & Mogil′noe Zyakun et al (2009) 15.5-22.0 Laboratory culture Wong et al (1975) 22.5 Laboratory culture Sirevåg et al (1977) 19.6 Laboratory culture (Chr. By exploring the systematics within these stratified lakes, we can test the processes we believe to have been important in ancient environments (i.e., Bovee & Pearson, 2014;Crowe et al, 2008).…”

mentioning

confidence: 99%

See 3 more Smart Citations

Carbon isotope fractionation by anoxygenic phototrophic bacteria in euxinic Lake Cadagno

et al. 2017

View full text Add to dashboard Cite

Anoxygenic phototrophic bacteria utilize ancient metabolic pathways to link sulfur and iron metabolism to the reduction of CO . In meromictic Lake Cadagno, Switzerland, both purple sulfur (PSB) and green sulfur anoxygenic phototrophic bacteria (GSB) dominate the chemocline community and drive the sulfur cycle. PSB and GSB fix carbon utilizing different enzymatic pathways and these fractionate C-isotopes to different extents. Here, these differences in C-isotope fractionation are used to constrain the relative input of various anoxygenic phototrophs to the bulk community C-isotope signal in the chemocline. We sought to determine whether a distinct isotopic signature of GSB and PSB in the chemocline persists in the settling fraction and in the sediment. To answer these questions, we also sought investigated C-isotope fractionation in the water column, settling material, and sediment of Lake Cadagno, compared these values to C-isotope fractionation of isolated anoxygenic phototroph cultures, and took a mass balance approach to investigate relative contributions to the bulk fractionation signature. We found a large C-isotope fractionation between dissolved inorganic carbon (DIC) and particulate organic carbon (POC) in the Lake Cadagno chemocline. This large fractionation between the DIC and POC was also found in culture experiments carried out with anoxygenic phototrophic bacteria isolated from the lake. In the Lake Cadagno chemocline, anoxygenic phototrophic bacteria controlled the bulk C-isotope fractionation, but the influence of GSB and PSB differed with season. Furthermore, the contribution of PSB and GSB to bulk C-isotope fractionation in the chemocline could be traced in the settling fraction and in the sediment. Taken together with other studies, such as lipid biomarker analyzes and investigations of other stratified lakes, these results offer a firmer understanding of diagenetic influences on bacterial biomass.

show abstract

Section: Carbon Isotope Fractionation Due To C-fixation In the Chemsupporting

confidence: 74%

Section: Carbon Isotope Fractionation Due To C-fixation In the Chemmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Carbon isotope fractionation by anoxygenic phototrophic bacteria in euxinic Lake Cadagno

et al. 2017

View full text Add to dashboard Cite

show abstract

“…For example, acetotrophic methanogenesis can generate CO 2 with d 13 C values of as much as 30 % higher than those of the acetate used as a substrate in the reaction (Conrad 2005;Steinmann et al 2008). Alternatively, many anaerobic microorganisms, for example hydrogenotrophic methanogenic (Whiticar 1999) or phototrophic sulphatereducing bacteria (Ormerod 1983;Zyakun et al 2009), use CO 2 as a carbon source. Their preferential use of 12 C can increase the d 13 C values of the remaining DIC pool.…”

Section: Dic In the Hypolimnionmentioning

confidence: 99%

An inter-regional assessment of concentrations and δ13C values of methane and dissolved inorganic carbon in small European lakes

et al. 2015

View full text Add to dashboard Cite

Methane (CH 4 ) and carbon dioxide emissions from lakes are relevant for assessing the greenhouse gas output of wetlands. However, only few standardized datasets describe concentrations of these gases in lakes across different geographical regions. We studied concentrations and stable carbon isotopic composition (d 13 C) of CH 4 and dissolved inorganic carbon (DIC) in 32 small lakes from Finland, Sweden, Germany, the Netherlands, and Switzerland in late summer. Higher concentrations and d 13 C values of DIC were observed in calcareous lakes than in lakes on non-calcareous areas. In stratified lakes, d 13 C values of DIC were generally lower in the hypolimnion due to the degradation of organic matter (OM). Unexpectedly, increased d 13 C values of DIC were registered above the sediment in several lakes. This may reflect carbonate dissolution in calcareous lakes or methanogenesis in deepwater layers or in the sediments. Surface water CH 4 concentrations were generally higher in western and central European lakes than in Fennoscandian lakes, possibly due to higher CH 4 production in the littoral sediments and lateral transport, whereas CH 4 concentrations in the hypolimnion did not differ significantly between the regions. The d 13 C values of CH 4 in the sediment suggest that d 13 C values of biogenic CH 4 are not necessarily linked to d 13 C values of sedimentary OM but may be strongly influenced by OM quality and methanogenic pathway. Our study suggests that CH 4 and DIC cycling in small lakes differ between geographical regions and that this should be taken into account when regional studies on greenhouse gas emissions are upscaled to inter-regional scales.

show abstract

Quantitative constraints on carbon cycling and temporal changes in episodic euxinia during the end-Permian mass extinction in South China

Zhang

Shen

2021

Chemical Geology

View full text Add to dashboard Cite

Fractionation of stable carbon isotopes by photoautotrophically growing anoxygenic purple and green sulfur bacteria

Cited by 27 publications

References 15 publications

Carbon isotope fractionation by anoxygenic phototrophic bacteria in euxinic Lake Cadagno

Carbon isotope fractionation by anoxygenic phototrophic bacteria in euxinic Lake Cadagno

An inter-regional assessment of concentrations and δ13C values of methane and dissolved inorganic carbon in small European lakes

Quantitative constraints on carbon cycling and temporal changes in episodic euxinia during the end-Permian mass extinction in South China

Contact Info

Product

Resources

About