Geochemical features and sources of hydrocarbons and fatty acids in soils from the McMurdo Dry Valleys in the Antarctic

Matsumoto, Genki I.; Honda, Eisuke; Sonoda, Kazuhiko; Yamamoto, Shuichi; Takemura, Tamiko

doi:10.1016/j.polar.2010.04.001

Cited by 24 publications

(22 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The odd/even predominance of n-alkanes in soil is typically indicative of higher plant inputs (Eglinton and Hamilton, 1967). Alkanes displaying little or no predominance can be derived from bacterial lipids, eroded material from sedimentary rocks, or petroleum (Matsumoto et al, 2010) and anthropogenic sources (Grosjean and Logan, 2007). Distribution patterns of n-alkanes varied between samples.…”

Section: Extractable Lipidsmentioning

confidence: 99%

“…Horizons 827-Cox2, 828-Cox2, 828-Cox3, and 831-Cz2 displayed slight even/odd predominance, while the even/odd ratios of remaining horizons were close to unity. Alkane sources and distributions in McMurdo Dry Valleys were discussed in great detail by Matsumoto et al, (1990aMatsumoto et al, ( , 2010, where odd/even predominance was reported. Furthermore, Matsumoto et al (2010) provided stable isotope signatures (d 13 C) of alkanes, inferring the erosion of Beacon Supergroup sedimentary rocks and endolithic environments as major sources of these lipids in McMurdo Dry Valley paleosols.…”

Section: Extractable Lipidsmentioning

confidence: 99%

“…Alkane sources and distributions in McMurdo Dry Valleys were discussed in great detail by Matsumoto et al, (1990aMatsumoto et al, ( , 2010, where odd/even predominance was reported. Furthermore, Matsumoto et al (2010) provided stable isotope signatures (d 13 C) of alkanes, inferring the erosion of Beacon Supergroup sedimentary rocks and endolithic environments as major sources of these lipids in McMurdo Dry Valley paleosols. Alkane abundances in deeper horizons (828-Cox2, 10-20 cm; 828-Cox3, 20-30 cm) are even 4-fold higher, 62.3% and 51.4%, respectively, than in the surface horizons (828-Cox1, 0-10 cm; 829-Cox, 0-7 cm), where they account for 15.4% and 27.1% of total alkanes, respectively.…”

Section: Extractable Lipidsmentioning

confidence: 99%

“…Matsumoto et al (1981Matsumoto et al ( , 1990aMatsumoto et al ( , 1990bMatsumoto et al ( , 2010 discussed the origin of long-chained fatty acids (C 20 -C 40 ) and suggested that the erosion of Beacon Supergroup sandstone is the likely source of these fossilized biomarkers. However, we did not detect any fatty acids above a C 28 chain length, even though the paleosols comprised minerals of the Beacon Supergroup, including granite (sites 827, 828, and 829) and locally derived sandstone and dolerite (site 831) (Mahaney et al, 2009).…”

Section: 22mentioning

confidence: 99%

“…Long-chained fatty acids (C 20 -C 28 ) represent a contribution from Antarctic flora, such as mosses and lichens (Finegold et al, 1990) and, less likely, higher plant inputs, given that vegetation in Antarctica is limited to few species (in the northern and western parts of the Antarctic Peninsula). Additionally, based on distribution patterns and stable isotope signatures (d 13 C), Matsumoto et al (2010) suggested that they are derived from ancient material rather than from a current source. Short-chained fatty acids (<C 20 ), on the other hand, are mainly attributed to microorganisms such as microalgae and bacteria, but higher plants can also contribute to this class (Harwood and Russell, 1984;Volkman et al, 1998).…”

Section: 22mentioning

confidence: 99%

See 4 more Smart Citations

A Bacterial Enrichment Study and Overview of the Extractable Lipids from Paleosols in the Dry Valleys, Antarctica: Implications for Future Mars Reconnaissance

et al. 2011

View full text Add to dashboard Cite

The Dry Valleys of Antarctica are one of the coldest and driest environments on Earth with paleosols in selected areas that date to the emplacement of tills by warm-based ice during the Early Miocene. Cited as an analogue to the martian surface, the ability of the Antarctic environment to support microbial life-forms is a matter of special interest, particularly with the upcoming NASA/ESA 2018 ExoMars mission. Lipid biomarkers were extracted and analyzed by gas chromatography--mass spectrometry to assess sources of organic carbon and evaluate the contribution of microbial species to the organic matter of the paleosols. Paleosol samples from the ice-free Dry Valleys were also subsampled and cultivated in a growth medium from which DNA was extracted with the explicit purpose of the positive identification of bacteria. Several species of bacteria were grown in solution and the genus identified. A similar match of the data to sequenced DNA showed that Alphaproteobacteria, Gammaproteobacteria, Bacteriodetes, and Actinobacteridae species were cultivated. The results confirm the presence of bacteria within some paleosols, but no assumptions have been made with regard to in situ activity at present. These results underscore the need not only to further investigate Dry Valley cryosols but also to develop reconnaissance strategies to determine whether such likely Earth-like environments on the Red Planet also contain life.

show abstract

Section: Extractable Lipidsmentioning

confidence: 99%

Section: Extractable Lipidsmentioning

confidence: 99%

Section: Extractable Lipidsmentioning

confidence: 99%

Section: 22mentioning

confidence: 99%

Section: 22mentioning

confidence: 99%

See 3 more Smart Citations

A Bacterial Enrichment Study and Overview of the Extractable Lipids from Paleosols in the Dry Valleys, Antarctica: Implications for Future Mars Reconnaissance

et al. 2011

View full text Add to dashboard Cite

show abstract

Determination of fatty acids in soil samples by gas chromatography with mass spectrometry coupled with headspace solid-phase microextraction using a homemade sol-gel fiber†

et al. 2014

View full text Add to dashboard Cite

Through the use of a homemade sol-gel-derived fiber, a headspace solid-phase microextraction technique coupled to gas chromatography with mass spectrometry was developed for the determination of fatty acids with long, even-numbered carbon chains (C12 -C24 ) in soil samples. The experimental parameters such as reaction time, temperature, and ionic strength that might affect derivatization, extraction, and desorption were investigated. Under the optimized conditions, the linearity of the method ranged from 0.1 to 100 mg/L with a correlation coefficient >0.997. The limit of detection values based on a signal-to-noise ratio of 3:1 were determined with the concentration from 0.39 to 39.4 μg/L. The recoveries of the method for the soil samples were from 91.15 to 108.1%. This developed method using a homemade fiber showed a higher sensitivity than that using a commercial polydimethylsiloxane fiber and was also for the analysis of real soil samples from the Paomaling geological park of China.

show abstract

Long chain n-alkanes and their carbon isotopes in lichen species from western Hubei Province: implication for geological records

2011

View full text Add to dashboard Cite

Geochemical features and sources of hydrocarbons and fatty acids in soils from the McMurdo Dry Valleys in the Antarctic

Cited by 24 publications

References 28 publications

A Bacterial Enrichment Study and Overview of the Extractable Lipids from Paleosols in the Dry Valleys, Antarctica: Implications for Future Mars Reconnaissance

A Bacterial Enrichment Study and Overview of the Extractable Lipids from Paleosols in the Dry Valleys, Antarctica: Implications for Future Mars Reconnaissance

Determination of fatty acids in soil samples by gas chromatography with mass spectrometry coupled with headspace solid-phase microextraction using a homemade sol-gel fiber†

Long chain n-alkanes and their carbon isotopes in lichen species from western Hubei Province: implication for geological records

Contact Info

Product

Resources

About