Frindte, Katharina ORCID: 0000-0002-6801-5853, Lehndorff, Eva, Vlaminck, Stefan, Werner, Katharina, Kehl, Martin, Khormali, Farhad and Knief, Claudia ORCID: 0000-0001-9939-6241 (2020). Evidence for signatures of ancient microbial life in paleosols. Sci Rep, 10 (1). BERLIN: NATURE RESEARCH. ISSN 2045-2322

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Abstract

Loess-paleosol sequences are terrestrial archives of past climate change. They may host traces of ancient microbial life, but little information is available on the recovery of microbial biomarkers from such deposits. We hypothesized that microbial communities in soil horizons up to an age of 127 kyr carry information related to past environments. We extracted DNA from a loess-paleosol sequence near Toshan, Northern Iran, with 26 m thick deposits showing different degrees of soil development, performed quantitative PCR and 16S rRNA gene amplicon sequencing. Periods of soil formation archived within the loess sediment led to higher diversity and bacterial abundance in the paleosol horizons. Community composition fluctuated over the loess-paleosol sequence and was mainly correlated with age and depth, (ADONIS R-2 < 0.14, P <= 0.002), while responses to paleosol soil traits were weaker. Phyla like Bacteriodetes, Proteobacteria or Acidobacteria were more prevalent in paleosol horizons characterized by intense soil formation, while weakly developed paleosols or loess horizons hosted a higher percentage and diversity of Actinobacteria. Taken together, our findings indicate that the microbial community in loess-paleosol sequences carries signatures of earlier environmental conditions that are preserved until today.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Frindte, KatharinaUNSPECIFIEDorcid.org/0000-0002-6801-5853UNSPECIFIED
Lehndorff, EvaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Vlaminck, StefanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Werner, KatharinaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kehl, MartinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Khormali, FarhadUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Knief, ClaudiaUNSPECIFIEDorcid.org/0000-0001-9939-6241UNSPECIFIED
URN: urn:nbn:de:hbz:38-315420
DOI: 10.1038/s41598-020-73938-9
Journal or Publication Title: Sci Rep
Volume: 10
Number: 1
Date: 2020
Publisher: NATURE RESEARCH
Place of Publication: BERLIN
ISSN: 2045-2322
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
NORTHERN IRAN; COMMUNITY COMPOSITION; SIZE DISTRIBUTION; LOESS DEPOSITS; SP NOV.; SOIL; BACTERIAL; CLIMATE; LAKE; DNAMultiple languages
Multidisciplinary SciencesMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/31542

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