Universität zu Köln

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:	Creators Email ORCID ORCID Put Code Frindte, Katharina UNSPECIFIED orcid.org/0000-0002-6801-5853 UNSPECIFIED Lehndorff, Eva UNSPECIFIED UNSPECIFIED UNSPECIFIED Vlaminck, Stefan UNSPECIFIED UNSPECIFIED UNSPECIFIED Werner, Katharina UNSPECIFIED UNSPECIFIED UNSPECIFIED Kehl, Martin UNSPECIFIED UNSPECIFIED UNSPECIFIED Khormali, Farhad UNSPECIFIED UNSPECIFIED UNSPECIFIED Knief, Claudia UNSPECIFIED orcid.org/0000-0001-9939-6241 UNSPECIFIED
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:	Keywords Language NORTHERN IRAN; COMMUNITY COMPOSITION; SIZE DISTRIBUTION; LOESS DEPOSITS; SP NOV.; SOIL; BACTERIAL; CLIMATE; LAKE; DNA Multiple languages Multidisciplinary Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/31542