Universität zu Köln

Drake, Henrik ORCID: 0000-0001-7230-6509, Ivarsson, Magnus, Heim, Christine ORCID: 0000-0003-4716-9316, Snoeyenbos-West, Oona, Bengtson, Stefan ORCID: 0000-0003-0206-5791, Belivanova, Veneta and Whitehouse, Martin ORCID: 0000-0003-2227-577X (2021). Fossilized anaerobic and possibly methanogenesis-fueling fungi identified deep within the Siljan impact structure, Sweden. Commun. Earth Environ., 2 (1). LONDON: SPRINGERNATURE. ISSN 2662-4435

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Abstract

Recent discoveries of extant and fossilized communities indicate that eukaryotes, including fungi, inhabit energy-poor and anoxic environments deep within the fractured igneous crust. This subterranean biosphere may constitute the largest fungal habitat on our planet, but knowledge of abyssal fungi and their syntrophic interactions with prokaryotes and their concomitant metabolisms is scarce. Here we report findings of fossilized, chitin-bearing fungal hyphae at similar to 540m depth in fractured bedrock of the Siljan impact structure, the largest crater in Europe. Strong C-13-enrichment of calcite precipitated with and on the fungi suggests formation following methanogenesis, and that the anaerobic fungi decomposed dispersed organic matter producing for example H-2 that may have fueled autotrophic methanogens. An Eocene age determined for the calcite infers the first timing constraint of fossilized fungi in the continental igneous crust. Fungi may be widespread decomposers of organic matter and overlooked providers of H-2 to autotrophs in the vast rock-hosted deep biosphere.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Drake, Henrik UNSPECIFIED orcid.org/0000-0001-7230-6509 UNSPECIFIED Ivarsson, Magnus UNSPECIFIED UNSPECIFIED UNSPECIFIED Heim, Christine UNSPECIFIED orcid.org/0000-0003-4716-9316 UNSPECIFIED Snoeyenbos-West, Oona UNSPECIFIED UNSPECIFIED UNSPECIFIED Bengtson, Stefan UNSPECIFIED orcid.org/0000-0003-0206-5791 UNSPECIFIED Belivanova, Veneta UNSPECIFIED UNSPECIFIED UNSPECIFIED Whitehouse, Martin UNSPECIFIED orcid.org/0000-0003-2227-577X UNSPECIFIED
URN:	urn:nbn:de:hbz:38-586672
DOI:	10.1038/s43247-021-00107-9
Journal or Publication Title:	Commun. Earth Environ.
Volume:	2
Number:	1
Date:	2021
Publisher:	SPRINGERNATURE
Place of Publication:	LONDON
ISSN:	2662-4435
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ORGANIC-MATTER; SUBSURFACE; DIVERSITY; BIOMASS; ORIGIN; RECORD; LIFE; ABUNDANCE; BACTERIA; AQUIFERS Multiple languages Environmental Sciences; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/58667