Microbial Lipid Adaptions of Biofilm-Forming, Sulfide-Oxidzing Bacteria Inhabiting Sulfidic Caves in Central Italy

A. McDonnell; L. Levin; E. Hartke; K.S. Dawson; C.L. Grettenberger; K.H. Freeman; J.L. Macalady; F. Schubotz.

doi:10.3997/2214-4609.202533321

oa Microbial Lipid Adaptions of Biofilm-Forming, Sulfide-Oxidzing Bacteria Inhabiting Sulfidic Caves in Central Italy
Authors A. McDonnell¹, L. Levin², E. Hartke³, K.S. Dawson⁴, C.L. Grettenberger⁵, K.H. Freeman³, J.L. Macalady³ and F. Schubotz.⁶
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¹ Montana State University, , MT, USA ² University of Southern Denmark, , Denmark ³ Pennsylvania State University, , PA, USA ⁴ Rutgers University, , NJ, USA ⁵ UC Davis, , CA, USA ⁶ MARUM, University of Bremen, , Germany
Publisher: European Association of Geoscientists & Engineers
Source: Conference Proceedings, IMOG 2025, Sep 2025, Volume 2025, p.1 - 2
DOI: https://doi.org/10.3997/2214-4609.202533321

Abstract

Summary

We report the exclusive occurrence of non-phosphorus containing intact polar membrane lipids in biofilms found in sulfidic caves. These biofilms are known to be mainly comprised of sulfide-oxidizing bacteria belonging to the gram negative Campylobacteria and Gammaproteobacteria, which are not know to produce the observed glycolipids and betaine lipids. We conclude that these cave communities are severely phosphorus limited and will furthermore provide genetic evidence for the lipid assignments.

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2025-09-07

2026-01-18

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References

BosakT., SchubotzF., Santiago-TorioA., KuehlJ., CarlsonH.K., SummonsR.E., ArkinA.P., DeutschbauerA.M. (2016) System-wide adaptations of Desulfovibrio alaskensis G20 to phosphate-limited conditions. PLoS ONE11(12): e0168719.
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MacaladyJ.L., DattaguptaS., SchaperdothI., JonesD.S., DruschelG.K. and EastmanD. (2008) Niche differentiation among sulfur-oxidizing bacterial populations in cave waters. The ISME Journal2, 590–601.
[Google Scholar]
SchubotzF.Membrane homeostasis upon nutrient (C, N, P) limitation (2019) In: O.Geiger (ed.) Biogenesis of Fatty Acids, Lipids and Membranes. Handbook of Hydrocarbon and Lipid Microbiology. Springer Nature Switzerland AG.
[Google Scholar]

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oa Microbial Lipid Adaptions of Biofilm-Forming, Sulfide-Oxidzing Bacteria Inhabiting Sulfidic Caves in Central Italy

Abstract

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