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Alonso L, Pommier T, Abrouk D, Hugoni M, Tran Van V, Minard G, Valiente Moro C, Moënne-Loccoz Y. Microbiome Analysis of New, Insidious Cave Wall Alterations in the Apse of Lascaux Cave. Microorganisms 2022; 10:microorganisms10122449. [PMID: 36557702 PMCID: PMC9785961 DOI: 10.3390/microorganisms10122449] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/05/2022] [Accepted: 12/06/2022] [Indexed: 12/14/2022] Open
Abstract
Lascaux Cave is a UNESCO site that was closed to the public following wall surface alterations. Most black stains that had formed on wall surface are stable or receding, but a new type of alteration visually quite different (termed dark zones) developed in Lascaux's Apse room in the last 15 years. Here, we tested the hypothesis that dark zones displayed a different microbial community than black stains previously documented in the same room, using metabarcoding (MiSeq sequencing). Indeed, dark zones, black stains and neighboring unstained parts displayed distinct microbial communities. However, similarly to what was observed in black stains, pigmented fungi such as Ochroconis (now Scolecobasidium) were more abundant and the bacteria Pseudomonas less abundant in dark zones than in unstained parts. The collembola Folsomia candida, which can disseminate microorganisms involved in black stain development, was also present on dark zones. Illumina sequencing evidenced Ochroconis (Scolecobasidium) in all collembola samples from dark zones, as in collembola from black stains. This study shows that the microbial properties of dark zones are peculiar, yet dark zones display a number of microbial resemblances with black stains, which suggests a possible role of collembola in promoting these two types of microbial alterations on wall surfaces.
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Affiliation(s)
- Lise Alonso
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, INRAe, VetAgro Sup, UMR5557 Ecologie Microbienne, F-69622 Villeurbanne, France
| | - Thomas Pommier
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, INRAe, VetAgro Sup, UMR5557 Ecologie Microbienne, F-69622 Villeurbanne, France
| | - Danis Abrouk
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, INRAe, VetAgro Sup, UMR5557 Ecologie Microbienne, F-69622 Villeurbanne, France
| | - Mylène Hugoni
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, INRAe, VetAgro Sup, UMR5557 Ecologie Microbienne, F-69622 Villeurbanne, France
- Univ Lyon, INSA Lyon, CNRS, UMR5240 Microbiologie Adaptation et Pathogénie, F-69621 Villeurbanne, France
- Institut Universitaire de France (IUF), F-75005 Paris, France
| | - Van Tran Van
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, INRAe, VetAgro Sup, UMR5557 Ecologie Microbienne, F-69622 Villeurbanne, France
| | - Guillaume Minard
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, INRAe, VetAgro Sup, UMR5557 Ecologie Microbienne, F-69622 Villeurbanne, France
| | - Claire Valiente Moro
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, INRAe, VetAgro Sup, UMR5557 Ecologie Microbienne, F-69622 Villeurbanne, France
| | - Yvan Moënne-Loccoz
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, INRAe, VetAgro Sup, UMR5557 Ecologie Microbienne, F-69622 Villeurbanne, France
- Correspondence:
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