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Diversity and Colonization Strategies of Endolithic Cyanobacteria in the Cold Mountain Desert of Pamir

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dc.abstract.enMicroorganisms can survive in extreme environments and oligotrophic habitats thanks to their specific adaptive capacity. Due to its severe and contrasting climate conditions, the cold mountain desert in Eastern Pamir provides a unique environment for analyzing microbial adaptation mechanisms occurring within colonization of endolithic habitats. This study aims to investigate the composition and structure of endolithic microbial communities and analyze the interactions between microorganisms and colonized lithic substrates. Endolithic biofilms were examined using scanning electron microscopy in backscattered electron mode (SEM-BSE) and next-generation sequencing (NGS) applying amplicon sequence variants (ASVs) approach. The investigation of the V3–V4 region of 16S rRNA gene revealed that endolithic communities are dominated by Actinobacteria (26%), Proteobacteria (23%), and Cyanobacteria (11.4%). Cyanobacteria were represented by Oxyphotobacteria with a predominance of subclasses of Oscillatoriophycidae, Synechococcophycideae, and Nostocophycidae as well as the rarely occurring Sericytochromatia. The positive correlation between the contribution of the orders Synechococcales and Rhizobiales to community structure suggests that some functionally closed taxa of Cyanobacteria and Proteobacteria can complement each other, for example, in nitrogen fixation in endolithic communities. The endolithic communities occurring in Eastern Pamir were identified as complex systems whose composition and structure seem to be influenced by the architecture of microhabitats and related microenvironmental conditions.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorKhomutovska, Nataliia
dc.contributor.authorRíos, Asunción de los
dc.contributor.authorJasser, Iwona
dc.date.accessioned2024-01-24T22:08:08Z
dc.date.available2024-01-24T22:08:08Z
dc.date.copyright2020-12-22
dc.date.issued2021
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financeŚrodki finansowe przyznane na realizację projektu w zakresie badań naukowych lub prac rozwojowych
dc.description.number1
dc.description.versionFINAL_PUBLISHED
dc.description.volume9
dc.identifier.doi10.3390/MICROORGANISMS9010006
dc.identifier.issn2076-2607
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/105060
dc.identifier.weblinkhttps://www.mdpi.com/2076-2607/9/1/6/pdf
dc.languageeng
dc.pbn.affiliationbiological sciences
dc.relation.ispartofMicroorganisms
dc.relation.pages6
dc.rightsCC-BY
dc.sciencecloudnosend
dc.subject.enlithobionts
dc.subject.enendoliths
dc.subject.enEastern Pamir
dc.subject.enV3–V4 hypervariable region of 16S rRNA gene
dc.subject.enASV (amplicon sequence variant)
dc.subject.enscanning electron microscopy
dc.titleDiversity and Colonization Strategies of Endolithic Cyanobacteria in the Cold Mountain Desert of Pamir
dc.typeJournalArticle
dspace.entity.typePublication