From acidophilic to ornithogenic: microbial community dynamics in moss banks altered by gentoo penguins

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dc.contributor.authorPrekrasna-Kviatkovska, Yevheniia
dc.contributor.authorParnikoza, Ivan
dc.contributor.authorYerkhova, Anna
dc.contributor.authorStelmakh, Olesia
dc.contributor.authorPavlovska, Mariia
dc.contributor.authorDzyndra, Marta
dc.contributor.authorYarovyi, Oleksandr
dc.contributor.authorDykyi, Evgen
dc.date.accessioned2024-04-25T17:15:16Z
dc.date.available2024-04-25T17:15:16Z
dc.date.issued2024
dc.description.abstractIntroduction: The study explores the indirect impact of climate change driven by gentoo’s penguin colonization pressure on the microbial communities of moss banks formed by Tall moss turf subformation in central maritime Antarctica. Methods: Microbial communities and chemical composition of the differently affected moss banks (Unaffected, Impacted and Desolated) located on Galindez Island and Сape Tuxen on the mainland of Kyiv Peninsula were analyzed. Results: The native microbiota of the moss banks’ peat was analyzed for the first time, revealing a predominant presence of Acidobacteria (32.2 ± 14.4%), followed by Actinobacteria (15.1 ± 4.0%) and Alphaproteobacteria (9.7 ± 4.1%). Penguin colonization and subsequent desolation of moss banks resulted in an increase in peat pH (from 4.7 ± 0.05 to 7.2 ± 0.6) and elevated concentrations of soluble nitrogen (from 1.8 ± 0.4 to 46.9 ± 2.1 DIN, mg/kg) and soluble phosphorus compounds (from 3.6 ± 2.6 to 20.0 ± 1.8 DIP, mg/kg). The contrasting composition of peat and penguin feces led to the elimination of the initial peat microbiota, with an increase in Betaproteobacteria (from 1.3 ± 0.8% to 30.5 ± 23%) and Bacteroidota (from 5.5 ± 3.7% to 19.0 ± 3.7%) proportional to the intensity of penguins’ impact, accompanied by a decrease in community diversity. Microbial taxa associated with birds’ guts, such as Gottschalkia and Tissierella, emerged in Impacted and Desolated moss banks, along with bacteria likely benefiting from eutrophication. The changes in the functional capacity of the penguin-affected peat microbial communities were also detected. The nitrogen-cycling genes that regulate the conversion of urea into ammonia, nitrite oxide, and nitrate oxide (ureC, amoA, nirS, nosZ, nxrB) had elevated copy numbers in the affected peat. Desolated peat samples exhibit the highest nitrogen-cycle gene numbers, significantly differing from Unaffected peat (p < 0.05). Discussion: The expansion of gentoo penguins induced by climate change led to the replacement of acidophilic microbiomes associated with moss banks, shaping a new microbial community influenced by penguin guano’s chemical and microbial composition.en_US
dc.identifier.citationFrom acidophilic to ornithogenic: microbial community dynamics in moss banks altered by gentoo penguins / Yevheniia Prekrasna-Kviatkovska, Ivan Parnikoza, Anna Yerkhova, Olesia Stelmakh, Mariia Pavlovska, Marta Dzyndra, Oleksandr Yarovyi, Evgen Dykyi // Frontiers in Microbiology. - 2024. - Vol. 15. - Art. no. 1362975. - 16 р. - https://doi.org/10.3389/fmicb.2024.1362975en_US
dc.identifier.issn1664-302X
dc.identifier.urihttps://doi.org/10.3389/fmicb.2024.1362975
dc.identifier.urihttps://ekmair.ukma.edu.ua/handle/123456789/29228
dc.language.isoenen_US
dc.relation.sourceFrontiers in Microbiologyen_US
dc.statusfirst publisheduk_UA
dc.subjectpeat microbial communitiesen_US
dc.subjectclimate changeen_US
dc.subjectornithogenic impacten_US
dc.subjectAntarcticaen_US
dc.subjectmoss banksen_US
dc.subjectarticleen_US
dc.titleFrom acidophilic to ornithogenic: microbial community dynamics in moss banks altered by gentoo penguinsen_US
dc.typeArticleuk_UA
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