التفاصيل البيبلوغرافية
| العنوان: |
The activity and functions of soil microbial communities in the Finnish sub-Arctic vary across vegetation types |
| المؤلفون: |
Viitamaki, Sirja, Pessi, Igor S., Virkkala, Anna-Maria, Niittynen, Pekka, Kemppinen, Julia, Eronen-Rasimus, Eeva, Luoto, Miska, Hultman, Jenni |
| المساهمون: |
Arctic Microbial Ecology, Department of Microbiology, Helsinki Institute of Sustainability Science (HELSUS), BioGeoClimate Modelling Lab, Department of Geosciences and Geography |
| بيانات النشر: |
Oxford University Press |
| سنة النشر: |
2022 |
| المجموعة: |
Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto |
| مصطلحات موضوعية: |
climate change, microbial communities, microbial ecology, transcriptomics, tundra, SP NOV, RIBOSOMAL-RNA, GEN. NOV, BACTERIAL COMMUNITIES, PERMAFROST, ACIDOBACTERIA, 11832 Microbiology and virology, Ecology, evolutionary biology |
| الوصف: |
Due to climate change, increased microbial activity in high-latitude soils may lead to higher greenhouse gas (GHG) emissions. However, microbial GHG production and consumption mechanisms in tundra soils are not thoroughly understood. To investigate how the diversity and functional potential of bacterial and archaeal communities vary across vegetation types and soil layers, we analyzed 116 soil metatranscriptomes from 73 sites in the Finnish sub-Arctic. Meadow soils were characterized by higher pH and lower soil organic matter (SOM) and carbon/nitrogen ratio. By contrast, dwarf shrub-dominated ecosystems had higher SOM and lower pH. Although Actinobacteria, Acidobacteria, Alphaproteobacteria and Planctomycetes were dominant in all communities, there were significant differences at the genus level between vegetation types; plant polymer-degrading groups were more active in shrub-dominated soils than in meadows. Given that climate-change scenarios predict the expansion of shrubs at high latitudes, our results indicate that tundra soil microbial communities harbor potential decomposers of increased plant litter, which may affect the rate of carbon turnover in tundra soils. Additionally, transcripts of methanotrophs were detected in the mineral layer of all soils, which may moderate methane fluxes. This study provides new insights into possible shifts in tundra microbial diversity and activity due to climate change. Active microbial communities were significantly different in the organic and mineral soil layers and the communities differed significantly between four different vegetation types both in the organic and mineral layers. ; Peer reviewed |
| نوع الوثيقة: |
article in journal/newspaper |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| Relation: |
The study was funded by the Academy of Finland (Grant no. 1314114) and the University of Helsinki's three-year grant to JH. SV was funded by the Doctoral Program in Microbiology and Biotechnology (MBDP). PN was funded by Kone Foundation and Nessling Foundation. JK was funded by the Arctic Interactions at the University of Oulu and Academy of Finland (Grant no. 318930, Profi 4). AMV acknowledges the Gordon and Betty Moore Foundation (Grant 8414).; Viitamaki , S , Pessi , I S , Virkkala , A-M , Niittynen , P , Kemppinen , J , Eronen-Rasimus , E , Luoto , M & Hultman , J 2022 , ' The activity and functions of soil microbial communities in the Finnish sub-Arctic vary across vegetation types ' , FEMS Microbiology Ecology , vol. 98 , no. 8 , 079 . https://doi.org/10.1093/femsec/fiac079; ORCID: /0000-0001-6203-5143/work/117172682; ORCID: /0000-0003-4877-2918/work/117175863; ORCID: /0000-0002-7290-029X/work/117175916; ORCID: /0000-0002-2427-6162/work/117176143; ORCID: /0000-0001-7521-7229/work/117176224; ORCID: /0000-0001-5926-7496/work/157598528; http://hdl.handle.net/10138/346872; a4bce6eb-1429-41cf-828f-8abaf8c07471; 85136314151; 000834364900001 |
| الاتاحة: |
http://hdl.handle.net/10138/346872 |
| Rights: |
cc_by ; info:eu-repo/semantics/openAccess ; openAccess |
| رقم الانضمام: |
edsbas.93CB804C |
| قاعدة البيانات: |
BASE |