Long-term warming in a Mediterranean-type grassland affects soil bacterial functional potential but not bacterial taxonomic composition.
Archaea
/ genetics
Bacteria
/ classification
Carbon
/ metabolism
Fungi
/ genetics
Gene Expression Profiling
Genes, Archaeal
Genes, Bacterial
Genes, Fungal
Global Warming
Grassland
High-Throughput Nucleotide Sequencing
Nitrogen
/ metabolism
Oligonucleotide Array Sequence Analysis
Phylogeny
RNA, Ribosomal, 16S
/ genetics
Sequence Analysis, RNA
/ methods
Soil Microbiology
Journal
NPJ biofilms and microbiomes
ISSN: 2055-5008
Titre abrégé: NPJ Biofilms Microbiomes
Pays: United States
ID NLM: 101666944
Informations de publication
Date de publication:
08 02 2021
08 02 2021
Historique:
received:
05
12
2019
accepted:
07
01
2021
entrez:
9
2
2021
pubmed:
10
2
2021
medline:
23
9
2021
Statut:
epublish
Résumé
Climate warming is known to impact ecosystem composition and functioning. However, it remains largely unclear how soil microbial communities respond to long-term, moderate warming. In this study, we used Illumina sequencing and microarrays (GeoChip 5.0) to analyze taxonomic and functional gene compositions of the soil microbial community after 14 years of warming (at 0.8-1.0 °C for 10 years and then 1.5-2.0 °C for 4 years) in a Californian grassland. Long-term warming had no detectable effect on the taxonomic composition of soil bacterial community, nor on any plant or abiotic soil variables. In contrast, functional gene compositions differed between warming and control for bacterial, archaeal, and fungal communities. Functional genes associated with labile carbon (C) degradation increased in relative abundance in the warming treatment, whereas those associated with recalcitrant C degradation decreased. A number of functional genes associated with nitrogen (N) cycling (e.g., denitrifying genes encoding nitrate-, nitrite-, and nitrous oxidereductases) decreased, whereas nifH gene encoding nitrogenase increased in the warming treatment. These results suggest that microbial functional potentials are more sensitive to long-term moderate warming than the taxonomic composition of microbial community.
Identifiants
pubmed: 33558544
doi: 10.1038/s41522-021-00187-7
pii: 10.1038/s41522-021-00187-7
pmc: PMC7870951
doi:
Substances chimiques
RNA, Ribosomal, 16S
0
Carbon
7440-44-0
Nitrogen
N762921K75
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.
Langues
eng
Sous-ensembles de citation
IM
Pagination
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