Northern peatland microbial networks exhibit resilience to warming and acquire electron acceptor from soil organic matter DOI
Katherine Duchesneau, Borja Aldeguer‐Riquelme, Caitlin Petro

и другие.

Опубликована: Июль 17, 2024

Abstract The microbial networks that regulate belowground carbon turnover and respond to climate change drivers in peatlands are poorly understood. Here, we leverage a whole ecosystem warming experiment elucidate the key processes of terminal decomposition community responses temperature rise. Our dataset 697 metagenome-assembled genomes (MAGs) extends from surface (10 cm) 2 m deep into peat column, with only 3.7% overlapping other well-studied peatlands. Unexpectedly, composition has yet show significant response after 3 years, suggesting metabolically diverse soil resilient change. Surprisingly, dominant methanogens showed potential for both acetoclastic hydrogenotrophic methanogenesis. Nonetheless, predominant pathways anaerobic include sulfate/sulfite reduction, denitrification, acetogenesis, rather than methanogenesis based on gene abundances. Multi-omics data suggest organic matter cleavage provides electron acceptors, whichtogether methanogen metabolic flexibility, may explain microbiome resilience warming.

Язык: Английский

Peatland Plant Community Changes in Annual Production and Composition Through 8 Years of Warming Manipulations Under Ambient and Elevated CO2 Atmospheres DOI Creative Commons
Paul J. Hanson, Natalie A. Griffiths, Verity Salmon

и другие.

Journal of Geophysical Research Biogeosciences, Год журнала: 2025, Номер 130(2)

Опубликована: Фев. 1, 2025

Abstract The Spruce and Peatland Responses Under Changing Environments (SPRUCE) experiment has operated five whole‐ecosystem warming manipulations (+0, +2.25, +4.5, +6.75, +9°C) with paired ambient elevated CO 2 atmospheres (eCO , +500 ppm) for 8 full calendar years (since August 2015). We tracked shrub‐layer vegetation responses to the treatments using annual destructive plot sampling. Tree ( Picea Larix ) were assessed annually nondestructive dimensional analyses allometric conversions. Shrub community changes key ericaceous shrubs Rhododendron, Chamaedaphne, Kalmia ), two Vaccinium species V. angustifolium, oxycoccos graminoid (mostly Eriophorum one common forb Maianthemum trifolium plus minor understory species. aboveground net primary production (ANPP) vascular plant in gC m −2 y −1 overall stand contribution dry mass. observed a linear increase biomass accumulation over time due primarily an shrub abundance. Cumulative increases across showed positive eCO after years. Community composition also changed warming, woody density, reduction or loss of forbs. tree minimal initial early treatments, but since 2020, shown significant ANPP individual growth warming. main driver change was temperature, less pronounced effects evident. These results indicate from both layers peatland vegetation.

Язык: Английский

Процитировано

0
Plant–microbiome interactions and their impacts on plant adaptation to climate change DOI Open Access
Qing Zeng, Hang‐Wei Hu, An‐Hui Ge

и другие.

Journal of Integrative Plant Biology, Год журнала: 2025, Номер unknown

Опубликована: Фев. 21, 2025

ABSTRACT Plants have co‐evolved with a wide range of microbial communities over hundreds millions years, this has drastically influenced their adaptation to biotic and abiotic stress. The rapid development multi‐omics approaches greatly improved our understanding the diversity, composition, functions plant microbiomes, but how global climate change affects assembly microbiomes roles in regulating host changing environmental conditions is not fully known. In review, we summarize recent advancements community responses factors such as elevated CO 2 levels, warming, drought. We further delineate research trends hotspots plant–microbiome interactions context change, key mechanisms by which influence climate. propose that future urgently needed unravel impact genes signal molecules modulated on communities, elucidate evolutionary response plant–microbe at level, engineer synthetic mitigate effects fitness.

Язык: Английский

Процитировано

0
Estimating fine-root production in three forestry-drained boreal peatlands dominated by Downy birch ( Betula pubescens Ehrh.) DOI Creative Commons
Md. Rezaul Karim, Jani Anttila, Katja T. Rinne‐Garmston

и другие.

Scandinavian Journal of Forest Research, Год журнала: 2025, Номер unknown, С. 1 - 9

Опубликована: Апрель 15, 2025

Язык: Английский

Процитировано

0
Northern peatland microbial networks exhibit resilience to warming and acquire electron acceptor from soil organic matter DOI
Katherine Duchesneau, Borja Aldeguer‐Riquelme, Caitlin Petro

и другие.

Опубликована: Июль 17, 2024

Abstract The microbial networks that regulate belowground carbon turnover and respond to climate change drivers in peatlands are poorly understood. Here, we leverage a whole ecosystem warming experiment elucidate the key processes of terminal decomposition community responses temperature rise. Our dataset 697 metagenome-assembled genomes (MAGs) extends from surface (10 cm) 2 m deep into peat column, with only 3.7% overlapping other well-studied peatlands. Unexpectedly, composition has yet show significant response after 3 years, suggesting metabolically diverse soil resilient change. Surprisingly, dominant methanogens showed potential for both acetoclastic hydrogenotrophic methanogenesis. Nonetheless, predominant pathways anaerobic include sulfate/sulfite reduction, denitrification, acetogenesis, rather than methanogenesis based on gene abundances. Multi-omics data suggest organic matter cleavage provides electron acceptors, whichtogether methanogen metabolic flexibility, may explain microbiome resilience warming.

Язык: Английский

Процитировано

0