Dung application increases CH4 production potential and alters the composition and abundance of methanogen community in restored peatland soils from Europe

Hahn, Juliane; Juottonen, Heli; Fritze, Hannu; Tuittila, Eeva‐Stiina

doi:10.1007/s00374-018-1279-4

Cited by 14 publications

(1 citation statement)

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“…Methanogenesis is an anaerobic decomposition process that forms the terminal step, and is implemented by members of the phylum Euryarchaeota [14,19]. Recently, several studies have concluded that the mcrA gene is an effective phylogenetic marker for exploring methanogens in peatland soil, lake sediment, and natural or constructed wetland [14,[20][21][22]. In wetlands, there are two primary groups of methanogens: acetoclastic methanogens and hydrogenotrophic methanogens [23].…”

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Characteristics and Metabolic Patterns of Soil Methanogenic Archaea Communities in the High Latitude Natural Wetlands of China

Zhao

Bai

et al. 2020

Preprint

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Background: Soil methanogenic microorganisms are one of the primary methane-producing microbes in wetlands. However, we still poorly understand the community characteristic and metabolic patterns of these microorganisms according to vegetation type and seasonal changes. Therefore, to better elucidate the effects of the vegetation type and seasonal factors on the methanogenic community structure and metabolic patterns, we detected the characteristics of the soil methanogenic mcrA gene from three types of natural wetlands in different seasons in the Xiaoxing'an Mountain region, China. Result: The results indicated that the distribution of Methanobacteriaceae (hydrogenotrophic methanogens) was higher in winter, while Methanosarcinaceae and Methanosaetaceae accounted for a higher proportion in summer. Hydrogenotrophic methanogenesis was the dominant trophic pattern in each wetland. The results of principal coordinate analysis and cluster analysis showed that the vegetation type considerably influenced the methanogenic community composition. The methanogenic community structure in the Betula platyphylla – Larix gmelinii wetland was relatively different from the structure of the other two wetland types. Indicator species analysis further demonstrated that the corresponding species of indicator operational taxonomic units from the Alnus sibirica wetland and the Betula ovalifolia wetland were closer. Network analysis showed that cooperative and competitive relationships exist both within and between the same or different trophic methanogens. The core methanogens with higher abundance in each wetland were conducive to adaptation to environmental disturbances. Conclusions: This information is crucial for the assessment of metabolic patterns of soil methanogenic archaea and future fluxes in the wetlands of the Xiaoxing'an Mountain region given their vulnerability.

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