Ciliophora

Lynn, Denis H.

doi:10.1007/978-3-319-32669-6_23-1

Cited by 1 publication

(1 citation statement)

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“…Fifteen species with statistically significant differences were identified in the two environmental media, with 5 and 10 taxa significantly enriched in surface water and sediment, respectively. Ciliophora was found in freshwater in a planktonic state for most times of the year [78], which may account for the greater abundance of Ciliophora in surface water in our study. The significant enrichment of Synergistetes in the sediment may be related to its environmental characteristics for anaerobic existence [79].…”

Section: Nitrogen Transformation Functional Microorganisms and Their ...mentioning

confidence: 57%

Differences of Nitrogen Transformation Pathways and Their Functional Microorganisms in Water and Sediment of a Seasonally Frozen Lake, China

Tian

Sheng

et al. 2023

Water

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Nitrogen is one of the most important elements involved in ecosystem biogeochemical cycling. However, little is known about the characteristics of nitrogen cycling during the ice-covered period in seasonally frozen lakes. In this study, shotgun metagenomic sequencing of subglacial water and sediment from Lake Ulansuhai was performed to identify and compare nitrogen metabolism pathways and microbes involved in these pathways. In total, ammonia assimilation was the most prominent nitrogen transformation pathway, and Bacteria and Proteobacteria (at the domain and phylum levels, respectively) were the most abundant portion of microorganisms involved in nitrogen metabolism. Gene sequences devoted to nitrogen fixation, nitrification, denitrification, dissimilatory nitrate reduction to ammonium, and ammonia assimilation were significantly higher in sediment than in surface and subsurface water. In addition, 15 biomarkers of nitrogen-converting microorganisms, such as Ciliophora and Synergistetes, showed significant variation between sampling levels. The findings of the present study improve our understanding of the nitrogen cycle in seasonally frozen lakes.

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Section: Nitrogen Transformation Functional Microorganisms and Their ...mentioning

confidence: 57%