Spatial distribution of archaeal and bacterial ammonia oxidizers in the littoral buffer zone of a nitrogen-rich lake

Wang, Yu; Zhu, Guibing; Ye, Lei; Feng, Xiaojuan; Camp, Huub J. M. Op den; Yin, Chengqing

doi:10.1016/s1001-0742(11)60861-9

Cited by 33 publications

(16 citation statements)

References 44 publications

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“…The effect of plant rhizosphere on AOA and AOB abundance remain inconclusive based on previous studies . In this study, we found that the B amo A/A amo A ratios were higher on root surfaces than in bulk soil of most samples in summer, which was similar with the result from Trias et al .…”

Section: Discussionsupporting

confidence: 91%

Factors driving the distribution and role of AOA and AOB in Phragmites communis rhizosphere in riparian zone

Wang

Shi

et al. 2019

J Basic Microbiol

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Ammonia oxidation, mainly driven by ammonia‐oxidizing archaea (AOA) and bacteria (AOB), plays an important role in determining the rate of nitrification in riparian zones. However, the underlying factors driving the distribution and activity of AOA and AOB in riparian zones, especially in the rhizosphere of Phragmites communis remain unknown. This study revealed the dominance of AOA in ammonium oxidization with higher abundance and activity in both rhizosphere and bulk soil in summer and winter over AOB in riparian zones, based on molecular methods and double‐inhibitors method. Phylogenetic analysis showed that 54d9 cluster and Nitrososphaera dominated the AOA community and Nitrosospira dominated the AOB, respectively. For the distribution of AOA and AOB, it was the spatial heterogeneity of physicochemical properties that had the most significant effect. Specifically, TOM & TC were the main physicochemical variables accounting for the difference in abundance and community composition of AOA, and TN had an important influence on AOB in the sediment/soil in riparian zones. For abundance and activity, seasonal heterogeneity and P. communis rhizosphere had a significant impact on the archaeal activity and abundance, respectively, but did not show significant influencing on AOB. These findings suggest that the small‐scale environmental heterogeneities in riparian zones are important in shaping the community composition and abundance of AOA and AOB.

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Section: Discussionsupporting

confidence: 91%

Factors driving the distribution and role of AOA and AOB in Phragmites communis rhizosphere in riparian zone

Wang

Shi

et al. 2019

J Basic Microbiol

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“…However, other researchers observed that AOB outnumbered AOA in nitrogen-rich sediments and in agricultural soils (Jia & Conrad, 2009;Wang et al, 2011;Wang et al, 2012). In this study, we found that AOA were much more abundant than AOB (by two or three orders of magnitude) and played an important role in ammonia oxidation.…”

Section: Discussioncontrasting

confidence: 41%

“…Previous studies reported that AOA was the dominant taxon among the ammonia‐oxidizing prokaryotes in soils and marine ecosystems with low ammonium concentrations (Leininger et al., ; Wuchter et al., ). However, other researchers observed that AOB outnumbered AOA in nitrogen‐rich sediments and in agricultural soils (Jia & Conrad, ; Wang et al., ; Wang et al., ). In this study, we found that AOA were much more abundant than AOB (by two or three orders of magnitude) and played an important role in ammonia oxidation.…”

Section: Discussionmentioning

confidence: 89%

Occurrence and abundance of ammonia‐oxidizing archaea and bacteria from the surface to below the water table, in deep soil, and their contributions to nitrification

et al. 2017

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Using molecular biology methods (qualitative and quantitative PCR), we determined the occurrence and abundance of ammonia‐oxidizing archaea (AOA) and ammonia‐oxidizing bacteria (AOB) from a dry inland soil in Basel, Switzerland, and from the riparian zone of Baiyangdian Lake, China. We also determined the contributions of these microorganisms to ammonia oxidization at different depths based on the nitrification rate. The number of archaeal amoA genes (the key functional gene in AOA) was larger than the number of bacterial amoA genes in each sample, suggesting a dominant role for the AOA amoA gene in environments with a low ammonium concentration. In Baiyangdian Lake, the number of archaeal amoA genes was highest at 6 m and lowest at 12 m from the land–water interface in the soil (at depths from 40 to 60 cm), close to the groundwater, which suggests that AOA become more competitive in environments with a low dissolved oxygen content and are promoted by low pH. The nitrification rate was significantly negatively correlated with depth in the Baiyangdian Lake soil and significantly positively correlated with the number of AOB amoA genes at this site, 6 m from the water.

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“…The boundary or ecotone between two features in a landscape, for example the land/freshwater interface, is often the biogeochemical hot spot (McClain et al ., ; Wang et al ., ,c; Zhu et al ., ). Rice paddy fields are dry‐wet alternation ecosystems, resulting in the soil/water ecotones which are ideal environments for soil microorganisms (Ishii et al ., ).…”

Section: Introductionmentioning

confidence: 99%

High abundance and diversity of nitrite-dependent anaerobic methane-oxidizing bacteria in a paddy field profile

Zhou

Wang

Long

et al. 2014

FEMS Microbiol Lett

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The discovery of nitrite-dependent anaerobic methane oxidation (n-damo) mediated by 'Candidatus Methylomirabilis oxyfera' with nitrite and methane as substrates has connected biogeochemical carbon and nitrogen cycles in a new way. The paddy fields often carry substantial methane and nitrate, thus may be a favorable habitat for n-damo bacteria. In this paper, the vertical-temporal molecular fingerprints of M. oxyfera-like bacteria, including abundance and community composition, were investigated in a paddy soil core in Jiangyin, near the Yangtze River. Through qPCR investigation, high abundance of M. oxyfera-like bacteria up to 1.0 × 10(8) copies (g d.w.s.)(-1) in summer and 8.5 × 10(7) copies (g d.w.s.)(-1) in winter was observed in the ecotone of soil and groundwater in the paddy soil core, which was the highest in natural environments to our knowledge. In the ecotone, the ratio of M. oxyfera-like bacteria to total bacteria reached peak values of 2.80% in summer and 4.41% in winter. Phylogenetic analysis showed n-damo bacteria in the paddy soil were closely related to M. oxyfera and had high diversity in the soil/groundwater ecotone. All of the results indicated the soil/groundwater ecotone of the Jiangyin paddy field was a favorable environment for the growth of n-damo bacteria.

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Spatial distribution of archaeal and bacterial ammonia oxidizers in the littoral buffer zone of a nitrogen-rich lake

Cited by 33 publications

References 44 publications

Factors driving the distribution and role of AOA and AOB in Phragmites communis rhizosphere in riparian zone

Factors driving the distribution and role of AOA and AOB in Phragmites communis rhizosphere in riparian zone

Occurrence and abundance of ammonia‐oxidizing archaea and bacteria from the surface to below the water table, in deep soil, and their contributions to nitrification

High abundance and diversity of nitrite-dependent anaerobic methane-oxidizing bacteria in a paddy field profile

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