The large-scale distribution of ammonia oxidizers in paddy soils is driven by soil pH, geographic distance and climatic factors
Paddy soils distribute widely from temperate to tropical regions, and are characterized by intensive nitrogen fertilization practices in China. Mounting evidence has confirmed the functional importance of ammonia-oxidizing archaea (AOA) and bacteria (AOB) in soil nitrification, but little is known a...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2015-09-01
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| Series: | Frontiers in Microbiology |
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| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fmicb.2015.00938/full |
| _version_ | 1818852879866265600 |
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| author | Hangwei eHu Hangwei eHu Li-mei eZhang Chaolei eYuan Yong eZheng Juntao eWang Deli eChen Jim eHe |
| author_facet | Hangwei eHu Hangwei eHu Li-mei eZhang Chaolei eYuan Yong eZheng Juntao eWang Deli eChen Jim eHe |
| author_sort | Hangwei eHu |
| collection | DOAJ |
| description | Paddy soils distribute widely from temperate to tropical regions, and are characterized by intensive nitrogen fertilization practices in China. Mounting evidence has confirmed the functional importance of ammonia-oxidizing archaea (AOA) and bacteria (AOB) in soil nitrification, but little is known about their biogeographic distribution patterns in paddy ecosystems. Here, we used barcoded pyrosequencing to characterize the effects of climatic, geochemical and spatial factors on the distribution of ammonia oxidizers from 11 representative rice-growing regions (75-1945 km apart) of China. Potential nitrification rates varied greatly by more than three orders of magnitude, and were significantly correlated with the abundances of AOA and AOB. The community composition of ammonia oxidizer was affected by multiple factors, but changes in relative abundances of the major lineages could be best predicted by soil pH. The alpha diversity of AOA and AOB displayed contrasting trends over the gradients of latitude and atmospheric temperature, indicating a possible niche separation between AOA and AOB along the latitude. The Bray-Curtis dissimilarities in ammonia-oxidizing community structure significantly increased with increasing geographical distance, indicating that more geographically distant paddy fields tend to harbor more dissimilar ammonia oxidizers. Variation partitioning analysis revealed that spatial, geochemical and climatic factors could jointly explain majority of the data variation, and were important drivers defining the ecological niches of AOA and AOB. Our findings suggest that both AOA and AOB are of functional importance in paddy soil nitrification, and ammonia oxidizers in paddy ecosystems exhibit large-scale biogeographic patterns shaped by soil pH, geographic distance, and climatic factors. |
| first_indexed | 2024-12-19T07:27:56Z |
| format | Article |
| id | doaj.art-60622ca8a5cb4999b893ab080c84dc2a |
| institution | Directory Open Access Journal |
| issn | 1664-302X |
| language | English |
| last_indexed | 2024-12-19T07:27:56Z |
| publishDate | 2015-09-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Microbiology |
| spelling | doaj.art-60622ca8a5cb4999b893ab080c84dc2a2022-12-21T20:30:47ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2015-09-01610.3389/fmicb.2015.00938159863The large-scale distribution of ammonia oxidizers in paddy soils is driven by soil pH, geographic distance and climatic factorsHangwei eHu0Hangwei eHu1Li-mei eZhang2Chaolei eYuan3Yong eZheng4Juntao eWang5Deli eChen6Jim eHe7Chinese Academy of SciencesThe University of MelbourneChinese Academy of SciencesChinese Academy of SciencesChinese Academy of SciencesChinese Academy of SciencesThe University of MelbourneChinese Academy of SciencesPaddy soils distribute widely from temperate to tropical regions, and are characterized by intensive nitrogen fertilization practices in China. Mounting evidence has confirmed the functional importance of ammonia-oxidizing archaea (AOA) and bacteria (AOB) in soil nitrification, but little is known about their biogeographic distribution patterns in paddy ecosystems. Here, we used barcoded pyrosequencing to characterize the effects of climatic, geochemical and spatial factors on the distribution of ammonia oxidizers from 11 representative rice-growing regions (75-1945 km apart) of China. Potential nitrification rates varied greatly by more than three orders of magnitude, and were significantly correlated with the abundances of AOA and AOB. The community composition of ammonia oxidizer was affected by multiple factors, but changes in relative abundances of the major lineages could be best predicted by soil pH. The alpha diversity of AOA and AOB displayed contrasting trends over the gradients of latitude and atmospheric temperature, indicating a possible niche separation between AOA and AOB along the latitude. The Bray-Curtis dissimilarities in ammonia-oxidizing community structure significantly increased with increasing geographical distance, indicating that more geographically distant paddy fields tend to harbor more dissimilar ammonia oxidizers. Variation partitioning analysis revealed that spatial, geochemical and climatic factors could jointly explain majority of the data variation, and were important drivers defining the ecological niches of AOA and AOB. Our findings suggest that both AOA and AOB are of functional importance in paddy soil nitrification, and ammonia oxidizers in paddy ecosystems exhibit large-scale biogeographic patterns shaped by soil pH, geographic distance, and climatic factors.http://journal.frontiersin.org/Journal/10.3389/fmicb.2015.00938/fullthaumarchaeotaMicrobial biogeographyspatial distributionAmmonia OxidizersPaddy soilsNiche separation |
| spellingShingle | Hangwei eHu Hangwei eHu Li-mei eZhang Chaolei eYuan Yong eZheng Juntao eWang Deli eChen Jim eHe The large-scale distribution of ammonia oxidizers in paddy soils is driven by soil pH, geographic distance and climatic factors Frontiers in Microbiology thaumarchaeota Microbial biogeography spatial distribution Ammonia Oxidizers Paddy soils Niche separation |
| title | The large-scale distribution of ammonia oxidizers in paddy soils is driven by soil pH, geographic distance and climatic factors |
| title_full | The large-scale distribution of ammonia oxidizers in paddy soils is driven by soil pH, geographic distance and climatic factors |
| title_fullStr | The large-scale distribution of ammonia oxidizers in paddy soils is driven by soil pH, geographic distance and climatic factors |
| title_full_unstemmed | The large-scale distribution of ammonia oxidizers in paddy soils is driven by soil pH, geographic distance and climatic factors |
| title_short | The large-scale distribution of ammonia oxidizers in paddy soils is driven by soil pH, geographic distance and climatic factors |
| title_sort | large scale distribution of ammonia oxidizers in paddy soils is driven by soil ph geographic distance and climatic factors |
| topic | thaumarchaeota Microbial biogeography spatial distribution Ammonia Oxidizers Paddy soils Niche separation |
| url | http://journal.frontiersin.org/Journal/10.3389/fmicb.2015.00938/full |
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