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פותח על ידי קלירמאש פתרונות בע"מ -
Spatial and temporal diversity and abundance of ammonia oxidizers in semi-arid and arid soils: Indications for a differential seasonal effect on archaeal and bacterial ammonia oxidizers
Year:
2013
Source of publication :
FEMS Microbiology Ecology
Authors :
צעדי, אלי
;
.
Volume :
86
Co-Authors:
Sher, Y., Department of Environmental Hydrology and Microbiology, Zuckerberg Institute for Water Research, Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Sede Boqer, Israel
Zaady, E., Department of Natural Resources, Gilat Research Center, Agriculture Research Organization, Mobile Post Negev, Israel
Nejidat, A., Department of Environmental Hydrology and Microbiology, Zuckerberg Institute for Water Research, Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Sede Boqer, Israel
Facilitators :
From page:
544
To page:
556
(
Total pages:
13
)
Abstract:
Besides water, nitrogen is the limiting factor for biomass production in arid ecosystems. Global climatic changes are exacerbating aridity levels, and the response of nitrogen-transforming microorganisms to these changes is not clear yet. Using semi-arid and arid ecosystems as surrogates for conditions of increased aridity, we investigated the activity, abundance, and diversity of ammonia-oxidizing bacteria (AOB) and archaea (AOA) in arid and semi-arid soils. Ammonia oxidation potentials were higher during the winter in both sites than in the summer, and higher nitrate concentrations were measured in the arid soil than in the semi-arid soil. Denaturing gradient gel electrophoresis (DGGE) patterns of AOB 16S rRNA gene fragments were similar for the arid and semi-arid soils with no seasonal variations. In contrast, the DGGE patterns of the AOA amoA gene fragments differed between the sites and a soil transfer experiment suggested that these differences are possibly associated with soil type. AOB numbers were higher during the winter than in the summer, while AOA numbers were higher during the summer. The results indicate the resistance of AOB and AOA community structure to arid conditions, albeit with seasonal variations in their abundance. Together, the results suggest the resilience of nitrification activity to increased aridity level. © 2013 Federation of European Microbiological Societies.
Note:
Related Files :
bacteria
Biomass
Gene
Genetics
Israel
metabolism
oxidation
עוד תגיות
תוכן קשור
More details
DOI :
10.1111/1574-6941.12180
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
28648
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:40
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Scientific Publication
Spatial and temporal diversity and abundance of ammonia oxidizers in semi-arid and arid soils: Indications for a differential seasonal effect on archaeal and bacterial ammonia oxidizers
86
Sher, Y., Department of Environmental Hydrology and Microbiology, Zuckerberg Institute for Water Research, Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Sede Boqer, Israel
Zaady, E., Department of Natural Resources, Gilat Research Center, Agriculture Research Organization, Mobile Post Negev, Israel
Nejidat, A., Department of Environmental Hydrology and Microbiology, Zuckerberg Institute for Water Research, Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Sede Boqer, Israel
Spatial and temporal diversity and abundance of ammonia oxidizers in semi-arid and arid soils: Indications for a differential seasonal effect on archaeal and bacterial ammonia oxidizers
Besides water, nitrogen is the limiting factor for biomass production in arid ecosystems. Global climatic changes are exacerbating aridity levels, and the response of nitrogen-transforming microorganisms to these changes is not clear yet. Using semi-arid and arid ecosystems as surrogates for conditions of increased aridity, we investigated the activity, abundance, and diversity of ammonia-oxidizing bacteria (AOB) and archaea (AOA) in arid and semi-arid soils. Ammonia oxidation potentials were higher during the winter in both sites than in the summer, and higher nitrate concentrations were measured in the arid soil than in the semi-arid soil. Denaturing gradient gel electrophoresis (DGGE) patterns of AOB 16S rRNA gene fragments were similar for the arid and semi-arid soils with no seasonal variations. In contrast, the DGGE patterns of the AOA amoA gene fragments differed between the sites and a soil transfer experiment suggested that these differences are possibly associated with soil type. AOB numbers were higher during the winter than in the summer, while AOA numbers were higher during the summer. The results indicate the resistance of AOB and AOA community structure to arid conditions, albeit with seasonal variations in their abundance. Together, the results suggest the resilience of nitrification activity to increased aridity level. © 2013 Federation of European Microbiological Societies.
Scientific Publication
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