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פותח על ידי קלירמאש פתרונות בע"מ -
Assessment of the spatial distribution of soil microbial communities in patchy arid and semi-arid landscapes of the Negev Desert using combined PLFA and DGGE analyses
Year:
2011
Source of publication :
FEMS Microbiology Ecology
Authors :
צעדי, אלי
;
.
Volume :
76
Co-Authors:
Ben-David, E.A., Department of Environmental Hydrology and Microbiology, Zukerberg Inst. for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Midreshet Ben-Gurion, South Korea
Zaady, E., Department of Natural Resources, Gilat Research Center, Agriculture Research Organization, Mobile Post Negev, Israel
Sher, Y., Department of Environmental Hydrology and Microbiology, Zukerberg Inst. for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Midreshet Ben-Gurion, South Korea
Nejidat, A., Department of Environmental Hydrology and Microbiology, Zukerberg Inst. for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Midreshet Ben-Gurion, South Korea
Facilitators :
From page:
492
To page:
503
(
Total pages:
12
)
Abstract:
Arid and semi-arid ecosystems are often characterized by vegetation patchiness and variable availability of resources. Phospholipid fatty acid (PLFA) and 16S rRNA gene fragment analyses were used to compare the bulk soil microbial community structure at patchy arid and semi-arid landscapes. Multivariate analyses of the PLFA data and the 16S rRNA gene fragments were in agreement with each other, suggesting that the differences between bulk soil microbial communities were primarily related to shrub vs intershrub patches, irrespective of climatic or site differences. This suggests that the mere presence of a living shrub is the dominant driving factor for the differential adaptation of the microbial communities. Lipid markers suggested as indicators of Gram-positive bacteria were higher in soils under the shrub canopies, while markers suggested as indicators of cyanobacteria and anaerobic bacteria were elevated in the intershrub soils. Secondary differences between soil microbial communities were associated with intershrub characteristics and to a lesser extent with the shrub species. This study provides an insight into the multifaceted nature of the factors that shape the microbial community structure in patchy desert landscapes. It further suggests that these drivers not only act in concert but also in a way that is dependent on the aridity level. © 2011 Federation of European Microbiological Societies.
Note:
Related Files :
Biomass
fatty acids
Genetics
Growth, Development and Aging
Israel
Microbiology
Negev
soil
עוד תגיות
תוכן קשור
More details
DOI :
10.1111/j.1574-6941.2011.01075.x
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
31727
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:04
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Scientific Publication
Assessment of the spatial distribution of soil microbial communities in patchy arid and semi-arid landscapes of the Negev Desert using combined PLFA and DGGE analyses
76
Ben-David, E.A., Department of Environmental Hydrology and Microbiology, Zukerberg Inst. for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Midreshet Ben-Gurion, South Korea
Zaady, E., Department of Natural Resources, Gilat Research Center, Agriculture Research Organization, Mobile Post Negev, Israel
Sher, Y., Department of Environmental Hydrology and Microbiology, Zukerberg Inst. for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Midreshet Ben-Gurion, South Korea
Nejidat, A., Department of Environmental Hydrology and Microbiology, Zukerberg Inst. for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Midreshet Ben-Gurion, South Korea
Assessment of the spatial distribution of soil microbial communities in patchy arid and semi-arid landscapes of the Negev Desert using combined PLFA and DGGE analyses
Arid and semi-arid ecosystems are often characterized by vegetation patchiness and variable availability of resources. Phospholipid fatty acid (PLFA) and 16S rRNA gene fragment analyses were used to compare the bulk soil microbial community structure at patchy arid and semi-arid landscapes. Multivariate analyses of the PLFA data and the 16S rRNA gene fragments were in agreement with each other, suggesting that the differences between bulk soil microbial communities were primarily related to shrub vs intershrub patches, irrespective of climatic or site differences. This suggests that the mere presence of a living shrub is the dominant driving factor for the differential adaptation of the microbial communities. Lipid markers suggested as indicators of Gram-positive bacteria were higher in soils under the shrub canopies, while markers suggested as indicators of cyanobacteria and anaerobic bacteria were elevated in the intershrub soils. Secondary differences between soil microbial communities were associated with intershrub characteristics and to a lesser extent with the shrub species. This study provides an insight into the multifaceted nature of the factors that shape the microbial community structure in patchy desert landscapes. It further suggests that these drivers not only act in concert but also in a way that is dependent on the aridity level. © 2011 Federation of European Microbiological Societies.
Scientific Publication
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