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Biogeography of soil archaea and bacteria along a steep precipitation gradient
Year:
2010
Source of publication :
ISME Journal
Authors :
Ungar, Eugene David
;
.
Volume :
4
Co-Authors:
Angel, R., Zuckerberg Institute for Water Research, Ben-Gurion University, J. Blaustein Institutes for Desert Research, Sede Boqer Campus 84990, Israel, Max-Planck-Institute for Terrestrial Microbiology, Karl-von-Frisch-Strasse 8, Marburg, D-35043, Germany
Soares, M.I.M., Zuckerberg Institute for Water Research, Ben-Gurion University, J. Blaustein Institutes for Desert Research, Sede Boqer Campus 84990, Israel
Ungar, E.D., Department of Agronomy and Natural Resources, Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan, Israel
Gillor, O., Zuckerberg Institute for Water Research, Ben-Gurion University, J. Blaustein Institutes for Desert Research, Sede Boqer Campus 84990, Israel
Facilitators :
From page:
553
To page:
563
(
Total pages:
11
)
Abstract:
For centuries, biodiversity has spellbound biologists focusing mainly on macroorganism's diversity and almost neglecting the geographic mediated dynamics of microbial communities. We surveyed the diversity of soil bacteria and archaea along a steep precipitation gradient ranging from the Negev Desert in the south of Israel (<100 mm annual rain) to the Mediterranean forests in the north (>900 mm annual rain). Soil samples were retrieved from triplicate plots at five long-term ecological research stations, collected from two types of patches: plant interspaces and underneath the predominant perennial at each site. The molecular fingerprint of each soil sample was taken using terminal restriction length polymorphism of the 16S rRNA gene to evaluate the bacterial and archaeal community composition and diversity within and across sites. The difference in community compositions was not statistically significant within sites (P=0.33 and 0.77 for bacteria and archaea, respectively), but it differed profoundly by ecosystem type. These differences could largely be explained by the precipitation gradient combined with the vegetation cover: the archaeal and bacterial operational taxonomic units were unique to each climatic region, that is, arid, semiarid and Mediterranean (P=0.0001, for both domains), as well as patch type (P=0.009 and 0.02 for bacteria and archaea, respectively). Our results suggest that unlike macroorganisms that are more diverse in the Mediterranean ecosystems compared with the desert sites, archaeal and bacterial diversities are not constrained by precipitation. However, the community composition is unique to the climate and vegetation cover that delineates each ecosystem. © 2010 International Society for Microbial Ecology. All Rights Reserved.
Note:
Related Files :
arid region
bacteria
biodiversity
Genetics
Israel
Mediterranean Region
Microbiology
molecular analysis
Negev
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More details
DOI :
10.1038/ismej.2009.136
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
22674
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:53
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Scientific Publication
Biogeography of soil archaea and bacteria along a steep precipitation gradient
4
Angel, R., Zuckerberg Institute for Water Research, Ben-Gurion University, J. Blaustein Institutes for Desert Research, Sede Boqer Campus 84990, Israel, Max-Planck-Institute for Terrestrial Microbiology, Karl-von-Frisch-Strasse 8, Marburg, D-35043, Germany
Soares, M.I.M., Zuckerberg Institute for Water Research, Ben-Gurion University, J. Blaustein Institutes for Desert Research, Sede Boqer Campus 84990, Israel
Ungar, E.D., Department of Agronomy and Natural Resources, Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan, Israel
Gillor, O., Zuckerberg Institute for Water Research, Ben-Gurion University, J. Blaustein Institutes for Desert Research, Sede Boqer Campus 84990, Israel
Biogeography of soil archaea and bacteria along a steep precipitation gradient
For centuries, biodiversity has spellbound biologists focusing mainly on macroorganism's diversity and almost neglecting the geographic mediated dynamics of microbial communities. We surveyed the diversity of soil bacteria and archaea along a steep precipitation gradient ranging from the Negev Desert in the south of Israel (<100 mm annual rain) to the Mediterranean forests in the north (>900 mm annual rain). Soil samples were retrieved from triplicate plots at five long-term ecological research stations, collected from two types of patches: plant interspaces and underneath the predominant perennial at each site. The molecular fingerprint of each soil sample was taken using terminal restriction length polymorphism of the 16S rRNA gene to evaluate the bacterial and archaeal community composition and diversity within and across sites. The difference in community compositions was not statistically significant within sites (P=0.33 and 0.77 for bacteria and archaea, respectively), but it differed profoundly by ecosystem type. These differences could largely be explained by the precipitation gradient combined with the vegetation cover: the archaeal and bacterial operational taxonomic units were unique to each climatic region, that is, arid, semiarid and Mediterranean (P=0.0001, for both domains), as well as patch type (P=0.009 and 0.02 for bacteria and archaea, respectively). Our results suggest that unlike macroorganisms that are more diverse in the Mediterranean ecosystems compared with the desert sites, archaeal and bacterial diversities are not constrained by precipitation. However, the community composition is unique to the climate and vegetation cover that delineates each ecosystem. © 2010 International Society for Microbial Ecology. All Rights Reserved.
Scientific Publication
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