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| DOI: | 10.1128/AEM.00844-16 |
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| Web URL(s): | http://aem.asm.org/content/82/15/4592.full.pdf
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http://aem.asm.org/content/82/15/4592.full
Last checked: 07/13/2017
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | van der Walt, Andries J.;
Johnson, Riegardt M.;
Cowan, Don A.;
Seely, Mary;
Ramond, Jean-Baptiste |
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| Author Affiliation: | van der Walt, Johnson, Cowan, and Ramond: Centre for Microbial Ecology and Genomics (CMEG), Genomics Research Institute, Department of Genetics, University of Pretoria, Pretoria, South Africa; Seely: Gobabeb Research and Training Centre, Walvis Bay, Namibia and School of Animal, Plant and Environment Sciences (AP&ES), University of the Witwatersrand, Johannesburg, South Africa |
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| Title: | Unique microbial phylotypes in Namib Desert Dune and gravel plain fairy circle soils |
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| Section: | Microbial ecology
Other records with the "Microbial ecology" Section
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| Source: | Applied and Environmental Microbiology. Vol. 82, No. 15, August 2016, p. 4592-4601. |
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| Publishing Information: | Washington, D.C.: American Society for Microbiology |
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| # of Pages: | 10 |
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| Related Web URL: | http://aem.asm.org/content/suppl/2016/07/06/AEM.00844-16.DCSupplemental/zam999117298so1.pdf
Last checked: 07/13/2017
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Notes: Supplementary file
http://aem.asm.org/content/82/15/4592.abstract
Last checked: 07/18/2017
Notes: Abstract only |
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| Keywords: | TIC Keywords: Disease evaluation; Disease incidence; Disease profile; Dune soils; Fairy rings; Gravelly soils; Microbiological soil analysis; Phylogenetic analysis
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| Geographic Terms: | Namib Desert, Namibia, Africa |
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| Abstract/Contents: | "Fairy circles (FCs) are barren circular patches of soil surrounded by grass species. Their origin is poorly understood. FCs feature in both the gravel plains and the dune fields of the Namib Desert. While a substantial number of hypotheses to explain the origin and/or maintenance of fairy circles have been presented, none are completely consistent with either their properties or their distribution. In this study, we investigated the hypothesis that FC formation in dunes and gravel plains is due to microbial phytopathogenesis. Surface soils from five gravel plain and five dune FCs, together with control soil samples, were analyzed using high-throughput sequencing of bacterial/archaeal (16S rRNA gene) and fungal (internal transcribed spacer [ITS] region) phylogenetic markers. Our analyses showed that gravel plain and dune FC microbial communities are phylogenetically distinct and that FC communities differ from those of adjacent vegetated soils. Furthermore, various soil physicochemical properties, particularly the pH, the Ca, P, Na, and SO4 contents, the soil particle size, and the percentage of carbon, significantly influenced the compositions of dune and gravel plain FC microbial communities, but none were found to segregate FC and vegetated soil communities. Nevertheless, 9 bacterial, 1 archaeal, and 57 fungal phylotypes were identified as FC specific, since they were present within the gravel plain and dune FC soils only, not in the vegetated soils. Some of these FC-specific phylotypes were assigned to taxa known to harbor phytopathogenic microorganisms. This suggests that these FC-specific microbial taxa may be involved in the formation and/or maintenance of Namib Desert FCs." |
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| Language: | English |
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| References: | 66 |
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| Note: | Pictures, color
Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
van der Walt, A. J., R. M. Johnson, D. A. Cowan, M. Seely, and J.-B. Ramond. 2016. Unique microbial phylotypes in Namib Desert Dune and gravel plain fairy circle soils. Appl. Environ. Microbiol. 82(15):p. 4592-4601. |
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| DOI: 10.1128/AEM.00844-16 |
| Web URL(s):
http://aem.asm.org/content/82/15/4592.full.pdf
Last checked: 07/13/2017
Requires: PDF Reader
Access conditions: Item is within a limited-access website
http://aem.asm.org/content/82/15/4592.full
Last checked: 07/13/2017
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: QR 1 .A6 |
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