NDLI: Microbial hitchhikers on intercontinental dust: catching a lift in Chad

Content Provider	PubMed Central
Author	Favet, Jocelyne Ales, Lapanje Giongo, Adriana Kennedy, Suzanne Aung, Yin-yin Cattaneo, Arlette Davis-richardson, Austin G. Brown, Christopher T. Kort, Renate Brumsack, Hans-jürgen Bernhard, Schnetger Chappell, Adrian Jaap, Kroijenga Beck, Andreas Karin, Schwibbert Mohamed, Ahmed H. Kirchner, Timothy Quadros, Patricia Dorr De Triplett, Eric W. Broughton, William J. Gorbushina, Anna A.
Copyright Year	2013
Abstract	Ancient mariners knew that dust whipped up from deserts by strong winds travelled long distances, including over oceans. Satellite remote sensing revealed major dust sources across the Sahara. Indeed, the Bodélé Depression in the Republic of Chad has been called the dustiest place on earth. We analysed desert sand from various locations in Chad and dust that had blown to the Cape Verde Islands. High throughput sequencing techniques combined with classical microbiological methods showed that the samples contained a large variety of microbes well adapted to the harsh desert conditions. The most abundant bacterial groupings in four different phyla included: (a) Firmicutes—Bacillaceae, (b) Actinobacteria—Geodermatophilaceae, Nocardiodaceae and Solirubrobacteraceae, (c) Proteobacteria—Oxalobacteraceae, Rhizobiales and Sphingomonadaceae, and (d) Bacteroidetes—Cytophagaceae. Ascomycota was the overwhelmingly dominant fungal group followed by Basidiomycota and traces of Chytridiomycota, Microsporidia and Glomeromycota. Two freshwater algae (Trebouxiophyceae) were isolated. Most predominant taxa are widely distributed land inhabitants that are common in soil and on the surfaces of plants. Examples include Bradyrhizobium spp. that nodulate and fix nitrogen in Acacia species, the predominant trees of the Sahara as well as Herbaspirillum (Oxalobacteraceae), a group of chemoorganotrophic free-living soil inhabitants that fix nitrogen in association with Gramineae roots. Few pathogenic strains were found, suggesting that African dust is not a large threat to public health.
Related Links	http://dx.doi.org/10.1038/ismej.2012.152
Ending Page	867
Page Count	18
Starting Page	850
File Format	PDF
ISSN	17517362
e-ISSN	17517370
Journal	The ISME Journal
Issue Number	4
Volume Number	7
Language	English
Publisher	Nature Publishing Group
Publisher Date	2013-04-01
Access Restriction	Open
Rights Holder	Nature Publishing Group
Subject Keyword	Ecology, Evolution, Behavior and Systematics Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics Microbiology

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