Bacterial Diversity of Surface Sand Samples from the Gobi and Taklamaken Deserts

An, Shu; Couteau, C.; Fan, Luo; Neveu, J. P.; DuBow, Michael S.

doi:10.1007/s00248-013-0276-2

Cited by 89 publications

(57 citation statements)

References 43 publications

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“…Among the nine genera whose proportions increased during Asian sandstorms, members of the genera Pontibacter, Pedobacter and Lysobacter were also detected in the desert soils of China (Zhou et al, 2007;Tang et al, 2010;An et al, 2013), whereas members of the genus Planococcus have been isolated from African desert dust events (Griffin, 2007). These results suggest that members of these bacterial genera may be common in hot desert environments and subjected to atmospheric dispersal.…”

Section: Genus Level Population Modificationsmentioning

confidence: 95%

“…However, they were not as readily abundant in the control samples, except for the Gwangju 2011 control sample, which was collected 4 days after a sandstorm. It is interesting to note that members belonging to the genus Massilia have been detected in desert environments (Chanal et al, 2006;An et al, 2013) and sandstorm samples (Griffin, 2007). That the detectable 16S rDNA sequences have Figure 4 Normed PCA using phyla composition data (a) or OTU composition (b) data generated by R. Red letters are used to represent samples from 2011, whereas green letters are used to represent samples from 2010.…”

Section: Genus Level Population Modificationsmentioning

confidence: 99%

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Modification of atmospheric sand-associated bacterial communities during Asian sandstorms in China and South Korea

Sin

DuBow

2014

Heredity

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The transport of desert soil into the atmosphere during desert sandstorms can affect the Earth's climate and environmental health. Asian desert sandstorms occur almost every year during the Spring, as the atmosphere in the Northern hemisphere warms. It is conceivable that these Asian desert sandstorms may transport microbes from deserts, such as the Gobi and Taklamaken deserts, over long distances in China, east Asia and the Pacific. In this study, we examined local atmospheric sand particle-associated bacterial populations collected in the absence (sterile sand exposed for 24 h to the air in the absence of a sandstorm) and presence of sandstorms in five Asian cities. We used pyrosequencing of PCR-amplified 16S rDNA genes from sand-extracted total DNA to overcome cultivation limitations of bacterial enumeration. We found that 490% of the control and sandstorm sequences could be classified as representing bacteria belonging to four phyla: Proteobacteria, Bacteriodetes, Actinobacteria and Firmicutes. The sand-associated bacterial populations in sandstorm samples were distinct from sandassociated bacteria in the absence of a sandstorm. Members of the phylum Proteobacteria were found to significantly increase in sandstorm samples (P = 0.01). Principal component analyses showed that the sand-associated bacterial populations were best clustered by sampling year, rather than location. DNA sequences representing bacteria belonging to several genera (including putative human pathogens) were observed to increase in sand-associated samples from sandstorms, whereas others were found to decrease, when comparing sand-associated bacterial populations versus those in control samples, suggesting human/ environmental implications of sandstorm events.

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Section: Genus Level Population Modificationsmentioning

confidence: 95%

Section: Genus Level Population Modificationsmentioning

confidence: 99%

Modification of atmospheric sand-associated bacterial communities during Asian sandstorms in China and South Korea

Sin

DuBow

2014

Heredity

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“…The airborne bacteria were known to be mixed vertically at high altitudes above the oasis city, Dunhuang, in Taklimakan desert (Maki et al 2008; Kakikawa et al 2008). The desert sand included several kinds of bacterial species, and some of the bacterial population would be transported to atmosphere over ground surfaces (An et al 2013; Puspitasari et al 2015). While the airborne bacteria around the Mogao Caves in Dunhuang were also investigated, the bacterial variations depended on the numbers of tourists visiting the caves (Wang et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Variations in the structure of airborne bacterial communities in Tsogt-Ovoo of Gobi desert area during dust events

Maki

Kurosaki

Onishi

et al. 2016

Air Qual Atmos Health

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Asian dust events transport the airborne bacteria in Chinese desert regions as well as mineral particles and influence downwind area varying biological ecosystems and climate changes. However, the airborne bacterial dynamics were rarely investigated in the Gobi desert area, where dust events are highly frequent. In this study, air samplings were sequentially performed at a 2-m high above the ground at the sampling site located in desert area (Tsogt-Ovoo of Gobi desert; Mongolia 44.2304°N, 105.1700°E). During the dust event days, the bacterial cells and mineral particles increased to more than tenfold of concentrations. MiSeq sequencing targeting 16S ribosomal DNA revealed that the airborne bacteria in desert area mainly belonged to the classes Acidobacteria, Actinobacteria, Bacteroidetes, Chloroflexi, Bacilli, Alpha-proteobacteria, Beta-proteobacteria, and Gamma-proteobacteria. The bacterial community structures were different between dust events and non-dust events. The air samples collected at the dust events indicated high abundance rates of Alpha-proteobacteria, which were reported to dominate on the leaf surfaces of plants or in the saline lake environments. After the dust events, the members of Firmicutes (Bacilli) and Bacteroidetes, which are known to form endospore and attach with coarse particles, respectively, increased their relative abundances in the air samples. Presumably, the bacterial compositions and diversities in atmosphere significantly vary during dust events, which carry some particles from grassland (phyllo-sphere), dry lake, and sand surfaces, as well as some bacterial populations such as Firmicutes and Bacteroidetes maintain in the atmosphere for longer time.Electronic supplementary materialThe online version of this article (doi:10.1007/s11869-016-0430-3) contains supplementary material, which is available to authorized users.

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“…Zhang et al, (2012) studied the distribution and diversity of bacteria in the southeast edge of the Tengger Desert of China, and their work provided a key approach of the correlations between the bacterial communities identified by DGGE bands and the structure of desert soil enzyme activities [14]. An et al, (2013) analyzed the bacterial diversity of surface sand samples from the Gobi and Taklamaken deserts using bacterial Tag-Encoded FLX Amplicon Pyrosequencing (bTEFAP) of PCR amplified 16S rDNA. Their results revealed an enormous bacterial diversity residing in the surface sands (≥ 10 3 OTUs/5g sand) of these two deserts.…”

Section: Introductionmentioning

confidence: 99%

“…Their results revealed an enormous bacterial diversity residing in the surface sands (≥ 10 3 OTUs/5g sand) of these two deserts. Members belonging to four phyla: Firmicutes, Proteobacteria, Bacteroidetes and Actinobacteria were found to be the dominant bacterial members of the samples [15]. Using the same sequencing technology, Steven et al, (2013) characterized the bacterial communities of bio crusts in water tracks of the Artic polar region.…”

Section: Introductionmentioning

confidence: 99%

Bacterial Rhizosphere Biodiversity from Several Pioneer Desert Sand Plants Near Jizan, Saudi Arabia

Osman¹,

Zélicourt²,

Bisseling³

et al. 2016

Open Conf. Proceed. J.

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Life in arid regions and, in particular, hot deserts is often limited due to their harsh environmental conditions, such as large temperature fluctuations and low amounts of water. These extreme environments can influence the microbial community present on the surface sands and any rhizosphere members surrounding desert plant roots. The Jizan desert area, located in Saudi Arabia, supports particular vegetation that grows in the large sandy flat terrain. We examined five different samples, four from the rhizosphere of pioneer plants plus a surface sand sample, and used pyrosequencing of PCR-amplified V1-V3 regions of 16S rDNA genes from total extracted DNA to reveal and compare the bacterial population diversity of the samples. The results showed a total of 3,530 OTUs in the five samples, calculated using ≥ 97% sequence similarity levels. The Chao1 estimation of the bacterial diversity fluctuated from 637 to 2,026 OTUs for a given sample. The most abundant members found in the samples belong to the Bacteroidetes, Firmicutes and Proteobacteria phyla. This work shows that the Jizan desert area of Saudi Arabia can contain a diverse bacterial community on the sand and surrounding the roots of pioneer desert plants. It also shows that desert sand microbiomes can vary depending on conditions, with broad implications for sandstone monument bacterial communities

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Bacterial Diversity of Surface Sand Samples from the Gobi and Taklamaken Deserts

Cited by 89 publications

References 43 publications

Modification of atmospheric sand-associated bacterial communities during Asian sandstorms in China and South Korea

Modification of atmospheric sand-associated bacterial communities during Asian sandstorms in China and South Korea

Variations in the structure of airborne bacterial communities in Tsogt-Ovoo of Gobi desert area during dust events

Bacterial Rhizosphere Biodiversity from Several Pioneer Desert Sand Plants Near Jizan, Saudi Arabia

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