Richness and Diversity in Dust Stormborne Biomes at the Southeast Mediterranean

Katra, Itzhak; Arotsker, Luba; Krasnov, Helena; Zaritsky, Arieh; Kushmaro, Ariel; Ben‐Dov, Eitan

doi:10.1038/srep05265

Cited by 98 publications

(68 citation statements)

References 60 publications

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“…Comparisons with two other dust events in very different locations show similarly disparate communities. While the dominant taxa found in the Mediterranean (a-proteobacteria, b-proteobacteria and Sphingobacteria) and Japan (Bacilli, Actinobacteria and Sphingobacteria) (Yamaguchi et al 2012;Katra et al 2014) were also present in our samples, none of the proportions appeared similar. This is not at all surprising, given that none of the studies shared a location, sampling height or distance from the source area.…”

Section: Discussioncontrasting

confidence: 47%

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Characterizing bacterial assemblages in sediments and aerosols at a dry lake bed in Australia using high-throughput sequencing

et al. 2015

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Dust storms are responsible for the transport of a large quantity of bacteria from arid regions. A severe drought in the first decade of the new millennium in Australia increased the incidence of dust transport further. The major aims of this study were to characterize the bacterial communities in aerosols and their associated source sediments using high-throughput sequencing (HTS) and to investigate the possibility of using HTS to link dust to its source, which has not been previously performed in this way. Four field campaigns were conducted at the recently evaporated saline playa Lake Gnarpurt in the Australian state of Victoria between 2008 and 2010 (3 in the austral summer, 1 in winter) to collect aerosol and sediment samples. Aerosol samples were collected on filters up to 150 m above the lake bed using a tethered heliumfilled balloon. DNA was extracted from all samples using commercial kits, and the bacterial communities were examined using 454 HTS on the 16S rRNA gene. Over 200,000 sequences from 29 samples were analysed. In both sediment and aerosol samples, Salinimicrobium was the most abundant taxon; however, there was great variation and diversity across all samples. Analysis of similarities of the bacterial communities indicated that there was a significant overlap between the sediment samples and the aerosols collected above that location, showing that the bacteria in the air was derived from a subset of dust from a nearby source. The challenge remains to use bacterial profiling to link an aerosol sample to a distant source.

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Section: Discussioncontrasting

confidence: 47%

“…One of the HTS platforms, 454 (Roche Life Science), has been used in the analysis of dust (Katra et al 2014) and dust source material (Abed et al 2012) and has been integrated into a range of other aerosol applications (e.g. Bowers et al 2012;DeLeon-Rodriguez et al 2013).…”

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confidence: 99%

Characterizing bacterial assemblages in sediments and aerosols at a dry lake bed in Australia using high-throughput sequencing

et al. 2015

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“…Indeed, both autotrophic and heterotrophic microbes were delivered with the Syrian aerosol studied here (Figure 2). These include commonly isolated bacteria from marine, freshwater, and terrestrial environments (e.g., Cho and Hwang, 2011;Seifried et al, 2015), as well as from the surroundings of the SEMS (Katra et al, 2014;Rahav et al, 2016a). It should be noted, that based on the 16S rRNA gene, we cannot rule out that in addition to heterotrophic microbes, chemolithotrophic bacteria were also part of the aerosol collection (Gat et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

The Impact of Atmospheric Dry Deposition Associated Microbes on the Southeastern Mediterranean Sea Surface Water following an Intense Dust Storm

et al. 2016

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This study explores the potential impacts of microbes deposited into the surface seawater of the southeastern Mediterranean Sea (SEMS) along with atmospheric particles on marine autotrophic and heterotrophic production. We compared in situ changes in autotrophic and heterotrophic microbial abundance and production rates before and during an intense dust storm event in early September 2015. Additionally, we measured the activity of microbes associated with atmospheric dry deposition (also referred to as airborne microbes) in sterile SEMS water using the same particles collected during the dust storm. A high diversity of prokaryotes and a low diversity of autotrophic eukaryotic algae were delivered to surface SEMS waters by the storm. Autotrophic airborne microbial abundance and activity were low, contributing ∼1% of natural abundance in SEMS water and accounting for 1-4% to primary production. Airborne heterotrophic bacteria comprised 30-50% of the cells and accounted for 13-42% of bacterial production. Our results demonstrate that atmospheric dry deposition may supply not only chemical constitutes but also microbes that can affect ambient microbial populations and their activity in the surface ocean. Airborne microbes may play a greater role in ocean biogeochemistry in the future in light of the expected enhancement of dust storm durations and frequencies due to climate change and desertification processes.

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“…Within-sample diversity (Alpha diversity) was analyzed with Good's coverage estimator (Good 1953) index, as described by Tully and Heidelberg (2013); the Chao-1 richness estimator (community richness), as described by Katra (Katra et al 2014); and the inverse Simpson diversity index (community diversity) with the same number of sequences in each sample (sub.sample) (Schloss et al 2009). Rarefaction curves were made using R software (v3.2.0; http://www.r-project.org/) with the data generated by Mothur (rarefaction.single).…”

Section: Metadata Processing and Statistical Analysismentioning

confidence: 99%

A sequencing approach targeting the 16S rRNA gene unravels the biofilm composition of spiral-wound membranes used in the dairy industry

Chamberland

Lessard

Doyen

et al. 2016

Dairy Sci. & Technol.

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Few data are available concerning the composition of biofilms found at the surface of filtration membranes, which, to some extent, explains the long-term failure of numerous strategies developed to control biofouling. This preliminary study intended to design a metagenomic tool targeting the 16S rRNA gene in order to unravel a general portrait of bacterial communities found on spiral-wound membranes used in the dairy industry. A total of seven spiral-wound membrane elements (ultrafiltration, nanofiltration, or reverse osmosis) at the end of their useful lifetimes were collected from different dairy plants. Targeted analysis of the 16S rRNA genes of the metagenome extracted from the membranes revealed their bacterial diversity via high-throughput sequencing technology (Miseq, Illumina). It was found that the nature of the filtered fluid (milk, whey, water) explained 58.6 % of the variance observed between communities found on membranes. Treatments applied on dairy fluids (milk pasteurization, whey bleaching or whey ultrafiltration) induced a selective pressure that affected the diversity of bacterial communities found on membranes and the proportions of spore-former bacteria among them. This work provides the first complete bacterial portrait of the biofilm composition of spiral-wound membranes used in the dairy industry. It suggests that the nature of the filtered fluid and potentially filtration Dairy Sci. & Technol. (2017)

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Richness and Diversity in Dust Stormborne Biomes at the Southeast Mediterranean

Cited by 98 publications

References 60 publications

Characterizing bacterial assemblages in sediments and aerosols at a dry lake bed in Australia using high-throughput sequencing

Characterizing bacterial assemblages in sediments and aerosols at a dry lake bed in Australia using high-throughput sequencing

The Impact of Atmospheric Dry Deposition Associated Microbes on the Southeastern Mediterranean Sea Surface Water following an Intense Dust Storm

A sequencing approach targeting the 16S rRNA gene unravels the biofilm composition of spiral-wound membranes used in the dairy industry

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