A5077957975- Microbial Community Ecology and Physiology
- Atmospheric chemistry and aerosols
- Indoor Air Quality and Microbial Exposure
- Air Quality and Health Impacts
- Microbial Applications in Construction Materials
- Microbial Fuel Cells and Bioremediation
- Methane Hydrates and Related Phenomena
- Atmospheric and Environmental Gas Dynamics
- Gut microbiota and health
- Microbial Metabolic Engineering and Bioproduction
- Atmospheric aerosols and clouds
- Aeolian processes and effects
- Calcium Carbonate Crystallization and Inhibition
- Biofuel production and bioconversion
- Marine and coastal ecosystems
- Thermal properties of materials
- Protist diversity and phylogeny
- Advancements in Semiconductor Devices and Circuit Design
- Odor and Emission Control Technologies
- Evolution and Genetic Dynamics
- Viral Infectious Diseases and Gene Expression in Insects
- Climate Change and Health Impacts
- Enzyme Production and Characterization
- Air Quality Monitoring and Forecasting
- Bacterial biofilms and quorum sensing
Weizmann Institute of Science
2017-2023
Helmholtz Zentrum München
2021-2022
ORCID
2021
Ben-Gurion University of the Negev
1991-2020
Background: Secondary organic aerosols (SOAs) formed from anthropogenic or biogenic gaseous precursors in the atmosphere substantially contribute to ambient fine particulate matter [PM ≤2.5μm aerodynamic diameter (PM2.5)] burden, which has been associated with adverse human health effects. However, there is only limited evidence on their differential toxicological impact. Objectives: We aimed discriminate effects of generated by atmospheric aging combustion soot particles (SPs) (β-pinene)...
Microorganisms carried by dust storms are transported through the atmosphere and may affect human health functionality of microbial communities in various environments. Characterizing dust-borne microbiome different origins or that followed trajectories provides valuable data to improve our understanding global environmental impacts. We present a comparative study on diversity bacterial from three distinct (North Africa, Syria Saudi Arabia) compare them with local sampled clear days, all...
Microbial-induced CaCO3 precipitation (MICP) via urea-hydrolysis (ureolysis) is an emerging soil improvement technique for various civil engineering and environmental applications. In-situ application of MICP in soils performed either by augmenting the site with ureolytic bacteria or stimulating indigenous bacteria. Both these approaches may lead to changes bacterial population composition accumulation large quantities ammonium. In this batch study, effective ureolysis was stimulated coastal...
Abstract The diversity of microbes and their transmission between ocean atmosphere are poorly understood despite the implications for microbial global dispersion biogeochemical processes. Here, we survey genetic airborne surface bacterial communities sampled during springtime transects across northwest Pacific subtropical north Atlantic as part Tara Expedition. We find that community composition is more variable in than ocean. Bacterial were similar two oceans overlying atmosphere. Likewise,...
Abstract Processes influencing the transport of airborne bacterial communities in atmosphere are poorly understood. Here, we report comprehensive and quantitative evidence key factors by dust plumes Eastern Mediterranean. We extracted DNA RNA from size-resolved aerosols sampled air masses different origins, followed qPCR high-throughput amplicon sequencing 16 S ribosomal gene transcripts. find that community composition varied with mass origin particle size. Bacterial abundance, alpha...
Abstract. Microbial-induced CaCO3 precipitation (MICP) is an innovative technique that harnesses bacterial activity for the modification of physical properties soils. Since stimulation MICP by urea hydrolysis in natural soils likely to be affected interactions between ureolytic and non-ureolytic bacteria, we designed experiment examine bacteria effect these on MICP. An artificial groundwater-based rich medium was inoculated with two model species Sporosarcina pasteurii Bacillus subtilis. The...
The health effects of exposure to secondary organic aerosols (SOAs) are still limited. Here, we investigated and compared the toxicities soot particles (SP) coated with β-pinene SOA (SOAβPin-SP) SP naphthalene (SOANap-SP) in a human bronchial epithelial cell line (BEAS-2B) residing at air–liquid interface. SOAβPin-SP mostly contained oxygenated aliphatic compounds from photooxidation, whereas SOANap-SP significant fraction aromatic products under similar conditions. Following exposure,...
Microbially-induced calcite precipitation (MICP) is an emerging ground-modification technique. This paper presents the results of laboratory experiments that elucidate some biological factors affecting bioaugmentation and biostimulation strategies MICP. Co-culture suggest ureolytic bacterium Sporosarcina pasteurii (DSMZ 33) might release enzyme urease once introduced into a medium containing non-ureolytic Bacillus subtilis 6397) due to lysis by latter, resulting in uncontrolled...
The atmosphere plays an important role in transporting microorganisms on a global scale, yet the processes affecting composition of airborne microbiome, aerobiome, are not fully outlined. Here we present community compositions bacteria and fungi obtained by DNA amplicon-sequencing aerosol samples collected size-resolved manner during nine consecutive days central Israel. campaign captured dust events originating from Sahara Arabian deserts, as well without (“clear days”). We found that...
Abstract Atrazine is an herbicide and a pollutant of great environmental concern that naturally biodegraded by microbial communities. Paenarthrobacter aurescens TC1 one the most studied degraders this herbicide. Here, we developed genome scale metabolic model for P. TC1, i RZ1179, to study atrazine degradation process at organism level. Constraint based flux balance analysis time dependent simulations were used explore organism’s phenotypic landscape. Simulations aimed designing media...
Airborne microbial communities directly impact the health of humans, animals, plants, and receiving ecosystems. While airborne bacterial fungal have been studied by both cultivation-based methods metabarcoding surveys targeting specific molecular markers, fewer studies used shotgun metagenomics to study mycobiome. We analyzed diversity relative abundance fungi in nine metagenomes collected on clear days ("background") during dust storms Eastern Mediterranean. The negative correlation between...
Abstract The microbiome of atmospheric dust events has raised increasing interest in the last decade, resulting numerous studies that characterized different parameters affecting composition microbiome, is, aerobiome. However, less is known about functional profile aerobiome and how it compares with other environments. Here, we describe results shotgun metagenome analysis conducted on a representative set particulate matter (PM) samples taken Israel under dusty nondusty conditions. We...
We present results from experiments of microbially induced calcite precipitation (MICP) in co-cultures model bacteria and studying the ureolytic potential native bacterial extracts. The were designed to study possible interactions associated with introduction exogenous into a soil. It was found that bacteria, S. pasteurii, increasing concentrations nonureolytic B. subtillis, rate ureolysis increased concentration subtillis. postulate rates are attributed release urease by pasteurii response...
Abstract. While the atmosphere in eastern Mediterranean is part of dust belt, it encounters air masses from Europe, Sea, and Sahara Arabian Desert that bring with them a whole host potential bioaerosol compositions concentrations via long-range transport. The consequential changes populations ice-nucleating particles (INPs), aerosols influence weather climate by triggering freezing supercooled cloud water droplets, including convective systems region, are not so well understood beyond desert...
Measurements of transient heating in a 1.1- mu m PMOSFET, located 1.5- m*1.5-mm die and mounted on gold-plated ceramic package are reported. Steady-state temperature profiles range 500 from midchannel also presented . Temperatures were measured using the thermal imaging technique. The steady-state device reached after 3 min operation at mod V/sub gs/ = ds/ =5 V, was 322 K, rise time 2 min. Theoretical results based analytical model D. K. Sharma K.V. Ramanathan (1983), which two-dimensional...
Abstract. Microbial-induced CaCO3 precipitation (MICP) is an innovative technique that harnesses bacterial activity for the modification of physical properties soils. Since stimulation MICP by urea hydrolysis in natural soils likely to be affected interactions between ureolytic and non-ureolytic bacteria, we designed experiment examine bacteria effect these on MICP. An artificial groundwater-based rich medium was inoculated with two model species Sporosarcina pasteurii Bacillus subtilis. The...
Abstract. While the atmosphere in Eastern Mediterranean is part of dust belt, it encounters air masses from Europe, Sea, and Sahara Arabian Deserts that bring with them a whole host potential bioaerosol compositions concentrations via long-range transport. The consequential changes populations ice-nucleating particles (INPs), aerosols influence weather climate by triggering freezing supercooled cloud water droplets, including convective systems region, are not so well understood beyond...
ABSTRACT Atrazine is an herbicide and pollutant of great environmental concern that naturally biodegraded by microbial communities. The efficiency biodegradation can be improved through the stimulating addition fertilizers, electron acceptors, etc. In recent years, metabolic modelling approaches have become widely used as in silico tool for organism-level phenotyping subsequent development engineering strategies including improvement. Here, we constructed a genome scale model, i RZ960,...
Abstract Microbes are ubiquitous in the oceans and atmosphere, playing essential roles biogeochemical processes. The bio-exchanges between two environments can provide important insights into microbial distribution diversity but still not well understood. We simultaneously surveyed genomic of airborne marine bacterial communities across 15 000 kilometers Atlantic Pacific oceans. Higher variability community composition was observed atmosphere than ocean surface waters. In addition, a greater...
Aerosol sampling details (Tables S1-S3)1 Table S1: Details of the aerosol samples collected during field campaign in Rehovot, Israel, October-November 2018.Samples 25 were either using a filter-based platform (BGI PQ100 Air Sampling System with PM10 inlet, Mesa Laboratories), or an impinger (Coriolis® Micro, Bertin Technologies), then particle suspended purified water known volume (i.e. wash volume).All times are local, and dates provided DD/MM/YY format.