A5059956884- Microbial Community Ecology and Physiology
- Legume Nitrogen Fixing Symbiosis
- Insect symbiosis and bacterial influences
- Insect behavior and control techniques
- Plant-Microbe Interactions and Immunity
- Genomics and Phylogenetic Studies
- Bacterial Genetics and Biotechnology
- Antibiotic Resistance in Bacteria
- Vibrio bacteria research studies
- Bacteriophages and microbial interactions
- Insect Utilization and Effects
- Bacterial biofilms and quorum sensing
- Evolution and Genetic Dynamics
- Pharmaceutical and Antibiotic Environmental Impacts
- Plant Pathogenic Bacteria Studies
- Environmental DNA in Biodiversity Studies
- Protist diversity and phylogeny
- Insect and Pesticide Research
- biodegradable polymer synthesis and properties
- Nematode management and characterization studies
- Plant Pathogens and Fungal Diseases
- Bacterial Identification and Susceptibility Testing
- Antibiotics Pharmacokinetics and Efficacy
- Wastewater Treatment and Nitrogen Removal
- Biofuel production and bioconversion
Hebrew University of Jerusalem
2015-2024
Agricultural Research Organization
2006-2018
Hebrew College
2009
Quality Research
2006
GTx (United States)
2001
Institut des Sciences du Végétal
1994-1997
Centre National de la Recherche Scientifique
1994
Antibiotic resistance (AR) is a global phenomenon with severe epidemiological ramifications. Anthropogenically impacted natural aquatic and terrestrial environments can serve as reservoirs of antibiotic genes (ARG), which be horizontally transferred to human-associated bacteria through water food webs, thus contribute AR proliferation. Treated-wastewater (TWW) irrigation becoming increasingly prevalent in arid regions the world, due growing demand decline freshwater supplies. The release...
Abstract Nitrogen, although abundant in the atmosphere, is paradoxically a limited resource for multicellular organisms. In Animalia, biological nitrogen fixation has solely been demonstrated termites. We found that all individuals of field‐collected Mediterranean fruit flies ( Ceratitis capitata ) harbour large diazotrophic enterobacterial populations express dinitrogen reductase gut. Moreover, was isolated guts and live may significantly contribute to fly's intake. The presence similar...
Abstract Female Mediterranean fruit flies ( Ceratitis capitata ) oviposit in fruits, within which the larvae develop. This development is associated with rapid deterioration of fruit, and frequently invasion by secondary pests. Most research on associations between medflies microorganisms has focused bacteria inhabiting digestive system adult fly, while role mediating, amplifying or regulating fly microflora been largely neglected. In this study, we examine hypothesis that host plays a...
Abstract Insects are often associated with symbiotic micro‐organisms, which allow them to utilize nutritionally marginal diets. Adult fruit flies ( D iptera: T ephritidae) associate extracellular bacteria E nterobacteriaceae) that inhabit their digestive tract. These obtain nutrients by foraging for plant exudates, honeydew and bird droppings scattered on leaves – a nutritional niche offers ample amounts of carbohydrates, but low quantities available nitrogen. We identified the resident in...
Ripe fruit offer readily available nutrients for many animals, including fly larvae (Diptera: Tephritidae) and their associated rot-inducing bacteria. Yet, during most of ontogeny, remain chemically defended effectively suppress herbivores pathogens by high levels secondary metabolites. Olive flies ( Bactrocera oleae ) are uniquely able to develop in unripe olives. Unlike other frugivorous tephritids, the maintain bacteria confined within midgut caeca. We examined interaction between larvae,...
OPINION article Front. Microbiol., 10 February 2016Sec. Terrestrial Microbiology Volume 7 - 2016 | https://doi.org/10.3389/fmicb.2016.00073
Olive flies ( Bactrocera oleae ) are intimately associated with bacteria throughout their life cycle, and both larvae adults morphologically adapted for housing in the digestive tract. We tested hypothesis that these contribute to adult fly's fitness a diet-dependent fashion. predicted when dietary protein is superabundant, bacterial contribution will be minimal. Conversely, absence of protein, or only non-essential amino acids present (as natural diet), we significant. Accordingly,...
The Mediterranean fruit fly, Ceratitis capitata (Wiedemann) (Diptera: Tephritidae), (medfly) is a polyphagous and cosmopolitan agricultural pest, targeted in many areas for control by the Sterile Insect Technique (SIT). Our objective present study was to test hypothesis that bacterially enriched diet provided sterile males will improve their sexual performance competitive settings emulate natural conditions. Specifically we determined how feeding on diets with Klebsiella oxytoca affected...
Microbial communities in soils may change accordance with distance, season, climate, soil texture and other environmental parameters. diversity patterns have been extensively surveyed temperate regions, but few such studies attempted to address them respect spatial temporal scales their correlations factors, especially arid ecosystems. In order fill this gap on a regional scale, the molecular fingerprints abundance of three taxonomic groups – Bacteria, α-Proteobacteria Actinobacteria were...
The World Health Organization Global Action Plan recommends integrated surveillance programs as crucial strategies for monitoring antibiotic resistance. Although several national are in place clinical and veterinary settings, no such schemes exist antibiotic-resistant bacteria the environment. In this transnational study, we developed, validated, tested a low-cost easy to implement approach evaluate resistance wastewater treatment plants (WWTPs) by targeting cefotaxime-resistant (CTX-R)...
ABSTRACT When grown under suboptimal conditions, rhizobacteria of the genus Azospirillum produce high levels poly-β-hydroxybutyrate (PHB). brasilense strain Sp7 and a phbC (PHB synthase) mutant in which PHB production is impaired were evaluated for metabolic versatility, ability to endure various stress survival soil inoculants, potential promote plant growth. The carbon source utilization data similar wild-type strains, but generation time was shorter than that with all sources tested. wild...
ABSTRACT Thirty new Bdellovibrio strains were isolated from an agricultural soil and the rhizosphere of plants grown in that soil. Using a combined molecular culture-based approach, we found bdellovibrios included subpopulations organisms differed bdellovibrios. Thirteen seven common bean when Pseudomonas corrugata was used as prey; two Erwinia carotovora subsp. Agrobacterium tumefaciens , respectively, one tomato strain A. prey. In rhizosphere, depending on prey cells used, concentrations...
A phylogenetic analysis of Bdellovibrio-and-like organisms (BALOs) was performed. It based on the characterization 71 strains and all consequent 16S rRNA gene sequences available in databases, including clones identified by data-mining, totalling 120 from very varied biotopes. Amplified rDNA restriction (ARDRA) accurately reflected diversity affiliation BALOs, thereby providing an efficient screening tool. Extensive revealed great within Bdellovibrio (> 14 % divergence) Bacteriovorax 16 %)...
Isolates of Colletotrichum spp. from almond, avocado, and strawberry Israel isolates the pink subpopulation almond United States were characterized by various molecular methods compared with morphological identification. Taxon-specific primer analysis grouped avocado within species C. gloeosporioides U.S. Israeli acutatum. However, isolates, previously identified morphologically as gloeosporioides, reacted acutatum-specific primers. Arbitrarily primed polymerase chain reaction A+T-rich DNA...
A medium for consistent induction of aggregation Azospirillum brasilense cells was developed and used to study the effects chemical physical factors as well extracellular components involved in this phenomenon. Growth A. strain Cd a high C:N using fructose ammonium chloride C N sources, respectively, resulted flocculation visible naked eye after 24 h. No cell aggregates were formed 72 h growth low medium. Aggregating cells, but not grown under C:N, accumulated amounts poly--hydroxybutyrate...
Abstract Mediterranean fruit flies ( Ceratitis capitata Wiedemann, Diptera: Tephritidae) harbor a community of diazotrophic bacteria in their digestive system. The present study aims to test the hypothesis that contribute fly fitness by enhancing copulatory success and egg production males females, respectively. After eclosion, were fed full diet containing peptides, sugar minerals, or diet, lacking peptides. Subgroups from each mixture antibiotics ciprofloxacin piperacillin. presence...
The Mediterranean fruit fly (medfly) (Ceratitis capitata) lays eggs in fruits, where larvae subsequently develop, causing large-scale agricultural damage. Within its digestive tract, the supports an extended bacterial community that is composed of multiple strains a variety enterobacterial species. Most these bacteria appear to be functionally redundant, with most sustaining diazotrophy and/or pectinolysis. At least some were shown vertically inherited, but colonization, structural, and...