The purpose of this study was to select and characterize a probiotic bacterium with distinctive antimicrobial activities. In this respect, Lactococcus lactis subspecies lactis Z11 (L. lactis Z11) isolated from Zabady (Arabian yoghurt) inhibited other strains of lactic acid bacteria and some food-born pathogens including Listeria monocytogenes, Bacillus cereus and staphylococcus aureus. The inhi...

Cultivated and wild species of wheat are valuable breeding resources used for the development new cultivars with superior root traits suited to drought non-stressed conditions. The present study aimed determine genotypes phenotypic variability among intergeneric hybrids Triticum Aegilops in early vegetative (Z11) stem elongation (Z31) growth stages. Results indicated that rooting depth was 3.2-...

Electronic structure calculations and nonadiabatic dynamics simulations (more than 2000 trajectories) are used to explore the Z-E photoisomerization mechanism and excited-state decay dynamics of two arylazopyrazole photoswitches. Two chiral S1 /S0 conical intersections with associated enantiomeric S1 relaxation paths that are barrierless and efficient (timescale of ca. 50 fs) were found. For th...

BACKGROUND Many employees working outside are exposed to the harmful effects of UV radiation. A growing problem is also sensitization to textile materials and allergic reactions to active compounds. Groups of inorganic UV blockers with nanoparticles may provide superior properties over organic UV absorbers with relatively less potential of provoking dermatitis. OBJECTIVES To assess acute derm...

Evolutionary diversification of sexual communication systems in moths is perplexing because signal and response are under stabilizing selection in many species, and this is expected to constrain evolutionary change. In the moth Heliothis virescens, we consistently found high phenotypic variability in the female sex pheromone blend within each of four geographically distant populations. Here, we...

Abstract GN-z11 is an unusually luminous high-redshift galaxy that was recently observed to have strong nitrogen lines while at the same time lacking traditional signatures of active galactic nucleus activity. These observations been interpreted as a supersolar abundance, which challenging explain with standard stellar evolution and supernova enrichment. We present simulations four models metal...

The display of the reproductive behavior in most noctuid Lepidoptera follows a diel periodicity and is limited to a precise period of either the day or the night. These behavioral traits and the sex pheromone chemistry can be species specific and thus might be linked to the phylogeny. The objective of this study was to test the relationship of these reproductive traits with phylogeny. The study...

Helicoverpa armigera utilizes (Z)-11-hexadecenal (Z11-16:Ald) as its major sex pheromone component. Three binding proteins (PBPs) and two general odorant (GOBPs) are abundantly expressed in the male antennae of H. armigera. However, their precise roles olfactory detection Z11-16:Ald remain enigmatic. To answer this question, we first synthesized antibody against HarmOR13, an receptor (OR) prima...