Bimetallic selenium/zinc oxide nanoparticles: biological activity and plant biostimulant properties.

Extracts of medicinal seeds can be used to synthesize nanoparticles (NPs) in more environmentally friendly ways than physical or chemical ways. For the first time, aqueous extract from unexploited grape seeds was used in this study to create Se/ZnO NPS utilizing a green technique, and their antimicrobial activity, cytotoxicity, antioxidant activities, and plant bio stimulant properties of the economic Vicia faba L. plant were evaluated.

Synthesis of chitosan/FeO/CuO-nanocomposite and their role as inhibitor for some biological disorders in vitro with molecular docking interactions studies.

The hybrid material between the functional elements particularly with the polymer compounds as a nanocomposites are attractive in numerous fields. In the current work, chitosan/FeO/CuO-nanocomposite has been successfully synthesized in situ via a coprecipitation method and characterized by several apparatuses. The X-ray diffraction cleared that chitosan/FeO/CuO-nanocomposite was crystalline.

The potential of Actinoplanes spp. for alleviating the oxidative stress induced by thallium toxicity in wheat plants.

To reduce heavy metal toxicity, like that induced by thallium (TI) in plants, growth-promoting bacteria (GPB) are a widely used to enhance plant tolerance to heavy metals toxicity. In our study, we characterized seven GPB and identified Actinoplanes spp., as the most active strain.

The potent effect of selenium nanoparticles: insight into the antifungal activity and preservation of postharvest strawberries from gray mold diseases.

Background: Most microorganisms that cause food decay and the lower the shelf life of foods are fungi. Nanotechnologies can combat various diseases and deal with the application of nanomaterial to target cells or tissues. In this study selenium nanoparticles (Se-NPs) were synthesized using ascorbic acid and characterized by ultraviolet-visible spectroscopy, transmission electron microscopy (TEM), X-ray diffraction and zeta potential.

Phylogeny and functional diversity of halophilic microbial communities from a thalasso environment.

The El-Rawda solar saltern, located in North Sinai, Egypt, is formed through the process of water evaporation from the Bradawil lagoon. This evaporation leads to the precipitation of gypsum, halite minerals, and salt flats, which subsequently cover the southern and eastern areas of the lagoon. This study employed the shotgun metagenomic approach, the illumine platform, and bioinformatic tools to investigate the taxonomic composition and functional diversity of halophilic microbial communities in solar saltern.

Rapeseed plant: biostimulation effects of plant growth-promoting Actinobacteria on metabolites and antioxidant defense system under elevated CO conditions.

Background: The present study set out to evaluate the potential of plant growth-promoting Actinobacteria (PGPB) in improving some physiological and molecular parameters of rapeseed (Brassica napus L.) plants under ambient and elevated CO conditions by assessing some nitrogen- and sulfur-containing metabolites, antioxidant defense system and antimicrobial activity. With this aim, a pot experiment was conducted where the rapeseed plants were treated with Actinobacterium sp.

The new isolated Archaea strain improved grain yield, metabolism and quality of wheat plants under Co stress conditions.

Heavy metal (e.g. cobalt) pollution causes a serious of environmental and agricultural problems.

Characterization of Polyhydroxybutyrate, PHB, Synthesized by Newly Isolated Haloarchaea spp.

This work aims to characterize the haloarchaeal diversity of unexplored environmental salty samples from a hypersaline environment on the southern coast of Jeddah, Saudi Arabia, looking for new isolates able to produce polyhydroxyalkanoates (PHAs). Thus, the list of PHA producers has been extended by describing two species of ; sp. strain NRS_35 and unclassified sp.

Selection of Newly Identified Growth-Promoting Archaea With a Potential Action on Cobalt Resistance in Maize Plants.

Soil contamination with cobalt (Co) negatively impacts plant growth and production. To combat Co toxicity, plant growth-promoting microorganisms for improving plant growth are effectively applied. To this end, unclassified haloarchaeal species strain NRS_31 (OL912833), belonging to , was isolated, identified for the first time, and applied to mitigate the Co phytotoxic effects on maize plants.

Antimicrobial, Antigenotoxicity, and Characterization of and Its Rhizosphere-Inhabiting Actinobacteria: In Vitro and In Vivo Studies.

() is a wild shrub that is a medicinal plant found in abundance throughout Saudi Arabia. In this study, we investigated the phytochemical composition and antigenotoxic properties of the ethanolic extract of , in addition to the antimicrobial activity of the plant and its rhizospheric actinobacteria effects against pathogenic microorganisms. Soil-extract medium supplemented with glycerol as a carbon source and starch-casein agar medium was used for isolation of actinobacteria from rhizosphere.

Anti- and Antibiofilm Potency of L. Essential Oil against Antibiotic-Resistant .

Raw milk is a significant vehicle for the transmission of different infections. In the present study, we focused on from raw milk and its resistance to various antibacterial drugs. Furthermore, we have investigated the antimicrobial and antibiofilm effects of essential oil (EO) obtained from L.

In Vitro Assessment of Antistaphylococci, Antitumor, Immunological and Structural Characterization of Acidic Bioactive Exopolysaccharides from Marine Isolated from Saudi Arabia.

A strain of was isolated from the Saudi Red Sea coast and identified based on culture features, biochemical characteristics, and phylogenetic analysis of 16S rRNA sequences. EPSR3 was a major fraction of exopolysaccharides (EP) containing no sulfate and had uronic acid (28.7%).

Potential use of a novel actinobacterial species to ameliorate tungsten nanoparticles induced oxidative damage in cereal crops.

Tungsten nanoparticles (WNPs) could induce hazard impact on plant growth and development; however, no study investigated their phytotoxicity. On the other hand, plant growth-promoting bacteria (PGPB) can effectively reduce WNPs toxicity. To this end, Nocardiopsis sp.

Soil enrichment with actinomycete mitigates the toxicity of arsenic oxide nanoparticles on wheat and maize growth and metabolism.

The use of plant growth-promoting bacteria (PGPB) to enhance plant growth and protection against heavy metal toxicity has been extensively studied. However, its potentiality to reduce arsenate toxicity, a threat to plant growth and metabolism, has been hardly investigated. Moreover, the toxic effect of arsenic oxide nanoparticles (As-NPs) on plants and possible mechanisms for its alleviation has not yet been explored.

Establishment of actinobacteria-Satureja hortensis interactions under future climate CO-enhanced crop productivity in drought environments of Saudi Arabia.

Drought is a significant global constraint on agricultural production and food security. As a promising approach to improve plant growth and yield under challenging conditions, plant growth-promoting actinobacteria has attracted much interest. Further, elevated levels of atmospheric CO (eCO) may promote the plant-actinobacteria interactions which could be effective to improve the plant growth for food production.

Biosynthesis of silver nanoparticles using Haloferax sp. NRS1: image analysis, characterization, in vitro thrombolysis and cytotoxicity.

Haloferax sp strain NRS1 (MT967913) was isolated from a solar saltern on the southern coast of the Red Sea, Jeddah, Saudi Arabia. The present study was designed for estimate the potential capacity of the Haloferax sp strain NRS1 to synthesize (silver nanoparticles) AgNPs. Biological activities such as thrombolysis and cytotoxicity of biosynthesized AgNPs were evaluated.

Haloarchaea as Cell Factories to Produce Bioplastics.

Plastic pollution is a worldwide concern causing the death of animals (mainly aquatic fauna) and environmental deterioration. Plastic recycling is, in most cases, difficult or even impossible. For this reason, new research lines are emerging to identify highly biodegradable bioplastics or plastic formulations that are more environmentally friendly than current ones.

A Bioactive Fraction from sp. Enhances Maize Tolerance against Drought Stress.

Drought stress is threatening the growth and productivity of many economical crops. Therefore, it is necessary to establish innovative and efficient approaches for improving crop growth and productivity. Here we investigated the potentials of the cell-free extract of Actinobacteria (Ac) isolated from a semi-arid habitat (Al-Jouf region, Saudi Arabia) to recover the reduction in maize growth and improve the physiological stress tolerance induced by drought.

Genome sequence of carboxylesterase, carboxylase and xylose isomerase producing alkaliphilic haloarchaeon Haloterrigena turkmenica WANU15.

We report draft genome sequence of Haloterrigena turkmenica strain WANU15, isolated from Soda Lake. The draft genome size is 2,950,899 bp with a G + C content of 64% and contains 49 RNA sequence. The genome sequence can be accessed at DDBJ/EMBL/GenBank under the accession no.

Genome sequencing and annotation of Proteus sp. SAS71.

We report draft genome sequence of Proteus sp. strain SAS71, isolated from water spring in Aljouf region, Saudi Arabia. The draft genome size is 3,037,704 bp with a G + C content of 39.

Genome sequencing and annotation of Morganella sp. SA36.

We report draft genome sequence of Morganella sp. Strain SA36, isolated from water spring in Aljouf region, Saudi Arabia. The draft genome size is 2,564,439 bp with a G + C content of 51.