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Moisture governs diesel biodegradation in sand soil – polystyrene microplastic have a negligible impact
Antimicrobial and Virucidal Potential of Morpholinium-Based Ionic Liquids
Witnessed by the ongoing spread of antimicrobial resistant bacteria as well as the recent global pandemic of the SARS-CoV-2 virus, the development of new disinfection strategies is of great importance, and novel substance classes as effective antimicrobials and virucides are urgently needed. Ionic liquids (ILs), low-melting salts, have been already recognized as efficient antimicrobial agents with prospects for antiviral potential. In this study, we examined the antiviral activity of 12 morpholinium based herbicidal ionic liquids with a tripartite test system, including enzyme inhibition tests, virucidal activity determination against five model viruses and activity against five bacterial species. The antimicrobial and enzymatic tests confirmed that the inhibiting activity of ILs corresponds with the number of long alkyl side chains and that [Dec2Mor]+ based ILs are promising candidates as novel antimicrobials. The virucidal tests showed that ILs antiviral activity depends on the type and structure of the virus, revealing enveloped Phi6 phage as highly susceptible to the ILs action, while the non-enveloped phages PRD1 and MS2 proved completely resistant to ionic liquids. Furthermore, a comparison of results obtained for P100 and P001 phages demonstrated for the first time that the susceptibility of viruses to ionic liquids can be dependent on differences in the phage tail structure.
Morpholinium-based Ionic Liquids as Potent Antibiofilm and Sensitizing Agents for the Control of Pseudomonas aeruginosa
Pollen microbiomes of solitary bees (Osmia rufa L. syn. O. bicornis) from seed orchards
Abstract The red mason (Osmia rufa L. syn. O. bicornis) is a solitary bee that is commonly used for pollination of fruit crops. Given the declining numbers of pollinators in various environments, the mason bee has not only become an effective insect as an additional pollinator, but sometimes it becomes the main species that is used to increase the yield of crops. Due to easy rearing and not showing aggressiveness towards people. The individual features of the mason bee have made the interest in this species constantly growing. Currently, the wild bees is more important for the forestry and production the seeds. So far, only the honeybee (Apis mellifera mellifera) has been successfully used to work in forest areas, especially with the flowers of Tilia cordata Mill. The rearing of mason bee (Osmia rufa L.) in forest areas is new. The paper presents information on the microbiome of pollen collected from the brood chambers of the solitary bee Osmia rufa L. in various forest biotopes: Tilia cordata Mill, Quercus petraea Liebl. and Prunus avium L. The presence of five groups of bacteria was found in all analyzed pollens were rich in α-Proteabacteria, Actinobacteria and Firmicutes, while β-Proteobacteria and Bacteroides were present in a lower level. Despite the presence of bacteria in the pollen, no increased bee mortality was observed in any of the bee nests of forest biotopes. It was found that the forest environment does not pose a threat to the development of Osmia rufa L. bees.