Alternative treatment for the highly prevalent Helicobacter pylori infection is imperative due to rising antibiotic resistance. We unexpectedly discovered that the anti-H. pylori component in garlic is hydrogen polysulfide (HS, n⩾2), not organic polysulfides.
View Article and Find Full Text PDFNitric oxide (NO) and hydrogen sulphide (HS) play important roles in plant growth, development and environmental adaptation. Currently, there is few information on the mechanism by which HS may be involved in NO-induced salt tolerance. In this study, cucumber was used to investigate the role of NO and HS and their relationship under salt stress.
View Article and Find Full Text PDFHydrogen peroxide, a byproduct of the oxidase catalytic process, significantly compromises the enzymatic activity and stability of natural oxidases, thereby restricting their industrial applications. To address this challenge, we developed a coassembly system combining a natural oxidase with a peptide-heme (PepHeme) nanozyme possessing catalase-like activity on a ferritin platform. This system, demonstrated by using natural choline oxidase and galactose oxidase as models, forms an oxidase-catalase cascade reaction.
View Article and Find Full Text PDFOne of the main environmental stresses that considerably reduced vegetable yields are low temperature stress. Brassinosteroids (BRs) is essential for controlling a number of physiological functions. Protein S-nitrosylation is thought to be a crucial process in plants that use NO to carry out their biological functions.
View Article and Find Full Text PDFHydrogen gas (H) is an important molecular messenger in animal and plant cells and is involved in various aspects of plant processes, including root organogenesis induction, stress tolerance and postharvest senescence. This study investigated the effect of H fumigation on the quality of Lanzhou lily scales. The results indicated the H remarkably declined the color variation and browning degree in Lanzhou lily scales by suppressing the activity of phenylalanine ammonia-lyase (PAL), peroxidase (POD) and polyphenol oxidase (PPO).
View Article and Find Full Text PDFBoth strigolactones (SLs) and nitric oxide (NO) are regulatory signals with diverse roles during stress responses. At present, the interaction and mechanism of SLs and NO in tomato salt tolerance remain unclear. In the current study, tomato 'Micro-Tom' was used to study the roles and interactions of SLs and NO in salinity stress tolerance.
View Article and Find Full Text PDFIn this study, the effect of sodium dodecyl sulfonate (SDS) on the foam stability of dodecylamine (DDA) and on its adsorption configuration at the gas-liquid interface was investigated. Froth stability experiments, surface tension measurements, time-of-flight secondary-ion mass spectrometry measurements, and molecular dynamics simulation calculations were performed in this investigation. The results revealed that the foam stability of DDA solution was extremely strong, and the addition of SDS could decrease the foam stability when the concentration of DDA was less than a certain value.
View Article and Find Full Text PDFClinical decision support using data mining techniques offers more intelligent way to reduce the decision error in the last few years. However, clinical datasets often suffer from high missingness, which adversely impacts the quality of modelling if handled improperly. Imputing missing values provides an opportunity to resolve the issue.
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