Plants' Overexpression of the MYB Transcription Factor in the Face of Stress Hazards Enhances Salt and Cold Tolerance.

'Beta' ( × ) is a vine fruit tree of the genus Vitis which is a cross between American and riparian grapes. In the current situation of grape production in northern regions, cold, drought, and salinity are important bottlenecks restricting its development, while some grape rootstocks with excellent traits show the disadvantage of poor resilience. 'Beta' ( × ), one of the most extensively utilized rootstocks in viticulture, has demonstrated remarkable resilience to adverse conditions.

Prevalence and risk factors of tuberculosis among people living with HIV/AIDS in China: a systematic review and meta-analysis.

Objective: To estimate the prevalence and risk factors associated with tuberculosis (TB) among people living with human immunodeficiency virus (HIV) infection/acquired immunodeficiency syndrome (AIDS) in China.

Methods: A systematic review and meta-analysis were conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines. After the literature was screened based on the inclusion and exclusion criteria, STATA version 17.

Lewis acid mediated reactions of zirconacyclopentenes with aldehydes affording homoallyl ketones via oppenauer-type oxidation.

Three different components involving alkynes, ethylene, and aldehydes were selectively integrated in a one-pot procedure to afford homoallyl ketones in good yields, via an effective combination of zirconocene-mediated C-C bond forming reactions and Lewis acid mediated organic transformation. Mechanistic studies revealed that a formal Oppenauer oxidation of seven-membered oxazirconacycles, generated in situ from the reactions of zirconacyclopentenes and aldehydes, was promoted by Lewis acid-aldehyde adducts. As a whole, the first aldehyde was incorporated into the product and the second aldehyde was reduced to an alcohol.

[Isolation, purification and structural characterization of active polysaccharides from the mycelium of Ganoderma lucidum].

The active polysaccharides from the mycelium of Ganoderma lucidum were fractioned by DEAE-Sephadex and DEAE-Cellulose. Through repeated isolation and purification, two polysaccharides, GLMB0 and GLMB1, were finally obtained. Their structures were characterized by chemical and spectral methods.

Lewis Acid mediated reactions of zirconacyclopentadienes with aldehydes: one-pot synthetic route to indene and cyclopentadiene derivatives from aldehydes and benzyne or alkynes.

One-pot procedures for the preparation of highly substituted indenes, tetrahydroindenes, and cyclopentadienes have been developed by using a combination of zirconocene-mediated Cbond;C-bond-forming reactions with Lewis acid mediated activation of carbonyl groups. The carbonyl groups of aldehydes were deoxygenated in the reaction and behaved formally as a one-carbon unit. A variety of Lewis acids were checked and showed different reactivities in this reaction.

One-pot synthetic route to homoallylketones via selective combination of alkyne, ethylene and aldehyde mediated by AlCl3 and zirconocene.

Zirconacyclopentenes generated in situ from alkynes and ethylene undergo selective reaction with aldehydes to afford homoallylketones in yields exceeding 70% in the presence of AlCl3.