Metabolic crosstalk between roots and rhizosphere drives alfalfa decline under continuous cropping.

Considerable biological decline of continuously cropped alfalfa may be tightly linked to rhizosphere metabolism. However, plant-soil feedbacks and age-related metabolic changes in alfalfa stands remain unexplored. The aim of this study was to identify the linkages of rhizosphere and root metabolites, particularly autotoxins and prebiotics, to alfalfa decline under continuous cropping.

Total Syntheses of Diepoxy-Kaurane Diterpenoids Enabled by a Bridgehead-Enone-Initiated Intramolecular Cycloaddition.

Here, we report the enantioselective total syntheses of four diepoxy--kaurane diterpenoids including (-)-Macrocalin B, (-)-Acetyl-macrocalin B, and (-)-Isoadenolin A and the revised structure of (-)-Phyllostacin I, which hinges on the strategic design of a regioselective and stereospecific trapping of a highly reactive [3.2.1]-bridgehead enone intermediate via a tethered intramolecular Diels-Alder reaction.

A Lionfish-Skin-Inspired Intrinsic Antifouling Coating for Full-Ocean-Depth up to 7730 Meters.

As marine equipment advances from shallow to deep-sea environments, the demand for high-performance antifouling materials continues to increase. The lionfish, a species inhabiting both deep-sea and shallow coral reefs, prevents fouling organism adhesion via its smooth, mucus-covered skin, which contains antimicrobial peptides. Inspired by lionfish skin, this work integrates zwitterionic segments with hydration-based fouling-release properties and the furan oxime ester structure with intrinsic antibacterial activity to develop a silicone-based antifouling coating capable of operating from shallow to deep-sea environments.

Lactylation-driven TNFR2 expression in regulatory T cells promotes the progression of malignant pleural effusion.

Background: Although tumor necrosis factor receptor 2 (TNFR2) has been recognized as an attractive next-generation candidate target for cancer immunotherapy, the factors that regulate the gene expression and their mechanistic effects on tumor-infiltrating regulatory T cells (Treg cells) remain poorly understood.

Methods: Single-cell RNA sequencing analysis was employed to analyze the phenotypic and functional differences between TNFR2 Treg cells and TNFR2 Treg cells. Malignant pleural effusion (MPE) from humans and mouse was used to investigate the potential mechanisms by which lactate regulates TNFR2 expression.

OTUD5 Protects Dopaminergic Neurons by Promoting the Degradation of α-Synuclein in Parkinson's Disease Model.

Defective clearance and accumulation of α-synuclein (α-Syn) is the key pathogenic factor in Parkinson's disease (PD). Recent studies emphasize the importance of E3 ligases in regulating the degradation of α-Syn. However, the molecular mechanisms by which deubiquitinases regulate α-Syn degradation are scarcely studied.