Soil microbial community and functional characteristics of different soil layers in karst peak-cluster depressions around FAST telescope.

Aims: This study aims to investigate the diversity, community structure, and functional characteristics of soil microorganisms across different soil layers (0-400 cm) in karst peak-cluster depressions near the Five-hundred-meter Aperture Spherical radio Telescope (FAST) in Guizhou, China. The research addresses the knowledge gap regarding soil microbial communities in this fragile ecosystem, providing insights essential for its sustainable management.

Methods And Results: High-throughput sequencing was employed to analyze bacterial and fungal communities in three soil layers: topsoil (TS, 0-100 cm), middle soil (MS, 100-200 cm), and deep soil (DS, 200-400 cm).

Multivariate analysis of soil particle size distribution and Spatial correlation with soil moisture characteristics in different vegetation types of Mu Us Sandy Land.

In this paper, the fractal mechanism of soil improvement by vegetation was revealed by analyzing the soil characteristics under four typical vegetation types: Salix cheilophila, Caragana korshinskii, Hippophae rhamnoides, and Corethrodendron fruticosum in Mu Us Sandy Land. The results showed that (1) the soil of each vegetation type was mainly composed of sand (> 90%), and the content of clay and silt was less than 10%. CF had the least heterogeneity of soil particles in the 0-120 cm soil layer, HR was uniformly distributed in the 120-200 cm soil layer, and the change trend of particle composition in the 140-200 cm soil layer was consistent.

The close relationship between trace elements (Cu, Fe, Zn, Se, Rb, Si, Cr, and V) and Alzheimer's disease: Research progress and insights.

Alzheimer's disease (AD) is a typical neurodegenerative disorder primarily characterized by the deposition of β-amyloid (Aβ) plaques and the hyperphosphorylation of tau protein, leading to the formation of neurofibrillary tangles (NFTs). These pathological changes are closely associated with the imbalance of trace element homeostasis. Trace elements are extensively involved in fundamental physiological processes, including DNA synthesis, protein synthesis, energy metabolism, and enzymatic reactions, all of which are essential for cognitive function and brain development.

Interfacial Stabilization through MOF-Polymer Core-Shell Design: Ultraefficient, Stable and Recyclable Enzymatic Microreactors.

Enzyme immobilization in metal-organic frameworks (MOFs) faces stability challenges, particularly as exposure to extreme conditions induces structural degradation of the crystalline framework, compromising enzymatic activity. To address this, we developed a novel MOF-poly(acrylic acid) (PAA) hybrid material (MPHM) featuring an "active core-skeleton-shell" architecture. Its hierarchy features a lipase core, a rigid MOF skeleton, and a flexible PAA shell, which synergistically enhances enzyme stability and catalytic efficiency.

Comparative analysis of gut microbiota in free range and house fed yaks from Linzhou County.

Gut microbiota variations in response to environmental and nutritional factors are of great significance as gut microbiota plays an integral role in nutrient metabolism, immunity, health, and disease conditions. In this context, limited studies investigated variations of gut microbiota in response to different feeding systems and environmental conditions. The current study obtained fresh fecal samples from house-fed (LS) and grazing yaks (LF) from Linzhou County.

Genome-Wide Selection Sweep Analysis to Identify Candidate Genes with Black and Brown Color in Tibetan Sibu Yaks.

Although coat color is an important economic phenotype in domesticated yaks (), its genetic basis is not yet fully understood. In this study, a genome-wide selective sweep and high-frequency runs of homozygosity (ROH) identification were performed on 50 yaks with different coat colors to investigate candidate genes (CDGs) related to coat color. The results suggested that 2263 CDGs were identified from the 5% interaction windows of the F and θπ ratio, along with 2801 and 2834 CDGs from black and brown yaks with iHS, respectively.

The quantification of root exudation by an method based on root morphology over three incubation periods.

Investigating the quantity and spatiotemporal dynamics of metabolite release from plant roots is essential if we are to understand the ecological significance of root exudates in the rhizosphere; however, this is difficult to quantify. In the present study, we quantified root exudation rates during three incubation periods (0-24, 24-48, and 48-72 h) and fine roots within four diameter ranges (<0.8, 0.

The myelination-associated G protein-coupled receptor 37 is regulated by Zfp488, Nkx2.2, and Sox10 during oligodendrocyte differentiation.

Oligodendrocyte differentiation and myelination in the central nervous system are controlled and coordinated by a complex gene regulatory network that contains several transcription factors, including Zfp488 and Nkx2.2. Despite the proven role in oligodendrocyte differentiation little is known about the exact mode of Zfp488 and Nkx2.

Targeting optimal power consumption: Optimizing operational parameters for orchard furrowing and fertilizing machine.

In response to the problem of excessive power consumption during the furrowing operation of orchard furrowing fertilizer machines, an optimization experiment of furrowing operation parameters for orchard furrowing fertilizer machine was conducted based on discrete element simulations. This research focused on the impact of furrowing device operation parameters on furrowing power consumption under full machine operating conditions. Firstly, a kinematics analysis of the soil granules during cutting was done.

Oligodendrocytes in central nervous system diseases: the effect of cytokine regulation.

Cytokines including tumor necrosis factor, interleukins, interferons, and chemokines are abundantly produced in various diseases. As pleiotropic factors, cytokines are involved in nearly every aspect of cellular functions such as migration, survival, proliferation, and differentiation. Oligodendrocytes are the myelin-forming cells in the central nervous system and play critical roles in the conduction of action potentials, supply of metabolic components for axons, and other functions.

First-principle study on the photoelectric properties of monolayer h-BN under different strain types.

Context: Two-dimensional materials are a new and promising research field in materials science. This is mainly attributed to their unique photoelectric and chemical properties. In addition to possessing unique optoelectronic and chemical properties, two-dimensional materials also have important application prospects in the field of field-effect devices.

Impacts of re-vegetation on soil water dynamics in a semiarid region of Northwest China.

Understanding how vegetation (shrub) cover in drylands affects local-to-regional soil water dynamics and associated water balances is of immense importance because of the abundance of afforestation projects worldwide. Vegetation's role in the control of soil water presents a particular challenge to soil water storage (SWS) management in the drylands of China. To address this knowledge gap, we conducted a two-year study in the Mu Us Desert of northwest China.

Vegetation-cover control of between-site soil temperature evolution in a sandy desertland.

Vegetation has an important influence on soil temperature (ST). However, the possible effects of surface vegetation on ST and their feedback on microclimate remain uncertain due to the lack of in-situ and long-term environmental records, especially for arid and semiarid regions of the world. A continuous, two-year study was implemented over a bare sand dune (BF) and two scrub-vegetation sites of variable cover in the Mu Us Desert of northwest China.

Role of Gltp in Maturation of Oligodendrocytes Under the Regulation of Nkx2.2.

Myelin, a lipid-enriched multi-layer membrane structure, allows for rapid long-distance saltatory conduction of neuronal impulses. Although glycolipids are the predominant types of lipids in the myelin bilayer, the role of glycolipid transfer protein (GLTP), which selectively mediates the transfer of various glycolipids between phospholipid bilayer, in myelin development and maintenance remains unknown at present. In this study, we identified Gltp as the key lipid metabolism gene in myelin-forming oligodendrocytes (OLs) through integrated omics analysis across independent transcriptomic and single-cell sequencing studies.

Preparation and Antibacterial Properties of a Composite Fiber Membrane Material Loaded with Cationic Antibacterial Agent by Electrospinning.

Microbial infections due to bacteria, viruses, and molds are a serious threat to both human life and the health of other organisms. To develop inexpensive, easy-to-prepare, efficient, and portable nano-antibacterial materials, as well as to explore the antibacterial prospects of cationic antibacterial agents, in this work, six different membrane materials were prepared by the electrostatic spinning method and characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and Fourier transform infrared (FT-IR). The materials were tested for antimicrobial properties using a modified AATCC100-200 test method.

Dynamic alterations in yak () rumen microbiome in response to seasonal variations in diet.

Rumen microorganisms play important roles in the healthy growth of yaks. This study investigated changes in yak rumen microbiome during natural grazing at the warm seasons and supplementary feeding at cold seasons. High-throughput sequencing of 16S rRNA and metagenome analysis were conducted to investigate the structures and functions of yak rumen microbial communities.

Genome-wide comparison of DNA methylation patterns between yak and three cattle strains and their potential association with mRNA transcription.

Yak has evolved specific adaptative mechanisms to high-altitude environment. Up to date, only a few studies reported the DNA methylation in yak. In the present study, genome-wide DNA methylome and transcriptome profiles in lung, mammary, and biceps brachii muscle tissues were compared between yak and three cattle breeds (Tibetan cattle, Sanjiang cattle, and Holstein cattle).

Comparison of rumen bacterial communities between yaks () and Qaidam cattle () fed a low protein diet with different energy levels.

The yak (), an indigenous bovine on the Qinghai-Tibetan plateau (QTP), is reported to digest low quality forage to a greater extent and to require less protein and energy for maintenance than the introduced Qaidam cattle (). Ruminal bacteria play a major role in feed degradation, and therefore, we hypothesized that ruminal bacteria composition would differ between yaks and cattle, and confer an advantage to yaks for poor quality diets. To test our hypothesis, we determined the ruminal bacteria profiles, rumen fermentation parameters, and enzyme activities in these bovine species consuming a low-protein diet differing in energy level.

Carbazoles in Oils, and Their Application in Identifying Oil Filling Pathways in Eocene Syn-Rift Fault Blocks in the Dongpu Depression, Bohai Bay Basin, East China.

Carbazoles and dimethyl carbazoles (DMCs) are important nitrogen heterocyclic aromatic compounds in oils and sedimentary rock extracts. Based on both migration fractionation effects and differences in the thermal stability of their isomers, carbazoles can be used to trace oil migration orientations and filling pathways. Molecular biomarker compositions indicate that all oils and oil-bearing sand extracts in the Eocene fault-blocked reservoirs of the Huzhuangji area (Western Slope Belt) of the Dongpu Depression (Bohai Bay Basin, East China) belong to a single oil population.

Comparison of Rumen Fermentation Parameters and Microbiota of Yaks From Different Altitude Regions in Tibet, China.

Rumen microbiota are closely linked to feed utilization and environmental adaptability of ruminants. At present, little is known about the influence of different extreme environments on the rumen microbiota of yaks. In this study, 30 ruminal fluid samples from 30 healthy female yaks (average 280 kg of BW) in 5-8 years of life were collected from three regions in Tibet, China, and compared by gas chromatography and high-throughput sequencing.

Effect of Supplementary Levels of Rumen-Protected Lysine and Methionine on Growth Performance, Carcass Traits, and Meat Quality in Feedlot Yaks ().

Yak, a unique bovine species on the Qinghai-Tibetan Plateau, has provided pastoralists with the basic materials of production and life for thousands of years. Existing literature showed that yak meat is of high nutritional value for humans whereas the growth performance is relatively low. As it has been demonstrated, lysine and methionine are the two key limiting amino acids in ruminants.