Transformation of Zirconium Metal-Organic Cages to Metal-Organic Gels.

Zirconium metal-organic cages (Zr-MOCs) that assemble from zirconocence-based clusters and carboxylate-based ligands have been widely used as building blocks for constructing various MOC-based materials with diverse applications because of their high stability and solubilities. However, in this work, we found that the structures of a series of Zr-MOCs are quite flexible when heated at 60 °C in an ,'-dimethylformamide solution, in which they are completely disassembled into fragments and reassembled into amorphous metal-organic gels (MOGs). The transformation mechanism was investigated via proton nuclear magnetic resonance, electrospray ionization mass spectrometry, infrared spectroscopy, X-ray photoelectron spectroscopy, and other techniques, which revealed that cyclopentadiene (CP) breaks out of the [ZrCP(μ-OH)(μ-O)] cluster and remains in solution, whereas the trinuclear [Zr(μ-OH)(μ-O)] cluster dimerizes into a hexanuclear [Zr(μ-OH)(μ-O)] cluster and forms amorphous MOGs with terephthalic acid-based ligands.

Urbanization enhances consumer protist-driven ARGs dissemination in riverine ecosystems.

Despite the emergence of antibiotic resistance genes (ARGs) and antibiotic resistant bacteria (ARBs), how biological inter-trophic interactions, modulated by watershed urbanization, shape the resistome remains unexplored. We collected water samples from the highly urbanized (western: 65 % built land, sewage-affected) and lesser-urbanized (northern: 25 % built land, drinking water source) downstream tributaries of the Jiulong River in southeast China over dry and wet seasons. We utilized metagenomic and amplicon (16S and 18S rDNA) sequencing to investigate the relationships among microeukaryotic algae, consumer protists, bacterial communities, and the resistome.

Unnoticed antimicrobial resistance risk in Tibetan cities unveiled by sewage metagenomic surveillance: Compared to the eastern Chinese cities.

Sewage surveillance is a cost-effective tool for assessing antimicrobial resistance (AMR) in urban populations. However, research on sewage AMR in remote areas is still limited. Here, we used shotgun metagenomic sequencing to profile antibiotic resistance genes (ARGs) and ARG-carrying pathogens (APs) across 15 cities in Tibetan Plateau (TP) and the major cities in eastern China.

Construction of binary metal-organic cage-based materials a "covalently linked plus cage encapsulated" strategy.

A strategy for constructing binary metal-organic cage (MOC)-based materials was developed. The cationic MOCs were covalently linked by organic linkers to a cationic extended network, whereas the anionic MOCs acted as counterions and were encapsulated in the network. Compared with the corresponding unary materials, the binary MOC-based materials exhibited improved porosity and adsorption performance.

Histological and single-nucleus transcriptome analyses reveal the specialized functions of ligular sclerenchyma cells and key regulators of leaf angle in maize.

Leaf angle (LA) is a crucial factor that affects planting density and yield in maize. However, the regulatory mechanisms underlying LA formation remain largely unknown. In this study, we performed a comparative histological analysis of the ligular region across various maize inbred lines and revealed that LA is significantly influenced by a two-step regulatory process involving initial cell elongation followed by subsequent lignification in the ligular adaxial sclerenchyma cells (SCs).

Understanding the molecular mechanism of drought resistance in Shanlan upland rice by transcriptome and phenotype analyses.

Rice (Oryza sativa L.) is an important grain crop worldwide, and drought has become an important factor restricting rice yield. As a unique rice germplasm in Hainan (China), Shanlan upland rice has rich genetic diversity and certain advantage for breeding water-saving and drought-resistance rice.

Research on lncRNA related to drought resistance of Shanlan upland rice.

Background: Drought has become the major abiotic stress that causes losses in rice yields and consequently is one of the main environmental factors threatening food security. Long non-coding RNA (lncRNA) is known to play an important role in plant response to drought stress, while the mechanisms of competing endogenous RNA (ceRNA) in drought resistance in upland rice have been rarely reported.

Results: In our study, a total of 191 lncRNAs, 2115 mRNAs and 32 miRNAs (microRNAs) were found by strand-specific sequencing and small RNA sequencing to be differentially expressed in drought-stressed rice.