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Green manure-induced shifts in nematode communities associated with soil bacterial and fungal biomes. 绿肥诱导的与土壤细菌和真菌生物群落相关的线虫群落变化。
IF 3.9 2区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2025-12-13 DOI: 10.1038/s41598-025-31442-y
Atsuya Sudo, Daisuke Yoshimura, Hiroyuki Daimon, Shusei Sato, Erika Asamizu

Green manures are widely used to enhance soil health and suppress plant-parasitic nematodes, and their effects on the broader soil food web have been studied. Beyond direct suppression, the role of green manures in supporting and sustaining soil food webs has attracted increasing attention. In this study, we evaluated the use of DNA sequencing to identify various nematode genera and their microbial associates in a field trial using oat (Avena sativa) and hairy vetch (Vicia villosa) as green manures. Nematode index analysis revealed that the oat treatment promoted a structured nematode community. Furthermore, the nematode community structure observed in the oat treatment was linked to specific bacterial and fungal genera. Several beneficial fungi were identified, indicating that oats, used as a green manure, actively enhanced the microbiome. Our results showed that enriching the micro-food web through organic fertilizers can help in the detection of beneficial microorganisms, with the nematode index serving as a potential indicator.

绿色肥料被广泛用于改善土壤健康和抑制植物寄生线虫,其对更广泛的土壤食物网的影响已被研究。除了直接抑制外,绿色肥料在支持和维持土壤食物网中的作用越来越受到关注。在这项研究中,我们评估了在田间试验中使用DNA测序来鉴定各种线虫属及其微生物伴生物,该试验以燕麦(Avena sativa)和毛豌豆(Vicia villosa)作为绿色肥料。线虫指数分析表明,燕麦处理促进了线虫群落的结构化。此外,在燕麦处理中观察到的线虫群落结构与特定的细菌和真菌属有关。发现了几种有益真菌,表明燕麦作为绿肥,积极地增强了微生物群。本研究结果表明,通过有机肥丰富微食物网有助于检测有益微生物,线虫指数可作为潜在指标。
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引用次数: 0
Serum prolactin level in male type 2 diabetes mellitus patients at the University of Gondar Comprehensive Specialized Hospital, Northwest Ethiopia, 2024. 2024年埃塞俄比亚西北部贡达尔大学综合专科医院男性2型糖尿病患者血清催乳素水平
IF 3.9 2区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2025-12-13 DOI: 10.1038/s41598-025-32477-x
Arega Zenaw, Elias Chane, Getnet Fetene, Sintayehu Admas, Nigusie Alemu, Mitkie Tigabie, Belete Biadgo, Abebaw Worede

The anterior pituitary gland secretes the peptide hormone prolactin, which is important for lactation, reproductive health, and metabolic regulation. Its secretion is primarily regulated by dopamine and also its elevated level is known as hyperprolactinemia. The aim of this study was to assess serum prolactin level in T2DM patients at the University of Gondar comprehensive specialized hospital. A comparative cross-sectional study was conducted from June 27 to August 20, 2024 involving 330 study participants selected using systematic random sampling. Of these, 165 were male patients with T2DM and 165 were apparently healthy controls. Sociodemographic, behavioral, and clinical data were measured by structured questionnaires. Hormonal parameters, Fasting blood sugar and lipid profiles were measured by chemiluminescent immunoassay and spectrophotometric principles respectively. Data were analyzed using SPSS version 25. Descriptive statistics, independent t-tests, and binary logistic regression were performed with significance set at p < 0.05. The prevalence of hyperprolactinemia was 9.1% in T2DM patients and 6.1% in the control group. A statistically significant difference in mean serum prolactin level was observed between T2DM and control group (7.79 ± 2.9 vs. 6.81 ± 3.1, p-value = 0.004) respectively. Hyperprolactinemia was more likely to occur in study individuals with high dietary diversity (AOR = 3.213, 95% CI: 1.253-8.239, P-value = 0.015). The incidence of hyperprolactinemia increases by 1.009 (95% CI: 1.001-1.018; P-value = 0.035) for every unit rise in FBS (1 mg/dl). In conclusion, the mean serum prolactin level was significantly higher among T2DM patients compared to healthy control groups. In addition, the prevalence of hyperprolactinemia was higher in T2DM patients than the control groups. Dietary diversity and elevated FBS were a significant predictors of hyperprolactinemia. So, the healthcare providers should consider routine screening of serum prolactin level in patients diagnosed with T2DM.

垂体前叶分泌肽激素催乳素,对泌乳、生殖健康和代谢调节具有重要作用。它的分泌主要受多巴胺的调节,其水平升高被称为高泌乳素血症。本研究的目的是评估贡达尔大学综合专科医院T2DM患者的血清催乳素水平。采用系统随机抽样方法,于2024年6月27日至8月20日对330名研究对象进行了比较横断面研究。其中,165名男性T2DM患者和165名明显健康的对照组。社会人口学、行为和临床数据通过结构化问卷进行测量。分别用化学发光免疫法和分光光度法测定激素参数、空腹血糖和血脂。数据分析采用SPSS version 25。进行描述性统计、独立t检验和二元逻辑回归,显著性设置为p
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引用次数: 0
Phytochemical composition and biological activities of selected essential oils and their discrimination through principal component analysis. 选定精油的植物化学成分、生物活性及其主成分分析鉴别。
IF 3.9 2区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2025-12-13 DOI: 10.1038/s41598-025-32445-5
Musa Türkmen, Sevgi Gezici, Faruk Karahan

The present study aimed to determine the phytochemical characterization, anticancer and antioxidant activities of essential oils (EOs) obtained from nine commonly used medicinal and aromatic plants (MAPs) including Cymbopogon citratus (DC) Stapf (Poaceae), Cistus creticus L. (Cistaceae), Foeniculum vulgare Mill. (Apiaceae), Laurus nobilis L. (Lauraceae), Myrtus communis L. (Myrtaceae), Pinus cembra L. (Pinaceae), Echinacea purpurea (L.) Moench, Helichrysum arenarium (L.) Moench, and Inula viscosa (L.) Aiton (Asteraceae) taxa from Türkiye. The chemical composition of the EOs was identified using gas chromatography-mass spectrometry (GC-MS), and their antioxidant activities were evaluated using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) free radical scavenging methods. In addition, the anticancer potential of the EOs were assessed using MTT assay against human cell lines, including hepatocellular carcinoma (HepG2), gastric carcinoma (NCI-N87), breast adenocarcinoma (MCF-7), and human prostate carcinoma (LNCaP clone FGC-Luc2) cancer cells, as well as non-cancerous human umbilical vein endothelial cells (HUVECs). The antioxidant activities of the EOs varied from 35.21 to 79.12%. Consistent with their antioxidant activities, the anticancer activities of the EOs of C. citratus, L. nobilis and, C. creticus exhibited significantly higher anticancer activities compared to the others. However, almost all EOs were found to inhibit cell viability and induce apoptosis in cancer cells. Among the tested concentrations, the highest anticancer activity was observed against against MCF-7 cells, followed by NCI-N87, LNCaP, and HepG2 cancer cells, with the IC50 values ranging from 15.10 ± 1.00 to 78.12 ± 0.32 µg/mL, respectively. The major components of the EOs distilled from studied MAPs were found as anethole, borneol, carvacrol, citral, α-pinene, eucalyptol and β-citral at different concentrations in the EOs. Overall, it can be clearly concluded that the EO samples distilled from studied MAPs contain valuable bioactive compounds and accordingly exhibit remarkable biological activities.

本研究旨在研究九种常用药用和芳香植物(MAPs),包括Cymbopogon citratus (DC) Stapf (Poaceae)、Cistus creticus L. (cisstaceae)、Foeniculum vulgare Mill的植物化学特性、抗癌和抗氧化活性。(蜂科),月桂(樟科),桃金娘(桃金娘科),松柏(松科),紫锥菊(L.)Moench,蜡菊(L.)Moench和Inula viscosa (L.)来自台湾的艾属(菊科)分类群。采用气相色谱-质谱联用技术(GC-MS)鉴定其化学成分,采用2,2-二苯基-1-吡啶肼(DPPH)和2,2'-氮基-双(3-乙基苯并噻唑-6-磺酸)(ABTS)自由基清除法测定其抗氧化活性。此外,利用MTT试验评估了EOs对人细胞系的抗癌潜力,包括肝细胞癌(HepG2)、胃癌(NCI-N87)、乳腺腺癌(MCF-7)、人前列腺癌(LNCaP克隆FGC-Luc2)癌细胞以及非癌性人脐静脉内皮细胞(HUVECs)。其抗氧化活性在35.21% ~ 79.12%之间。与抗氧化活性一致的是,柑桔、枸杞和枸杞的EOs具有较强的抗癌活性。然而,几乎所有的EOs都被发现能抑制细胞活力并诱导癌细胞凋亡。对MCF-7、NCI-N87、LNCaP和HepG2癌细胞的抑制作用最强,IC50值分别为15.10±1.00 ~ 78.12±0.32µg/mL。从所研究的map中提取的精油主要成分为不同浓度的茴香脑、冰片、香芹酚、柠檬醛、α-蒎烯、桉叶精油和β-柠檬醛。综上所述,从所研究的map中提取的EO样品含有有价值的生物活性化合物,因此具有显著的生物活性。
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引用次数: 0
Efficient Heat Dissipation Performance of Multifunctional Wearable Pressure Sensors Based on Metal–Organic Framework Composites 基于金属-有机框架复合材料的多功能可穿戴压力传感器的高效散热性能
IF 5.2 3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2025-12-13 DOI: 10.1111/nyas.70143
Bin Zhang, Wenhong Sun
Wearable pressure sensors have become essential for monitoring human health and facilitating human–machine interaction. However, pressure sensors generate heat during operation, which may reduce their service life and lead to localized burns due to overheating. To address these issues, we employ metal–organic frameworks (MOFs) to dope pressure sensors and investigate their effects on device performance. Here, wearable pressure sensors based on MOF/thermoplastic polyurethane/reduced graphene oxide (MOF/TPU/GAFF) are developed for rapid heat dissipation. We selected four MOFs with high thermal conductivity (Zr–MOF, Mn–MOF, MOF‐5, and ZIF‐8) and mixed them into a TPU/GAFF fiber film. The enhanced thermal conductivity of the modified TPU/GAFF matrix contributes to improved heat dissipation performance in the devices. Among the tested materials, the doped ZIF‐8 composite film exhibits the most effective heat dissipation, with a heat exchange capacity 1.56 times higher than that of the undoped ZIF‐8 composite film. Furthermore, the incorporation of ZIF‐8 significantly enhances sensor sensitivity. The ZIF‐8‐based sensor demonstrates optimal performance, achieving a sensitivity of 0.27 kPa −1 within the pressure range of 0–50 kPa, representing a 595.2% improvement compared to the sensor without ZIF‐8. Overall, the sensor provides a wearable electronic platform with strong application potential in monitoring human health and speech recognition.
可穿戴压力传感器已成为监测人体健康和促进人机交互的必要条件。然而,压力传感器在工作过程中会产生热量,这可能会减少它们的使用寿命,并因过热而导致局部烧伤。为了解决这些问题,我们采用金属有机框架(mof)来掺杂压力传感器,并研究它们对设备性能的影响。在这里,开发了基于MOF/热塑性聚氨酯/还原氧化石墨烯(MOF/TPU/GAFF)的可穿戴压力传感器,以实现快速散热。我们选择了四种具有高导热性的MOF (Zr-MOF, Mn-MOF, MOF‐5和ZIF‐8),并将它们混合到TPU/GAFF纤维薄膜中。改进后的TPU/GAFF矩阵的热导率提高有助于改善器件的散热性能。在测试材料中,掺杂ZIF‐8复合膜的散热效果最好,其换热能力是未掺杂ZIF‐8复合膜的1.56倍。此外,ZIF‐8的掺入显著提高了传感器的灵敏度。基于ZIF‐8的传感器表现出最佳性能,在0-50 kPa的压力范围内实现了0.27 kPa−1的灵敏度,与没有ZIF‐8的传感器相比,提高了595.2%。总的来说,该传感器在人体健康监测和语音识别方面提供了一个具有强大应用潜力的可穿戴电子平台。
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引用次数: 0
Sequestration of the phagocyte metabolite itaconate by Pseudomonas aeruginosa RpoN promotes successful pulmonary infection. 铜绿假单胞菌RpoN对吞噬细胞代谢物衣康酸的隔离促进肺部感染的成功。
IF 16.6 1区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2025-12-13 DOI: 10.1038/s41467-025-67153-1
Ayesha Z Beg,Zihua Liu,Ying-Tsun Chen,Absar Talat,Griffin Gowdy,Jake Miller,Lindsey Florek,Lars Dietrich,Chu Wang,Ian Lewis,Tania Wong Fok Lung,Sebastian Riquelme,Alice Prince
Inhaled opportunistic pathogens such as Pseudomonas aeruginosa actively modify gene expression to meet the challenges of a new environment. In the infected airway the bacteria must respond to the immunometabolite itaconate, which is abundantly produced by macrophages and has anti-inflammatory and anti-oxidant functions that protect the host from airway damage and causes toxicity to bacteria. As a dicarboxylate that targets cysteine residues, itaconate can modify both bacterial and host proteins often altering metabolic activity. We demonstrate that itaconate promotes a global metabolic response in P. aeruginosa by enhancing the activity of the major alternative transcription factor RpoN. Itaconate is actively transported into the bacteria, induces σ54 rpoN expression and covalently binds cysteine residues 218 and 275 on RpoN helping to neutralize its toxicity. The S-itaconated RpoN exhibits a gain of function driving increased glucose catabolism and enhanced utilization of the bioenergetically efficient Entner-Doudoroff pathway. Thus, the accumulation of itaconate in the infected airway promotes the adaptation of P. aeruginosa to the lung by optimizing its metabolic activity and ability to cause pneumonia.
吸入条件致病菌如铜绿假单胞菌积极改变基因表达以应对新环境的挑战。在被感染的气道中,细菌必须对免疫代谢物衣康酸做出反应,衣康酸由巨噬细胞大量产生,具有抗炎和抗氧化功能,保护宿主免受气道损伤,并对细菌产生毒性。衣康酸作为一种以半胱氨酸残基为靶点的二羧酸盐,可以修饰细菌和宿主的蛋白质,经常改变代谢活性。我们证明衣康酸通过增强主要替代转录因子RpoN的活性来促进铜绿假单胞菌的全球代谢反应。衣康酸被主动转运到细菌中,诱导σ54 rpoN表达,并与rpoN上的半胱氨酸残基218和275共价结合,有助于中和其毒性。S-itaconated RpoN显示出功能的增加,驱动葡萄糖分解代谢的增加和生物能量高效的enterner - doudoroff通路的利用。因此,衣康酸在感染气道中的积累通过优化P. aeruginosa的代谢活性和引起肺炎的能力,促进了P. aeruginosa对肺部的适应。
{"title":"Sequestration of the phagocyte metabolite itaconate by Pseudomonas aeruginosa RpoN promotes successful pulmonary infection.","authors":"Ayesha Z Beg,Zihua Liu,Ying-Tsun Chen,Absar Talat,Griffin Gowdy,Jake Miller,Lindsey Florek,Lars Dietrich,Chu Wang,Ian Lewis,Tania Wong Fok Lung,Sebastian Riquelme,Alice Prince","doi":"10.1038/s41467-025-67153-1","DOIUrl":"https://doi.org/10.1038/s41467-025-67153-1","url":null,"abstract":"Inhaled opportunistic pathogens such as Pseudomonas aeruginosa actively modify gene expression to meet the challenges of a new environment. In the infected airway the bacteria must respond to the immunometabolite itaconate, which is abundantly produced by macrophages and has anti-inflammatory and anti-oxidant functions that protect the host from airway damage and causes toxicity to bacteria. As a dicarboxylate that targets cysteine residues, itaconate can modify both bacterial and host proteins often altering metabolic activity. We demonstrate that itaconate promotes a global metabolic response in P. aeruginosa by enhancing the activity of the major alternative transcription factor RpoN. Itaconate is actively transported into the bacteria, induces σ54 rpoN expression and covalently binds cysteine residues 218 and 275 on RpoN helping to neutralize its toxicity. The S-itaconated RpoN exhibits a gain of function driving increased glucose catabolism and enhanced utilization of the bioenergetically efficient Entner-Doudoroff pathway. Thus, the accumulation of itaconate in the infected airway promotes the adaptation of P. aeruginosa to the lung by optimizing its metabolic activity and ability to cause pneumonia.","PeriodicalId":19066,"journal":{"name":"Nature Communications","volume":"1 1","pages":""},"PeriodicalIF":16.6,"publicationDate":"2025-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145732794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multi-omics analysis reveals the effects of prenatal nutrition on carcass-related tissues in beef cattle. 多组学分析揭示了产前营养对肉牛胴体相关组织的影响。
IF 3.9 2区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2025-12-13 DOI: 10.1038/s41598-025-31856-8
Guilherme Henrique Gebim Polizel, Ángela Cánovas, Wellison J S Diniz, German D Ramírez-Zamudio, Saulo da Luz E Silva, Carl R Dahlen, Arícia Christofaro Fernandes, Barbara Carolina Teixeira Prati, Édison Furlan, Gabriela do Vale Pombo, Miguel Henrique de Almeida Santana

This study evaluated the long-term metabolic effects of prenatal nutrition in Nellore bulls. Pregnant cows (n = 126) received mineral supplementation only (NP), protein-energy supplementation during the last trimester (PP), or supplementation throughout pregnancy (FP). At slaughter, longissimus (muscle and meat) and subcutaneous fat samples from the offspring were collected for transcriptomics and metabolomics analyses. Data were reduced using Weighted Gene Co-expression Network Analysis, followed by functional enrichment, and then integrated via Spearman's correlations and holistic pathway analysis. Distinct molecular patterns emerged across prenatal nutrition treatments, although all groups influenced energy metabolism and cellular processes. The NP group was strongly associated with protein and lipid metabolism, highlighted by PPAR and sphingolipid signaling pathways, and key hub components including CNOT4 and tryptophan. In contrast, PP and FP groups were more closely linked to immune function, stress resilience, with enrichment of NF-kB signaling, cortisol synthesis, and hub components including TIE1, YWHAZ, carnitine, and glutaconylcarnitine. Shared transcriptome-metabolome modules between groups displayed inverse correlations, suggesting potential antagonistic effects driven by maternal diet. Overall, these results indicate that prenatal nutrition shapes key metabolic processes in muscle, meat, and fat, offering insights to enhance meat quality and production through maternal feeding strategies.

本研究评估了产前营养对Nellore公牛的长期代谢影响。126头妊娠奶牛(n = 126)分别在妊娠后期补充矿物质(NP)、蛋白质能量补充(PP)和整个妊娠期补充(FP)。屠宰时,收集子代最长肌(肌肉和肉)和皮下脂肪样本进行转录组学和代谢组学分析。使用加权基因共表达网络分析减少数据,然后进行功能富集,然后通过Spearman相关和整体途径分析进行整合。不同的分子模式出现在产前营养治疗,尽管所有组影响能量代谢和细胞过程。NP组与蛋白质和脂质代谢密切相关,突出表现为PPAR和鞘脂信号通路,以及包括cnnot4和色氨酸在内的关键枢纽成分。相比之下,PP和FP组与免疫功能、应激恢复能力更密切相关,NF-kB信号、皮质醇合成和枢纽成分(包括TIE1、YWHAZ、肉毒碱和glutaconylcarnitine)富集。组间共享的转录组-代谢组模块显示出负相关,表明母体饮食驱动了潜在的拮抗作用。总的来说,这些结果表明,产前营养决定了肌肉、肉类和脂肪的关键代谢过程,为通过母亲喂养策略提高肉类质量和产量提供了见解。
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引用次数: 0
Photoelectrochemical water splitting cells at elevated pressure using BiVO4 and platinized III-V semiconductor photoelectrodes. 采用BiVO4和镀铂III-V半导体光电极的高压光电化学水分解电池。
IF 16.6 1区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2025-12-13 DOI: 10.1038/s41467-025-67294-3
Feng Liang,Heejung Kong,Diwakar Suresh Babu,Roel van de Krol,Fatwa F Abdi
Direct production of pressurized green hydrogen via photoelectrochemical water splitting reduces the need for mechanical compression and mitigates bubble-related losses. However, existing demonstrations have been limited to atmospheric pressure. Here, we bridge this gap by designing, constructing, and testing a high-pressure flow cell for photoelectrochemical water splitting using two configurations. In a back-illuminated BiVO4-based photoelectrochemical cell, increased pressure suppresses bubble evolution and alleviates photocurrent saturation under concentrated sunlight: at 10 suns, the photocurrent rises from 3× at 1 bar to ~7× at 5 bar. Direct operando imaging of the electrode surfaces confirms that this improvement comes primarily from suppressed bubble evolution. Conversely, a front-illuminated platinized triple-junction III-V-based photoelectrochemical cell shows limited pressure dependence up to 8 bar due to its dispersed catalyst and long carrier diffusion length. These findings highlight the differing response of photoelectrochemical devices to elevated pressure and demonstrate a viable pathway toward scalable, high-pressure solar-driven hydrogen production.
通过光电化学水分解直接生产加压绿色氢,减少了机械压缩的需要,减轻了与气泡相关的损失。然而,现有的演示仅限于大气压力。在这里,我们通过设计、构建和测试一种使用两种配置用于光电化学水分解的高压流动电池来弥补这一差距。在背光bivo4基光电化学电池中,增加的压力抑制了气泡的演化,减轻了集中阳光下的光电流饱和:在10个太阳下,光电流从1 bar时的3倍上升到5 bar时的7倍。电极表面的直接operando成像证实,这种改善主要来自抑制气泡的演变。相反,正面照明的镀铂三结iii - v基光电化学电池由于其分散的催化剂和较长的载流子扩散长度,其压力依赖性有限,最高可达8 bar。这些发现强调了光电化学器件对高压的不同响应,并展示了可扩展的高压太阳能驱动制氢的可行途径。
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引用次数: 0
Co-sputtered CuNi heteroatomic electrocatalyst for enhanced 5-hydroxymethylfurfural selective electrochemical conversion. 增强5-羟甲基糠醛选择性电化学转化的共溅射CuNi杂原子电催化剂。
IF 3.9 2区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2025-12-13 DOI: 10.1038/s41598-025-32621-7
Moumita Dikshit, Baleeswaraiah Muchharla, Luz Vazquez Rivera, Kapil Kumar, Sunita Sanwaria, Kishor Kumar Sadasivuni, Abdennaceur Karoui, Sandeep Kumar, Adetayo Adedeji, Bijandra Kumar

The electrochemical conversion of biomass-derived 5-hydroxymethylfurfural (HMF) represents a promising, economically viable, and environmentally sustainable approach for producing value-added chemicals using renewable energy and in situ hydrogen generated through water electrolysis. However, the electrochemical hydrogenation (ECH) of HMF remains challenging due to the inherently low catalytic activity and selectivity of the electrodes, compounded by competition with the kinetically favored hydrogen evolution reaction (HER) in aqueous electrolytes. In this work, we demonstrate that CuxNi100-x heteroatomic thin films, fabricated via direct current (DC) magnetron co-sputtering, achieve a more than one order of magnitude increase in the HMF to 2,5-Bis-hydroxymethylfuran (BHMF) conversion rate, with nearly 50% faradic efficiency (FE) for BHMF, when compared to pure Cu and Ni electrodes (~ 10% BHMF FE). Our results suggest that the synergistic interaction between Cu and Ni creates an optimal catalytic environment for both HMF and adsorbed hydrogen (Hads) species, thereby enhancing BHMF formation through the ECH pathway.

生物质衍生的5-羟甲基糠醛(HMF)的电化学转化是一种有前途的、经济可行的、环境可持续的方法,可以利用可再生能源和通过水电解产生的原位氢来生产增值化学品。然而,HMF的电化学加氢(ECH)仍然具有挑战性,因为电极固有的低催化活性和选择性,再加上与水电解质中动力学上有利的析氢反应(HER)的竞争。在这项工作中,我们证明了通过直流(DC)磁控共溅射制备的CuxNi100-x杂原子薄膜,与纯Cu和Ni电极(~ 10% BHMF FE)相比,HMF到2,5-双羟基甲基呋喃(BHMF)的转化率提高了一个多数量级,BHMF的法拉进效率(FE)接近50%。我们的研究结果表明,Cu和Ni之间的协同作用为HMF和吸附氢(Hads)物种创造了最佳的催化环境,从而增强了通过ECH途径形成BHMF。
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引用次数: 0
Can natural capping provide long-term protection to earthen heritage in semi-arid regions? 自然封顶能否为半干旱地区的土质遗产提供长期保护?
IF 3.3 2区 综合性期刊 0 ARCHAEOLOGY Pub Date : 2025-12-13 DOI: 10.1016/j.culher.2025.11.015
Xinyu Jiang, Sok Yee Yeo
Under the impact of climate change, the Ming Great Wall of China is facing accelerated weathering on an unprecedented scale. Based on the principles of the soft capping approach, we propose to use the “natural capping” approach by applying native plants and soil medium that are adaptable to the in situ environments. Following field surveys of the Ming Great Wall in Shanxi Province, four scaled-down earthen walls were fabricated to support the growth of selected native plants on the top surfaces. Long-term monitoring revealed that the earthen walls covered by natural capping, especially native herbs with more biomass, could effectively influence thermal behaviour and moisture movement of the earthen walls, thus providing sustainable preservation effects in semi-arid regions. Compared with bare wall, natural capping reduced the number of freeze-thaw cycles at the top of the wall by 41.2 % in winter, decreased the average rate of temperature increase by 47.2 % in summer, and reduced the daily temperature difference and the temperature gradient between the range of 0 and 20 cm. Under the effects of rainfall, natural capping effectively stabilizes the moisture content in winter, decreases moisture fluctuation frequency by >61.9 % and delays the start time of moisture infiltration in the interior walls during summer. After one year of outdoor monitoring, the total loss of earth material was reduced significantly by 82.5 %. The findings of this work provide informed technical support for the long-term preservation of earthen heritage via the natural approach.
在气候变化的影响下,中国的明长城正面临着前所未有的加速风化。基于软封顶的原则,我们建议采用“自然封顶”的方法,即采用适应原位环境的本地植物和土壤介质。在对山西明长城进行实地调查后,我们制作了四堵按比例缩小的土墙,以支持选定的本地植物在顶部生长。长期监测结果表明,覆盖天然盖层的土墙,特别是生物量较高的天然草本植物,能够有效地影响土墙的热行为和水分运动,从而在半干旱地区提供可持续的保存效果。与裸墙相比,自然封顶使冬季墙顶冻融循环次数减少41.2%,夏季平均升温速率降低47.2%,并减小了0 ~ 20 cm范围内的日温差和温度梯度。在降雨的作用下,自然封顶有效地稳定了冬季的含水率,使湿度波动频率降低了61.9%,推迟了夏季内墙入渗的开始时间。经过1年的室外监测,土料总损失量显著减少82.5%。这项工作的发现为通过自然方法长期保存土质遗产提供了知情的技术支持。
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引用次数: 0
Phyllosphere microbiomes in grassland plants harbor a vast reservoir of novel antimicrobial peptides and biosynthetic diversity 草原植物的叶根圈微生物群蕴藏着大量的新型抗菌肽和生物合成多样性
IF 10.7 1区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES Pub Date : 2025-12-13 DOI: 10.1016/j.jare.2025.12.017
Hongzhang Zhou, , Baiyila Wu, Gang Xu, Limei Tian, Yunlei Sun, Fuyu Yang, Kuikui Ni

Introduction

The phyllosphere microorganisms colonizing plant surface harbor capacities to synthesize diverse specialized metabolites that mediate communication and interactions with environment and host. However, most known metabolites are derived from a few culturable microorganisms, and the genomic diversity and biosynthetic potential of the vast majority of bacteria associated with plants remain largely unexplored.

Objectives

Here, we aim to explore the genome architecture, biosynthetic ability, and host specific adaptability of grassland ecosystems, uncovering new perspectives on grassland phyllosphere microbial resources.

Methods

We employed ultra-deep metagenomic sequencing, functional analysis, host-associated characterization, and bioactivity assays to explore the phyllosphere microbiome across 221 grassland plant samples representing 45 families. This approach revealed host preference in biosynthetic gene clusters (BGCs) and validated the antimicrobial efficacy of phyllosphere-derived antimicrobial peptides (AMPs).

Results

Grassland plant phyllosphere microbiomes encode diverse BGCs. We identified 885,396 potential AMPs from over 68 million non-redundant gene sequences. Then, we reconstructed hundreds of near-complete genomes from phyllosphere metagenomes, and 32.61 % of reconstructed genomes were identified as unclassified genomes, primarily within Pseudomonadota, Actinomycetota, Bacillota and Bacteroidota phyla. Of the near-complete genomes, 91.97 % of the BGCs and 99.76 % of the identified AMPs were previously uncharacterized. Host phylogenetic analysis revealed functional divergence. Poaceae-associated Pseudomonas genomes contain an average of 28 BGCs, significantly higher than those in Asteraceae-associated genomes (mean = 14.76, P = 0.033). Similarly, Poaceae-associated Pantoea genomes carried an average of 9 BGCs, exhibiting significant enrichment compared to genomes from Asteraceae (mean = 7.13, P = 6.1e-05), Lamiaceae (mean = 7, P = 0.015), Ranunculaceae (mean = 8.22, P = 0.0053), and Rosaceae (mean = 7.75, P = 0.00069). ParaFit analyses further confirmed that host phylogeny significantly structures microbial functional repertoires, with intra–family hosts sharing more KEGG pathways than inter–family hosts. These results suggest that host evolutionary relationships are associated with metabolic specialization in phyllosphere microbiomes. All 13 AMPs synthesized via solid-phase peptide synthesis demonstrated antimicrobial activity, inhibiting the growth of at least one tested bacterial strain.

Conclusion

This study demonstrates the promise of grassland plant phyllosphere microbiome as a rich source for novel antimicrobial agents.
扎根于植物表面的层球微生物具有合成多种特殊代谢物的能力,这些代谢物介导了与环境和宿主的交流和相互作用。然而,大多数已知的代谢物来源于少数可培养的微生物,并且绝大多数与植物相关的细菌的基因组多样性和生物合成潜力在很大程度上仍未被探索。目的探讨草原生态系统的基因组结构、生物合成能力和宿主特异性适应性,为草原层际微生物资源研究提供新的视角。方法采用超深度宏基因组测序、功能分析、宿主相关表征和生物活性分析等方法,对45科221份草原植物样品的层际微生物组进行了研究。该方法揭示了生物合成基因簇(BGCs)的宿主偏好,验证了层球衍生抗菌肽(AMPs)的抗菌功效。结果草地植物层球微生物组编码多种bgc。我们从超过6800万个非冗余基因序列中鉴定出885396个潜在的amp。然后,我们从层球元基因组中重建了数百个接近完整的基因组,其中32.61 %的重建基因组被鉴定为未分类基因组,主要分布在假单胞菌门、放线菌门、芽孢杆菌门和拟杆菌门。在接近完整的基因组中,91.97 %的BGCs和99.76 %的鉴定AMPs以前未被表征。宿主系统发育分析显示功能分化。poaceae相关假单胞菌基因组平均含有28个bgc,显著高于asteraceae相关基因组(平均值 = 14.76,P = 0.033)。同样,Poaceae-associated Pantoea基因组进行平均9 bgc,表现出显著的富集比基因组从菊科(意味着 = 7.13,P = 6.1 e-05),唇形科(意味着 = 7 P = 0.015),毛茛科(意味着 = 8.22,P = 0.0053),和蔷薇科(意味着 = 7.75,P = 0.00069)。ParaFit分析进一步证实,宿主系统发育显著地构建了微生物功能库,家族内宿主比家族间宿主共享更多的KEGG途径。这些结果表明,宿主进化关系与层球微生物组的代谢专门化有关。所有通过固相肽合成的13种AMPs都显示出抗菌活性,至少抑制了一种被试菌株的生长。结论本研究表明,草地植物层际微生物群落是开发新型抗菌药物的丰富资源。
{"title":"Phyllosphere microbiomes in grassland plants harbor a vast reservoir of novel antimicrobial peptides and biosynthetic diversity","authors":"Hongzhang Zhou, , Baiyila Wu, Gang Xu, Limei Tian, Yunlei Sun, Fuyu Yang, Kuikui Ni","doi":"10.1016/j.jare.2025.12.017","DOIUrl":"https://doi.org/10.1016/j.jare.2025.12.017","url":null,"abstract":"<h3>Introduction</h3>The phyllosphere microorganisms colonizing plant surface harbor capacities to synthesize diverse specialized metabolites that mediate communication and interactions with environment and host. However, most known metabolites are derived from a few culturable microorganisms, and the genomic diversity and biosynthetic potential of the vast majority of bacteria associated with plants remain largely unexplored.<h3>Objectives</h3>Here, we aim to explore the genome architecture, biosynthetic ability, and host specific adaptability of grassland ecosystems, uncovering new perspectives on grassland phyllosphere microbial resources.<h3>Methods</h3>We employed ultra-deep metagenomic sequencing, functional analysis, host-associated characterization, and bioactivity assays to explore the phyllosphere microbiome across 221 grassland plant samples representing 45 families. This approach revealed host preference in biosynthetic gene clusters (BGCs) and validated the antimicrobial efficacy of phyllosphere-derived antimicrobial peptides (AMPs).<h3>Results</h3>Grassland plant phyllosphere microbiomes encode diverse BGCs. We identified 885,396 potential AMPs from over 68 million non-redundant gene sequences. Then, we reconstructed hundreds of near-complete genomes from phyllosphere metagenomes, and 32.61 % of reconstructed genomes were identified as unclassified genomes, primarily within Pseudomonadota, Actinomycetota, Bacillota and Bacteroidota phyla. Of the near-complete genomes, 91.97 % of the BGCs and 99.76 % of the identified AMPs were previously uncharacterized. Host phylogenetic analysis revealed functional divergence. Poaceae-associated <em>Pseudomonas</em> genomes contain an average of 28 BGCs, significantly higher than those in Asteraceae-associated genomes (mean = 14.76, <em>P</em> = 0.033). Similarly, Poaceae-associated <em>Pantoea</em> genomes carried an average of 9 BGCs, exhibiting significant enrichment compared to genomes from Asteraceae (mean = 7.13, <em>P</em> = 6.1e-05), Lamiaceae (mean = 7, <em>P</em> = 0.015), Ranunculaceae (mean = 8.22, <em>P</em> = 0.0053), and Rosaceae (mean = 7.75, <em>P</em> = 0.00069). ParaFit analyses further confirmed that host phylogeny significantly structures microbial functional repertoires, with intra–family hosts sharing more KEGG pathways than inter–family hosts. These results suggest that host evolutionary relationships are associated with metabolic specialization in phyllosphere microbiomes. All 13 AMPs synthesized via solid-phase peptide synthesis demonstrated antimicrobial activity, inhibiting the growth of at least one tested bacterial strain.<h3>Conclusion</h3>This study demonstrates the promise of grassland plant phyllosphere microbiome as a rich source for novel antimicrobial agents.","PeriodicalId":14952,"journal":{"name":"Journal of Advanced Research","volume":"111 1","pages":""},"PeriodicalIF":10.7,"publicationDate":"2025-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145732103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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