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A comparative analysis of bioactive phytochemicals in Cynanchum viminale (L.) L. and Pergularia daemia (Forssk.) Chiov. from Saudi Arabian folk medicine 金秋草(Cynanchum viminale)植物活性化学物质的比较分析L.和Pergularia daemia (Forssk.)Chiov。来自沙特阿拉伯民间医学。
IF 2.1 3区 生物学 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2025-12-11 DOI: 10.1007/s00114-025-02039-2
Nawaf I. Alsenani, Saif H. Althagafi, Abdelazim Ali Ahmed, Ahmed A. Elhenawy, Ohoud J. AAlotaibi, Fatemah M. Asiri, Nujud H. Alqahtani, Sameera N. Al-Ghamdi, Nada M. Ali, Amal A. Alageel, Antar A. Abdelhamid, Fawy M. Abd El Latif

The dual global health crises of antimicrobial resistance and cancer demand the urgent discovery of novel therapeutic leads. The medicinal plants Cynanchum viminale and Pergularia daemia (Apocynaceae) represent a rich reservoir of bioactive compounds used in traditional medicine, yet a comprehensive comparative analysis of their bioactivities and molecular mechanisms has remained elusive. This study provides an integrated in vitro and in silico analysis of the methanolic extracts of C. viminale and P. daemia. Phytochemical profiles were delineated by HPLC. Bioactivities were systematically evaluated via a battery of five antioxidant assays (DPPH, ABTS, FRAP, H₂O₂, NO), broad-spectrum antimicrobial screening against six pathogens, and cytotoxicity assays against a panel of six human cancer cell lines (HepG-2, MCF-7, HCT-116, A-549, PC-3, A-431). To deconstruct the molecular basis of these activities, in silico molecular docking was performed against two pivotal therapeutic targets: Epidermal Growth Factor Receptor (EGFR) and Dihydrofolate Reductase (DHFR). A striking functional divergence between the two plants was discovered. P. daemia exhibited superior antioxidant and broader-spectrum antibacterial activity, a finding strongly correlated with its unique phenolic profile, particularly the potent DHFR-binding Chlorogenic acid and the bioenhancing alkaloid Piperine. In stark contrast, C. viminale demonstrated dramatically superior cytotoxic potency across all tested cancer cell lines, with IC₅₀ values as low as 24.37 µg/mL against HepG-2 liver cancer. Molecular docking brilliantly illuminated the mechanism behind this divergence: the potent cytotoxicity of C. viminale is driven by its principal alkaloids, Protopine and Berberine, which showed high-affinity binding to the ATP-binding site of EGFR, a key driver of cancer proliferation. DHFR, conversely, was identified as a common molecular target for potent binders from both plants (Evodiamine, Piperine, Chlorogenic acid), providing a unifying mechanism for their shared antimicrobial properties.

抗菌素耐药性和癌症这两大全球健康危机迫切需要发现新的治疗线索。药用植物Cynanchum viminale和Pergularia daemia(夹竹桃科)是传统医学中使用的丰富的生物活性化合物,但对它们的生物活性和分子机制的全面比较分析仍然是一个难以实现的。本研究对C. viminale和P. daemia的甲醇提取物进行了体外和室内综合分析。用高效液相色谱法测定了植物化学谱。通过五种抗氧化试验(DPPH、ABTS、FRAP、H₂O₂、NO)、对六种病原体的广谱抗菌筛选和对六种人类癌细胞系(HepG-2、MCF-7、HCT-116、a -549、PC-3、a -431)的细胞毒性试验,系统地评估了生物活性。为了解构这些活性的分子基础,对两个关键的治疗靶点:表皮生长因子受体(EGFR)和二氢叶酸还原酶(DHFR)进行了硅分子对接。在这两种植物之间发现了显著的功能差异。血卟啉具有优异的抗氧化和广谱抗菌活性,这一发现与其独特的酚类成分密切相关,特别是有效的dhfr结合绿原酸和增强生物碱胡椒碱。与之形成鲜明对比的是,C. viminale在所有测试的癌细胞系中表现出显著优越的细胞毒性,IC₅₀值低至24.37 μ g/mL,可用于HepG-2肝癌。分子对接出色地阐明了这种差异背后的机制:C. viminale的强细胞毒性是由其主要生物碱Protopine和Berberine驱动的,它们与EGFR的atp结合位点具有高亲和力,而EGFR是癌症增殖的关键驱动因素。相反,DHFR被鉴定为来自两种植物(evolodiamine,胡椒碱,绿原酸)的有效结合物的共同分子靶点,为它们共同的抗菌特性提供了统一的机制。
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引用次数: 0
Microstructural adaptations of snow bush (Aerva javanica (Burm.f.) Juss. Ex Schult.) in desert ecosystems 雪灌木(Aerva javanica,缅甸)的微观结构适应性汁液。)在沙漠生态系统
IF 2.1 3区 生物学 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2025-12-02 DOI: 10.1007/s00114-025-02047-2
Sana Abid, Ummar Iqbal, Muhammad Sharif, Sadaf Rafiq, Aisha Sana, Abdul Wahab, Mehboob Ahmad, Muhammad Yousuf

Aerva javanica (Snowbush) is a perennial xerophytic shrub native to South Asian deserts, recognized for its pivotal role in soil stabilization, desert rehabilitation, and ecosystem resilience. However, the structural basis of its survival across contrasting edaphic and climatic regimes remains poorly understood. This study aimed to elucidate the adaptive modulation of growth and anatomical traits of A. javanica across three ecologically distinct regions: (i) the Saline Cholistan Desert, (ii) the Cholistan Desert Margins, and (iii) the Thal Desert Margins, representing a gradient of salinity and aridity stress. Morphological assessments demonstrated that plant vigor decreased with increasing salinity—shoot and root lengths, biomass, and leaf area were highest at Thal (MGR) and lowest at saline core sites (CHM, RYK). Conversely, high-salinity populations developed denser root systems and greater leaf succulence, reflecting adaptive strategies for osmotic regulation and water-use efficiency. Anatomical investigations using fluorescent stereo microscopy revealed profound structural differentiation across habitats. Populations from the Saline Cholistan Desert exhibited thickened epidermis, enlarged cortical parenchyma, and expanded vascular bundles with additional xylem formation—traits enhancing hydraulic conductivity and salt exclusion. The Cholistan Desert Margins displayed intermediate anatomy with balanced vascular and storage tissues, indicating transitional adaptation to fluctuating moisture and ion availability. In contrast, Thal Desert Margin plants showed thinner dermal tissues, reduced sclerenchyma, and well-developed chlorenchyma, emphasizing photosynthetic optimization and rapid biomass accumulation. Moreover, the species exhibited novel xylem vessel development within cortical and endodermal root regions and specialized glandular and non-glandular foliar trichomes. These coordinated structural adaptations enhanced hydraulic efficiency and water conservation, reinforcing its dominance and persistence in hyper-arid desert ecosystems. Collectively, these results demonstrate a hierarchical adaptive framework from hydraulic safety to growth efficiency, underscoring A. javanica exceptional structural plasticity. Future integrative studies employing transcriptomic and metabolomic approaches are recommended to elucidate the genetic and biochemical mechanisms governing this adaptive continuum and to inform climate-resilient restoration strategies for arid landscapes.

雪灌木(Aerva javanica)是南亚沙漠的一种多年生旱生灌木,在土壤稳定、沙漠恢复和生态系统恢复中具有关键作用。然而,其在不同的地理和气候条件下生存的结构基础仍然知之甚少。本研究旨在阐明爪哇草在三个不同生态区域的生长和解剖特征的适应性调节:(i)盐碱化的Cholistan沙漠,(ii) Cholistan沙漠边缘,和(iii) Thal沙漠边缘,代表盐度和干旱胁迫的梯度。形态学评价表明,植物活力随盐度的增加而降低,茎长、根长、生物量和叶面积在盐碱地(MGR)最高,在盐碱地(CHM, RYK)最低。相反,高盐度群体根系更密集,叶片多肉质更丰富,反映了渗透调节和水分利用效率的适应性策略。利用荧光立体显微镜的解剖研究揭示了不同栖息地之间深刻的结构分化。来自盐碱化的Cholistan沙漠的种群表现出表皮增厚、皮层薄壁组织增大、维管束扩张和木质部形成的增加,这些特征增强了水导性和盐分排斥。乔里斯坦沙漠边缘具有平衡的维管组织和储存组织,表明过渡性适应波动的湿度和离子有效性。相比之下,沙漠边缘植物真皮组织较薄,厚壁组织较少,绿壁组织发达,强调光合优化和快速生物量积累。此外,该物种在皮层和内胚层根区表现出新的木质部导管发育,并具有特化的腺状和非腺状叶毛状体。这些协调的结构适应提高了水力效率和水资源保护,加强了其在超干旱沙漠生态系统中的主导地位和持久性。总的来说,这些结果证明了从水力安全到生长效率的分层适应框架,强调了爪哇草特殊的结构可塑性。未来的综合研究建议采用转录组学和代谢组学方法来阐明控制这种适应性连续体的遗传和生化机制,并为干旱景观的气候适应性恢复策略提供信息。
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引用次数: 0
Interactions among vascular plants, bryophytes, and lichens in grassland communities along elevational gradients 沿海拔梯度的草地群落中维管植物、苔藓植物和地衣的相互作用
IF 2.1 3区 生物学 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2025-12-02 DOI: 10.1007/s00114-025-02049-0
Michele Mugnai, Luca Di Nuzzo, Andrea Beltramini, Paride Balzani, Clara Frasconi Wendt, Giulio Ferretti, Alice Misuri, Renato Benesperi, Daniele Viciani, Lorenzo Lazzaro

Grasslands in temperate Europe are key biodiversity hotspots, supporting not only a rich vascular flora but also diverse communities of bryophytes and lichens. However, the processes shaping lichens and bryophytes in these ecosystems, particularly along environmental gradients, remain understudied. We investigated the relative roles of abiotic factors (elevation and rock abundance) and biotic drivers (vascular plant cover and height) in determining both the taxonomic and functional diversity of bryophytes and lichens in two protected grassland sites in central Italy. Across 80 plots spanning wide elevational gradients, we measured species richness and functional diversity for both bryophytes and lichens, and applied piecewise structural equation modeling to test causal relationships. Our results revealed that vascular plant structure (particularly vegetation cover and height) was the main determinant of lichens and bryophytesdiversity. Both facets of diversity in bryophytes and lichens were negatively affected by dense and tall vascular vegetation, likely due to shading and competition for space. Abiotic factors, such as elevation and rock abundance, influenced lichens and bryophytesonly indirectly, by altering vascular plant structure. An exception was bryophyte species richness, which was directly promoted by rock abundance through increased habitat heterogeneity and reduced vascular plant competition. Site-specific effects, likely related to substrate type (calcareous vs. siliceous), also played a significant role, particularly in shaping bryophyte communities. These findings suggest that biotic interactions, especially competition with vascular plants, play a more central role than direct abiotic filtering in determining lichens and bryophytesdiversity in grassland ecosystems. Our study provides a functional, multi-taxa framework for understanding elevational patterns of lichens and bryophytesdiversity and highlights the importance of considering vegetation structure in grassland conservation and management strategies.

欧洲温带草原是重要的生物多样性热点地区,不仅拥有丰富的维管植物区系,还拥有多种苔藓植物和地衣群落。然而,这些生态系统中地衣和苔藓植物的形成过程,特别是沿着环境梯度的过程,仍然没有得到充分的研究。研究了非生物因子(海拔和岩石丰度)和生物驱动因子(维管植物覆盖和高度)在意大利中部两个受保护草原苔藓植物和地衣分类和功能多样性中的相对作用。在80个不同海拔梯度的样地上,我们测量了苔藓植物和地衣的物种丰富度和功能多样性,并应用分段结构方程模型来检验因果关系。结果表明,维管植物结构(尤其是植被覆盖度和高度)是地衣和苔藓植物多样性的主要决定因素。高密维管植被对苔藓植物和地衣的多样性都有负面影响,这可能是由于遮荫和空间竞争。非生物因素,如海拔和岩石丰度,仅通过改变维管植物结构间接影响地衣和苔藓植物。苔藓植物物种丰富度是一个例外,岩石丰度通过增加生境异质性和减少维管植物竞争直接促进了苔藓植物物种丰富度。地点特异性效应,可能与基质类型(钙质或硅质)有关,也发挥了重要作用,特别是在形成苔藓植物群落方面。这些发现表明,生物相互作用,特别是与维管植物的竞争,在决定草地生态系统地衣和苔藓植物多样性方面发挥着比直接非生物过滤更重要的作用。我们的研究为了解地衣和苔藓植物多样性的海拔格局提供了一个功能的、多类群的框架,并强调了在草地保护和管理策略中考虑植被结构的重要性。
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引用次数: 0
Molecular identification, chemical profiling, and bioactive potential of Eryngium thyrsoideum Boiss.: ethnopharmacological perspectives thyrsoideum Boiss的分子鉴定、化学分析和生物活性潜力。民族药理学观点。
IF 2.1 3区 生物学 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2025-12-01 DOI: 10.1007/s00114-025-02052-5
Hevi Rahim Karim, Kamaran Salh Rasul, Hawar Halshoy, Aram Akram Mohammed

Eryngium thyrsoideum is a regionally significant species known for its distinctive morphological traits and documented medicinal uses. The genus is primarily known for its antioxidant, cytotoxic, anti-inflammatory, and antibacterial properties. Despite its ethnobotanical relevance, comprehensive scientific studies exploring its molecular profile and pharmacological properties remain scarce. Therefore, in the present investigation, fresh leaves and stems of this species were collected from the wild populations at the pre-flowering stage in early June. The leaves were used for DNA extraction, while the stem samples were analyzed using a spectrophotometer to detect selected phytochemicals and GC-MS to determine the chemical profile. To the best of our knowledge, this study presents the first DNA sequencing of E. thyrsoideum using ITS markers, with the resulting sequence submitted to the NCBI database. Phylogenetic analysis indicates a close genetic relationship between this species and Eryngium kotschyi. The quantities of total phenols, total flavonoids, antioxidants, ascorbic acid, and soluble sugar were 257.14 ± 1.64 µg GAE/g FW, 94.39 ± 0.27 µg QE/g FW, 318.30 ± 4.09 µg Trolox/g FW, 191.68 ± 2.77 µg TE/g FW, and 44.50 ± 1.37 µg GE/g FW, respectively. The GC-MS analysis revealed 32 compounds, and the top compounds were Methyl-β-D-thiogalactoside (24.24%), 4 H-Pyran-4-one,2,3-dihydro-3,5-dihydroxy-6-methyl- (8.91%), and 5-Hydroxymethylfurfural (7.74%). Whereas cis-13-Octadecenoic acid, methyl ester, Petroselinic acid, TMS derivative, and Heptanoic acid, 1-methylethyl ester were the compounds with the lowest peak area values (0.27, 0.31, and 0.47%, respectively). Thus, the chemical diversity identified in this plant provides scientific support for its ethnobotanical importance and highlights its potential as a source of health-promoting compounds.

thyrsoideum是一种区域性重要物种,以其独特的形态特征和文献记载的药用用途而闻名。该属主要以其抗氧化,细胞毒性,抗炎和抗菌特性而闻名。尽管其与民族植物学相关,但探索其分子特征和药理特性的综合科学研究仍然很少。因此,在本次调查中,该物种在6月初花期前的野生种群中采集了新鲜的叶和茎。叶片用于DNA提取,茎部样品使用分光光度计检测选定的植物化学物质,GC-MS测定化学成分。据我们所知,本研究首次利用ITS标记对猪胸腺杆菌进行了DNA测序,并将测序结果提交给NCBI数据库。系统发育分析表明,该种与红喉红喉亲缘关系密切。总酚、总黄酮、抗氧化剂、抗坏血酸和可溶性糖的含量分别为257.14±1.64µg GAE/g FW、94.39±0.27µg QE/g FW、318.30±4.09µg Trolox/g FW、191.68±2.77µg TE/g FW和44.50±1.37µg GE/g FW。GC-MS共鉴定出32个化合物,分别为甲基-β- d -硫代半乳糖苷(24.24%)、4 h -吡喃-4- 1,2,3 -二氢-3,5-二羟基-6-甲基-(8.91%)和5-羟甲基糠醛(7.74%)。而顺式-13-十八烯酸、甲酯、石油亚麻酸、TMS衍生物和庚酸、1-甲基乙基酯的峰面积最小(分别为0.27、0.31和0.47%)。因此,在这种植物中发现的化学多样性为其民族植物学重要性提供了科学支持,并突出了其作为促进健康化合物来源的潜力。
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引用次数: 0
Connecting the dots: integrating citizen science, ecology, and habitat change for the conservation of three Leporidae species in the central mountains of Mexico 连接点:将公民科学、生态学和栖息地变化结合起来,保护墨西哥中部山区的三种狐猴科物种。
IF 2.1 3区 生物学 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2025-12-01 DOI: 10.1007/s00114-025-02048-1
Eric O Ramírez-Bravo, Evangelina E. Camargo-Rivera, C. Sánchez-Lewy Aldana, F. Amador-Cruz, M. A. Mora-Ramirez

Anthropogenic activities have a profound impact on ecosystems, threatening species and contributing to increased extinction rates. Among them are some Leporidae species, for which ecological data remains insufficient to support effective conservation. This study aimed to monitor the status of the volcano rabbit (Romerolagus diazi), eastern cottontail (Sylvilagus floridanus), and Mexican cottontail (Sylvilagus cunicularius) in 2018 in southern Mexico City, using citizen science tools. The field research involved recording fecal pellets and habitat characteristics along 1 km transects. Vegetation changes over the past 20 years were analyzed using the Standardized Precipitation Index (SPI), Enhanced Vegetation Index (EVI), and Standard Anomaly Index (SAI). Among 2,026 quadrants (~ 8,000 km²), the volcano rabbit, eastern cottontail, and Mexican cottontail were detected in 3.25%, 8.09%, and 12.37% of sampling points, respectively. Canonical correspondence analysis revealed that mature tree density harmed the presence of the volcano rabbit. At the same time, cottontails appeared to be more resilient to habitat changes. Despite reforestation efforts, SPI, EVI, and SAI data indicated an increase in dryness over time. Intensive planting has transformed alpine grasslands, a key habitat for the volcano rabbit, into densely forested areas. Citizen science is an effective tool for monitoring certain species of leporids, such as the volcano rabbit, and provides valuable insights for conservation strategies. Future interventions should prioritize the preservation of alpine grasslands to ensure their long-term survival.

人为活动对生态系统有着深远的影响,威胁着物种,并加速了物种灭绝的速度。其中有一些Leporidae物种,其生态资料尚不足以支持有效的保护。本研究旨在利用公民科学工具,监测2018年墨西哥城南部火山兔(Romerolagus diazi)、东部棉尾(Sylvilagus floridanus)和墨西哥棉尾(Sylvilagus cunicularius)的状况。实地研究包括沿着1公里的样带记录粪便颗粒和栖息地特征。利用标准化降水指数(SPI)、增强型植被指数(EVI)和标准异常指数(SAI)分析了近20年来的植被变化。在2026个象限(~ 8000 km²)中,火山兔、东部棉尾和墨西哥棉尾的检出率分别为3.25%、8.09%和12.37%。典型对应分析表明,成熟树木的密度对火山兔的存在有不利影响。与此同时,棉尾虫似乎更能适应栖息地的变化。尽管重新造林努力,SPI、EVI和SAI数据表明,随着时间的推移,干旱程度有所增加。密集种植已经把高山草原——火山兔的主要栖息地——变成了茂密的森林地区。公民科学是监测某些物种的有效工具,如火山兔,并为保护策略提供了有价值的见解。未来的干预措施应优先保护高山草原,以确保其长期生存。
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引用次数: 0
​​Forensic discrimination of sex from thermally treated human hair using ATR-FTIR spectroscopy and machine learning 利用ATR-FTIR光谱和机器学习从热处理的人类头发中进行性别鉴定。
IF 2.1 3区 生物学 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2025-12-01 DOI: 10.1007/s00114-025-02050-7
BS Gunashree, Mebin Wilson Thomas, Suchita Rawat, K Shrilakshmi, T Keerthana, Akhil Benny

Thermal degradation alters hair’s molecular structure, influencing its protein, lipid, and disulphide components, which serve as indicators for forensic analysis. The present study investigates the effect of thermal treatment on the chemical composition of human hair and explores the potential of ATR-FTIR spectroscopy combined with machine learning for forensic sex determination. ATR-FTIR spectroscopy was employed to analyze untreated and thermally treated hair strands collected from 50 male and 50 female participants aged 18–30 years. The resulting spectral data were subjected to multivariate analysis using PLS-DA, SVM, and KNN models to classify the samples based on sex and thermal treatment status. Thermal exposure caused distinct alterations in the key spectral bands, especially those associated with proteins (Amide I, II, III), lipids (C-H stretching), and disulfides (S-S stretching), indicating structural denaturation, bond cleavage, and oxidative modifications. Furthermore, the application of multivariate models PLS-DA, SVM, and KNN, on ATR-FTIR spectral data proved highly effective in classifying hair samples by sex and thermal treatment status. All three models achived 100% accuracy, precision, recall and F1-scores, effectively distinguishing between thermally treated and untreated samples by sex In conclusion, ATR-FTIR, coupled with advanced machine learning models, offers a powerful, non-destructive tool for assessing thermal damage, characterising hair composition determining sex, offering significant potential applications in forensic investigations involving burnt hair samples.

热降解会改变头发的分子结构,影响其蛋白质、脂质和二硫化物成分,这些成分可作为法医分析的指标。本研究调查了热处理对人类头发化学成分的影响,并探索了ATR-FTIR光谱结合机器学习在法医性别鉴定中的潜力。采用ATR-FTIR光谱分析了来自50名年龄在18-30岁的男性和50名女性的未经处理和热处理的头发。利用PLS-DA、SVM和KNN模型对所得光谱数据进行多变量分析,根据性别和热处理状态对样品进行分类。热暴露引起关键光谱带的明显变化,特别是与蛋白质(酰胺I, II, III),脂质(C-H拉伸)和二硫化物(S-S拉伸)相关的光谱带,表明结构变性,键断裂和氧化修饰。此外,将多变量模型PLS-DA、SVM和KNN应用于ATR-FTIR光谱数据,证明了根据性别和热处理状态对头发样本进行分类的有效性。总之,ATR-FTIR与先进的机器学习模型相结合,为评估热损伤、表征头发成分、确定性别提供了一种强大的、非破坏性的工具,在涉及烧伤头发样本的法医调查中提供了重要的潜在应用。
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引用次数: 0
Predicting the potential geographic distribution of Fagus orientalis Lipsky under climate change using an ensemble model approach in Türkiye 气候变化条件下东方Fagus orientalis Lipsky潜在地理分布的集合模型预测。
IF 2.1 3区 生物学 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2025-12-01 DOI: 10.1007/s00114-025-02051-6
İsmail Koç

Oriental beech (Fagus orientalis Lipsky) is an ecologically and economically significant species, covering 8.5% of Türkiye’s total forest area. However, climate change threatens its distribution due to increasing temperatures and decreasing precipitation. This study integrates geospatial informatics and ensemble modeling (EM) to predict the potential geographic distribution (PGD) of F. orientalis under future climate scenarios using Biomod2 within the ShinyBIOMOD framework. An EM model has been developed from six models [Generalized Boosting Model (GBM), Generalized Linear Model (GLM), Multivariate Adaptive Regression Splines (MARS), Generalized Additive Model (GAM), Artificial Neural Networks (ANN), and Maximum Entropy (MaxEnt)] using 76 validated occurrence records and 19 environmental predictors. Model validation achieved high predictive accuracy (AUC = 0.96, TSS = 0.85). Spatial projections for SSP2-45 and SSP5-85 scenarios indicate significant shifts in PGD. Notably, high-suitability habitats will decline under SSP2-45 but expand under SSP5-85. Bio2 [Mean Diurnal Range (mean of monthly (maximum temperature – minimum temperature))] and Bio4 [Seasonal temperature fluctuation (temperature seasonality (standard deviation x 100))] emerged as the dominant drivers of distribution changes. Based on geospatial analyses, F. orientalis is expected to migrate to higher altitudes in the Black Sea region and expand into southern and inner Türkiye. This shift reflects a broader trend of temperate forest adaptation to climate change. This study underscores the power of ensemble modeling for ecological forecasting and conservation planning, demonstrating the value of computational tools in assessing climate-driven species distribution changes. The findings contribute to predictive modeling for biodiversity conservation and ecosystem management.

东方山毛榉(Fagus orientalis Lipsky)是一种具有生态和经济意义的物种,占 rkiye森林总面积的8.5%。然而,由于气温升高和降水减少,气候变化威胁着其分布。本研究将地理空间信息学和集成模型(EM)相结合,在ShinyBIOMOD框架下,利用Biomod2预测未来气候情景下东方蒿的潜在地理分布(PGD)。EM模型由六个模型[广义增强模型(GBM)、广义线性模型(GLM)、多元自适应回归样条(MARS)、广义可加模型(GAM)、人工神经网络(ANN)和最大熵(MaxEnt)]开发而成,使用76个经过验证的事件记录和19个环境预测因子。模型验证具有较高的预测准确率(AUC = 0.96, TSS = 0.85)。SSP2-45和SSP5-85情景的空间预测表明PGD发生了显著变化。值得注意的是,高适宜性生境在SSP2-45下呈下降趋势,而在SSP5-85下呈扩张趋势。Bio2[平均日差(月平均(最高温度-最低温度))]和Bio4[季节温度波动(温度季节性(标准差× 100))]成为分布变化的主要驱动因素。根据地理空间分析,东方蓟预计将向黑海地区的高海拔地区迁移,并向南部和内陆地区扩张。这一转变反映了温带森林适应气候变化的更广泛趋势。这项研究强调了集合模型在生态预测和保护规划中的作用,展示了计算工具在评估气候驱动的物种分布变化方面的价值。研究结果有助于建立生物多样性保护和生态系统管理的预测模型。
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引用次数: 0
The oncogenic role of BCL2L12 associated with immune status in the prognosis of human hepatocellular carcinoma BCL2L12与免疫状态在人肝细胞癌预后中的致瘤作用
IF 2.1 3区 生物学 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2025-11-26 DOI: 10.1007/s00114-025-02040-9
Kun Niu, Shuangjiao Cao, Nan Lian, Rui Du, Guofang Lu

Hepatocellular carcinoma (HCC) is a global challenge with a high cancer-related death rate. Although BCL2L12 has been reported to be upregulated in mice with HCC, and its deletion markedly inhibits HCC progression, its specific role and associated tumorigenesis mechanisms in human HCC remain elusive. Differential gene expression analysis was performed using TCGA and GEPIA databases. Survival probability analysis was conducted using the Kaplan–Meier method. Immune checkpoint-related prognosis in HCC and their correlation with BCL2L12 were analyzed. The correlation between BCL2L12 and immune infiltration was investigated using the TIMER database. MEXPRESS and MethSurv were employed to display methylation of BCL2L12 and prognostic value. Upstream ncRNAs of BCL2L12 were predicted using starBase, String and TargetScan. Protein–protein interaction network involving BCL2L12 was constructed via String. Genes related to BCL2L12 in HCC were obtained from the LinkedOmics database. BCL2L12-targeted drugs for HCC were predicted via RNAactDrug, Enrichr, CTD, and NetworkAnalyst. BCL2L12 expression was upregulated and associated with poor prognosis in HCC. BCL2L12 showed significant co-occurrence with an immune checkpoint, namely TNFRSF4. BCL2L12 was significantly associated with immune infiltration in HCC. Cg03848533 methylation and CYTOR/MIR4435-2HG-has-miR-125b-5p axis regulated BCL2L12 expression and prognosis of HCC. BCL2L12 interacted with ZNF215 and PUSL1, all of which were independent risk factors for overall survival in patients with HCC. Panobinostat, Pirinixic acid, and Fluorouracil were predicted to be the potential BCL2L12-targeted drug for HCC. Our findings offer an understanding of the Oncogenic Role of BCL2L12 associated with immune status in the prognosis of HCC and provide potential strategies for currently limited treatment.

肝细胞癌(HCC)是一个具有高癌症相关死亡率的全球性挑战。尽管有报道称BCL2L12在肝癌小鼠中表达上调,其缺失可显著抑制肝癌进展,但其在人类肝癌中的具体作用和相关的肿瘤发生机制仍不清楚。采用TCGA和GEPIA数据库进行差异基因表达分析。采用Kaplan-Meier法进行生存概率分析。分析肝癌免疫检查点相关预后及其与BCL2L12的相关性。利用TIMER数据库研究BCL2L12与免疫浸润的相关性。采用MEXPRESS和MethSurv检测BCL2L12的甲基化及其预后价值。利用starBase、String和TargetScan对BCL2L12上游ncrna进行预测。通过String构建了BCL2L12蛋白-蛋白相互作用网络。从LinkedOmics数据库中获得HCC中与BCL2L12相关的基因。通过RNAactDrug、enrichment、CTD和NetworkAnalyst预测治疗HCC的bcl2l12靶向药物。BCL2L12在HCC中表达上调并与预后不良相关。BCL2L12与免疫检查点TNFRSF4显著共存。BCL2L12在HCC中与免疫浸润显著相关。Cg03848533甲基化和CYTOR/MIR4435-2HG-has-miR-125b-5p轴调节BCL2L12的表达和HCC的预后。BCL2L12与ZNF215和PUSL1相互作用,它们都是HCC患者总生存的独立危险因素。Panobinostat、匹立尼克酸和氟尿嘧啶被预测为潜在的肝癌bcl2l12靶向药物。我们的研究结果提供了对BCL2L12在HCC预后中与免疫状态相关的致瘤作用的理解,并为目前有限的治疗提供了潜在的策略。
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引用次数: 0
Habitat degradation relates to reduced immune function in nestlings, but not adults, of a tropical forest bird 栖息地退化与热带森林鸟类的雏鸟免疫功能下降有关,但与成年鸟无关。
IF 2.1 3区 生物学 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2025-11-26 DOI: 10.1007/s00114-025-02046-3
Tamara Isabelle Sorg, Arne Hegemann, Laurence Cousseau, Gladys Nyakeru Kung’u, Janne Heiskanen, Petri Pellikka, Mwangi Githiru, Luc Lens, Beate Apfelbeck

Human-induced habitat loss, fragmentation and degradation are among the leading causes of species decline worldwide. This is particularly true in tropical forests, where unique, often highly specialized fauna is under threat. By altering resource availability, anthropogenic habitat change can impose resource constraints on animals and may influence their allocation of resources to competing life history traits. In this study, we investigated whether nestlings and adults differently invest in self-maintenance depending on habitat degradation in the placid greenbul (Phyllastrephus cabanisi placidus), a cooperative breeder native to the cloud forests of Eastern Africa. We quantified investment in self-maintenance by measuring innate immune function using bacteria killing assays (BKAs) in adult breeders and their nestlings along a gradient of fragmented and degraded forests of the Kenyan Taita Hills. While innate immune function is an important defence against pathogens, resources needed to maintain it may come at a cost to other processes such as nestling development. We show that while forest degradation did not affect adult innate immune function, nestlings bear the cost of growing up in degraded habitats, as their ability to clear bacteria from blood plasma was lower in areas with degraded vegetation. These findings highlight the importance of studying the effects of habitat fragmentation and degradation in the tropics, where most of the global biodiversity occurs, and where long-lived species may respond differently from short-lived temperate ones, for example by prioritising self-preservation over reproduction.

人类活动导致的栖息地丧失、破碎化和退化是全球物种减少的主要原因。在热带森林尤其如此,那里独特的、往往高度特化的动物群正受到威胁。通过改变资源的可用性,人为的栖息地变化可以对动物施加资源限制,并可能影响它们将资源分配给竞争的生活史特征。在这项研究中,我们调查了幼鸟和成鸟在自我维持方面的投资是否取决于栖息地的退化,这取决于原产于东非云雾森林的一种合作繁殖动物。我们在肯尼亚泰塔山的破碎和退化的森林梯度上,通过使用细菌杀死试验(bka)测量成年繁殖者及其雏鸟的先天免疫功能,量化了自我维持的投资。虽然先天免疫功能是对抗病原体的重要防御,但维持它所需的资源可能会以牺牲雏鸟发育等其他过程为代价。我们的研究表明,虽然森林退化不影响成虫的先天免疫功能,但在退化的栖息地中,雏鸟承担了成长的成本,因为在植被退化的地区,雏鸟清除血浆细菌的能力较低。这些发现强调了研究热带地区栖息地破碎化和退化的影响的重要性。全球生物多样性主要发生在热带地区,在热带地区,长寿物种的反应可能与寿命短的温带物种不同,例如,它们优先考虑自我保护而不是繁殖。
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引用次数: 0
GC/MS analysis and insecticidal activity of Pelargonium graveolens essential oil from Algeria against Culex pipiens and Culiseta longiareolata mosquito larvae 阿尔及利亚天竺葵精油对淡库蚊和长乳库蚊幼虫的气相色谱/质谱分析及杀虫活性研究。
IF 2.1 3区 生物学 Q2 MULTIDISCIPLINARY SCIENCES Pub Date : 2025-11-26 DOI: 10.1007/s00114-025-02044-5
Rayene Mokhati, Hayette Bouabida, Djemaa Dris

The aim of our study on the essential oil of the local plant Pelargonium graveolens, collected from Tebessa, Northeast Algeria, is to determine its chemical composition and its toxicity as well as effects on biochemical and enzymatic parameters of Culex pipiens as well as Culiseta longiareolata mosquito at the fourth larval stage. The P. graveolens essential oil was obtained by hydrodistillationthen analyzed using gas chromatography-mass spectrometry (GC/MS). The analysis revealed that the major constituents of this oil were Citronellol (24.86%), followed by Geraniol (20.50%), Citronellylformate (8.30%), Geranyl isovalerate (8.12%), Lavandulyl acetate (5.51%), Menthone (5.26%), and Linalool (2.91%). This essential oil’s toxicity was tested on larvae (stage four) of Cx. pipiens and Cs.longiareolata mosquitoes. Our study has shown that P. graveolens EO has great larvicidal efficiency against L4 larvae of Cx.pipiens and Cs.longiareolata. For both species, our LC25 values were 27.32 and 39.56ppm whileour LC50valueswere 34.39 and 44.95ppm respectively. The results indicate that the essential oil of P. graveolens, applied at the LC25 and LC50concentrations, caused a significant decrease (assessed via Student’s t-test, p < 0.05) in protein, lipid, and carbohydrate levels as well as activation of detoxification enzymes, glutathione S-transferase (GST) and catalase (CAT).In conclusion, essential oil of P. graveolens can be used as a natural alternative to insecticides against insects such as Cx pipiens and Cs.longiareolata mosquitoes.

Graphical Abstract

本研究对阿尔及利亚东北部Tebessa地区当地植物Pelargonium graveolens挥发油的化学成分、毒性及对四龄库蚊和长乳库蚊生化酶指标的影响进行了研究。采用气相色谱-质谱联用技术(GC/MS)对石竹挥发油进行分析。结果表明,香茅精油的主要成分为香茅醇(24.86%),其次为香叶醇(20.50%)、香茅烯甲酸酯(8.30%)、异戊酸香茅酯(8.12%)、乙酸薰衣草酚(5.51%)、薄荷酮(5.26%)和芳樟醇(2.91%)。用该精油对四期幼虫进行了毒性试验。和c。longiareolata蚊子。本研究表明,该菌对Cx的L4幼虫有较好的杀虫效果。库蚊和长角库蚊。LC25分别为27.32和39.56ppm, lc50分别为34.39和44.95ppm。结果表明,在LC25和lc50浓度下,石蜡挥发油引起了显著的降低(通过学生t检验,p
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