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The application of ROBINS-I guidance in systematic reviews of non-randomised studies: A descriptive study. ROBINS-I指南在非随机研究系统评价中的应用:一项描述性研究。
IF 6.1 2区 生物学 Q1 MATHEMATICAL & COMPUTATIONAL BIOLOGY Pub Date : 2026-03-01 Epub Date: 2025-10-22 DOI: 10.1017/rsm.2025.10048
Zipporah Iheozor-Ejiofor, Jelena Savović, Russell J Bowater, Julian P T Higgins

The ROBINS-I tool is a commonly used tool to assess risk of bias in non-randomised studies of interventions (NRSI) included in systematic reviews. The reporting of ROBINS-I results is important for decision-makers using systematic reviews to understand the weaknesses of the evidence. In particular, systematic review authors should apply the tool according to the guidance provided. This study aims to describe how ROBINS-I guidance is currently applied by review authors. In January 2023, we undertook a citation search and screened titles and abstracts of records published in the previous 6 months. We included systematic reviews of non-randomised studies of intervention where ROBINS-I had been used for risk-of-bias assessment. Based on 10 criteria, we summarised the diverse ways in which reviews deviated from or reported the use of ROBINS-I. In total, 492 reviews met our inclusion criteria. Only one review met all the expectations of the ROBINS-I guidance. A small proportion of reviews deviated from the seven standard domains (3%), judgements (13%), or in other ways (1%). Of the 476 (97%) reviews that reported some ROBINS-I results, only 57 (12%) reviews reported ROBINS-I results at the outcome level compared with 203 reviews that reported ROBINS-I results at the study level alone. Most systematic reviews of NRSIs do not fully apply the ROBINS-I guidance. This raises concerns around the validity of the ROBINS-I results reported and the use of the evidence from these reviews in decision-making.

ROBINS-I工具是一种常用的工具,用于评估纳入系统评价的非随机干预研究(NRSI)的偏倚风险。ROBINS-I结果的报告对于决策者使用系统评价来了解证据的弱点非常重要。特别是,系统评价作者应根据所提供的指导来应用该工具。本研究旨在描述综述作者目前如何应用ROBINS-I指南。2023年1月,我们进行了引文检索,筛选了近6个月发表的记录的标题和摘要。我们纳入了使用ROBINS-I进行偏倚风险评估的非随机干预研究的系统综述。基于10个标准,我们总结了评论偏离或报告ROBINS-I使用的不同方式。总共有492篇综述符合我们的纳入标准。只有一次审查符合罗宾斯- 1指南的所有期望。一小部分评论偏离了七个标准领域(3%),判断(13%),或者以其他方式(1%)。在476篇(97%)报告了一些ROBINS-I结果的综述中,只有57篇(12%)的综述在结局水平报告了ROBINS-I结果,而203篇综述仅在研究水平报告了ROBINS-I结果。大多数nrsi的系统评价没有完全应用ROBINS-I指南。这引起了对报告的ROBINS-I结果的有效性以及在决策中使用这些审查的证据的关注。
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引用次数: 0
Mass Spectrometry-Based Proteomics for Next-Generation Precision Oncology. 基于质谱的蛋白质组学用于下一代精确肿瘤学。
IF 6.6 2区 化学 Q1 SPECTROSCOPY Pub Date : 2026-03-01 Epub Date: 2025-04-23 DOI: 10.1002/mas.21932
Kuen-Tyng Lin, Gul Muneer, Pei-Rong Huang, Ciao-Syuan Chen, Yu-Ju Chen

Cancer is the leading cause of death worldwide characterized by patient heterogeneity and complex tumor microenvironment. While the genomics-based testing has transformed modern medicine, the challenge of diverse clinical outcomes highlights unmet needs for precision oncology. As functional molecules regulating cellular processes, proteins hold great promise as biomarkers and drug targets. Mass spectrometry (MS)-based clinical proteomics has illuminated the molecular features of cancers and facilitated discovery of biomarkers or therapeutic targets, paving the way for innovative strategies that enhance the precision of personalized treatment. In this article, we introduced the tools and current achievements of MS-based proteomics, choice of discovery and targeted MS from discovery to validation phases, profiling sensitivity from bulk samples to single-cell level and tissue to liquid biopsy specimens, current regulatory landscape of MS-based protein laboratory-developed tests (LDTs). The challenges, success and future perspectives in translating research MS assay into clinical applications are also discussed. With well-designed validation studies to demonstrate clinical benefits and meet the regulatory requirements for both analytical and clinical performance, the future of MS-based assays is promising with numerous opportunities to improve cancer diagnosis, treatment, and monitoring.

癌症是世界范围内死亡的主要原因,其特点是患者异质性和复杂的肿瘤微环境。虽然基于基因组学的检测已经改变了现代医学,但不同临床结果的挑战突出了对精确肿瘤学的需求未得到满足。作为调节细胞过程的功能分子,蛋白质作为生物标志物和药物靶点具有很大的前景。基于质谱(MS)的临床蛋白质组学揭示了癌症的分子特征,促进了生物标志物或治疗靶点的发现,为提高个性化治疗精度的创新策略铺平了道路。在本文中,我们介绍了基于质谱的蛋白质组学的工具和目前的成就,从发现到验证阶段的发现和靶向质谱的选择,从散装样品到单细胞水平和组织到液体活检标本的灵敏度分析,基于质谱的蛋白质实验室开发测试(LDTs)的当前监管前景。本文还讨论了将研究成果转化为临床应用的挑战、成功和未来前景。通过精心设计的验证研究来证明临床益处,并满足分析和临床性能的监管要求,MS-based分析的未来充满希望,有许多机会改善癌症的诊断、治疗和监测。
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引用次数: 0
Conducting evidence synthesis and developing evidence-based advice in public health and beyond: A scoping review and map of methods guidance. 在公共卫生及其他领域进行证据综合并制定循证咨询意见:范围审查和方法指南地图。
IF 6.1 2区 生物学 Q1 MATHEMATICAL & COMPUTATIONAL BIOLOGY Pub Date : 2026-03-01 Epub Date: 2025-11-18 DOI: 10.1017/rsm.2025.10051
Ani Movsisyan, Kolahta Asres Ioab, Jan William Himmels, Gina Loretta Bantle, Andreea Dobrescu, Signe Flottorp, Frode Forland, Arianna Gadinger, Christina Koscher-Kien, Irma Klerings, Joerg J Meerpohl, Barbara Nussbaumer-Streit, Brigitte Strahwald, Eva A Rehfuess

Effective public health decision-making relies on rigorous evidence synthesis and transparent processes to facilitate its use. However, existing methods guidance has primarily been developed within clinical medicine and may not sufficiently address the complexities of public health, such as population-level considerations, multiple evidence streams, and time-sensitive decision-making. This work contributes to the European Centre for Disease Prevention and Control initiative on methods guidance development for evidence synthesis and evidence-based public health advice by systematically identifying and mapping guidance from health and health-related disciplines.Structured searches were conducted across multiple scientific databases and websites of key institutions, followed by screening and data coding. Of the 17,386 records identified, 247 documents were classified as 'guidance products' providing a set of principles or recommendations on the overall process of developing evidence synthesis and evidence-based advice. While many were classified as 'generic' in scope, a majority originated from clinical medicine and focused on systematic reviews of intervention effects. Only 41 documents explicitly addressed public health. Key gaps included approaches for rapid evidence synthesis and decision-making and methods for synthesising evidence from laboratory research, disease burden, and prevalence studies.The findings highlight a need for methodological development that aligns with the realities of public health practice, particularly in emergency contexts. This review provides a key repository for methodologists, researchers, and decision-makers in public health, as well as clinical medicine and health care in Europe and worldwide, supporting the evolution of more inclusive and adaptable approaches to public health evidence synthesis and decision-making.

有效的公共卫生决策依赖于严格的证据综合和透明的过程,以促进其使用。然而,现有的方法指南主要是在临床医学范围内制定的,可能无法充分解决公共卫生的复杂性,例如人口水平的考虑、多种证据流和时间敏感的决策。这项工作有助于欧洲疾病预防和控制中心关于证据综合和循证公共卫生咨询方法指导发展的倡议,方法是系统地确定和绘制卫生和卫生相关学科的指导。在多个重要机构的科学数据库和网站上进行结构化搜索,然后进行筛选和数据编码。在确定的17386份记录中,247份文件被归类为“指导产品”,提供了一套关于发展证据综合和循证咨询的总体过程的原则或建议。虽然其中许多在范围上被归类为“仿制药”,但大多数源于临床医学,并侧重于对干预效果的系统评价。只有41份文件明确涉及公共卫生问题。主要差距包括快速证据合成和决策的方法,以及从实验室研究、疾病负担和流行病学研究中合成证据的方法。调查结果强调,需要制定符合公共卫生实践现实的方法,特别是在紧急情况下。本综述为欧洲和全世界公共卫生以及临床医学和卫生保健领域的方法学家、研究人员和决策者提供了一个关键知识库,支持发展更具包容性和适应性的公共卫生证据综合和决策方法。
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引用次数: 0
Exploring the genetic diversity of the IPK Medicago germplasm collection using GBS. 利用GBS技术研究紫花苜蓿种质资源的遗传多样性。
IF 3.6 3区 生物学 Q1 PLANT SCIENCES Pub Date : 2026-03-01 Epub Date: 2025-12-29 DOI: 10.1111/plb.70170
N Devabhakthini, M Kavka, D Harpke, A Himmelbach, U Lohwasser, E Willner, K J Dehmer

The genus Medicago, which includes the widely cultivated forage crop alfalfa, is of significant agricultural and ecological importance. Understanding genetic diversity in Medicago is essential for the conservation of its germplasm and its utilisation in plant breeding. This study aimed to assess the genetic diversity and population structure of the Medicago germplasm collection at the German Federal Ex situ Gene Bank. Genotyping-by-sequencing was used to analyse 1234 accessions of the Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), representing 40 Medicago species. After filtering, a high-quality dataset of 23,315 single nucleotide polymorphisms (SNPs) was generated. Our analyses revealed distinct genetic clusters corresponding to Medicago species and sections, with cultivated M. sativa L. and M. × varia Martyn clustering together with less genetic diversity compared to their wild counterparts. This reflects the shared genetic composition and extensive gene flow between M. sativa and M. × varia, commonly considered a hybrid between M. sativa and M. falcata L. Wild species displayed a more complex genetic structure, with polyphyletic patterns indicating higher genetic differentiation that reflects their diverse evolutionary histories and ecological adaptations. In conclusion, the comprehensive diversity analysis of the IPK Medicago collection provides valuable insights for gene bank management, targeted conservation efforts and strategic breeding initiatives.

苜蓿属包括广泛种植的饲料作物苜蓿,具有重要的农业和生态意义。了解紫花苜蓿的遗传多样性对其种质资源的保护和育种利用具有重要意义。本研究旨在评估德国联邦迁地基因库中紫花苜蓿种质资源的遗传多样性和群体结构。对莱布尼茨植物遗传和作物植物研究所(IPK)的1234份材料进行了基因分型测序分析,其中包括40种紫花苜蓿。筛选后,生成了23,315个单核苷酸多态性(snp)的高质量数据集。我们的分析显示不同的苜蓿品种和区段对应着不同的遗传集群,其中栽培的苜蓿和苜蓿的遗传多样性低于野生苜蓿。这反映了sativa和m.x varia之间具有共同的遗传组成和广泛的基因流,通常被认为是sativa和m.x varia的杂交品种。野生物种表现出更复杂的遗传结构,多种模式表明更高的遗传分化,反映了它们不同的进化历史和生态适应。综上所述,对IPK紫花苜蓿品种的综合多样性分析为基因库管理、有针对性的保护工作和育种战略提供了有价值的见解。
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引用次数: 0
Genome-wide analysis, expression profiling and molecular docking of tomato (Solanum lycopersicum) calmodulin (SlCaM) proteins in cadmium stress adaptation. 番茄钙调蛋白(SlCaM)在镉胁迫适应中的全基因组分析、表达谱及分子对接
IF 3.6 3区 生物学 Q1 PLANT SCIENCES Pub Date : 2026-03-01 Epub Date: 2025-12-25 DOI: 10.1111/plb.70162
I Khan, I-J Lee, S Asaf

Calcium ions (Ca2+) are essential for plant development and stress responses, including heavy metal (HM) stress. However, the roles and mechanisms of calmodulin proteins (SlCalMs) in mediating cadmium (Cd) stress in Solanum lycopersicum, a model crop, remain poorly understood. This study aimed to investigate the calcium-mediated stress response in S. lycopersicum by identifying and characterizing the SlCalMs gene family, a key subfamily of calcium-binding proteins (CBPs), to elucidate their potential roles in stress tolerance. A genome-wide identification of SlCalMs was conducted using Oryza sativa sequences as a reference. Bioinformatics analyses included BLASTP searches, sequence alignment, phylogenetics, assessment of physicochemical properties, gene structure and motif analysis, chromosomal mapping and duplication events. Gene expression was assessed under Cd stress using RNA-seq and validated by quantitative real-time polymerase chain reaction (qRT-PCR). Molecular docking simulations evaluated Cd-binding affinities, and protein-protein interaction networks, and Gene Ontology (GO) enrichment were used to explore biological functions. Eight distinct SlCalM groups were identified, varying in gene size, exon number and isoelectric point. Conserved motifs, exon-intron patterns and stress-responsive cis-elements were identified. Chromosomal analysis revealed segmental duplications. Under Cd stress, several SlCalMs showed differential expression; notably, Solyc04g077830 was significantly downregulated and showed strong Cd-binding affinity in silico, suggesting a role in Cd sequestration. GO and interaction network analyses confirmed their involvement in Ca2+ signalling, metal ion binding and stress-related pathways. This study provides comprehensive insight into the structure, evolution and functional roles of SlCalMs in tomato. Their involvement in Ca2+ signalling and Cd stress response highlights their potential for improving HM tolerance, offering valuable targets for future genetic or biotechnological interventions in crop improvement.

钙离子(Ca2+)是植物发育和逆境反应(包括重金属胁迫)所必需的。然而,钙调蛋白(calmodulin protein, SlCalMs)在模式作物茄(Solanum lycopersicum)中介导镉(Cd)胁迫的作用和机制尚不清楚。本研究旨在通过对钙结合蛋白(CBPs)关键亚家族SlCalMs基因家族的鉴定和表征,探讨番茄葡萄球菌(S. lycopersicum)钙介导的应激反应,阐明其在胁迫耐受中的潜在作用。以水稻(Oryza sativa)序列为参考,对SlCalMs进行了全基因组鉴定。生物信息学分析包括BLASTP搜索、序列比对、系统发育、理化性质评估、基因结构和基序分析、染色体作图和重复事件。采用RNA-seq技术评估Cd胁迫下基因表达,并采用实时定量聚合酶链反应(qRT-PCR)进行验证。分子对接模拟评估了cd结合亲和力,蛋白质-蛋白质相互作用网络,基因本体(GO)富集用于探索生物功能。鉴定出8个不同的SlCalM组,其基因大小、外显子数目和等电点不同。保守基序,外显子-内含子模式和应力响应顺式元件被确定。染色体分析显示片段重复。Cd胁迫下,几种SlCalMs出现差异表达;值得注意的是,Solyc04g077830在硅中表现出较强的Cd结合亲和力,表明其在Cd固存中起作用。氧化石墨烯和相互作用网络分析证实了它们参与Ca2+信号传导、金属离子结合和应激相关途径。本研究对SlCalMs在番茄中的结构、进化和功能作用有了全面的了解。它们参与Ca2+信号和Cd胁迫反应,突出了它们提高HM耐受性的潜力,为未来作物改良中的遗传或生物技术干预提供了有价值的目标。
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引用次数: 0
Postionization Mass Spectrometry Imaging: Past, Present, and Future. 电离质谱成像:过去、现在和未来。
IF 6.6 2区 化学 Q1 SPECTROSCOPY Pub Date : 2026-03-01 Epub Date: 2024-11-18 DOI: 10.1002/mas.21918
Xiaokang Guan, Qiao Lu, Shuxian Liu, Xiaowen Yan

Mass spectrometry imaging (MSI) technologies are widely used today to study the in situ spatial distributions for a variety of analytes. As these technologies advance, the pursuit of higher resolution in MSI has intensified. The limitation of direct desorption/ionization is its insufficient ionization, posing a constraint on the advancement of high-resolution MSI technologies. The introduction of postionization process compensates the low ionization efficiency caused by sacrificing the desorption area while pursuing high spatial resolution, resolving the conflict between high spatial resolution and high sensitivity in direct desorption/ionization method. Here, we discuss the sampling and ionization steps of MSI separately, and review the postionization methods in MSI according to three different sampling modes: laser sampling, probe sampling, and ion beam sampling. Postionization technology excels in enhancing ionization efficiency, boosting sensitivity, mitigating discrimination effect, simplifying sample preparation, and expanding the scope of applicability. These advantages position postionization technology as a promising tool for biomedical sciences, materials sciences, forensic analysis and other fields.

如今,质谱成像(MSI)技术被广泛用于研究各种分析物的原位空间分布。随着这些技术的发展,人们更加追求 MSI 的高分辨率。直接解吸/电离技术的局限性在于电离不充分,制约了高分辨率 MSI 技术的发展。后电离过程的引入弥补了在追求高空间分辨率的同时牺牲解吸面积而导致的低电离效率,解决了直接解吸/电离法的高空间分辨率和高灵敏度之间的矛盾。在此,我们分别讨论了 MSI 的取样和电离步骤,并根据激光取样、探针取样和离子束取样三种不同的取样模式,综述了 MSI 中的电离方法。后电离技术在提高电离效率、提高灵敏度、减轻辨别效应、简化样品制备和扩大适用范围等方面具有突出优势。这些优势使后置电离技术成为生物医学、材料科学、法医分析和其他领域一种前景广阔的工具。
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引用次数: 0
Starving for oxygen: the effect of hypoxia on seed germination and secondary dormancy induction in Mediterranean temporary ponds plant species. 缺氧:缺氧对地中海临时池塘植物种子萌发和二次休眠诱导的影响。
IF 3.6 3区 生物学 Q1 PLANT SCIENCES Pub Date : 2026-03-01 Epub Date: 2025-12-01 DOI: 10.1111/plb.70148
M Di Stefano, C P Dominguez, D Batlla, G D Puglia, A Cristaudo

Mediterranean temporary ponds (MTPs) are dynamic habitats where low levels of dissolved oxygen can significantly impact plant life. This study investigated the effect of hypoxia and near-anoxia on seed germination and the induction of secondary dormancy in 14 plant species, characteristic of this habitat. Imbibed seeds were subjected to various oxygen concentrations (0.1, 5, 10, or 21% O2), in both light and darkness. We also tested seed ability to recover germination by moving them to aerobic conditions. We measured embryo growth after hypoxic treatments and during recovery in three species with morpho-physiological dormancy, a rarely investigated response in this dormancy class. Our findings revealed a wide range of species-specific responses. Hypoxia did not inhibit germination in half of the tested species in the light, while near-anoxia completely inhibited germination in all species. However, most seeds fully recovered germination ability once aerobic conditions were restored. Interestingly, hypoxia in darkness reduced or prevented germination in some species and specifically induced secondary dormancy in Juncus bufonius. Surprisingly, seeds of Bulliarda vaillantii lost their light requirement for germination under hypoxia. In three Ranunculus species with morpho-physiological dormancy, hypoxia slowed embryo growth, which delayed germination recovery. This study reveals that MTPs species have evolved adaptations, ranging from tolerance to hypoxic conditions, to the ability to trigger secondary dormancy, which are crucial to surviving and reproducing in these unique environments. The results offer new insights into the germination ecophysiology of MTPs species and their regeneration niche in temporary wetlands.

地中海临时池塘(mtp)是动态栖息地,其中低水平的溶解氧会严重影响植物的生命。研究了低氧和近缺氧对该生境14种植物种子萌发和次生休眠的影响。将吸收的种子置于不同的氧气浓度(0.1%、5%、10%或21% O2)下,光照和黑暗均可。我们还测试了种子在有氧条件下恢复发芽的能力。我们测量了三种具有形态生理休眠的物种在缺氧处理后和恢复期间的胚胎生长情况,这是该休眠类中很少研究的反应。我们的发现揭示了广泛的物种特异性反应。在光照条件下,缺氧没有抑制一半的被试物种的发芽,而近缺氧完全抑制了所有物种的发芽。然而,一旦有氧条件恢复,大多数种子完全恢复萌发能力。有趣的是,黑暗中的缺氧减少或阻止了某些物种的发芽,并特异性地诱导了朱us bufonius的二次休眠。令人惊讶的是,在低氧条件下,白莲籽失去了萌发所需的光。在三种形态生理休眠的毛茛属植物中,缺氧减慢了胚胎的生长,从而延迟了发芽的恢复。这项研究表明,MTPs物种已经进化出适应能力,从对缺氧条件的耐受性到触发二次休眠的能力,这对于在这些独特的环境中生存和繁殖至关重要。研究结果为临时湿地中MTPs的萌发生态生理及其更新生态位的研究提供了新的思路。
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引用次数: 0
Downregulation of GmDIS1 improves drought and heat stress tolerance in soybean. 下调GmDIS1基因可提高大豆的抗旱性和耐热性。
IF 3.6 3区 生物学 Q1 PLANT SCIENCES Pub Date : 2026-03-01 Epub Date: 2025-12-02 DOI: 10.1111/plb.70151
R Tiwari, A K Singh, M V Rajam

Soybean (Glycine max), is an important oilseed crop that plays a vital role in ensuring global food security. However, it is susceptible to multiple abiotic stresses that can reduce yield. The ubiquitination-proteasome pathway is a crucial regulatory mechanism that controls a broad range of processes in plants. We investigated the function of Glycine max drought-induced SINA (GmDIS1), an E3 ligase gene, in soybean abiotic stress tolerance using Agrobacterium-mediated transformation to develop soybean GmDIS1-RNAi transgenic lines. GmDIS1 was significantly induced under drought and heat stress. Several physiological traits revealed resilience of GmDIS1-RNAi lines under drought and heat stress. The functions of stress-related genes, such as AOS and GmPAL were investigated to dissect the pathways that contribute to drought and heat tolerance in GmDIS1-RNAi lines. The results suggest that decreasing expression of GmDIS1 can enhance soybean tolerance to drought and heat, and also provide a significant target for developing more drought- and heat-tolerant soybean varieties and other crops.

大豆(Glycine max)是一种重要的油料作物,对保障全球粮食安全起着至关重要的作用。然而,它容易受到多种非生物胁迫,从而降低产量。泛素化-蛋白酶体途径是控制植物一系列生理过程的重要调控机制。我们利用农杆菌介导的转基因技术,研究了甘氨酸max干旱诱导的E3连接酶基因SINA (GmDIS1)在大豆非生物抗逆性中的作用。GmDIS1在干旱和热胁迫下受到显著诱导。一些生理性状揭示了GmDIS1-RNAi系在干旱和热胁迫下的恢复力。研究了胁迫相关基因(如AOS和GmPAL)的功能,以剖析GmDIS1-RNAi系干旱和耐热性的途径。结果表明,降低GmDIS1的表达可提高大豆的抗旱性和耐热性,为开发更多的抗旱性和耐热性大豆品种和其他作物提供了重要的靶点。
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引用次数: 0
Plant accession and insect infestation, rather than silicon supplementation, shape defence strategies of Arabidopsis halleri towards a leaf beetle. 拟南芥对叶甲虫的防御策略是由植物加入和昆虫侵染决定的,而不是硅的补充。
IF 3.6 3区 生物学 Q1 PLANT SCIENCES Pub Date : 2026-03-01 Epub Date: 2025-12-22 DOI: 10.1111/plb.70160
R Putra, M Paulic, C Müller

Little is known about the functional role of silicon (Si) in metal-hyperaccumulating plant species, such as Arabidopsis halleri. We investigated the responses of A. halleri from two accessions, Bestwig (Best) and Langelsheim (Lan), to Si supplementation and insect infestation in two controlled full-factorial experiments. Plants were grown in soil either unsupplemented (-Si) or supplemented (+Si) with Si. Some of these plants were kept either uninfested or infested by larvae of the leaf beetle Phaedon cochleariae. Shoot chemical and mechanical traits and plant resistance against the larvae were quantified. Detached leaves from the remaining plants were used to examine whether trichome density and leaf area consumed by larvae were influenced by the accession and/or Si. We found that Si supplementation, but not insect infestation or their interaction, led to twice as high concentrations of shoot Si in +Si in comparison to -Si plants. Insect relative growth rate was not impacted by Si, but by accession, namely lower when larvae fed on Lan than on Best plants. Likewise, leaf area consumed by larvae was consistently lower in the former accession. The density of trichomes was twice as high in plants of the Lan than the Best accession. Uninfested +Si plants contained the highest C/N in both accessions. The composition of glucosinolates differed between accessions, with some glucosinolates being induced by Si, insect infestation or both in the Best plants only. Our findings highlight distinct (induced) defence strategies within A. halleri plants, which may indicate different local adaptations of the source populations.

人们对硅在金属超富集植物(如拟南芥)中的功能作用知之甚少。通过两个对照全因子试验,研究了Bestwig (Best)和Langelsheim (Lan)两个种质对硅补充和虫害的响应。植物在未添加(-Si)或添加(+Si) Si的土壤中生长。其中一些植物要么不被叶甲虫侵染,要么被叶甲虫幼虫侵染。定量测定了茎部化学机械性状和植株对幼虫的抗性。利用剩余植株的离体叶片来检测幼虫消耗的毛状体密度和叶面积是否受到添加和/或Si的影响。我们发现,与-Si植物相比,添加Si(而不是昆虫侵扰或它们的相互作用)导致+Si植物的茎部Si浓度高出两倍。昆虫的相对生长速率不受Si的影响,但受添加量的影响,即以Lan为食的幼虫低于以Best为食的幼虫。同样,幼虫消耗的叶面积也在前一阶段持续降低。兰系植株的毛状体密度是最佳植株的2倍。未侵染+Si植株的碳氮比最高。不同种质间硫代葡萄糖苷的组成存在差异,某些硫代葡萄糖苷仅在最佳植株中由硅、虫害或两者共同诱导产生。我们的研究结果突出了黑桫椤植物中不同的(诱导的)防御策略,这可能表明源种群的不同本地适应性。
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引用次数: 0
Artificial rainfall patterns alter non-structural carbohydrate allocation to modulate growth and eco-stoichiometry in Cyphomandra betacea seedlings. 人工降雨模式通过改变非结构性碳水化合物的分配来调节槟榔树幼苗的生长和生态化学计量。
IF 3.6 3区 生物学 Q1 PLANT SCIENCES Pub Date : 2026-03-01 Epub Date: 2025-12-03 DOI: 10.1111/plb.70152
X Li, H Zeng, L Sun, H Guo, X Cha, Q Dong

Cyphomandra betacea, a valuable understory crop in southwestern China, exhibits high sensitivity to water availability. Under global climate change with increasingly erratic precipitation, understanding how Cyphomandra betacea, seedlings respond to rainfall variations is crucial for sustaining this distinctive industry. Through controlled experiments, this work systematically investigates how different rainfall patterns affect seedling growth and physiology, providing a theoretical basis for science-based management under future climate scenarios. Seedlings were subjected to a four-month simulated rainfall experiment with two rainfall intervals (T: 3-day; T+: 6-day) and three rainfall amounts (W: control; W+: +40%; W-: -40%). Biomass, non-structural carbohydrates (NSC), and carbon, nitrogen, phosphorus stoichiometric characteristics were analysed. Seedling growth is more sensitive to variations in rainfall amount, and appropriate increases in rainfall can promote seedling growth and development. Under changes in rainfall patterns, seedlings prioritize the storage of NSC in stems, followed by leaves, with the lowest allocation to roots. Nitrogen content within organs is pivotal for the composition of NSC and can regulate the sugar-starch conversion process. The July W+T treatment resulted in optimal performance for the majority of growth indicators and demonstrated the highest nutrient accumulation efficiency. We identified a stem-preferential carbon allocation strategy and systemic N limitation, offering key insights for conservation and cultivation under changing climates.

槟榔仙子是中国西南重要的林下作物,对水分敏感性较高。在全球气候变化和降水越来越不稳定的情况下,了解甜菜花苗如何对降雨变化做出反应对于维持这一独特的产业至关重要。通过对照实验,系统研究了不同降雨模式对幼苗生长和生理的影响,为未来气候情景下的科学管理提供理论依据。采用2个降雨间隔(T: 3天;T+: 6天)和3个降雨量(W:对照;W+: +40%; W-: -40%)对幼苗进行为期4个月的模拟降雨试验。分析了生物量、非结构碳水化合物(NSC)和碳、氮、磷的化学计量特征。幼苗生长对降雨量的变化更为敏感,适当增加降雨量可促进幼苗生长发育。在降雨模式的变化下,幼苗将NSC储存在茎中,其次是叶片,而根的分配最低。器官内氮含量对NSC的组成至关重要,并能调节糖-淀粉转化过程。7月W+T处理的大部分生长指标表现最佳,养分积累效率最高。我们确定了茎优先碳分配策略和系统氮限制,为气候变化下的保护和种植提供了关键见解。
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