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Sodium nitroprusside as a priming agent induces drought stress tolerance in Citrus 硝普钠诱导柑橘抗旱性
IF 5.4 Q1 PLANT SCIENCES Pub Date : 2025-06-09 DOI: 10.1016/j.cpb.2025.100508
Emanuele Scialò , Angelo Sicilia , Angela Roberta Lo Piero
Priming is a process whereby exposure to a mild stress or specific chemical stimulus enhances plants' resilience to future biotic and abiotic stresses. Signalling molecules such as hydrogen peroxide (H2O2) and nitric oxide (NO) function as priming agents. In this study, Bitters (C22) citrus rootstock was treated with the NO donor sodium nitroprusside (SNP) and subjected to drought stress. Malondialdehyde (MDA) and H2O2 levels were measured to assess oxidative stress. Primed plants showed significantly higher tolerance to water scarcity than non-primed ones. RNA-seq analysis revealed that priming, followed by drought stress, regulated a broad spectrum of stress responses, enhancing the expression of genes involved in photosynthetic efficiency and antioxidant activity, reallocating energy, and reinforcing external barriers and xylem vessels. As concerns phytohormones, analysis of gene expression clearly indicated that auxin biosynthesis and signalling were activated, whereas those involving ethylene were repressed. Moreover, the application of weighted gene co-expression network analysis (WGCNA) enabled the identification of genes whose expression showed positive or negative correlations with the levels of MDA and/or H2O2. This study provides insights into the role of priming in improving Citrus adaptability to water scarcity and identifying molecular strategies and candidate genes to enhance drought tolerance. To our knowledge, this is the first study correlating transcriptomic data with priming-induced drought tolerance in Citrus.
启动是一个过程,暴露于温和的压力或特定的化学刺激,以提高植物对未来的生物和非生物压力的恢复能力。过氧化氢(H2O2)和一氧化氮(NO)等信号分子起着引发剂的作用。本研究采用NO供体硝普钠(SNP)处理Bitters (C22)柑橘砧木,进行干旱胁迫。测定丙二醛(MDA)和H2O2水平以评估氧化应激。处理过的植株对缺水的耐受性显著高于未处理过的植株。RNA-seq分析显示,干旱胁迫后的启动调控了广泛的胁迫反应,增强了参与光合效率和抗氧化活性、能量重新分配、强化外部屏障和木质部导管的基因的表达。在植物激素方面,基因表达分析清楚地表明生长素的生物合成和信号传导被激活,而涉及乙烯的基因则被抑制。此外,应用加权基因共表达网络分析(weighted gene co-expression network analysis, WGCNA),可以鉴定出表达与MDA和/或H2O2水平呈正相关或负相关的基因。本研究揭示了启动在提高柑橘对缺水的适应性、确定提高柑橘抗旱性的分子策略和候选基因中的作用。据我们所知,这是第一个将转录组学数据与柑桔引物诱导的耐旱性联系起来的研究。
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引用次数: 0
Intra- and inter-population variation in Spinacia turkestanica: Implications for spinach genetic resources sampling 土耳其菠菜居群内和居群间变异:菠菜遗传资源取样的意义
IF 5.4 Q1 PLANT SCIENCES Pub Date : 2025-06-06 DOI: 10.1016/j.cpb.2025.100507
Rob van Treuren , Magdalena Krysiak , Jan-Kees Goud , Ryo Kimura , Chris Kik
Spinacia turkestanica Iljin is closely related to cultivated spinach (S. oleracea L.) and therefore of interest to genebank curators and plant breeders. In 2008 an expedition was carried out in Tajikistan and Uzbekistan to collect seed samples of S. turkestanica. Eighteen of these accessions and two additional accessions from Turkmenistan were characterized for 21 phenotypic traits and 50 SNP markers to study the distribution of variation within and between populations. Six varieties of cultivated spinach were included in the study as references. In general, S. turkestanica was clearly distinct from the reference varieties for phenotypic and molecular diversity. The main part of the observed diversity in S. turkestanica was distributed within rather than between populations. The populations from Tajikistan and Uzbekistan showed a positive correlation between phenotypic and genotypic distance (r = 0.458, p < 0.001) and between geographic distance and genotypic distance (r = 0.515, p < 0.001). Genetic differentiation was largest between populations from Tajikistan and populations from Uzbekistan, which are separated by the Zarafshan mountains. A resampling study showed that sampling 30–50 plants from each of 5–6 geographically widespread populations is sufficient to capture more than 98 % of the observed SNP alleles and more than 99 % of the observed phenotypic variation within the targeted area in Tajikistan and Uzbekistan. Whether this recommendation also holds for adaptive variation, such as resistance to biotic and abiotic stress, is subject of further study.
turkestanica Iljin与栽培菠菜(S. oleracea L.)密切相关,因此对基因库管理员和植物育种者感兴趣。2008年,在塔吉克斯坦和乌兹别克斯坦进行了一次考察,以收集S. turkestanica的种子样本。其中18份材料和另外2份来自土库曼斯坦的材料被鉴定为21个表型性状和50个SNP标记,以研究群体内和群体间的变异分布。6个栽培菠菜品种被纳入研究作为参考。总体而言,土耳其斯坦树在表型和分子多样性上与参考品种明显不同。观察到的土耳其南枝多样性主要分布于居群内而非居群间。塔吉克斯坦和乌兹别克斯坦人群表型与基因型距离呈正相关(r = 0.458,p <; 0.001),地理距离与基因型距离呈正相关(r = 0.515,p <; 0.001)。来自塔吉克斯坦的种群和来自乌兹别克斯坦的种群之间的遗传分化最大,这两个种群被Zarafshan山脉隔开。一项重新采样研究表明,在塔吉克斯坦和乌兹别克斯坦的目标区域内,从5-6个地理上广泛分布的种群中每个种群取样30-50株植物,就足以捕获观察到的SNP等位基因的98% %以上和观察到的表型变异的99% %以上。这一建议是否也适用于适应性变异,如对生物和非生物胁迫的抗性,还有待进一步研究。
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引用次数: 0
Drought mitigation in plants through root exudate-mediated rhizosphere interactions: Opportunities for future research 通过根分泌物介导的根际相互作用缓解植物干旱:未来研究的机会
IF 5.4 Q1 PLANT SCIENCES Pub Date : 2025-06-04 DOI: 10.1016/j.cpb.2025.100504
Salam Suresh Singh, Ngangbam Somen Singh, Emilynruwaka Lamare, Ningthoujam Ranjana Devi, Shadokpam Anjali Devi, Remei Kaguijenliu, Biki Takum, Keshav Kumar Upadhyay, Shri Kant Tripathi
Drought is among the most significant environmental factors that frequently limits the growth and productivity of terrestrial plants, making them susceptible to various diseases and resulting in the death of many species each year. Because the plants could not relocate to avoid environmental stresses (i.e., drought, cold temperatures, and high salinity), they developed specific adaptive mechanisms at the root-soil interface to cope with these stresses, especially drought. For instance, under drought conditions, plants change the composition of root exudates by increasing the concentrations of abscisic acid (ABA). This hormone is transported through the xylem transport system to plant leaves, signalling the leaf stomata to regulate stomatal activity. It reduces water loss in plants and enhances their resistance to drought conditions. This review examines the role of soil-root-microbe interactions under drought stress and highlights how this interaction influences nutrient cycling, osmotic pressure adjustment, signalling pathways, and microbial recruitment to enhance plant resilience under drought stress. Furthermore, the mechanisms by which root exudates enhance plant resilience through nitrogen and phosphorus cycling, detoxification of aluminium toxicity, and regulation of stomatal activity are discussed. Understanding these processes and mechanisms provides new insights into developing sustainable forest and agricultural management practices that enhance plant productivity under drought conditions by increasing their resilience in a changing environment.
干旱是最重要的环境因素之一,经常限制陆生植物的生长和生产力,使它们容易受到各种疾病的影响,并导致每年许多物种死亡。由于植物不能迁移以避免环境胁迫(如干旱、低温和高盐度),因此它们在根-土壤界面发展了特定的适应机制来应对这些胁迫,特别是干旱。例如,在干旱条件下,植物通过增加脱落酸(ABA)的浓度来改变根分泌物的组成。这种激素通过木质部运输系统输送到植物叶片,向叶片气孔发出信号,调节气孔活动。它减少了植物的水分流失,增强了它们对干旱条件的抵抗力。本文综述了干旱胁迫下土壤-根-微生物相互作用的作用,并强调了这种相互作用如何影响养分循环、渗透压调节、信号通路和微生物招募,以增强植物在干旱胁迫下的抗逆性。此外,还讨论了根系分泌物通过氮磷循环、铝毒解毒和调节气孔活性等途径增强植物抗逆性的机制。了解这些过程和机制为制定可持续森林和农业管理实践提供了新的见解,这些实践可通过提高植物在不断变化的环境中的适应能力来提高干旱条件下的植物生产力。
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引用次数: 0
Microbes and metabolites of a plant-parasite interaction: Deciphering the ecology of Tetrastigma host choice in the world’s largest parasitic flower, Rafflesia 植物-寄生虫相互作用的微生物和代谢物:解读世界上最大的寄生花莱佛士花中四柱花寄主选择的生态学
IF 5.4 Q1 PLANT SCIENCES Pub Date : 2025-06-01 Epub Date: 2025-02-04 DOI: 10.1016/j.cpb.2025.100456
Jeanmaire Molina , Roche C. de Guzman , Rinat Abzalimov , Wenkai Huang , Anusha Guruprasad , Ronniel Pedales , Adhityo Wicaksono , Destiny Davis , John Rey Callado , Hans Bänziger , Piyakaset Suksathan , William Eaton , Pride Yin , Marco Bürger , Mick Erickson , Stephen Jones , James Adams , Susan Pell
Rafflesia, known for producing the world’s largest flowers, is a holoparasite found only in Southeast Asia's rapidly diminishing tropical forests. Completely dependent on its Tetrastigma host plants, Rafflesia grows covertly within its host until flowering, but the ecological factors driving host susceptibility are unknown. With most Rafflesia species on the brink of extinction due to habitat loss, understanding the complex ecological interactions between Rafflesia and its host is crucial for conservation. In this study, we integrated metagenomic data with metabolomic profiles to identify potential functional relationships between microbial communities and specific metabolites, shedding light on their ecological roles in Rafflesia's life cycle. Key findings reveal that microbial taxa such as Microbacteriaceae and Nocardioidaceae correlate with elevated levels of polyphenols, particularly gallic acid derivatives, which may shape the chemical environment conducive to Rafflesia development. Complex-carbon-degrading bacteria thrive in the chemically distinct environment of Rafflesia buds, while an unknown group of Saccharimonadales was enriched in Tetrastigma host species. Docosenamide production in Rafflesia buds and their hosts may facilitate parasitic infection, while coumarin compounds in non-host Tetrastigma species may exert allelopathic effects. The enrichment of gallic acid derivatives, the phytohormone adenine, and gall-associated bacteria suggests that Rafflesia buds may function similarly to plant galls, manipulating host tissues to support their reproductive development. This study highlights the dynamic microbial shifts during Rafflesia’s development, emphasizing its symbiotic relationship with microbial communities and hosts. In identifying essential microbial and chemical conditions that could improve propagation techniques, this research has practical applications in ex situ conservation efforts, aiding in the rescue of the world’s largest flowers from the brink of extinction.
以开出世界上最大的花而闻名的莱佛士花是一种全寄生植物,只在东南亚迅速减少的热带森林中发现。莱佛士花完全依赖其四柱属寄主植物,在开花前在寄主体内隐蔽生长,但驱动寄主敏感性的生态因素尚不清楚。由于大多数Rafflesia物种由于栖息地丧失而濒临灭绝,了解Rafflesia与其宿主之间复杂的生态相互作用对于保护Rafflesia至关重要。在这项研究中,我们将宏基因组数据与代谢组学数据相结合,以确定微生物群落与特定代谢物之间的潜在功能关系,揭示它们在莱佛士生命周期中的生态作用。主要研究结果表明,微细菌科和Nocardioidaceae等微生物类群与多酚含量升高有关,特别是没食子酸衍生物,这可能塑造了有利于莱佛士发育的化学环境。复杂的碳降解细菌在Rafflesia芽的化学环境中茁壮成长,而一组未知的Saccharimonadales在tetrastigrma宿主物种中丰富。Rafflesia芽及其寄主产生的Docosenamide可能促进寄生虫感染,而非寄主Tetrastigma物种中的香豆素化合物可能具有化感作用。没食子酸衍生物、植物激素腺嘌呤和胆囊相关细菌的富集表明,Rafflesia芽的功能可能类似于植物的胆囊,操纵宿主组织以支持其生殖发育。本研究强调了莱佛士花发育过程中微生物的动态变化,强调了其与微生物群落和宿主的共生关系。在确定可以改善繁殖技术的必要微生物和化学条件方面,这项研究在移地保护工作中具有实际应用价值,有助于将世界上最大的花朵从灭绝的边缘拯救出来。
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引用次数: 0
Two-year QTL dissecting of high harvest index and related traits in a novel rice variety Yuenongsimaio 水稻新品种粤农四麦高产指数及相关性状的2年QTL剖析
IF 5.4 Q1 PLANT SCIENCES Pub Date : 2025-06-01 Epub Date: 2025-04-05 DOI: 10.1016/j.cpb.2025.100475
Shiguang Wang , Liting Zhang , Wei Liu, Xiaofei Wang, Haoxiang Wu, Hao Chen, Tengkui Chen, Zhanhua Lu, Xiuying He
High harvest index (HI), defined as the grain yield-to-biomass ratio (≥ 0.55), reflects a well-balanced source-sink relationship. It is a key trait in rice high-HI breeding programs, which has proven to be a successful strategy for developing super high-yield rice varieties. However, its genetic basis remains elusive. This study conducted QTL analysis for HI-related traits using a recombinant inbred line (RIL) population derived from a cross between a geng/japonica cultivar, Lijiangxintuanheigu (LTH), and a high HI xian/indica variety, Yuenongsimiao (YNSM). A high‑density genetic map with 6674 bin markers identified 97 QTLs across 12 HI-related traits, forming 13 QTL clusters that affect the source-sink related traits in rice. These bin markers were converted from 1,009,324 high-quality SNPs sourced from the sequenced RIL population. Notably, qRSC1 (QTL cluster of rice source capacity 1), which included qFLL1, qSTW1, qBM1.2, and qHI1, was tightly linked to the semi-dwarf gene sd1 and collectively shaped the high HI plant architecture of YNSM. In contrast, qRSC3 (qFLL3/qFLW3/qSTW3/qBM3.1/qHI3.1) exhibited an opposite effect and positively regulated source-related traits. Among nine QTLs associated with yield per plant (YPP), only qYPP2.2, part of qRSS2 (QTL cluster of rice sink size 2), was consistently detected over two consecutive years. qRSS2 governed sink size by integrating multiple yield-related QTLs, including qYPP2.2. Overall, qRSC1, qRSC3, and qRSS2 collectively optimized source-sink balance, enabling YNSM’s high HI and high yields. These findings provide insights into the genetic basis of high HI in YNSM and may facilitate breeding high-yielding rice with superior HI.
高收获指数(High harvest index, HI)是指粮食产量与生物量的比值(≥0.55),反映了一个平衡良好的源库关系。它是水稻高hi育种计划的关键性状,已被证明是培育超高产水稻品种的成功策略。然而,其遗传基础仍然难以捉摸。本研究利用改良粳稻品种“丽江新团黑谷”(LTH)与高产籼籼品种“越农四苗”(YNSM)杂交的重组自交系(RIL)群体,进行了高HI相关性状的QTL分析。在一个包含6674个bin标记的高密度遗传图谱中,鉴定出12个与水稻高致病性相关性状的97个QTL,形成13个影响水稻源库相关性状的QTL集群。这些bin标记是由1009324个来自RIL群体的高质量snp转化而来。值得注意的是,包括qFLL1、qSTW1、qBM1.2和qHI1在内的qRSC1(水稻源容量1的QTL集群)与半矮秆基因sd1紧密相连,共同塑造了YNSM的高HI植株结构。相比之下,qRSC3 (qFLL3/qFLW3/qSTW3/qBM3.1/qHI3.1)表现出相反的作用,并正调控源相关性状。在9个与单株产量(YPP)相关的QTL中,只有qYPP2.2,即qRSS2(水稻库大小2的QTL簇)的一部分,连续两年被检测到。qRSS2通过整合多个与产量相关的qtl(包括qYPP2.2)来控制汇大小。总体而言,qRSC1、qRSC3和qRSS2共同优化了源汇平衡,实现了YNSM的高HI和高产量。这些发现为研究高HI的遗传基础提供了依据,并为培育高HI的高产水稻提供了可能。
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引用次数: 0
Comprehensive transcriptomic and metabolomic analyses reveal developmental changes in one-year-old and two-year-old Polygonatum cyrtonema hua 综合转录组学和代谢组学分析揭示了一岁和两岁黄精的发育变化
IF 5.4 Q1 PLANT SCIENCES Pub Date : 2025-06-01 Epub Date: 2025-05-15 DOI: 10.1016/j.cpb.2025.100495
Liang Wu , Yuqin Qiu , Yuting Fang , Can Huang , Dawei Song , Duohui Li , Li Zhao , Haiyang Zhao , Lamei Qi , Lishang Dai
Polygonatum cyrtonema Hua is traditional Chinese herbal medicine rich in active ingredients, such as polysaccharides, flavonoids, alkaloids, and others that contribute to human health. As a perennial plant, its culture duration may influence the accumulation of these functional active ingredients in its tissues. To investigate how secondary metabolites and gene expression levels change with plant growth age, we carried out metabolomic analysis on root tissues of 1-year-old and 2-year-old plants, alongside transcriptome analysis was of leaf tissues. Using LC-MS, we identified identified 81 and 80 differentially expressed metabolites(DEMs)in positive and negative ion modes, respectively. Of these, 80 differential metabolites showed higher accumulation in 2-year-old plants. The relative contents of nucleotides and analogues, lipids, organic acids, phenylpropanoids, alkaloids, and organic oxygen molecules increased with increasing growth age. Transcriptome analysis further revealed 2068 differentially expressed genes, including 1026 up-regulated and 1042 down-regulated genes. A total of 102 metabolic pathways were enriched, with glucose metabolism, phenylpropanoid biosynthesis and flavonoid biosynthesis, being among the most enriched metabolic pathways. These results show that longer culture duration enhances the active of metabolic pathways components. Overall, this study study integrates multi-omics techniques to demonstrate age-related changes in metabolites and genes profiles in P. cyrtonema, providing valuable insights for the identification of candidate genes involved in the biosynthesis of active substances.
黄精是一种传统的中草药,含有丰富的活性成分,如多糖、黄酮类化合物、生物碱等,对人体健康有益。作为多年生植物,其培养时间可能影响其组织中这些功能性活性成分的积累。为了研究次生代谢物和基因表达水平随植物生长年龄的变化,我们对1年生和2年生植物的根组织进行了代谢组学分析,并对叶片组织进行了转录组学分析。利用LC-MS,我们分别鉴定了81种和80种正负离子模式下的差异表达代谢物(DEMs)。其中,80种差异代谢物在2年生植物中积累较高。随着生长年龄的增加,核苷酸和类似物、脂类、有机酸、苯丙素、生物碱和有机氧分子的相对含量增加。转录组分析进一步揭示了2068个差异表达基因,其中上调基因1026个,下调基因1042个。共有102条代谢途径被富集,其中葡萄糖代谢、苯丙类生物合成和类黄酮生物合成是富集最多的代谢途径。结果表明,培养时间越长,代谢途径成分的活性越高。总的来说,本研究整合了多组学技术来证明胞质假体中代谢物和基因谱的年龄相关变化,为鉴定参与活性物质生物合成的候选基因提供了有价值的见解。
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引用次数: 0
Brassinosteroids in maize: Biosynthesis, signaling pathways, and impacts on agronomic traits 玉米中的油菜素内酯:生物合成、信号通路和对农艺性状的影响
IF 5.4 Q1 PLANT SCIENCES Pub Date : 2025-06-01 Epub Date: 2025-03-11 DOI: 10.1016/j.cpb.2025.100465
Jingjie Zhang , Shiyi Wu , Miao Wang , Jinke Chang , Xiaopeng Li
Maize is one of the most widely cultivated crops for producing human food, animal feed, and ethanol biofuel. Recent studies have indicated that brassinosteroids (BRs), essential phytohormones for plant growth, development and stress adaptation across plant species, significantly regulate several maize agronomic traits, such as plant height, leaf angle, reproductive development and kernel size. So far, most previous reviews have mainly focused on discussing molecular functions of BRs in model plants like Arabidopsis and rice. A detailed summary of BRs in maize, however, has not yet been presented. In this review, we provide a comprehensive overview of the biosynthesis and signaling transduction pathways of BRs, and summarize the roles of BRs in regulating some agronomic traits such as plant architecture and kernel yield in maize. We also discuss potential opportunities and challenges associated with leveraging BR-centered molecular design strategies for maize improvement.
玉米是用于生产人类食品、动物饲料和乙醇生物燃料的最广泛种植的作物之一。近年来的研究表明,油菜素内酯(BRs)是植物生长发育和逆境适应所必需的植物激素,对玉米的株高、叶角、生殖发育和籽粒大小等农艺性状具有显著调控作用。目前,对BRs在拟南芥、水稻等模式植物中的分子功能研究较多。然而,目前还没有关于玉米BRs的详细总结。本文综述了BRs的生物合成和信号转导途径,并对BRs在调控玉米植株结构和籽粒产量等农艺性状中的作用进行了综述。我们还讨论了利用以br为中心的分子设计策略进行玉米改良的潜在机遇和挑战。
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引用次数: 0
Integrating microplastic research in sustainable agriculture: Challenges and future directions for food production 将微塑料研究纳入可持续农业:粮食生产的挑战和未来方向
IF 5.4 Q1 PLANT SCIENCES Pub Date : 2025-06-01 Epub Date: 2025-02-05 DOI: 10.1016/j.cpb.2025.100458
Marcelo Illanes , María-Trinidad Toro , Mauricio Schoebitz , Nelson Zapata , Diego A. Moreno , María Dolores López-Belchí
In agroecosystems, plants are frequently subjected to a wide range of environmental stressors that have a substantial influence on plant physiology, crop performance, and food security. Abiotic stress responses to plant crop physiology and performance have been widely studied, but the co-occurrence of stressors, such as emerging contaminants (e.g., pharmaceuticals, plastic particles, or pesticides), combined with environmental conditions, remains understudied. Microplastics (MPs) have been identified as modifiers of plant physiology; therefore, these particles present a risk to the quality and safety of plant food production systems. One relevant question is how these emerging pollutants interact with the increasingly extreme environmental conditions of today. For example, evidence indicates that the interaction of MPs particles with elevated levels of ambient CO2 can modify stomatal conductance. In addition, their interaction with high temperatures may induce increased oxidative stress, whereas drought conditions can adversely affect vegetative growth. Salinity has been shown to alter root development, and MP particles can enhance the adsorption of trace metals onto plant tissues, thereby compromising food safety and increasing health risks. Currently, the application of omics technologies, including genomics, transcriptomics, and metabolomics, offers novel insights into molecular mechanisms that enable the identification of specific biomarkers associated with MP exposure. Furthermore, machine learning algorithms can be employed to analyze complex datasets, enhancing our ability to predict the impacts of MPs on plant health and crop performance under different environmental conditions. These results are significant for agricultural practices and policy formulation. As the prevalence of MPs in the environment continues to escalate, policymakers should address the potential risks these contaminants constitute to food safety and agricultural sustainability. This review compiles and synthesizes the most recent evidence regarding the impact of various stressors on crop quality and performance, with a particular emphasis on the interactions involving different plastic particles present in the environment and evaluates their potential risks to food safety and environmental resilience.
在农业生态系统中,植物经常受到各种各样的环境胁迫,这些环境胁迫对植物生理、作物性能和粮食安全产生重大影响。非生物胁迫对植物生理和生产性能的影响已经得到了广泛的研究,但胁迫源如新出现的污染物(如药物、塑料颗粒或农药)与环境条件的共同发生仍未得到充分的研究。微塑料(MPs)已被确定为植物生理调节剂;因此,这些颗粒对植物性食品生产系统的质量和安全构成威胁。一个相关的问题是,这些新出现的污染物如何与当今日益极端的环境条件相互作用。例如,有证据表明,MPs颗粒与环境CO2水平升高的相互作用可以改变气孔导度。此外,它们与高温的相互作用可能导致氧化应激增加,而干旱条件可能对营养生长产生不利影响。盐度已被证明会改变根的发育,而MP颗粒可以增强微量金属在植物组织上的吸附,从而危及食品安全并增加健康风险。目前,组学技术的应用,包括基因组学、转录组学和代谢组学,为识别与MP暴露相关的特定生物标志物的分子机制提供了新的见解。此外,机器学习算法可以用于分析复杂的数据集,增强我们预测不同环境条件下MPs对植物健康和作物性能影响的能力。这些结果对农业实践和政策制定具有重要意义。随着MPs在环境中的流行程度不断上升,政策制定者应该解决这些污染物对食品安全和农业可持续性构成的潜在风险。本综述汇编和综合了有关各种应激源对作物质量和性能影响的最新证据,特别强调了涉及环境中不同塑料颗粒的相互作用,并评估了它们对食品安全和环境恢复力的潜在风险。
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引用次数: 0
Single-cell RNA sequencing reveals transcriptional regulation and metabolic pathways of terpenoid biosynthesis in developing Cinnamomum camphora leaf cells 单细胞RNA测序揭示了发育中的香樟叶细胞萜类生物合成的转录调控和代谢途径
IF 5.4 Q1 PLANT SCIENCES Pub Date : 2025-06-01 Epub Date: 2025-03-10 DOI: 10.1016/j.cpb.2025.100467
Zheng Qin , Caihui Chen , Ting Zhang , Yanfang Wu , Yongjie Zheng
Cinnamomum camphora (Camphor tree) is an economically significant species known for its terpenoid-rich essential oils. However, the molecular mechanisms underlying its leaf development remain poorly understood, especially at the cellular level. In this study, we applied high-throughput single-cell RNA sequencing (scRNA-seq) to profile the transcriptomic landscape of developing C. camphora leaves, identifying eight distinct cell populations, including mesophyll, epidermal, guard, vascular, and proliferating cells. Pseudotime trajectory analysis revealed the dynamic progression of mesophyll cell differentiation, with three distinct developmental states observed as cells transitioned from proliferating to differentiated stages. We identified key metabolic pathways involved in terpenoid biosynthesis, lipid metabolism, and photosynthesis. Notably, genes such as 4CLL9, CHLP or GPPS1 showed cell-type-specific expression in mesophyll or epidermal cells. Additionally, transcription factors from the MYB and bHLH families were enriched in specific cell types, regulating secondary metabolism and hormone signaling. This study not only provides a detailed transcriptomic atlas of C. camphora leaf development but also uncovers novel cell-type-specific marker genes, key regulatory networks, and metabolic pathways, offering valuable resources for future investigations into terpenoid metabolism and cellular differentiation in woody species.
樟树(camomum camphora)是一种经济上重要的物种,以其富含萜类化合物的精油而闻名。然而,其叶片发育的分子机制仍然知之甚少,特别是在细胞水平上。在这项研究中,我们应用高通量单细胞RNA测序(scRNA-seq)分析了发育中的香樟叶片的转录组景观,鉴定了8个不同的细胞群,包括叶肉细胞、表皮细胞、保卫细胞、维管细胞和增殖细胞。伪时间轨迹分析揭示了叶肉细胞分化的动态过程,在细胞从增殖到分化的过程中观察到三种不同的发育状态。我们确定了萜类生物合成、脂质代谢和光合作用的关键代谢途径。值得注意的是,4CLL9、CHLP或GPPS1等基因在叶肉细胞或表皮细胞中表现出细胞类型特异性表达。此外,来自MYB和bHLH家族的转录因子在特定细胞类型中富集,调节次级代谢和激素信号传导。本研究不仅提供了详细的香樟叶片发育转录组图谱,还揭示了新的细胞类型特异性标记基因、关键调控网络和代谢途径,为进一步研究木本植物萜类代谢和细胞分化提供了宝贵的资源。
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引用次数: 0
Drug target screening for Rheumatoid Arthritis by Curcuma caesia through computational approach 基于计算方法的莪术类风湿性关节炎药物靶点筛选
IF 5.4 Q1 PLANT SCIENCES Pub Date : 2025-06-01 Epub Date: 2025-03-12 DOI: 10.1016/j.cpb.2025.100468
Ankita Pati , Mahendra Gaur , Atmaja Sahu , Bharat Bhusan Subudhi , Dattatreya Kar , Jyoti Ranjan Parida , Ananya Kuanar
Curcuma caesia has been a subject of inflammatory and autoimmune disease research, showing promising anti-inflammatory properties. The present research aims to investigate the anti-rheumatic potential of the rhizome through network pharmacology, molecular docking and molecular dynamic simulations approaches. Phytocompounds were retrieved from PubChem, and their targets were predicted using Swiss target prediction, SEA, SuperPred, and BindingDB. The 13 phytocompounds overlapping with its 41 predicted proteins and its related pathways generated a Cytoscape interaction network revealing that C. caesia may inhibit rheumatoid arthritis through different metabolic pathways. NFKB1, PRKCA, RAC1, STAT3, and TLR4 were identified as potential core targets while 13 compounds α-Terpineol, Ar-tumerone, 3,3,8,8-tetramethyl-tricyclo[5.1.0.0(2,4)] oct-5-ene-5-propanoic acid (TPA), Rosifoliol, 2-Nonanone, Terpinen-4-ol, Dihydrocarveol, 5-Nonanone, Camphene, Linalool, Bornyl acetate, Camphor were identified as potential core compounds. Molecular docking and Induced Fit Docking (IFD) analysis revealed that NFKB1, PRKCA, and RAC1, along with the newly discovered TPA compound, are the most significant targets and bioactive compounds, respectively. Furthermore, in interactions such as TPA-RAC1, TPA might be a potential "chelating ligand" and may play a role in lowering concentrations of metal in blood. In addition, the molecular dynamics simulation (MDS) studies for 200 ns elucidated the binding mechanism of TPA with NFKB1, PRKCA and RAC1. In conclusion, TPA has a promising inhibiting potential against Rheumatoid Arthritis and thus necessitates further validation through in vitro and in vivo experiments.Therefore, the present study revealed the main mechanisms behind the anti-rheumatic effects of C. caesia, paving the path for further research on these compounds.
姜黄一直是炎症和自身免疫性疾病研究的主题,显示出有希望的抗炎特性。本研究旨在通过网络药理学、分子对接和分子动力学模拟等方法研究黄芩的抗风湿潜能。从PubChem中检索植物化合物,并使用Swiss target prediction、SEA、SuperPred和BindingDB预测它们的靶标。13种植物化合物与其41种预测蛋白及其相关通路重叠,形成了一个细胞景观相互作用网络,表明茜草可能通过不同的代谢途径抑制类风湿关节炎。鉴定出NFKB1、PRKCA、RAC1、STAT3和TLR4为潜在核心靶点,鉴定出α-松油醇、Ar-tumerone、3,3,8,8-四甲基三环[5.1.0.0(2,4)]辛-5-烯-5-丙酸(TPA)、rossifoliol、2- nonanone、Terpinen-4-ol、二氢香芹醇、5-Nonanone、Camphene、Linalool、Bornyl acetate、Camphor等13个化合物为潜在核心靶点。分子对接和诱导匹配对接(IFD)分析显示,NFKB1、PRKCA和RAC1以及新发现的TPA化合物分别是最重要的靶点和生物活性化合物。此外,在诸如TPA- rac1的相互作用中,TPA可能是一种潜在的“螯合配体”,可能在降低血液中金属浓度方面发挥作用。此外,通过200 ns的分子动力学模拟(MDS)研究,阐明了TPA与NFKB1、PRKCA和RAC1的结合机制。综上所述,TPA对类风湿关节炎具有良好的抑制潜力,因此需要进一步通过体外和体内实验进行验证。因此,本研究揭示了茜草抗风湿作用的主要机制,为进一步研究这些化合物铺平了道路。
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引用次数: 0
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Current Plant Biology
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