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Synergy of La and low-dose LG2 for alleviating aphid stress in sorghum: A novel strategy for reduced chemical input La和低剂量LG2协同缓解高粱蚜虫胁迫:一种减少化学投入的新策略
IF 4.5 Q1 PLANT SCIENCES Pub Date : 2026-01-01 DOI: 10.1016/j.cpb.2026.100580
Qiang Ma, Jin Jia, Bo Tian, Peng Zhang, Lei Jian, Yutao Shao
To devise an efficient and low-toxicity strategy for aphid control, this study assessed the impacts of five spray treatments on sorghum exposed to 48-hour aphid stress. The treatments included lanthanum (La) alone, dimethoate (LG1) alone, La+LG2, La+LG3, and La+LG4. Among them, the La+LG2 treatment exhibited the most superior performance. La+LG2 significantly enhanced plant growth, as evidenced by increases in plant height, fresh weight, and dry weight. It also reduced cell membrane damage, as indicated by lower malondialdehyde (MDA) levels and relative electrical conductivity. In terms of photosynthesis, La+LG2 elevated the P-phase fluorescence intensity of the OJIP curve, improved the maximum quantum yield of photosystem II (Fv/Fm), optimized the energy distribution within photosystem II (increasing electron transport flux per reaction center, ETO/RC, and trapped energy flux per reaction center, TRO/RC, while decreasing absorbed energy flux per reaction center, ABS/RC, and dissipated energy flux per reaction center, DIO/RC), and promoted pigment synthesis. Additionally, La+LG2 alleviated oxidative damage by activating enzymatic antioxidants, including superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and glutathione peroxidase (GSH-PX). It also optimized the ascorbic acid-glutathione (ASA-GSH) cycle to scavenge reactive oxygen species (ROS) and maintain redox homeostasis. Meanwhile, at the molecular level, La+LG2 constructed a dual-regulatory network to enhance photosynthetic efficiency and maintain the homeostasis of reactive oxygen species (ROS). This was accomplished via the synergistic activation of photosynthesis-related genes and the differential regulation of respiratory burst oxidase homolog (Rboh) family genes. Overall, La+LG2 achieved an efficacy comparable to that of high-dose LG1 but with reduced chemical input. This reveals a multi-targeted stress regulation mechanism and provides theoretical support for the synergistic pest control strategy combining rare earth elements and low-toxicity agents, as well as for agricultural efforts to reduce pesticide use.
为了设计一种高效、低毒的防治策略,本研究评估了5种喷雾处理对高粱蚜虫胁迫48小时的影响。处理包括单独镧(La)、单独乐果(LG1)、La+LG2、La+LG3和La+LG4。其中,La+LG2处理性能最优。La+LG2显著促进植株生长,表现为株高、鲜重和干重的增加。通过降低丙二醛(MDA)水平和相对电导率,它也减少了细胞膜损伤。在光合作用方面,La+LG2提高了OJIP曲线的p相荧光强度,提高了光系统II的最大量子产率(Fv/Fm),优化了光系统II内的能量分布(增加了每个反应中心的电子传递通量(ETO/RC)和每个反应中心的捕获能通量(TRO/RC),降低了每个反应中心的吸收能通量(ABS/RC)和每个反应中心的耗散能通量(DIO/RC)),促进了色素的合成。此外,La+LG2通过激活酶抗氧化剂,包括超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)和谷胱甘肽过氧化物酶(GSH-PX),减轻氧化损伤。它还优化了抗坏血酸-谷胱甘肽(ASA-GSH)循环,以清除活性氧(ROS)并维持氧化还原稳态。同时,在分子水平上,La+LG2构建了一个双调控网络,以提高光合效率和维持活性氧(ROS)的稳态。这是通过光合作用相关基因的协同激活和呼吸爆发氧化酶同源(Rboh)家族基因的差异调节来实现的。总体而言,La+LG2达到了与高剂量LG1相当的疗效,但减少了化学物质的投入。揭示了多靶点胁迫调控机制,为稀土元素与低毒药剂的协同防治策略以及农业减少农药用量提供了理论支持。
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引用次数: 0
Microbial volatile organic compounds reshape plant hormonal networks and root herbivore defense 微生物挥发性有机化合物重塑植物激素网络和根食草动物防御
IF 4.5 Q1 PLANT SCIENCES Pub Date : 2026-01-01 DOI: 10.1016/j.cpb.2026.100584
Nipapan Kanjana , Penghui Guo , Zetian Deng , Muhammad Afaq Ahmed , Ismail Shah , Lisheng Zhang
Root-feeding herbivores impose substantial constraints on plant performance, yet the chemical signals coordinating belowground defence remain poorly resolved. Microbial volatile organic compounds (mVOCs)—highly diffusible metabolites produced by rhizosphere and endophytic microbes—have emerged as pivotal regulators of plant immunity and development. Recent evidence shows that specific mVOCs modulate jasmonic acid, salicylic acid, ethylene, auxin, and ROS-associated pathways, thereby reprogramming root architecture and priming defence responses during herbivore attack. Despite these advances, major mechanistic gaps persist, including how plants perceive mVOCs, how soil physicochemical conditions shape their diffusion and bioactivity, and how mVOCs integrate with plant-derived volatiles and metabolites to coordinate systemic signalling. Moreover, the roles of mVOCs in mediating multitrophic interactions—particularly their influence on root herbivore behaviour, microbial recruitment, and defence hormone crosstalk—remain largely unexplored. This review synthesizes current advances in mVOC biology and proposes conceptual frameworks linking microbial volatilomes to plant hormonal networks and belowground herbivore defence. A deeper understanding of these hidden chemical dialogues will inform strategies for enhancing crop resilience and developing sustainable root pest management.
以根为食的食草动物对植物的性能施加了实质性的限制,然而协调地下防御的化学信号仍然没有得到很好的解决。微生物挥发性有机化合物(mVOCs)是由根际和内生微生物产生的高度扩散代谢物,已成为植物免疫和发育的关键调节因子。最近的证据表明,特定的mVOCs调节茉莉酸、水杨酸、乙烯、生长素和ros相关途径,从而重新编程根结构,并在草食动物攻击时启动防御反应。尽管取得了这些进展,但主要的机制差距仍然存在,包括植物如何感知mVOCs,土壤物理化学条件如何影响其扩散和生物活性,以及mVOCs如何与植物源性挥发物和代谢物整合以协调系统信号。此外,mVOCs在介导多营养相互作用中的作用,特别是它们对根草食行为、微生物招募和防御激素相互作用的影响,在很大程度上仍未被探索。本文综述了微生物挥发性有机化合物生物学的最新进展,并提出了将微生物挥发性有机化合物与植物激素网络和地下食草动物防御联系起来的概念框架。更深入地了解这些隐藏的化学对话将为提高作物抗灾能力和发展可持续根虫害管理的战略提供信息。
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引用次数: 0
Floral ontogeny and development of the model plant Nicotiana benthamiana 模式植物烟叶的花体发生与发育
IF 4.5 Q1 PLANT SCIENCES Pub Date : 2026-01-01 DOI: 10.1016/j.cpb.2025.100578
Sandra Bretones, Teresa Barragán-Lozano, Salvador Núñez-Escánez, Rafael Lozano, Fernando J. Yuste-Lisbona
Nicotiana benthamiana is a model plant species widely used in molecular biology and biotechnology; however, it has historically lacked a detailed morphological framework for floral development. Here, we present a comprehensive characterization of N. benthamiana flower ontogeny, defining 14 floral stages from floral meristem initiation to anthesis. Using stereo- and scanning electron microscopy, we document the acropetal sequence of floral organ initiation and differentiation across four concentric whorls. Each stage is marked by distinct morphological features, starting with the domed floral meristem (Stage 1). Sepal primordia emerge first (Stage 2), followed by petal and stamen primordia (Stages 4 and 5), and two carpel primordia appear by Stage 6 to initiate gynoecium development. Through mid-development (Stages 6–8), petals and stamens expand within an enclosing calyx, while carpels remain unfused. By Stage 9, carpel fusion forms a single ovary with a differentiating stigma. Subsequent stages feature rapid elongation of petals and stamens, and partial calyx separation (Stages 11–12), allowing emergence of the corolla tube and style. Anthesis occurs at Stage 14, when the corolla lobes fully spread, exposing the mature reproductive organs. In parallel, we describe the coordinated development of male and female gametophytes, and further characterize post-anthesis fruit development, from fruit set through capsule maturation and dehiscence, thus completing the full reproductive cycle. This ontogenetic framework serves as a foundational reference for genetic and comparative development studies on flower organogenesis, reinforcing N. benthamiana as a versatile model system for Solanaceae research and a valuable tool for translational crop improvement.
benthamiana是一种在分子生物学和生物技术中广泛应用的模式植物;然而,它在历史上缺乏花发育的详细形态框架。在这里,我们提出了一个全面的表征benthamiana花的个体发生,定义14个花阶段从花分生组织形成到开花。利用立体电子显微镜和扫描电子显微镜,我们记录了四个同心轮生的花器官发生和分化的尖尖序列。每个阶段都有不同的形态特征,从圆顶花分生组织(阶段1)开始。首先出现萼片原基(第2阶段),其次是花瓣和雄蕊原基(第4和第5阶段),第6阶段出现两个心皮原基,开始雌蕊发育。在发育中期(6-8期),花瓣和雄蕊在一个封闭的花萼内扩张,而心皮仍未融合。到第9期,心皮融合形成具有分化柱头的单子房。随后的阶段特征是花瓣和雄蕊的快速伸长,部分花萼分离(阶段11-12),允许花冠筒和花柱的出现。花期14,花冠裂片完全展开,露出成熟的生殖器官。同时,我们描述了雄性和雌性配子体的协调发育,并进一步描述了开花后果实的发育,从坐果到蒴果成熟和开裂,从而完成了完整的生殖周期。这一个体发生框架为花器官发生的遗传和比较发育研究提供了基础参考,巩固了benthamiana作为茄科植物研究的通用模式系统和转化作物改良的有价值工具。
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引用次数: 0
Towards epigenetics in sugar beet – the ONT based reference 5mC methylome of Beta vulgaris ssp. vulgaris 甜菜表观遗传学研究——基于ONT的β - vulgaris ssp参考基因5mC甲基组。寻常的
IF 4.5 Q1 PLANT SCIENCES Pub Date : 2026-01-01 DOI: 10.1016/j.cpb.2026.100583
Muriel Wulfhorst , Katharina Sielemann , Nicola Schmidt , Prisca Viehöver , Aaron Kolbecher , Frank Johannes , Vinicius Vilperte , Britta Schulz , Tony Heitkam , Daniela Holtgräwe
Epigenetic modifications, such as DNA methylation, influence phenotypic plasticity and affect numerous plant traits. Genome-wide DNA methylation patterns differ among cell types, species, and developmental stages. Still, it remains poorly understood in non-model plants. Thus, the potential of epigenetic breeding approaches targeting DNA methylation in crop plants is not fully realised. This study focuses on sugar beet (Beta vulgaris L. ssp. vulgaris) and comprises the first long read-based reference DNA methylome for this species, generated using Oxford Nanopore Technologies (ONT) sequencing. The detection of 5-methyl cytosine (5mC) in the three sequence contexts (CG, CHG, and CHH) was performed with DeepSignal-plant. The 5mCartograph tool was developed to provide a detailed overview of 5mC methylation probabilities: A genome-wide 5mC reference methylome was established for the genotype KWS2320, including gene- and repeat-specific analyses and the identification of 2088 gene body methylated (gbM) genes, while 10,839 genes remained unmethylated. Genome-wide analysis re-detected more than 99 % of the 204.8 Mio reference cytosines, based on ONT read sets of at least 17.5 × mapped genome coverage. Of these cytosines, 14.5 % were classified as ‘highly methylated’ in young sugar beet leaves. Methylation levels followed typical plant patterns, being highest in CG (89.8 %), followed by CHG (62.8 %) and CHH (10.1 %) context. This detailed methylome provides a robust foundation for future studies - such as epi-pangenome generation - and supports potential breeding applications in crop improvement.
表观遗传修饰,如DNA甲基化,影响表型可塑性和影响许多植物性状。全基因组DNA甲基化模式因细胞类型、物种和发育阶段而异。然而,在非模式植物中,人们对其了解甚少。因此,以作物DNA甲基化为目标的表观遗传育种方法的潜力尚未完全实现。以甜菜(Beta vulgaris L. ssp)为研究对象。使用牛津纳米孔技术(ONT)测序生成了该物种的第一个基于读取的参考DNA甲基组。使用DeepSignal-plant检测三个序列背景(CG, CHG和CHH)中的5-甲基胞嘧啶(5mC)。开发5mCartograph工具以提供5mC甲基化概率的详细概述:为基因型KWS2320建立了全基因组5mC参考甲基组,包括基因特异性和重复特异性分析,并鉴定了2088个基因体甲基化(gbM)基因,而10,839个基因未甲基化。基于至少17.5个 × 基因组图谱的ONT读取集,全基因组分析重新检测到204.8万个参考胞嘧啶中的99. %以上。在这些胞嘧啶中,14.5 %被归类为“高度甲基化”的年轻甜菜叶。甲基化水平遵循典型的植物模式,在CG环境中最高(89.8 %),其次是CHG(62.8 %)和CHH(10.1 %)。这个详细的甲基组为未来的研究——例如外泛基因组的生成——提供了坚实的基础,并支持育种在作物改良中的潜在应用。
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引用次数: 0
Systematic Review of Plant AQPs: Molecular mechanisms, intracellular trafficking, and emerging roles in stress adaptation 植物AQPs的系统综述:分子机制、细胞内转运及其在逆境适应中的新作用
IF 4.5 Q1 PLANT SCIENCES Pub Date : 2026-01-01 DOI: 10.1016/j.cpb.2026.100586
Diego Fernando Nieto-Giraldo , Javier Torres-Osorio , José Mauricio Rodas Rodríguez
Aquaporins (AQPs) are integral membrane proteins that play essential roles in maintaining water and solute homeostasis across all domains of life. In plants, more than 30 AQP isoforms are commonly expressed, each displaying distinct spatial and temporal patterns depending on cell type, membrane localization, and developmental stage. This systematic review traces the historical development of plant AQP research, with particular emphasis on the mechanisms regulating their activity, including structural and conformational modifications as well as transcriptomic regulation, which modulates AQP abundance and function in response to environmental and physiological cues. The review highlights the physiological roles of AQPs and their contribution to adaptation under diverse physiological stresses, drawing on evidence from 229 publications spanning 1992–2025. Following the PRISMA protocol and through bibliometric analysis, current knowledge is synthesized regarding cell-specific AQP functions, subfamily-specific modulation, and interactions with hormonal signaling pathways. Emerging evidence for AQPs as cation channels is also discussed, alongside the insights provided by transcriptomic studies into AQP regulation under stress conditions. By integrating historical context with an updated critical synthesis, this review underscores the complexity and versatility of plant AQPs and the multilayered regulatory networks that govern their activity, while identifying persistent knowledge gaps and avenues for future research.
水通道蛋白(AQPs)是一种完整的膜蛋白,在维持生命所有领域的水和溶质稳态中起着至关重要的作用。在植物中,有超过30种AQP同种异构体共同表达,每种异构体根据细胞类型、膜定位和发育阶段表现出不同的时空模式。本文系统回顾了植物AQP研究的历史发展,特别强调了其活性的调节机制,包括结构和构象修饰以及转录组调控,这些机制根据环境和生理线索调节AQP的丰度和功能。该综述强调了aqp的生理作用及其在不同生理应激下的适应作用,并借鉴了1992-2025年间229篇出版物的证据。根据PRISMA协议和文献计量学分析,目前关于细胞特异性AQP功能、亚家族特异性调节以及与激素信号通路相互作用的知识得到了综合。本文还讨论了AQP作为阳离子通道的新证据,以及转录组学研究对应激条件下AQP调控的见解。通过将历史背景与最新的关键合成相结合,本综述强调了植物AQPs的复杂性和多功能性以及控制其活动的多层调控网络,同时确定了持续存在的知识差距和未来研究的途径。
{"title":"Systematic Review of Plant AQPs: Molecular mechanisms, intracellular trafficking, and emerging roles in stress adaptation","authors":"Diego Fernando Nieto-Giraldo ,&nbsp;Javier Torres-Osorio ,&nbsp;José Mauricio Rodas Rodríguez","doi":"10.1016/j.cpb.2026.100586","DOIUrl":"10.1016/j.cpb.2026.100586","url":null,"abstract":"<div><div>Aquaporins (AQPs) are integral membrane proteins that play essential roles in maintaining water and solute homeostasis across all domains of life. In plants, more than 30 AQP isoforms are commonly expressed, each displaying distinct spatial and temporal patterns depending on cell type, membrane localization, and developmental stage. This systematic review traces the historical development of plant AQP research, with particular emphasis on the mechanisms regulating their activity, including structural and conformational modifications as well as transcriptomic regulation, which modulates AQP abundance and function in response to environmental and physiological cues. The review highlights the physiological roles of AQPs and their contribution to adaptation under diverse physiological stresses, drawing on evidence from 229 publications spanning 1992–2025. Following the PRISMA protocol and through bibliometric analysis, current knowledge is synthesized regarding cell-specific AQP functions, subfamily-specific modulation, and interactions with hormonal signaling pathways. Emerging evidence for AQPs as cation channels is also discussed, alongside the insights provided by transcriptomic studies into AQP regulation under stress conditions. By integrating historical context with an updated critical synthesis, this review underscores the complexity and versatility of plant AQPs and the multilayered regulatory networks that govern their activity, while identifying persistent knowledge gaps and avenues for future research.</div></div>","PeriodicalId":38090,"journal":{"name":"Current Plant Biology","volume":"45 ","pages":"Article 100586"},"PeriodicalIF":4.5,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Exogenous priming and manipulation of metabolic/regulatory genes for crop stress tolerance
IF 4.5 Q1 PLANT SCIENCES Pub Date : 2026-01-01 DOI: 10.1016/j.cpb.2025.100572
Sunil Kumar Sahu , Manish Kumar Patel, Avinash Mishra
Environmental stresses pose unprecedented threats to global food security, imperiling crop yields across diverse agroecological zones and demanding innovative intervention strategies. The articles compiled in this special issue of Current Plant Biology collectively demonstrate that exogenous priming and genetic manipulation of metabolic/regulatory genes represent powerful, complementary approaches for enhancing crop resilience to abiotic and biotic stresses. Through the integration of chemical elicitors, microbial priming agents, and targeted genetic modifications, the contributions herein illuminate molecular pathways underlying stress adaptation and provide practical frameworks for advancing climate-resilient agriculture.
环境压力对全球粮食安全构成前所未有的威胁,危及不同农业生态区的作物产量,需要创新的干预策略。本期《当代植物生物学》特刊上的文章共同表明,外源启动和代谢/调节基因的遗传操纵是增强作物对非生物和生物胁迫的抗逆性的强有力的互补方法。通过化学激发子、微生物启动剂和靶向遗传修饰的整合,本文的贡献阐明了胁迫适应的分子途径,并为推进气候适应型农业提供了实用框架。
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引用次数: 0
Dissecting specialized metabolism in space: A MALDI-MSI atlas of Amaryllidaceae alkaloids in Hippeastrum papilio (Ravenna) Van Scheepen 解剖空间上的特殊代谢:马菊科生物碱的MALDI-MSI图谱
IF 4.5 Q1 PLANT SCIENCES Pub Date : 2026-01-01 DOI: 10.1016/j.cpb.2026.100579
Nuwan Sameera Liyanage , Natacha Mérindol , Sajjad Sobhanverdi , Kenneth Munk Pedersen , Christian Janfelt , Isabel Desgagné-Penix
Amaryllidoideae produce specific specialized metabolites called Amaryllidaceae alkaloids (AAs), known for their pharmacological potential. The spatial distribution and biosynthesis within plant tissues, however, remain poorly understood. This study investigates organ- and tissue-specific localization in Hippeastrum papilio, from precursors to galanthamine and haemanthamine, using matrix-assisted-laser-desorption/ionization mass-spectrometry-imaging (MALDI-MIS). AAs consistently accumulated in epidermal and vascular tissues; leaves showed uniform distribution across ages and positions, bulbs had higher concentrations in outer-scales and basal-plates, while roots displayed compartmentalized patterns, with galanthamine uniquely abundant in vascular bundles. Haemanthamine and galanthamine were detected in leaf and bulb mucilage, while precursors were scarce. Multivariate analyses revealed that precursors clustered separately from end-products, enriched in middle-scales and apical leaves of bulbs. Nonetheless, biosynthetic intermediates occurred in all tissues, indicating widespread AA biosynthesis. Transcript profiling confirmed differential expression of biosynthetic genes across leaves, bulbs, and roots, consistent with the widespread and multi-organ biosynthesis of AAs revealed by MSI. These findings suggest a coordinated metabolic network in H. papilio, challenging existing hypotheses on organ-specific AA biosynthesis and hinting at the transport of end products. This study refines current models of alkaloid biosynthesis and underscores the value of H. papilio as a promising resource for sustainable production of therapeutic AAs.
Amaryllidoideae产生特殊的代谢物称为amarylliidaceae生物碱(AAs),以其药理潜力而闻名。然而,植物组织内的空间分布和生物合成仍然知之甚少。本研究利用基质辅助激光解吸/电离质谱成像(MALDI-MIS)技术,研究了papilio海马(Hippeastrum papilio)从前体到加兰他明和海曼他明的器官和组织特异性定位。原子吸收蛋白持续在表皮和维管组织中积累;叶片在年龄和位置上分布均匀,鳞茎外鳞片和基板中浓度较高,根呈区隔分布,加兰他敏在维管束中含量丰富。在叶片和球茎粘液中检测到海曼他明和加兰他明,而前体缺乏。多变量分析表明,前体与最终产物分开聚集,富集于鳞茎的中鳞片和顶端叶片。尽管如此,生物合成中间体出现在所有组织中,表明AA生物合成广泛存在。转录谱分析证实了生物合成基因在叶片、球茎和根中的差异表达,这与MSI揭示的AAs广泛且多器官的生物合成一致。这些发现表明,在H. papilio中存在一个协调的代谢网络,挑战了关于器官特异性AA生物合成的现有假设,并暗示了最终产物的运输。该研究完善了生物碱生物合成的现有模型,并强调了凤蝶花作为可持续生产治疗性AAs的有前途的资源的价值。
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引用次数: 0
Integrated transcriptomic and metabolomic analysis of 1-MCP-induced disease resistance in Korla fragrant pear 1- mcp诱导库尔勒香梨抗病的综合转录组学和代谢组学分析
IF 4.5 Q1 PLANT SCIENCES Pub Date : 2026-01-01 DOI: 10.1016/j.cpb.2025.100576
Qi Zhang, Shuai Huang, Shifeng Cao, Xuewen Li, Xuemei Zhang, Yating Zhao, Yaxin Lei, Jing Wang
The effects of 1-methylcyclopropene (1-MCP) on Aspergillus niger (A. niger)-infested Korla fragrant pears using transcriptomics and metabolomics were investigated. Differentially expressed genes were highly enriched in metabolic pathways associated with disease resistance, such as phenylpropanoid biosynthesis, fatty acid synthesis pathway, etc., under control and 1-MCP treatment conditions. Metabolomic analyses revealed differentially accumulated metabolites associated with 120 d and 210 d; phenylacetylglutamine, stearic acid, and so on were found to be accumulated at higher levels at these time points. Further analysis showed that 1-MCP treatment was associated with increased activities of phenylalanine ammonia-lyase, peroxidase, 4-coumarate-CoA ligase, and fatty acid desaturase, as well as the content of lignin, flavonoids, and total phenolics, and was associated with up-regulated expression of the encoded genes. In addition, 1-MCP treatment was associated with decreased relative membrane permeability and malondialdehyde content, and was associated with changes in IUFA and U/S of the pericarp cell membrane. In conclusion, 1-MCP treatment is associated with enhanced disease resistance of pear against A. niger infestation, and this association is linked to changes in membrane lipid metabolism and phenylpropane metabolism.
采用转录组学和代谢组学方法研究了1-甲基环丙烯(1-MCP)对黑曲霉侵染的库尔勒香梨的抑菌效果。在对照和1-MCP处理条件下,与抗病相关的代谢途径如苯丙类生物合成途径、脂肪酸合成途径等差异表达基因高度富集。代谢组学分析显示,与120 d和210 d相关的代谢物积累存在差异;发现苯乙酰谷氨酰胺、硬脂酸等在这些时间点的积累水平较高。进一步分析表明,1-MCP处理增加了苯丙氨酸解氨酶、过氧化物酶、4-香豆酸-辅酶a连接酶和脂肪酸去饱和酶的活性,以及木质素、类黄酮和总酚类物质的含量,并上调了编码基因的表达。此外,1-MCP处理与相对膜透性和丙二醛含量降低有关,并与果皮细胞膜IUFA和U/S的变化有关。综上所述,1-MCP处理与梨抗黑曲霉侵染能力增强有关,这种关联与膜脂代谢和苯丙烷代谢的变化有关。
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引用次数: 0
Multi-sensor information fusion to characterise 3D spatial distribution of water stress in strawberries 多传感器信息融合表征草莓水分胁迫的三维空间分布
IF 4.5 Q1 PLANT SCIENCES Pub Date : 2026-01-01 DOI: 10.1016/j.cpb.2026.100581
Xing Xinyu , Li Yinglun , Gou Wenbo , Yang Si , Wen Weiliang , Zuo Qiang , Tan Xi , Zhao Jinling , Guo Xinyu
Moisture plays a critical role in crop growth and development, making accurate, efficient, and non-destructive detection and monitoring of crop water stress essential for advancing crop science research and optimizing production management. Traditional non-destructive methods for monitoring water stress primarily rely on color imaging or partial 2D spectral analysis. However, these methods are limited to two-dimensional features and fail to capture the spatial variability of water stress within the three-dimensional canopy structure of crops. To address this limitation, this study integrates RGB-D cameras and thermal infrared cameras and introduces a method for calculating the 3D spatial distribution characteristics of crop water stress using RGB-D-T fusion analysis. This approach enables high-precision detection and analysis of water stress in strawberry plants. An RGB-D-T acquisition system was designed and implemented to collect RGB images, depth images, and thermal infrared images of strawberries subjected to different moisture gradient treatments. Using the YOLOv8-seg deep learning model, semantic segmentation of the crop canopy and the wet reference surface was performed. The segmentation results were fused with 3D point cloud data to generate a 3D dataset incorporating temperature, color, and semantic information. Subsequently, the three-dimensional distribution characteristics and dynamic changes in the canopy water stress index (CWSI) of strawberry plants were analyzed under varying moisture conditions. The results demonstrated that under low moisture gradients (15 %–30 %), the CWSI value increased significantly and exhibited a concentrated distribution, indicating severe water stress. Conversely, under high moisture gradients (75 %–90 %), the CWSI value approached zero, reflecting sufficient water supply and complete stress alleviation. Additionally, the study highlighted the variation in the temperature difference between strawberry leaves and the surrounding air, confirming the sensitivity of strawberries to water stress across different reproductive stages. The response to water deficit was most pronounced during the growth phase. By fusing multi-source data, this study achieves 3D visualization and precise quantification of water stress in strawberries, providing innovative insights and technical support for precision irrigation and crop phenotyping research.
水分在作物生长发育中起着至关重要的作用,准确、高效、无损地检测和监测作物水分胁迫对推进作物科学研究和优化生产管理至关重要。传统的非破坏性水应力监测方法主要依靠彩色成像或部分二维光谱分析。然而,这些方法仅限于二维特征,无法捕捉作物三维冠层结构中水分胁迫的空间变异性。为了解决这一限制,本研究将RGB-D相机与热红外相机集成,并引入了一种利用RGB-D- t融合分析计算作物水分胁迫三维空间分布特征的方法。该方法可实现草莓植株水分胁迫的高精度检测和分析。设计并实现了一套RGB- d - t采集系统,用于采集不同水分梯度处理下草莓的RGB图像、深度图像和热红外图像。利用YOLOv8-seg深度学习模型,对作物冠层和湿润参考面进行语义分割。将分割结果与三维点云数据融合,生成包含温度、颜色和语义信息的三维数据集。随后,分析了不同水分条件下草莓植株冠层水分胁迫指数(CWSI)的三维分布特征和动态变化。结果表明:低水分梯度(15 % ~ 30 %)下,CWSI值显著增大,且分布集中,水分胁迫严重;相反,在高水分梯度条件下(75 % ~ 90 %),CWSI值趋近于零,表明供水充足,应力完全缓解。此外,该研究强调了草莓叶片和周围空气之间温差的变化,证实了草莓在不同繁殖阶段对水分胁迫的敏感性。对水分亏缺的反应在生长阶段最为明显。本研究通过融合多源数据,实现草莓水分胁迫的三维可视化和精确量化,为精准灌溉和作物表型研究提供创新见解和技术支持。
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引用次数: 0
Rhizosphere engineering for improved plant–beneficial microbe interactions: Concepts and some remaining questions 改善植物与有益微生物相互作用的根际工程:概念和一些遗留问题
IF 4.5 Q1 PLANT SCIENCES Pub Date : 2025-12-04 DOI: 10.1016/j.cpb.2025.100575
Israel D.K. Agorsor
The rhizosphere, often defined as the narrow layer of soil around plant roots, is a hotbed of microbial activity and is enriched with plant-derived metabolites that shape the root-associated microbiome. Several species of free-living rhizosphere microbes (known as rhizobacteria) have been identified in laboratory and small-scale experiments that enhance plant growth and adaptation to challenging environments. However, efforts to utilize these beneficial microbes on large scales have not always produced the anticipated results. A key bottleneck is the low rhizosphere competence of many of these rhizobacteria, described as their inability to effectively outcompete other soil-resident microbes and to colonize and thrive in the rhizosphere. Yet, root exudates contain metabolites that select for beneficial microbes, suggesting that the rhizosphere could be engineered to enable beneficial microbes applied in the field overcome their low rhizosphere competence and ultimately improve plant performance. This Review summarizes our current knowledge of how root exudates modulate root–microbe associations and discusses some outstanding questions, namely: (i) whether root exudation profiles could be rationally engineered to enhance the accumulation of specific metabolites in the rhizosphere to promote plant–beneficial microbe interactions, and the challenges that may come with this endeavour, and (ii) whether root exudation can be temporally engineered to benefit the plant at different developmental stages. Opportunities for rhizosphere engineering based on the dynamic nature of root exudate compositions are briefly discussed. Thus, this Review largely focuses on the significant promise of rhizosphere engineering to promote effective plant–beneficial microbe associations for improved plant performance and yield, while highlighting some potential pitfalls.
根际通常被定义为植物根系周围的狭窄土壤层,是微生物活动的温床,富含植物来源的代谢物,这些代谢物形成了与根相关的微生物群。在实验室和小规模实验中已经发现了几种自由生活的根际微生物(称为根细菌),它们可以促进植物生长和适应具有挑战性的环境。然而,大规模利用这些有益微生物的努力并不总是产生预期的结果。一个关键的瓶颈是许多根际细菌的根际能力较低,这被描述为它们无法有效地与其他土壤微生物竞争,无法在根际定植和繁殖。然而,根分泌物中含有代谢物,这些代谢物会选择有益微生物,这表明可以对根际进行改造,使田间应用的有益微生物克服其根际能力低下的问题,最终提高植物的性能。这篇综述总结了我们目前对根分泌物如何调节根-微生物关联的了解,并讨论了一些悬而未决的问题,即:(i)是否可以合理地设计根系分泌物剖面以增强根际特定代谢物的积累,从而促进植物与有益微生物的相互作用,以及这一努力可能带来的挑战;(ii)是否可以暂时设计根系分泌物以使植物在不同的发育阶段受益。简要讨论了基于根分泌物组成的动态特性的根际工程的机会。因此,本综述主要关注根际工程在促进植物与有益微生物有效关联以提高植物性能和产量方面的重大前景,同时强调了一些潜在的缺陷。
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Current Plant Biology
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