Journal of plant physiology最新文献_第7页

Cytokinin-induced phenotypic and endogenous phytohormonal dynamics during potato (Solanum tuberosum L.) tuber development in vitro 马铃薯（Solanum tuberosum L.）块茎体外发育过程中细胞分裂素诱导的表型和内源植物激素动态。

IF 4.1 3区生物学 Q1 PLANT SCIENCES

Journal of plant physiology

Pub Date : 2025-10-09 DOI: 10.1016/j.jplph.2025.154632

Lixiang Cheng, Jianlong Yuan, Lulu Xia, Zhensan Tang, Feng Zhang

Cytokinins (CKs) exist in various forms within potato plants, among which the active CKs account for only a minute fraction but play crucial roles in tuber development. In the present study, in vitro potato stolons were exposed to graded concentrations of active CK N⁶-(Δ²-isopentenyl)-adenine (2ip) and CK-biosynthesis inhibitor lovastatin, and the phenotypic and endogenous phytohormone dynamics during tuber development were investigated. The results showed that low 2ip concentrations promoted tuberization, with 0.1 μM 2ip exhibiting the strongest inductive effect. The initial time of tuberization was advanced, and the tuberization rate, tuber fresh weight, and tuber diameter significantly increased. With increasing 2ip concentrations, higher levels (>50 μM) inhibited tuberization and markedly elevated the length-to-width ratio of tubers. Inhibiting CK biosynthesis by lovastatin also inhibited tuberization, and even induced the formation of abnormal tubers. Treatment with 0.1 μM 2ip shifted the endogenous hormone balance toward a state that favors tuber formation and development. Levels of active CKs (iP, tZ, and DHZ), IAA, and SA significantly increased, whereas the contents of total jasmonates (JA, JA-Ile, and cis-OPDA), ABA, and inactive CKs (iPR and cZR) decreased. The ratios of active CKs to GA₃, ABA, or JA, as well as the IAA/ABA and IAA/GA₃ ratios, significantly increased. Inhibition of CK biosynthesis elicited changes in CKs, JAs, and ABA levels, as well as in the associated phytohormone ratios, that were opposite to those observed with 0.1 μM 2ip treatment. Thus this study revealed the specific physiological roles of active CKs in tuber development and provided insights into the mechanisms of tuber development regulated by CKs.

细胞分裂素（Cytokinins, ck）在马铃薯植株中以多种形式存在，其中活性细胞分裂素仅占很小的比例，但在马铃薯块茎发育中起着至关重要的作用。在本研究中，马铃薯匍匐茎暴露于不同浓度的活性CK N6-（Δ2-isopentenyl）-腺嘌呤（2ip）和CK生物合成抑制剂洛伐他汀，研究了块茎发育过程中的表型和内源植物激素动态。结果表明，低浓度的2ip促进了结核的形成，其中0.1 μM 2ip诱导效果最强。结瘤起始时间提前，结瘤率、块茎鲜重、块茎直径显著增加。随着2ip浓度的增加，较高浓度（bbb50 μM）抑制了块茎的形成，并显著提高了块茎的长宽比。洛伐他汀抑制CK生物合成也抑制了块茎的形成，甚至诱导了异常块茎的形成。0.1 μM 2ip处理将内源激素平衡转向有利于块茎形成和发育的状态。活性ck （iP、tZ和DHZ）、IAA和SA含量显著升高，总茉莉酸（JA、JA- ile和顺式opda）、ABA和非活性ck （iPR和cZR）含量显著降低。活性ck与GA3、ABA和JA的比值以及IAA/ABA和IAA/GA3的比值均显著升高。抑制CK生物合成引起了CK、JAs和ABA水平的变化，以及相关的植物激素比率的变化，与0.1 μM 2ip处理相反。因此，本研究揭示了活性ck在块茎发育中的具体生理作用，为探讨ck调控块茎发育的机制提供了新的思路。

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引用次数: 0

Long non-coding RNA profiling reveals lncRNA MslncLOX13S that promotes lipoxygenase gene expression and enhances the tolerance to selenium in Medicago sativa L. 长链非编码RNA分析揭示了促进苜蓿脂氧合酶基因表达和提高对硒耐受性的lncRNA MslncLOX13S。

IF 4.1 3区生物学 Q1 PLANT SCIENCES

Journal of plant physiology

Pub Date : 2025-10-09 DOI: 10.1016/j.jplph.2025.154629

Qingdong Wang , Mengli Xu , Meiling Xiang , Yarui Sheng , Huafeng Hu , Tianyu Zhang

Alfalfa (Medicago sativa L.) is one of the most widely cultivated forage crops globally. Selenium (Se) is considered beneficial for plants, showing a concentration-dependent dual effect that can promote and inhibit various plant species, including alfalfa. Long non-coding RNAs (lncRNAs), a class of non-protein-coding transcripts, are involved in multiple biological processes in plants. To explore the potential role of lncRNAs in Se accumulation and tolerance in alfalfa, physiological responses were measured, and lncRNA expression was examined in alfalfa leaves exposed to Se concentrations of 0 mg L⁻¹, 100 mg L⁻¹, and 500 mg L⁻¹. Under selenium treatment, lipoxygenase (LOX) activity and antioxidant levels increased significantly. A total of 64,684 novel lncRNAs were identified, with 1414 and 1810 differentially expressed lncRNAs (DELs) found in the 100 mg L⁻¹ and 500 mg L⁻¹ Se-treated groups, respectively. Functional enrichment analysis suggested that LOX-targeted lncRNAs could play a pivotal role in Se accumulation and tolerance. Silencing of MslncLOX13S resulted in a yellowing of the leaf edges and lowered levels of LOX, jasmonic acid (JA), antioxidant capacity, and Se content. In comparison, transient overexpression of MslncLOX13S showed the opposite effects. These findings may contribute to the development of alfalfa cultivars enriched in Se, suitable for use as feed or raw material for organic Se extraction. Moreover, this study improves the understanding of lncRNA-mediated gene expression in alfalfa, highlighting MslncLOX13S as a Se-responsive lncRNA that enhances tolerance against Se, potentially offering a strategy for improving Se biofortification in forage crops.

苜蓿（Medicago sativa L.）是全球种植最广泛的饲料作物之一。硒（Se）被认为对植物有益，表现出浓度依赖的双重效应，可以促进和抑制多种植物物种，包括苜蓿。长链非编码rna （Long non-coding rna, lncRNAs）是一类非蛋白质编码转录物，参与植物的多种生物过程。为了探索lncRNA在苜蓿硒积累和耐受中的潜在作用，我们测量了生理反应，并在暴露于硒浓度为0 mg L-1、100 mg L-1和500 mg L-1的苜蓿叶片中检测了lncRNA的表达。硒处理显著提高了脂氧合酶（LOX）活性和抗氧化水平。共鉴定出64,684个新的lncrna，其中在100 mg L-1和500 mg L-1硒处理组中分别发现了1414个和1810个差异表达lncrna （DELs）。功能富集分析表明，lox靶向lncRNAs可能在硒积累和耐受中起关键作用。MslncLOX13S基因的沉默导致叶片边缘变黄，降低了氧氧化物、茉莉酸（JA）、抗氧化能力和硒含量。相比之下，MslncLOX13S的瞬时过表达则表现出相反的效果。这些研究结果将有助于培育适合作为饲料或有机硒提取原料的富硒苜蓿品种。此外，本研究提高了对lncRNA介导的苜蓿基因表达的理解，强调了MslncLOX13S是一种硒敏感的lncRNA，可以增强对硒的耐受性，可能为改善饲料作物的硒生物强化提供策略。

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引用次数: 0

Integrated transcriptome and metabolome analysis reveal a reprogramming of phenylpropanoid pathway and antioxidant activity in Cymbidium ensifolium resistance to anthracnose 综合转录组和代谢组分析揭示了大花蕙兰（Cymbidium ensifolium）对炭疽病的抗性中苯丙素途径的重编程和抗氧化活性。

IF 4.1 3区生物学 Q1 PLANT SCIENCES

Journal of plant physiology

Pub Date : 2025-10-07 DOI: 10.1016/j.jplph.2025.154631

Peng Li , Linying Lan , Longwei Xiong , Yang Tian , Gangmu Wu , Donghui Peng , Siren Lan , Zhongjian Liu , Qinghua Zhang , Ye Ai

Anthracnose, caused by Colletotrichum gloeosporioides (Cog), severely constrains the Cymbidium ensifolium industry. To investigate the molecular underpinnings of resistance and the host-pathogen interaction strategies between C. ensifolium and Cog, we employed transcriptomics and metabolomics to compare the post-infection responses of the Cog-resistant (RV) and Cog-susceptible (SV) C. ensifolium varieties. Our integrated analysis reveals that resistance to Cog in C. ensifolium is partially mediated by the targeted accumulation of phenylpropane pathway metabolites, especially those involved in flavone and flavonol biosynthesis. Metabolites including rutin, lonicerin, nicotiflorin, apiin, and coniferin exhibited highly significant accumulation in the RV. The massive accumulation of various flavonoids in the SV was consistent with the gene expression trends in the phenylpropanoid pathway, a pattern indicative of an antioxidant stress response driven by stress reprogramming. A similar phenomenon was also observed in the core reactive oxygen species (ROS) scavenging pathway, glutathione metabolism. This ultimately results in two distinct outcomes: a potent, antifungal defense reprogramming in the RV versus an antioxidant-focused stress reprogramming in the SV. The observed trade-offs between antifungal and antioxidant activities in these varieties provide novel insights into the multilevel regulatory networks governing plant-pathogen interactions. Our study illuminates this sophisticated defense strategy of C. ensifolium against Cog, identifying core metabolites and pathways that now serve as a guide for targeted resistance breeding programs.

炭疽病是由炭疽菌（Colletotrichum gloeosporioides, Cog）引起的，严重制约了蕙兰（cybidium ensifolium）产业的发展。为了研究荚膜荚膜抗性的分子基础和宿主-病原体相互作用策略，我们采用转录组学和代谢组学方法比较了荚膜荚膜抗性（RV）和荚膜荚膜敏感（SV）荚膜荚膜品种的感染后反应。我们的综合分析表明，对Cog的抗性部分是由苯丙烷途径代谢物的靶向积累介导的，特别是与黄酮和黄酮醇生物合成有关的代谢物。代谢产物包括芦丁、忍冬苷、烟碱苷、apiin和针叶树苷在RV中表现出高度显著的积累。SV中各种黄酮类化合物的大量积累与苯丙素途径的基因表达趋势一致，表明应激重编程驱动的抗氧化应激反应模式。在核心活性氧（ROS）清除途径谷胱甘肽代谢中也观察到类似的现象。这最终导致两种不同的结果：RV中有效的抗真菌防御重编程与SV中以抗氧化剂为重点的应激重编程。在这些品种中观察到的抗真菌和抗氧化活性之间的权衡为植物-病原体相互作用的多层调控网络提供了新的见解。我们的研究阐明了C. ensifolium对Cog的这种复杂防御策略，确定了核心代谢物和途径，现在可以作为靶向抗性育种计划的指南。

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引用次数: 0

Grapevine adopts different strategies in response to drying regimes. Procrastinator or escaper? 葡萄藤采用不同的策略来应对干燥制度。拖延者还是逃避者？

IF 4.1 3区生物学 Q1 PLANT SCIENCES

Journal of plant physiology

Pub Date : 2025-10-02 DOI: 10.1016/j.jplph.2025.154622

C. Morabito , J. Orozco , A. Asteggiano , C. Medana , A. Schubert , M.A. Zwieniecki , F. Secchi

Grapevines (Vitis vinifera) experience diverse drought conditions that can differ in severity, duration, and progression. In this study, we investigated the physiological, biochemical, and hormonal responses of the Barbera grapevine, a near-anisohydric cultivar, to two contrasting drought imposition regimes: a gradual stress mimicking field conditions (progressive drought, PD) and an abrupt stress simulating pot experiments (rapid drought, RD). We analyzed stomatal conductance (gs), stem water potential (Ψ), xylem sap pH, abscisic acid (ABA) levels, and non-structural carbohydrate (NSC) accumulation in xylem sap and leaves during stress and recovery.

RD induced a rapid drop in Ψ and gs, accompanied by significant xylem sap alkalinization and a sharp rise in ABA concentration, which promoted early stomatal closure and rapid starch remobilization. In contrast, PD resulted in delayed stomatal closure, minimal ABA accumulation under moderate stress, and progressive xylem sap acidification, which facilitated osmotic adjustments via sustained accumulation of soluble sugars and ions.

Our findings suggest that Barbera vines shift between isohydric and anisohydric behaviors depends on drought imposition dynamics. This physiological plasticity reflects a context-dependent deployment of stress avoidance or tolerance mechanisms. These insights emphasize the importance of stress imposition protocols in drought physiology studies and inform irrigation management and breeding programs for drought-resilient cultivars.

葡萄藤（Vitis vinifera）经历了不同的干旱条件，其严重程度、持续时间和进展程度各不相同。在这项研究中，我们研究了巴贝拉葡萄（Barbera grapevine）这一近各向异性栽培品种对两种不同的干旱施加机制的生理、生化和激素反应：模拟田间条件的渐进胁迫（渐进干旱，PD）和模拟盆栽条件的突然胁迫（快速干旱，RD）。我们分析了胁迫和恢复过程中木质部液和叶片的气孔导度（gs）、茎水势（Ψ）、木质部液pH、脱落酸（ABA）水平和非结构性碳水化合物（NSC）积累。RD诱导Ψ和gs迅速下降，木质部汁液碱化显著，ABA浓度急剧升高，促进了气孔的早期关闭和淀粉的快速再动员。相反，PD导致气孔关闭延迟，适度胁迫下ABA积累最少，木质部汁液酸化渐进式，通过持续积累可溶性糖和离子促进渗透调节。我们的研究结果表明，巴贝拉葡萄树在等水和各向异性行为之间的转变取决于干旱强加动力学。这种生理可塑性反映了应激避免或耐受机制的情境依赖性部署。这些见解强调了胁迫施加协议在干旱生理学研究中的重要性，并为抗旱品种的灌溉管理和育种计划提供了信息。

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引用次数: 0

Current understanding of HAK potassium transporters in plant development and stress tolerance HAK钾转运体在植物发育和抗逆性中的研究进展。

IF 4.1 3区生物学 Q1 PLANT SCIENCES

Journal of plant physiology

Pub Date : 2025-10-01 DOI: 10.1016/j.jplph.2025.154617

Yuxin Cui , Xiaoqian Zhang , Meixiang Yang , Xin Wei , Jianrong Guo

Potassium (K⁺) is a critical nutrient for plant growth and development. The K⁺ uptake/high-affinity K⁺ transporter/K⁺ transporter (KUP/HAK/KT) family comprises high-affinity K⁺ transport proteins in plants, with vital roles in K⁺ uptake and transport, especially under K⁺-deficient conditions. In this review, we summarize the functions of HAK transporter proteins in mediating K⁺ uptake and plant growth and development. We also discuss their roles in enhancing plant tolerance to salt, drought, K⁺ deficiency, and virus stresses, as well as their regulation. We propose that the functions of HAKs in regulating photosynthesis and growth, as well as the mechanisms by which HAKs interact with related genes and proteins to carry out their functions, warrant future investigation. The studies discussed here are important for improving the efficiency of K⁺ fertilization, enhancing crop yield and quality, and promoting sustainable agriculture.

钾（K+）是植物生长发育的重要营养物质。KUP/HAK/KT家族是植物中钾离子吸收/高亲和转运蛋白家族，在钾离子吸收和转运中起重要作用，特别是在缺钾条件下。本文就HAK转运蛋白在介导植物K+吸收和生长发育中的作用作一综述。我们还讨论了它们在提高植物对盐、干旱、缺钾和病毒胁迫的耐受性中的作用，以及它们的调控。我们认为，HAKs在调节光合作用和生长中的作用，以及HAKs与相关基因和蛋白质相互作用的机制，值得进一步研究。研究结果对提高钾肥施用效率，提高作物产量和品质，促进农业可持续发展具有重要意义。

引用次数: 0

Carbon dots promote tomato growth and yield via photosynthesis enhancement and leaf senescence delay 碳点通过促进光合作用和延缓叶片衰老来促进番茄生长和产量。

IF 4.1 3区生物学 Q1 PLANT SCIENCES

Journal of plant physiology

Pub Date : 2025-10-01 DOI: 10.1016/j.jplph.2025.154616

Shuang Li , Wenbo Zhao , Wei Zhao , Zhen Jiao , Keqiao Cui , Rong Wang , Aiying Wang , Yuantao Tan , Huandong Li , Yue Yin , Feijuan Gao , Kaikai Liu , Yaoke Duan , Xiaoping Kong , Ruonan Ma , Hao Sun

Food security is increasingly threatened by population growth, regional conflicts, and climate disasters, making it imperative to further increase crop production. One safe approach to achieving this goal is to expand the utilization of agricultural inputs. Recent research has revealed that carbon dots (CDs), a class of carbon-based nanomaterials, have potential in interacting with plants to enhance growth. However, the underlying molecular mechanisms remain poorly understood. In this study, we synthesized CDs that emit red light at a wavelength of 670 nm when excited by green light at 560 nm. When tomato seedlings were treated with these CDs via foliar spraying, their plant height increased by 10.26 % and fresh weight by 19.81 %. Measurements of photosynthesis and the Hill reaction showed significant improvements in both photosynthetic efficiency and chloroplast electron transport. Transcriptome analysis of tomato leaves revealed downregulation of genes associated with leaf senescence, including those involved in ethylene response, protein ubiquitination, chlorophyll degradation, ATP hydrolysis, and lignin synthesis. Transient expression assays of phyB1::GFP and phyB2::GFP demonstrated that CDs accelerate the translocation of red light-responsive phytochrome B (PhyB) from the cytoplasm to the nucleus, a process that may contribute to delayed leaf senescence. Additionally, during the harvesting period, CD-treated tomato plants showed evident enhancements in both fruit quantity and quality. These results collectively indicate that CDs promote tomato growth and fruit production by enhancing photosynthesis and delaying leaf senescence. This study not only provides insights for promoting tomato growth and yield but also offers valuable guidance for investigating interactions between nanomaterials and plants.

粮食安全日益受到人口增长、地区冲突和气候灾害的威胁，因此必须进一步提高作物产量。实现这一目标的一个安全办法是扩大农业投入的利用。最近的研究表明，碳点（CDs）是一类碳基纳米材料，具有与植物相互作用以促进生长的潜力。然而，潜在的分子机制仍然知之甚少。在这项研究中，我们合成了在560nm的绿光激发下发出波长为670 nm的红光的CDs。叶面喷施这些cd处理的番茄苗株高和鲜重分别提高了10.26%和19.81%。光合作用和希尔反应的测量结果表明，光合效率和叶绿体电子传递均有显著改善。番茄叶片转录组分析显示，与叶片衰老相关的基因下调，包括参与乙烯响应、蛋白质泛素化、叶绿素降解、ATP水解和木质素合成的基因。对phyB1::GFP和phyB2::GFP的瞬时表达分析表明，CDs加速了红光响应型光敏色素B （PhyB）从细胞质向细胞核的易位，这一过程可能有助于延缓叶片衰老。此外，在收获期，cd处理的番茄植株在果实数量和品质上都有明显的提高。综上所述，CDs通过促进光合作用和延缓叶片衰老来促进番茄生长和果实产量。该研究不仅为促进番茄生长和产量提供了新的思路，而且为研究纳米材料与植物之间的相互作用提供了有价值的指导。

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引用次数: 0

Identification and functional characterization of lycopene β-cyclase gene from Iris germanica and its relation to carotenoid accumulation 德国鸢尾番茄红素β-环化酶基因的鉴定、功能特征及其与类胡萝卜素积累的关系

IF 4.1 3区生物学 Q1 PLANT SCIENCES

Journal of plant physiology

Pub Date : 2025-10-01 DOI: 10.1016/j.jplph.2025.154620

Xiaojie Zhao , Fang Yu , Xue Li , Yumeng Wu , Tianrui Gong , Beibei Su , Xiaofei Zhang , Dazhuang Huang

Accumulations of pigments plays a pivotal role in determining floral coloration, which constitutes one of the most critical ornamental characteristics in flowering plants. In Iris germanica, carotenoids underlie yellow, orange and pink flowers, yet comprehensive metabolomic profiling and associated gene regulatory networks in carotenoid biosynthetic pathway remain to be elucidated. In this study, the carotenoids and transcriptome profiles of yellow, orange and pink flower cultivars were analyzed. In pink flower ‘Lenora Pearl’ and orange flower ‘Savannah Sunset’, lycopene and (E/Z)-phytoene were the major pigments. In yellow flower ‘Harvest of Memories’ and ‘Little Miss Magic’, antheraxanthin, β-cryptoxanthin and violaxanthin were the major pigments. The expression profiles of structural genes in the carotenoid pathway were analyzed among different flower-colored cultivars. Among the structural genes, IgLCYB2s expression positively correlation with β, β-carotene (β-carotene and its derivatives) biosynthesis while negatively correlating with lycopene accumulation across cultivars, these pattern also consistent with flower color phenotype among cultivars. Thus, IgLCYB2s could be the critical genes determine composition and content of carotenoids among different cultivars. Quantitative real-time PCR results revealed that IgLCYB2s were tissue-specific in flowers. Enzyme activity assays in Escherichia coli indicated IgLCYB2s converted lycopene into β-carotene in vivo, which confirmed the function of IgLCYB2 as structural gene in regulation the composition of carotenoids. In future, IgLCYB2s can be used in genetic manipulations to facilitate genetically modified breeding of flower color in I. germanica or iris genus.

色素的积累在决定花的颜色中起着关键作用，这是开花植物最重要的观赏特征之一。在德国鸢尾（Iris germanica）中，黄色、橙色和粉红色的花朵都含有类胡萝卜素，但类胡萝卜素生物合成途径的代谢组学分析和相关基因调控网络仍有待阐明。本研究分析了黄色、橙色和粉色花品种的类胡萝卜素和转录组谱。粉红色花“Lenora Pearl”和橙色花“Savannah Sunset”中，番茄红素和(E/Z)-植物烯是主要的色素。黄花“回忆的收获”和“魔法小小姐”中花青素、β-隐黄素和紫黄素是主要的色素。分析了不同花色品种类胡萝卜素通路结构基因的表达谱。在结构基因中，IgLCYB2s的表达与β、β-胡萝卜素（β-胡萝卜素及其衍生物）的生物合成呈正相关，与番茄红素的积累负相关，这种模式也与品种间的花色表型一致。因此，IgLCYB2s可能是决定不同品种类胡萝卜素组成和含量的关键基因。实时荧光定量PCR结果显示，IgLCYB2s在花中具有组织特异性。大肠杆菌酶活性测定表明，IgLCYB2s在体内可将番茄红素转化为β-胡萝卜素，证实了IgLCYB2作为结构基因调控类胡萝卜素组成的功能。未来，IgLCYB2s可用于基因操作，以促进德国鸢尾属花卉颜色的转基因育种。

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引用次数: 0

Structural variation in the promoter region of DcSOC1d influences flowering behavior in carrot DcSOC1d启动子区的结构变异影响胡萝卜的开花行为。

IF 4.1 3区生物学 Q1 PLANT SCIENCES

Journal of plant physiology

Pub Date : 2025-09-30 DOI: 10.1016/j.jplph.2025.154621

Kai Zhang , Rong-Hua Wu , Yu-Min Zhang, Ai-Sheng Xiong, Zhi-Sheng Xu

Early flowering can lead to premature lignification of carrot roots, resulting in significant loss of commercial value. However, the molecular mechanisms controlling this trait remain poorly understood. In this study, we identified two SOC1 genes, DcSOC1b and DcSOC1d, located near the Vrn1 locus—a quantitative trait locus associated with early flowering habit in carrot. Both genes showed expression patterns consistent with early flowering in wild carrot 'Songzi' (SZ). Variations in the promoter region of DcSOC1d were identified between SZ and other biennial carrots. When DcSOC1d from SZ carrots, driven by its native promoter, was introduced into biennial 'Qitouhuang' (QTH) carrots, it exhibited high expression and induced flowering without vernalization. In contrast, DcSOC1b from SZ carrots showed low expression under the same conditions and failed to induce early flowering in QTH carrots. Further investigation found that DcSOC1d can upregulate DcSOC1b expression. Our findings provide novel insights into early flowering mechanisms that could be applied to carrot improvement through gene editing, with potential implications for other vegetable and fruit crops.

过早开花会导致胡萝卜根部过早木质化，导致商业价值的重大损失。然而，控制这一特性的分子机制仍然知之甚少。在这项研究中，我们发现了两个SOC1基因，DcSOC1b和DcSOC1d，位于Vrn1位点附近，Vrn1位点是胡萝卜早期开花习惯相关的数量性状位点。这两个基因的表达模式与野生胡萝卜‘松子’（SZ）的早开花一致。在SZ和其他二年生胡萝卜之间发现了DcSOC1d启动子区域的差异。从SZ胡萝卜中提取的DcSOC1d在其原生启动子的驱动下，导入二年生‘七头黄’（QTH）胡萝卜中，表现出高表达并诱导开花而不春化。相比之下，来自SZ胡萝卜的DcSOC1b在相同条件下表达量较低，在QTH胡萝卜中未能诱导早花。进一步研究发现，DcSOC1d可以上调DcSOC1b的表达。我们的发现为早期开花机制提供了新的见解，可以通过基因编辑应用于胡萝卜的改良，对其他蔬菜和水果作物也有潜在的影响。

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引用次数: 0

Modern approaches to enhancing abiotic stress tolerance using phytoprotectants: A focus on encapsulated proline 利用植物保护剂增强非生物胁迫耐受性的现代方法：重点研究荚膜脯氨酸

IF 4.1 3区生物学 Q1 PLANT SCIENCES

Journal of plant physiology

Pub Date : 2025-09-25 DOI: 10.1016/j.jplph.2025.154602

Vanessa A. Avendaño , Jimmy Sampedro-Guerrero , Aurelio Gómez-Cadenas , Carolina Clausell-Terol

Abiotic stress conditions such as salinity, water deficit, heat, cold, and heavy metal toxicity severely affect plant growth and productivity. To cope with these adverse environmental conditions, the exogenous application of phytoprotectants has emerged as a promising strategy to enhance plant tolerance. Phytoprotectants such as proline, putrescine, ascorbic acid, and phytomelatonin improve physiological and biochemical responses by interacting with phytohormonal signaling pathways to strengthen stress adaptation mechanisms. Among them, proline is particularly notable for its multifunctional role as an osmolyte, antioxidant, signaling molecule, and stabilizer of cellular structures. Exogenous proline application under stress conditions has been shown to improve growth parameters, activate antioxidant defense systems, reduce oxidative stress, and upregulate stress-responsive genes. However, excessive accumulation of these compounds can produce metabolic imbalances, which highlights the need for precise management. Recent advances in encapsulation technologies provide a novel approach to improve the stability, bioavailability, and controlled release of phytoprotectants. This review offers a comprehensive overview of the roles and interactions of key phytoprotectants, with a special focus on proline, and explores how encapsulation strategies can enhance their effectiveness in mitigating abiotic stress in plants.

盐度、水分亏缺、高温、低温和重金属中毒等非生物胁迫条件严重影响植物的生长和生产力。为了应对这些不利的环境条件，外源应用植物保护剂已成为提高植物耐受性的一种有希望的策略。脯氨酸、腐胺、抗坏血酸和褪黑素等植物保护剂通过与植物激素信号通路相互作用来增强应激适应机制，从而改善生理和生化反应。其中脯氨酸尤其引人注目，它具有渗透性、抗氧化剂、信号分子和细胞结构稳定剂等多种功能。在胁迫条件下外源脯氨酸的应用已被证明可以改善生长参数，激活抗氧化防御系统，减少氧化应激，并上调应激反应基因。然而，这些化合物的过度积累会产生代谢失衡，这突出了精确管理的必要性。包封技术的最新进展为提高植物保护剂的稳定性、生物利用度和控释提供了新的途径。本文综述了主要植物保护剂的作用和相互作用，重点介绍了脯氨酸，并探讨了包封策略如何提高它们在减轻植物非生物胁迫中的有效性。

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引用次数: 0

Corrigendum to “Nitrogen source and availability associate to mitochondrial respiratory pathways and symbiotic function in lotus japonicus” [J. Plant Physiol. 2025 (314), November 2025, 154606] “氮源和可利用性与线粒体呼吸途径和共生功能的关系”[J]。植物物理学报，2025 (314),154606]

IF 4.1 3区生物学 Q1 PLANT SCIENCES

Journal of plant physiology

Pub Date : 2025-09-20 DOI: 10.1016/j.jplph.2025.154614

J. Ortiz , C. Sanhueza , A. Romero-Munar , S. Sierra , F. Palma , R. Aroca , T. Coba de la Peña , M. López-Gómez , L. Bascuñán-Godoy , N.F. Del-Saz

引用次数: 0