Agronomy-Basel最新文献

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Effects of Co-Existing Microplastics on Adsorption–Desorption Behavior of Perfluorooctanoic Acid in Soil: Co-Sorption and Mechanism Insight 共存微塑料对土壤中全氟辛酸吸附-解吸行为的影响:共吸附及机理研究
2区 农林科学
Agronomy-Basel Pub Date : 2025-12-05 DOI: 10.3390/agronomy15122802
Wei Zhao, Guilan Chen, Jing Jiao, Zhihai Liu, Yuanming Zhou, Guocheng Liu, Chengzhi Zhou, Qinghua Yan, Shuaishuai Xin, Yanjun Xin, Qianwen Wang
{"title":"Effects of Co-Existing Microplastics on Adsorption–Desorption Behavior of Perfluorooctanoic Acid in Soil: Co-Sorption and Mechanism Insight","authors":"Wei Zhao, Guilan Chen, Jing Jiao, Zhihai Liu, Yuanming Zhou, Guocheng Liu, Chengzhi Zhou, Qinghua Yan, Shuaishuai Xin, Yanjun Xin, Qianwen Wang","doi":"10.3390/agronomy15122802","DOIUrl":"https://doi.org/10.3390/agronomy15122802","url":null,"abstract":"Microplastics (MPs) and perfluorooctanoic acid (PFOA) are ubiquitously present in agroecosystems, which can cause varying degrees of environmental damage. This study reports the investigation of the effect of MPs on PFOA adsorption by soil. A comprehensive analysis was performed on the adsorption–desorption dynamics of PFOA by MPs and soil under different conditions. The surface morphology of MPs and their interaction with PFOA were characterized. Irregularly shaped MPs facilitated accurate simulation of real-world conditions, influencing the adsorption quantity of PFOA in soil. Additionally, the peak intensity of various preadsorption and post-adsorption MP functional groups was altered, indicating that MPs augmented PFOA adsorption. The kinetics of PFOA adsorption followed the quasi-second-order reaction, and the isotherm data aligned well with the Freundlich model. This study reveals the mechanism by which the co-sorption of PFOA and MPs in agroecosystems affects their respective environmental behaviors, providing basic research data for the control of pollutants in agroecosystem soil.","PeriodicalId":56066,"journal":{"name":"Agronomy-Basel","volume":"15 12","pages":"2802-2802"},"PeriodicalIF":0.0,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147334121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Agricultural Waste for Remediation of Neonicotinoid Pollution: Mechanisms and Environmental Effects of Multi-Site Adsorption of Dinotefuran on Rice Husk Biochar 农业废弃物对新烟碱污染的修复:稻壳生物炭对呋喃多位点吸附的机理及环境效应
2区 农林科学
Agronomy-Basel Pub Date : 2025-11-28 DOI: 10.3390/agronomy15122746
Longfei Liu, Xinyu Jiang, Tianyu Lu, Jinzhao Ma
{"title":"Agricultural Waste for Remediation of Neonicotinoid Pollution: Mechanisms and Environmental Effects of Multi-Site Adsorption of Dinotefuran on Rice Husk Biochar","authors":"Longfei Liu, Xinyu Jiang, Tianyu Lu, Jinzhao Ma","doi":"10.3390/agronomy15122746","DOIUrl":"https://doi.org/10.3390/agronomy15122746","url":null,"abstract":"The increasing contamination of neonicotinoid pesticides in the environment has become a growing concern, and biochar is considered a promising strategy for removing these pollutants. This study converted waste rice husks into biochar (RHB) via pyrolysis at 400–600 °C under anaerobic conditions, using dinotefuran (DIN) as a representative neonicotinoid. The physicochemical properties of RHB and its adsorption mechanisms for DIN were systematically investigated. Results showed that higher pyrolysis temperatures increased the specific surface area, microporosity, and aromaticity of biochar, while altering the distribution of surface functional groups. RHB prepared at 600 °C (RHB600) exhibited the highest adsorption capacity. The adsorption process followed the Sips isotherm and pseudo-second-order kinetic models, indicating a spontaneous and endothermic process involving heterogeneous physic–chemical adsorption. The primary mechanisms included pore filling, π–π interactions, and hydrogen bonding. The sequence of functional group response during DIN adsorption was C–O > C=C > C=O > –OH. Environmental factors such as solution pH and humic acid concentration significantly influenced adsorption, while phosphate ions caused strong competitive inhibition. An artificial neural network model accurately predicted adsorption under multiple interacting factors, and RHB600 demonstrated good regeneration after ethanol elution. This study confirms that RHB is an effective and practical adsorbent, providing a technical reference for agricultural waste valorization and pesticide-polluted water remediation.","PeriodicalId":56066,"journal":{"name":"Agronomy-Basel","volume":"15 12","pages":"2746-2746"},"PeriodicalIF":0.0,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Synthesis, Bioevaluation and Structure-Activity Relationships of Novel N-Aryl Carbamate Derivatives as Potential Fungicidal Agents 新型氨基甲酸芳基杀菌剂的合成、生物评价及构效关系研究
2区 农林科学
Agronomy-Basel Pub Date : 2025-11-28 DOI: 10.3390/agronomy15122741
Xiyao Liu, Zhonghao Han, Xufei Duan, Jiajun Zhang, Yanyan Cai, Meili Gao, Liyan Song, Binbin Huang, Ran Lin
{"title":"Synthesis, Bioevaluation and Structure-Activity Relationships of Novel N-Aryl Carbamate Derivatives as Potential Fungicidal Agents","authors":"Xiyao Liu, Zhonghao Han, Xufei Duan, Jiajun Zhang, Yanyan Cai, Meili Gao, Liyan Song, Binbin Huang, Ran Lin","doi":"10.3390/agronomy15122741","DOIUrl":"https://doi.org/10.3390/agronomy15122741","url":null,"abstract":"The exploitation of natural products as lead compounds continues to serve as a vital strategy for the discovery of novel fungicidal agents. This work designed and synthesized a series of carbamate derivatives based on the natural product physostigmine and commercial carbamate fungicides. The title compounds were synthesized from readily available aromatic aldehydes via green Curtius rearrangement. The antifungal activities of those compounds were evaluated in vitro against eight phytopathogenic fungi. Many of the carbamate compounds exhibited good fungicidal activities. Among those molecules, compounds 3a9, 3b1, 3b2 and 3b12 outperformed the potency of the positive control azoxystrobin against certain fungi. Moreover, compounds 3b2, 3b3, and 3b12 showed outstanding and broad-spectrum in vitro antifungal activities against seven fungi with an inhibition rate of over 70% at 50 μg/mL. The preliminary structure-activity relationship (SAR) investigations demonstrated that N-aryl carbamates bearing a chlorine atom(s) or two bromine atoms on the di-substituted phenyl ring showed superior antifungal potency. This work might lay the foundation for investigating natural-source-based green fungicides, which exhibited great potential as novel antifungal lead compounds.","PeriodicalId":56066,"journal":{"name":"Agronomy-Basel","volume":"15 12","pages":"2741-2741"},"PeriodicalIF":0.0,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4395/15/12/2741/pdf?version=1764313954","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147915170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Effect of Light Intensity on the Functional Traits of Two Ormosia Species 光照强度对两种红豆功能性状的影响
2区 农林科学
Agronomy-Basel Pub Date : 2025-11-27 DOI: 10.3390/agronomy15122729
Guohua He, Haiying Jiang, Xi Li, Lu Li, Shuo Feng, Rong Zou, Xiao Wei, Jianmin Tang
{"title":"Effect of Light Intensity on the Functional Traits of Two Ormosia Species","authors":"Guohua He, Haiying Jiang, Xi Li, Lu Li, Shuo Feng, Rong Zou, Xiao Wei, Jianmin Tang","doi":"10.3390/agronomy15122729","DOIUrl":"https://doi.org/10.3390/agronomy15122729","url":null,"abstract":"This study investigated two Ormosia species, Ormosia henryi and Ormosia hosiei, to examine their adaptive mechanisms to varying light conditions. Four light intensity treatments were applied to measure their growth parameters, photosynthetic characteristics, leaf microstructure, and chlorophyll content. The results showed that (1) both Ormosia species exhibited significant variations in functional traits under different light conditions. Growth parameters displayed high plasticity, and photosynthetic traits and leaf structural characteristics were optimal under 50% light intensity. (2) The overall phenotypic plasticity of O. henryi and O. hosiei was similar, though differences were observed in the plasticity of PT, SD, and Chl b, indicating distinct strategies in response to environmental changes. (3) Most functional traits were significantly correlated, and their coordinated changes contributed to the formation of adaptive capacity to light variation in both species. (4) During the seedling propagation of Ormosia species, approximately 50% shading should be applied. In conclusion, this study reveals the variation and adaptive mechanisms of functional traits in Ormosia seedlings under different light intensities, providing a theoretical basis for understory light environment management and shade cultivation, as well as a reference for further studies on the light ecological strategies and shade tolerance mechanisms of Ormosia species.","PeriodicalId":56066,"journal":{"name":"Agronomy-Basel","volume":"15 12","pages":"2729-2729"},"PeriodicalIF":0.0,"publicationDate":"2025-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4395/15/12/2729/pdf?version=1764238663","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147877549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparative Transcriptome Analysis of Leaves and Roots Revealed Organ-Specific and Cross-Stress Defense Strategies of Pearl Millet Under Different Abiotic Stresses 不同非生物胁迫下珍珠粟叶和根的转录组比较分析揭示了其器官特异性和交叉胁迫防御策略
2区 农林科学
Agronomy-Basel Pub Date : 2025-11-25 DOI: 10.3390/agronomy15122707
Qi Chen, Lixuan Luo, Tao Zhou, Jinxin Gan, Ningfang Liu, Rui Lu, Qian Xu, Longxing Hu, Guihua Chen
{"title":"Comparative Transcriptome Analysis of Leaves and Roots Revealed Organ-Specific and Cross-Stress Defense Strategies of Pearl Millet Under Different Abiotic Stresses","authors":"Qi Chen, Lixuan Luo, Tao Zhou, Jinxin Gan, Ningfang Liu, Rui Lu, Qian Xu, Longxing Hu, Guihua Chen","doi":"10.3390/agronomy15122707","DOIUrl":"https://doi.org/10.3390/agronomy15122707","url":null,"abstract":"Pearl millet (Pennisetum glaucum (L.) R. Br.) is widely recognized for its high tolerance to marginal environments. However, a systematic understanding of its organ-specific transcriptional adaptation mechanisms under individually applied abiotic stresses remains limited. In this study, we conducted a comparative transcriptome analysis of leaves and roots subjected to six distinct stress treatments (Ion stress: CdCl2/NaCl; Water stress: PEG/Waterlogging; Temperature stress: Heat/Cold), revealing fundamental differences in defense strategies between the two organs. Across all stresses, leaves showed more differentially expressed genes (DEGs) (213) than roots (118), yet the transcriptional responses were largely stress-specific. Carotenoid biosynthesis was the only pathway co-activated in leaves under both water and temperature stress. In contrast, roots exhibited a robust and conserved strategy, with significant enrichment of phenylpropanoid and flavonoid biosynthesis pathways consistently observed across all six stresses. This cross-stress synergistic response involved more than 300 enzyme genes in roots, including key enzymes such as peroxidases (128) and shikimate O-hydroxycinnamoyltransferases (33), which collectively contribute to root-specific cell wall reinforcement and oxidative stress defense. Interaction network analysis further revealed that the MYB transcription factor family serves as a central regulatory hub in root stress responses, with key nodes PMF4G04191 and PMF5G01787 frequently interacting with pathway genes under all stress conditions. This study elucidates the organ-specific and cross-stress defense mechanisms in pearl millet, providing valuable transcriptomic resources and candidate genes for molecular-assisted breeding of multi-stress-tolerant varieties.","PeriodicalId":56066,"journal":{"name":"Agronomy-Basel","volume":"15 12","pages":"2707-2707"},"PeriodicalIF":0.0,"publicationDate":"2025-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147919509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Gene Editing for Sugar Perception Transport and Source–Sink Optimization in Soybean 大豆糖感知转运基因编辑及源库优化
2区 农林科学
Agronomy-Basel Pub Date : 2025-11-14 DOI: 10.3390/agronomy15112621
Shuqi Ding, Li Chen, Wensheng Hou, Yupeng Cai
{"title":"Gene Editing for Sugar Perception Transport and Source–Sink Optimization in Soybean","authors":"Shuqi Ding, Li Chen, Wensheng Hou, Yupeng Cai","doi":"10.3390/agronomy15112621","DOIUrl":"https://doi.org/10.3390/agronomy15112621","url":null,"abstract":"Sugars serve as primary energy sources and key essential signaling molecules, playing pivotal roles in regulating plant growth and development. Crop yield is tightly linked to the efficient partitioning of photoassimilates from source leaves to sink organs. This process is intricately regulated by sugar sensing and transport systems, which orchestrate the dynamic source–sink balance by modulating phloem loading, long-distance translocation, and sink unloading. While substantial progress has been made in deciphering these mechanisms in model organisms, a comprehensive understanding of the regulatory network in soybean—a globally significant crop with unique plant architecture in which leaves, inflorescences, and pods are borne on nodes—remains elusive. The emergence of gene-editing tools, notably CRISPR/Cas9, offers powerful tools for dissecting redundant transporter families and targeted engineering of key regulatory nodes. This review synthesizes the current understanding of the molecular networks governing sugar perception and long-distance transport, with a specific focus on soybean. It further explores the utility of gene editing in accelerating the functional characterization of critical components and highlights potential molecular targets for manipulating source–sink dynamics to enhance soybean yield.","PeriodicalId":56066,"journal":{"name":"Agronomy-Basel","volume":"15 11","pages":"2621-2621"},"PeriodicalIF":0.0,"publicationDate":"2025-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147879622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Transcription Factor AcMYB5 Activates Flavonoid Biosynthesis and Enhances Resistance of Kiwifruit to Bacterial Canker 转录因子AcMYB5激活类黄酮生物合成并增强猕猴桃对细菌溃疡病的抗性
2区 农林科学
Agronomy-Basel Pub Date : 2025-11-12 DOI: 10.3390/agronomy15112598
S. P. Wu, Rundong Dai, Wenli Yue, Ge Guo, Jiawei Liu, Yue Huang, Pu Liu
{"title":"Transcription Factor AcMYB5 Activates Flavonoid Biosynthesis and Enhances Resistance of Kiwifruit to Bacterial Canker","authors":"S. P. Wu, Rundong Dai, Wenli Yue, Ge Guo, Jiawei Liu, Yue Huang, Pu Liu","doi":"10.3390/agronomy15112598","DOIUrl":"https://doi.org/10.3390/agronomy15112598","url":null,"abstract":"Bacterial canker of kiwifruit, caused by Pseudomonas syringae pv. actinidiae (Psa), poses a serious threat to the global kiwifruit industry. Although flavonoids are widely recognized as natural antibacterial compounds, the transcriptional regulatory networks controlling their synthesis in kiwifruit and their relationship with production of downstream antibacterial metabolites remain poorly understood. In this study, we identified the transcription factor AcMYB5 as a key mediator of salicylic acid (SA) signaling that activates flavonoid biosynthesis and enhances resistance to Psa. Comparative analysis between the resistant cultivar ‘Jinkui’ and the susceptible cultivar ‘Hongyang’ revealed that Psa infection induced a rapid accumulation of endogenous SA, accompanied by a decrease in jasmonic acid (JA) levels in ‘Jinkui’. From a pool of SA-induced candidate genes, we identified AcMYB5, which is rapidly up-regulated by SA and encodes a nuclear localization protein. Overexpression of AcMYB5 in susceptible kiwifruit significantly enhanced resistance to Psa. Mechanistically, AcMYB5 directly binds to and activates the promoter of the chalcone isomerase (AcCHI), a key structural gene in the flavonoid pathway, leading to a marked increase in total flavonoid content. Notably, AcMYB5 did not activate any other genes in the flavonoid synthesis pathway in our assays, underscoring its target specificity. Our findings reveals a novel AcMYB5-AcCHI module that finely tunes flavonoid-mediated defense responses, offering valuable genetic targets and strategic insights for kiwifruit-resistant breeding.","PeriodicalId":56066,"journal":{"name":"Agronomy-Basel","volume":"15 11","pages":"2598-2598"},"PeriodicalIF":0.0,"publicationDate":"2025-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147894398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Responses of Photosynthetic Activity in Flag Leaves and Spikes as well as Seed Development of Wheat (Triticum aestivum L.) to Artificial Shading 小麦旗叶、穗光合活性及种子发育对人工遮荫的响应
2区 农林科学
Agronomy-Basel Pub Date : 2025-11-09 DOI: 10.3390/agronomy15112577
Kieun Song, Sesil Hong, Sang-In Shim
{"title":"Responses of Photosynthetic Activity in Flag Leaves and Spikes as well as Seed Development of Wheat (Triticum aestivum L.) to Artificial Shading","authors":"Kieun Song, Sesil Hong, Sang-In Shim","doi":"10.3390/agronomy15112577","DOIUrl":"https://doi.org/10.3390/agronomy15112577","url":null,"abstract":"The accumulation of photoassimilates in the sinks during the grain filling stage is affected by the conditions of the various source organs. This study was conducted to investigate changes in various source and sink organs when the flag leaves and spikes were shaded from heading to harvest in wheat. Shading the flag leaves increased chlorophyll content and chlorophyll fluorescence in the uppermost leaves by 34.9% and 0.3% in 2022 and 75.3% and 3.3% in 2023, respectively, maintaining a relatively high photosynthetic rate from heading to the mid-grain filling stage. However, shading the spikes had a more substantial negative impact on spike growth than the flag leaf shading. On the other hand, the uppermost leaves continued to serve as a source more actively even when the flag leaves were shaded, implying a compensating effect. At 35 days after treatment (DAT), the relative water content (RWC) of the spike in the spike shading (SS) treatment was 19.4% and 49.7% higher than that of the control in 2022 and 2023, respectively. However, grain weight in the SS treatment decreased by 39.7% in 2022 and 5.3% in 2023 compared with the control. In the flag leaf shading (FS) treatment, grain weight declined by 3.5% and 6.2% in 2022 and 2023, respectively. These results indicate that the reduction in grain weight due to shading was less pronounced in the SS treatment than in the FS and combined flag leaf and spike shading (FSS) treatments. The results suggest that spikes play a buffering role when assimilate-transport functions decline in the source organs. Our results provide a better understanding of the architectural properties, including flag leaf, spike, and the uppermost leaf, for photosynthetic contribution to grain filling in wheat. Also, identifying target characteristics for improving photosynthetic source organs will be valuable for developing wheat varieties with high yield stability.","PeriodicalId":56066,"journal":{"name":"Agronomy-Basel","volume":"15 11","pages":"2577-2577"},"PeriodicalIF":0.0,"publicationDate":"2025-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4395/15/11/2577/pdf?version=1762769249","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147878820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Genotype-Specific Synergy Between Arbuscular Mycorrhizal Fungi and Olive Cultivars Enhances Drought Resilience in China’s Olive Belt 丛枝菌根真菌与橄榄树品种基因型特异性协同作用增强中国橄榄树带抗旱性
2区 农林科学
Agronomy-Basel Pub Date : 2025-11-07 DOI: 10.3390/agronomy15112568
Junlin Zhou, Yan Deng, Junfei Li, Zhou Xu, Bixia Wang, Xiao Xu, Chunyan Zhao
{"title":"Genotype-Specific Synergy Between Arbuscular Mycorrhizal Fungi and Olive Cultivars Enhances Drought Resilience in China’s Olive Belt","authors":"Junlin Zhou, Yan Deng, Junfei Li, Zhou Xu, Bixia Wang, Xiao Xu, Chunyan Zhao","doi":"10.3390/agronomy15112568","DOIUrl":"https://doi.org/10.3390/agronomy15112568","url":null,"abstract":"To address severe seasonal drought affecting over 60% of China’s olive-growing regions, this study evaluates whether arbuscular mycorrhizal fungi (AMF) can enhance drought tolerance in elite olive cultivars (Arbequina and Koroneiki) under simulated arid conditions. A controlled pot experiment inoculated seedlings with two AMF strains (Rhizophagus intraradices [AMF1], Funneliformis mosseae [AMF2]) under full irrigation or a 32-day water deficit. Biomass, root colonization, photosynthesis, PSII efficiency, osmolytes, antioxidants, and lipid peroxidation were measured. Data were analyzed via two-way ANOVA, Pearson’s correlation, and principal component analysis (PCA). Under optimal hydration, both AMF strains colonized >60% of roots, significantly increasing Arbequina biomass by 25–35% (p < 0.05) and Koroneiki biomass. Drought reversed benefits in Arbequina but triggered resilience: AMF1 restored photosynthesis (18%), Fv/Fm (37%), and water potential (18%) (p < 0.05) while reducing lipid peroxidation (79%) (p < 0.01). In Koroneiki, AMF2 restored Ψw to 47% of pre-irrigation levels and increased root volume (137%), PSII efficiency (43%), osmolytes (100%), and carotenoids (28%) (p < 0.01). PCA ranked Arbequina–drought–AMF1 as the most resilient combination. Pairing AMF strains with specific cultivars offers a scalable, chemical-free strategy to stabilize olive productivity in southwest China’s aridifying climate, advancing climate-smart agriculture for drought-prone regions.","PeriodicalId":56066,"journal":{"name":"Agronomy-Basel","volume":"15 11","pages":"2568-2568"},"PeriodicalIF":0.0,"publicationDate":"2025-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4395/15/11/2568/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147332252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Exogenous Melatonin Effects on Drought-Stressed Longan Plants: Physiology and Transcriptome Insights 外源褪黑素对干旱胁迫龙眼植物的影响:生理和转录组研究
2区 农林科学
Agronomy-Basel Pub Date : 2025-10-30 DOI: 10.3390/agronomy15112530
Beibei Qi, Rongshao Huang, Qin XianQuan, Ning Xu, Liangbo Li, Kexin Cao, Hongye Qiu, Jianhua Chen
{"title":"Exogenous Melatonin Effects on Drought-Stressed Longan Plants: Physiology and Transcriptome Insights","authors":"Beibei Qi, Rongshao Huang, Qin XianQuan, Ning Xu, Liangbo Li, Kexin Cao, Hongye Qiu, Jianhua Chen","doi":"10.3390/agronomy15112530","DOIUrl":"https://doi.org/10.3390/agronomy15112530","url":null,"abstract":"Drought stress severely constrains yield and quality stability in longan (Dimocarpus longan Lour.), an important medicine and food homology fruit in China. Melatonin (MT) shows potential for alleviating abiotic stress, but its mechanisms in drought-stressed longan remain unclear. Here, we investigated two cultivars (Shixia and Chuliang) under drought and exogenous MT treatments (CW, well-watered control; CM, exogenous MT application under well-watered control; DW, drought stress; DM, exogenous MT application under drought stress), revealing the following findings: (i) Drought treatment significantly reduced endogenous MT levels in both studied cultivars, and the reduction was reversed by exogenous foliar MT application. Specifically, under drought conditions, exogenous MT treatment increased endogenous MT content by 272.7% in Shixia and 53.6% in Chuliang, respectively. (ii) Drought and exogenous MT treatments modulated the activities of plant defense enzymes (superoxide dismutase, SOD; peroxidase, POD; phenylalanine ammonia lyase, PAL; and catalase, CAT) and the levels of related metabolites (malondialdehyde, MDA; proline, Pro). Across both cultivars, drought stress increased the activities of SOD, POD, and PAL, as well as the Pro content. Exogenous MT treatment, however, reduced the activities of SOD, POD, and PAL while increasing CAT activity and MDA content to some extent in both cultivars. Notably, the Pro content was significantly reduced in Shixia but significantly increased in Chuliang following exogenous MT application under drought stress. (iii) Drought and exogenous MT treatments regulated gene expression in longan cultivars. Relative to CW, 848, 3356, and 2447 differentially expressed genes (DEGs) were detected in CM, DW, and DM in Shixia, respectively. Relative to CW, 1349, 5260, and 5116 DEGs were identified in CM, DW, and DM in Chuliang. A gene ontology analysis indicated significant enrichment for abiotic stress defense and hormone-responsive processes. The KEGG pathway analysis showed significant enrichment in protein processing in the endoplasmic reticulum (ko04141), amino sugar and nucleotide sugar metabolism (ko00520), ascorbate and aldarate metabolism (ko00053), plant–pathogen interaction (ko04626), and starch and sucrose metabolism (ko00500). These findings provide physiological and transcriptomic insights into MT-regulated drought responses in longan, highlighting its potential for improving productivity in drought-prone regions.","PeriodicalId":56066,"journal":{"name":"Agronomy-Basel","volume":"15 11","pages":"2530-2530"},"PeriodicalIF":0.0,"publicationDate":"2025-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4395/15/11/2530/pdf?version=1761901973","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147331945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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