Plant Stress最新文献

{"title":"How Xylella fastidiosa subsp. pauca influences endophytic communities and plant physiology in resistant and susceptible olive tree cultivars","authors":"Marzia Vergine ,&nbsp;Federico Vita ,&nbsp;Mariarosaria De Pascali ,&nbsp;Giambattista Carluccio ,&nbsp;Erika Sabella ,&nbsp;Alessandro Passera ,&nbsp;Paola Casati ,&nbsp;Luigi De Bellis ,&nbsp;Andrea Luvisi","doi":"10.1016/j.stress.2025.100924","DOIUrl":"10.1016/j.stress.2025.100924","url":null,"abstract":"<div><div>This study explores the interaction between endophytic communities and olive trees (<em>Olea europaea</em> L.) infected by <em>Xylella fastidiosa</em> subsp. <em>pauca</em> (<em>Xfp</em>), the causal agent of Olive Quick Decline Syndrome (OQDS). A multidisciplinary approach was used to assess physiological markers (malondialdehyde, proline, total phenolics and flavonoids), pigment contents (Chl <em>a</em>, Chl <em>b</em>, carotenoids), relative water content (RWC), enzymatic activities (APX, CAT, T-SOD) as well as the diversity and composition of endophytes, in resistant (Leccino) and susceptible (Cellina di Nardò) olive cultivars at varying levels of <em>Xfp</em> infection. Trees were sampled in naturally infected orchards in Apulia (Southern Italy) and grouped by <em>Xfp</em> titer: control (≤10² cfu/mL), low (10³–10⁵), and high (≥10⁶).</div><div>The results show consistent titer-dependent changes: pigment content and RWC decreased with increasing infection, while stress markers and carotenoids increased. High-throughput sequencing of 16S rRNA and ITS regions revealed significant differences in microbial communities.</div><div>The Cellina microbiome appeared highly variable and sensitive to infection levels, whereas Leccino exhibited a higher abundance and diversity of beneficial endophytes, including those known to produce antimicrobial compounds and promote plant health. Malondialdehyde data suggest lower oxidative damage in Leccino, reflecting enhanced stress tolerance. In contrast, the compromised endophytic structure in Cellina may exacerbate its vulnerability to <em>Xfp</em>. These findings suggest that <em>Xfp</em> modulates plant metabolism and, in turn, the endophytic community composition by inducing physiological changes in the host plant to counteract pathogen activity. These alterations may affect natural defence mechanisms, including the potential role of specific endophytes in enhancing resistance to <em>Xfp</em>.</div></div>","PeriodicalId":34736,"journal":{"name":"Plant Stress","volume":"17 ","pages":"Article 100924"},"PeriodicalIF":6.8,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144469864","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}

{"title":"Nitrate enhances salt tolerance of wild jujube by regulating nutrient homeostasis and nitrate transporters","authors":"Ayimaiti Abudoukayoumu ,&nbsp;Yunfei Li ,&nbsp;Yue Sun ,&nbsp;Yan Cao ,&nbsp;Yaning Hu ,&nbsp;Jian Huang","doi":"10.1016/j.stress.2025.100927","DOIUrl":"10.1016/j.stress.2025.100927","url":null,"abstract":"<div><div>Wild jujube (<em>Ziziphus jujuba</em> var. <em>spinosa</em>), the wild relative of cultivated jujube, widely used as rootstock in jujube cultivation, demonstrates adaptive advantages under abiotic stress. Despite the critical role of nitrogen in plant growth and development, as well as its association with salt tolerance, the mechanisms underlying nitrate-mediated salinity adaptation in perennial woody plants remain poorly understood. In this study, we systematically investigated the effects of nitrate (0.5, 2, and 10 mM NaNO₃) on the growth and physiological responses of wild jujube seedlings under 100 mM NaCl stress. Our results revealed interactive effects between NaCl and NaNO₃ on growth performance and physiological responses. Elevated nitrate levels alleviated NaCl-induced toxicity by reducing MDA accumulation, enhancing antioxidant enzyme activities (superoxide dismutase, catalase, and peroxidase), and promoting the accumulation of potassium, calcium, magnesium, proline, and soluble proteins in leaves. Transcriptional profiling identified six nitrate transporters (<em>ZjNPF5.4, ZjNPF7.2, ZjNPF4.6, ZjNPF3.4, ZjNPF5.13</em>, and <em>ZjNPF2.10</em>) that were specifically upregulated in roots under combined salt-nitrogen stress. Functional validation using <em>Agrobacterium tumefaciens</em>-mediated hairy root transformation demonstrated that overexpression of <em>ZjNPF5.4</em> and <em>ZjNPF7.2</em> enhanced nitrogen assimilation, reduced oxidative damage, and improved the K⁺/Na⁺ ratio, thereby conferring salt tolerance. This study elucidates the molecular mechanisms underlying nitrate-mediated salt tolerance in wild jujube and provides insights that could be harnessed to develop salt-tolerant jujube cultivars.</div></div>","PeriodicalId":34736,"journal":{"name":"Plant Stress","volume":"17 ","pages":"Article 100927"},"PeriodicalIF":6.8,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144331362","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}

{"title":"Multifaceted roles of ethylene in plants: From traditional functions to modern insights into tritrophic interactions for sustainable agriculture","authors":"Jamin Ali ,&nbsp;Rizhao Chen ,&nbsp;Mohammad Mukarram ,&nbsp;Adil Tonğa ,&nbsp;Khalid Ali Khan ,&nbsp;Hamed A. Ghramh ,&nbsp;Gabriela Jamnická ,&nbsp;Qiyun Li ,&nbsp;Daniel Kurjak","doi":"10.1016/j.stress.2025.100925","DOIUrl":"10.1016/j.stress.2025.100925","url":null,"abstract":"<div><div>Ethylene, a critical phytohormone, regulates diverse physiological processes in plants, from growth and development to responses to abiotic and biotic stresses. While its role in plant development and direct defence against herbivory has been extensively studied, its potential involvement in indirect defence, particularly in recruiting biological control agents, remains insufficiently explored. This review examines ethylene’s multifaceted role in plants, with an emphasis on its established functions in plant defence and the need for further research into its contribution to indirect defences. Beginning with an overview of ethylene biosynthesis, transport, and signaling pathways, we outline its traditional roles in plant growth and development before discussing its functions in plant defence. The review explores ethylene's involvement in direct defences through physical and biochemical responses and its interactions with other phytohormones. Additionally, we highlight the limited studies on ethylene’s potential role in indirect defences, particularly in plant-plant communication and the recruitment of natural enemies such as predators and parasitoids, underscoring the need for further investigation in this area. Furthermore, we discuss the potential applications of ethylene in sustainable agriculture, proposing its integration into pest management strategies to enhance crop resilience and reduce reliance on synthetic pesticides. By identifying key knowledge gaps, this review highlights the importance of ethylene as a promising but underexplored component of plant defence and calls for future research to better understand its ecological significance and practical applications in pest management.</div></div>","PeriodicalId":34736,"journal":{"name":"Plant Stress","volume":"17 ","pages":"Article 100925"},"PeriodicalIF":6.8,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144365059","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}

{"title":"Genome-wide identification of sugarcane HAT gene family and functional analysis of ScHAT1 in stress response","authors":"Shijiang Cui ,&nbsp;Shiwei Yang ,&nbsp;Ping Zhao ,&nbsp;Shoujian Zang ,&nbsp;Zhenxiang Li ,&nbsp;Peixia Lin ,&nbsp;Wanying Zhao ,&nbsp;Yuanyuan Zhang ,&nbsp;Dongjiao Wang ,&nbsp;Youxiong Que ,&nbsp;Qibin Wu","doi":"10.1016/j.stress.2025.100923","DOIUrl":"10.1016/j.stress.2025.100923","url":null,"abstract":"<div><div>Sugarcane (<em>Saccharum</em> spp.) is a globally important crop for sugar production, but its growth and development are affected by various biotic and abiotic stresses. Histone acetyltransferases (HATs) are key regulators in plant stress responses, yet their functions and mechanisms remain largely unexplored in sugarcane. Here, we identified 44, 62, and 13 HAT gene family members from R570 (<em>S</em>. spp. hybrid), LA-purple (<em>S. officinarum</em>), and AP85-441 (<em>S. spontaneum</em>), respectively. They were assigned to four well-defined subfamilies, including HAG, HAC, HAM, and HAF. Notably, stress-responsive elements were significantly enriched in the promoter regions of the HAM subfamily. Expression pattern analysis revealed that several sugarcane <em>HAT</em> genes responded to smut (<em>Sporisorium scitamineum</em>) and drought stress, with <em>ShHAT24</em> showing significant upregulation under both stress conditions. Furthermore, a homolog of <em>ShHAT24</em>, named <em>ScHAT1</em>, was successfully cloned from the sugarcane variety ROC22. Its expression was significantly upregulated in the smut-susceptible ROC22 variety post smut pathogen infection. Additionally, <em>ScHAT1</em> gene conferred enhanced tolerance to salt and drought stress. Interestingly, overexpression of <em>ScHAT1</em> inhibited the transcription of genes involved in the salicylic acid (SA) and jasmonic acid (JA) signaling cascades, thereby increasing plant susceptibility to pathogens. This study provides insights into the evolutionary characteristics of sugarcane HAT gene family and reveals the dual role of <em>ScHAT1</em> during plant interactions with biotic and abiotic stresses, presenting a potential target for improving stress resistance in sugarcane breeding.</div></div>","PeriodicalId":34736,"journal":{"name":"Plant Stress","volume":"17 ","pages":"Article 100923"},"PeriodicalIF":6.8,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144313618","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}

{"title":"Continuous sensing of water status in the root zone of wheat plants reveals features of circadian-dependent water uptake under mild water deficit","authors":"Ismael Gutiérrez-Fernández ,&nbsp;Ouardia Bendou ,&nbsp;Emilio L. Marcos-Barbero ,&nbsp;Nara Bueno-Ramos ,&nbsp;Ana I. González-Hernández ,&nbsp;Rosa Morcuende ,&nbsp;Juan B. Arellano","doi":"10.1016/j.stress.2025.100922","DOIUrl":"10.1016/j.stress.2025.100922","url":null,"abstract":"<div><div>Drought studies mostly rely on field capacity (<em>FC</em>) to maintain an imposed soil water deficit. However, they frequently overlook <em>in situ</em> water availability changes, hindering full understanding of soil water uptake by plants. Soil water potential (Ψ_S) may cover the limitation of relying solely on a defined percentage of <em>FC</em>. We conducted a pot experiment in which wheat growth stage- and diurnal-dependent water dynamics was concurrently and continuously monitored using volumetric water content (<em>VWC</em>) and Ψ_S sensors. Low-frequency fertigation in alternate days was applied to maintain mild water deficit (65 % <em>FC</em>) with a mean Ψ_S value of −16.1 kPa. The combined installation of <em>VWC</em> and Ψ_S sensors in the potted root zone disclosed fine features of diurnal oscillations in water uptake rate, endogenously controlled by the plant circadian rhythm, with a maximum rate ratio of five between daytime and nighttime. Flag leaves showed 20 % decrease in both biomass and area, while proline content increased 60 %. Osmotic adjustment favoured keeping daytime stomatal conductance, photosynthesis and <em>WUE</em>. At milk development, day-to-day root water uptake remained unchanged between two consecutive days despite lower water availability every second day. A decline in Ψ_Leaf between consecutive days led to nitrate accumulation. At maturity, grain yield and plant biomass showed parallel reductions in ca. 40 %, reflecting the difference in water use between water treatments. This approach connecting soil water availability with the plant’s circadian-dependent root water uptake using <em>VWC</em> and Ψ_S sensors went beyond their conventional use and is recommended to explore plant adaptation to water deficit.</div></div>","PeriodicalId":34736,"journal":{"name":"Plant Stress","volume":"17 ","pages":"Article 100922"},"PeriodicalIF":6.8,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144320970","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}

{"title":"Differential involvement of MYB13 and MYB15 transcription factors in isoflavonoid biosynthesis and tolerance to salt stress in Lotus japonicus","authors":"María Dolores Monje-Rueda ,&nbsp;Peter Pal'ove-Balang ,&nbsp;Antonio J. Márquez ,&nbsp;Marco Betti ,&nbsp;Margarita García-Calderón","doi":"10.1016/j.stress.2025.100913","DOIUrl":"10.1016/j.stress.2025.100913","url":null,"abstract":"<div><div>Understanding the mechanisms involved in the response to abiotic stress is essential to enhance plant stress resilience and ensure sustainable agriculture. In this study we report different roles for two closely related MYB transcription factors (TFs), MYB13 and MYB15, in the legume model <em>Lotus japonicus</em>. Different growth and biochemical parameters were determined for mutant lines impaired in these TFs under either control conditions or under two different types of abiotic stress: salinity and UV-B irradiation. Our findings show that MYB15 positively regulates isoflavonoid biosynthesis under UV-B irradiation but does not affect salt tolerance. In contrast, MYB13 does not appear to be involved in the UV-B response but plays a significant role in salt stress tolerance, as specific mutants lacking MYB13 exhibited increased NaCl resistance. Further analysis revealed that salt tolerance in <em>Ljmyb13</em> mutants is associated with changes in vestitol and chloride ion (Cl^-) levels, as well as modifications in root architecture. Moreover, the growth of both mutants was enhanced in the absence of abiotic stress, but only under non-symbiotic conditions. These findings highlight the differential roles of MYB13 and MYB15 in regulating stress responses and provide insights into potential mechanisms of salt stress adaptation in <em>L. japonicus</em>.</div></div>","PeriodicalId":34736,"journal":{"name":"Plant Stress","volume":"17 ","pages":"Article 100913"},"PeriodicalIF":6.8,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144297992","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}

{"title":"Drought-induced shifts in cowpea rhizoplane bacterial communities across different vegetative and reproductive stages","authors":"Durga P.M. Chinthalapudi ,&nbsp;Nisarga Kodadinne Narayana ,&nbsp;Sujan Poudel ,&nbsp;John P. Brooks ,&nbsp;Shankar Ganapathi Shanmugam ,&nbsp;Raju Bheemanahalli","doi":"10.1016/j.stress.2025.100915","DOIUrl":"10.1016/j.stress.2025.100915","url":null,"abstract":"<div><div>The increasing prevalence of drought poses significant challenges to global food security, necessitating a deeper understanding of plant-microbiome interactions which help crop production. This study investigated the dynamics of drought stress-induced changes in rhizosphere-associated bacterial communities of two cowpea (<em>Vigna unguiculata</em> L.) genotypes (EpicSelect4 and UCR369) across four growth stages. Community-level physiological profiling using Biolog EcoPlate analysis revealed that drought reduced rhizosphere microbial metabolic activity (carbon substrate utilization) in both genotypes, but UCR369 maintained higher metabolic capability than EpicSelect4 across growth stages. Further, integration of amplicon metagenomics and physiological data showed that drought significantly altered rhizoplane bacterial communities in cowpea, with distinct genotype-specific responses. There was a decline in Alpha diversity under drought, while community composition shifted based on genotype. Beta diversity results revealed that genotype and drought significantly influenced microbial community structure across growth stages. <em>Proteobacteria</em> dominated the root zone of the EpicSelect4 genotype, while UCR369 showed an increase in <em>Actinobacteria</em> under drought conditions. Redundancy analysis revealed that soil enzyme activities (β-glucosidase and N-acetyl-glucosaminidase) and physiological traits werecorrelated significantly with microbial community shifts. Interpretable machine learning approach identified <em>Actinobacteriota</em> and <em>Cyanobacteria</em> as the key biomarkers enriched under drought, with genera such as <em>Streptomyces</em> and <em>Ensifer</em> potentially contributing to drought tolerance. The Random Forest model coupled with SHapley Additive exPlanations (SHAP) values demonstrated high predictive accuracy for identifying drought-related biomarkers, aligning with DeSeq2 analysis results. These models provided insights into the potential contributions of specific microbial taxa to cowpea drought tolerance, offering a promising avenue for developing microbiome-based strategies to improve crop resilience and sustainability under drought conditions.</div></div>","PeriodicalId":34736,"journal":{"name":"Plant Stress","volume":"17 ","pages":"Article 100915"},"PeriodicalIF":6.8,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144288759","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}

{"title":"Nickel hydroxide nanosheet interacts with nitric oxide to stimulate glycolytic pathway, nutrient assimilation and defense system against arsenic toxicity in wheat","authors":"Sarika Kumari ,&nbsp;Pravneet Kaur ,&nbsp;Iram Wahid ,&nbsp;Rafiq Ahmad ,&nbsp;Byeong-Il Lee ,&nbsp;Moksh Mahajan ,&nbsp;M. Iqbal R. Khan","doi":"10.1016/j.stress.2025.100920","DOIUrl":"10.1016/j.stress.2025.100920","url":null,"abstract":"<div><div>Arsenic (As) stress has been steadily causing large-scale loss in crop production. However, the advent of robust approaches to create nanoscale materials, such as nanosheets (NS), embodies a significant stepping milestone. The interaction between nickel hydroxide NS and plant signaling molecules, including nitric oxide (NO), has not been yet elucidated in mediating As stress tolerance in plants. The present study has reported the use of nickel hydroxide NS, wherein its application with NO has significantly impeded oxidative stress by regulating defense pathways and NO synthesis in the As-stressed wheat plants. Additionally, photosynthesis, glycolysis and source-sink responses were positively regulated by nickel hydroxide NS and NO upon As exposure, along with mineral nutrients enrichment. However, nickel hydroxide NS displayed better efficacy with NO in conferring As stress tolerance, which benefited wheat growth and yield output. Moreover, nickel hydroxide NS was effective in eliciting NO biosynthesis under As stress to sustain plant tolerance, even in the presence of NO scavenger. Conclusively, this study aims to enhance As stress tolerance in wheat by incorporating nickel hydroxide NS and exploring their interaction with NO to improve plant sustainability. The path to a greater sustainable future could be facilitated by this research in the area of nanobiotechnology-based agricultural implications.</div></div>","PeriodicalId":34736,"journal":{"name":"Plant Stress","volume":"17 ","pages":"Article 100920"},"PeriodicalIF":6.8,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144313617","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}

{"title":"Mitigating zinc oxide nanotoxicity in tomato plants: Role of Trichoderma-modulated rhizosphere microbiomes and soil glomalin content","authors":"Raja Asad Ali Khan ,&nbsp;Muhammad Irfan Siddique ,&nbsp;Peng Li ,&nbsp;Musharaf Ahmad","doi":"10.1016/j.stress.2025.100919","DOIUrl":"10.1016/j.stress.2025.100919","url":null,"abstract":"<div><div>The toxicity is produced for living organisms when the nanomaterials are developed in the natural ecosystem either naturally or if introduced by humans. Nevertheless, there is a huge gap in the research of this area, and investigations are being conducted to determine the potential detrimental impacts of the nanomaterials and the means of eliminating the potential toxicities. In our research, we investigated the potential of zinc oxide nanoparticle (ZnONPs) tolerant <em>Trichoderma pseudoharzianum</em> T113 strains in reducing the toxicity of ZnO NPs in tomato crops. Our research findings of a very thoroughly investigated experiment on mechanism of action revealed that application of T113 in NPs amended soil triggered an appreciable change in the microbial diversity of the soil and improved the population density and diversity of the growth-promoting soil microbes and fungi that produced glomalin, a protein responsible for metal chelating. The amount of glomalin in the soil was significantly improved in soil by T113 strain inoculation. The diversity and abundance of the microbes, having beneficial impacts on plants and the glomalin in soil, drastically reduced the NPs induced toxicity under the application of the T113 strain of <em>T. pseudoharzianum</em>. Plants inoculated with the T113 strain, when grown in NP- NP-contaminated soil, exhibited increased growth, enhanced antioxidant activities, improved photosynthesis, and a decline in damage induced by oxidative stress and the accumulation and translocation of Zn. Moreover, applying the T113 strain also reduced the Zn bioavailability in soil contaminated with NPs. These research findings are an eco-friendly and sustainable solution to the ZnO NP toxicity in the host plants.</div></div>","PeriodicalId":34736,"journal":{"name":"Plant Stress","volume":"17 ","pages":"Article 100919"},"PeriodicalIF":6.8,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144280202","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}

{"title":"Decoding the Hormonal, Genetic, and Environmental Signals Regulating Leaf Angle in Plants","authors":"Ahmad Ali ,&nbsp;Ting-Ting Zhao ,&nbsp;Cui-Lian Feng ,&nbsp;Xue-Ting Zhao ,&nbsp;Ling Li ,&nbsp;Rui-Jie Wu ,&nbsp;Hong-Bo Liu ,&nbsp;Qi-Xing Huang ,&nbsp;Ji-Shan Lin ,&nbsp;Jun-Gang Wang","doi":"10.1016/j.stress.2025.100918","DOIUrl":"10.1016/j.stress.2025.100918","url":null,"abstract":"<div><div>Plant architecture is a key determinant of canopy structure, light interception, photosynthetic efficiency and overall biomass production. In response to changing environmental conditions, plants dynamically adjust their growth and architectural traits to optimize resource use and productivity. Leaf angle (LA) is one of the vital agronomic traits that influences leaf orientation, with erect leaf phenotypes enhancing light capture, nitrogen use efficiency and yield, particularly advantageous in high-density planting systems. This review provides a comprehensive overview of the hormonal and genetic regulatory networks that control leaf structure and specifically LA. It highlights the role of major phytohormones pathways, including brassinosteroids (BR), auxin (IAA), gibberellins (GA), and cytokinins (CKs), with an emphasis on their roles in shaping leaf architecture. BR signaling, in particular, emerges as a central hub, coordinating developmental responses through extensive crosstalk with IAA, GA, and other signaling cascades. Additionally, this review also explores how environmental constraints interact with hormonal and transcriptional dynamics of these pathways to modulate LA, highlighting the complex interplay between intrinsic genetic programs and external conditions. Overall, this review explores current insights into the key genes, signaling pathways, molecular networks, and diverse environmental factors involved in LA regulation. It emphasizes their practical significance in plant architectural optimization and implications for high-density planting adaptability, crop improvement and sustainable agricultural productivity.</div></div>","PeriodicalId":34736,"journal":{"name":"Plant Stress","volume":"17 ","pages":"Article 100918"},"PeriodicalIF":6.8,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144320969","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}