Environmental and Experimental Botany最新文献

{"title":"Metabolite profiling reveals distinct changes in C-and N-metabolism of lentil (Lens culinaris Medik.) under CO2 enrichment in two contrasting growing seasons in the field","authors":"Shahnaj Parvin ,&nbsp;Shihab Uddin ,&nbsp;Sabine Tausz-Posch ,&nbsp;Ute Roessner ,&nbsp;Glenn J. Fitzgerald ,&nbsp;Roger Armstrong ,&nbsp;Michael Tausz","doi":"10.1016/j.envexpbot.2025.106182","DOIUrl":"10.1016/j.envexpbot.2025.106182","url":null,"abstract":"<div><div>Elevated atmospheric [CO₂] (e[CO₂]) may alleviate the effects of water stress on plants. It is unclear however whether this results exclusively from changes in stomatal conductance and water savings or also reflects changes in metabolic pathways triggered by the extra carbohydrate supplies under e[CO₂]. To help address this knowledge gap, metabolite patterns were analysed in leaves and nodules of lentils grown in a Free-Air CO₂ Enrichment facility in a water limited agro-ecosystem over the course of two contrasting growing seasons, one with high (well above average), and one with low (well below average) rainfall. Metabolomic analyses of tissues sampled at flowering showed contrasting responses to e[CO₂] in the contrasting seasons. In the high rainfall season, e[CO₂] was associated with more pronounced signatures of active energy and amino acid metabolism in leaves as well as in nodules, and particularly increased abundance of proteinogenic amino acids in leaves and nodules, which suggested strong stimulation of nodule N₂-fixation and N supply to leaves. In the low rainfall season, e[CO₂] was associated with high abundance of stress responsive metabolites, including putative osmo-protectants such as sugars and polyols as well as some N-containing compounds (proline, γ-aminobutyric acid, putrescine), while the concentration of proteinogenic amino acids in leaves was reduced. In nodules, e[CO₂] was linked to lower concentrations of sugars, polyols and most proteinogenic amino acids, along with higher concentrations of N-containing stress metabolites. However, there was little evidence that e[CO₂] enhanced energy and amino acid metabolism in the low rainfall season. This study suggests that e[CO₂] amplifies rather than mitigates the effect of different seasons on lentil metabolism. Whilst in a high rainfall season e[CO₂] intensified metabolic patterns related to active growth and N-fixation, in a low rainfall season e[CO₂] strengthened stress response signatures.</div></div>","PeriodicalId":11758,"journal":{"name":"Environmental and Experimental Botany","volume":"237 ","pages":"Article 106182"},"PeriodicalIF":4.5,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144272309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Zn induced modifications in cell wall structure and lignin biosynthesis pathways improving cadmium tolerance in barley","authors":"Farah Kanwal ,&nbsp;Javaria Tabusam ,&nbsp;Ameer Khan ,&nbsp;Syed Muhammad Hassan Askri ,&nbsp;Sana Ullah ,&nbsp;Guoping Zhang","doi":"10.1016/j.envexpbot.2025.106183","DOIUrl":"10.1016/j.envexpbot.2025.106183","url":null,"abstract":"<div><div>Cadmium (Cd) contamination in soil threatens global food production and human health. This study investigated zinc (Zn) addition as a potential strategy to mitigate Cd stress using two barley genotypes, Dong-17 (Cd-sensitive) and WSBZ (Cd-tolerant). Hydroponically grown seedlings were treated with different Cd (0, 1.0, 10 μM) and Zn (0, 5, 50 μM) levels. Results showed that Zn addition effectively alleviated Cd induced growth inhibition, improving SPAD values, photosynthetic parameters, fluorescence efficiency (Fv/Fm), and biomass. Zn reduced Cd contents in roots and shoots, inhibited Cd translocation, and ameliorated Cd induced ultrastructural damage to organelles. Transcriptomic analysis revealed distinct gene expression patterns between genotypes, with WSBZ showing enhanced expression of metal transporters, antioxidant defense, and stress signaling genes. Significantly, cell wall related pathways were upregulated in WSBZ, particularly lignin biosynthesis genes (<em>PAL</em>, <em>C4H</em>, <em>4CL</em>, <em>COMT</em>, <em>CAD</em>/<em>SAD</em>), suggesting cell wall reinforcement as a key Cd tolerance mechanism. Zn induced upregulation of <em>ZIP</em> family transporters and downregulation of Cd transporters (<em>HvHMA</em>) aligned with reduced Cd accumulation. These findings provide comprehensive insights into molecular mechanisms of Zn mediated alleviation of Cd toxicity in barley, supporting improved agronomic practices for Cd contaminated soils.</div></div>","PeriodicalId":11758,"journal":{"name":"Environmental and Experimental Botany","volume":"237 ","pages":"Article 106183"},"PeriodicalIF":4.5,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Strigolactones enhance physiological and biochemical responses to salinity stress in tomato","authors":"Chiara Agliassa ,&nbsp;Cristina Morabito,&nbsp;Marco Prati,&nbsp;Francesca Secchi,&nbsp;Daniel Said-Pullicino,&nbsp;Nihan Sahin,&nbsp;Francesca Cardinale,&nbsp;Andrea Schubert","doi":"10.1016/j.envexpbot.2025.106181","DOIUrl":"10.1016/j.envexpbot.2025.106181","url":null,"abstract":"<div><div>Salinity stress is increasingly affecting plant crops, including vegetables. Strigolactones (SLs) are involved in modulating plant responses to osmotic stress. To unequivocally demonstrate the role of endogenous SLs under salt stress, we compared the responses of tomato plants silenced for the SL biosynthetic gene <em>CCD7</em> (<em>CAROTENOID CLEAVAGE DIOXYGENASE7</em>) with the relative wild-type and tested the effect of the specific SL analogue enantiomer GR24^5DS in stressed plants. Salt application increased the substrate electrical conductivity and leaf and root Na⁺ concentration, and decreased stem water potential. Salinity also restrained growth, reduced stomatal conductance, increased content of leaf proline, and enhanced activity of ROS-scavenging enzymes. SL-depleted plants were more susceptible to stress, showing stronger reduction of shoot growth than wild-type plants, and lower leaf concentration of proline, K⁺ and Mg²⁺. Leaf MDA concentration was higher in SL-depleted plants. Stomatal conductance and leaf soluble sugar concentration under stress were not affected by genetic SL depletion, but they respectively decreased and increased in leaves treated with GR24^5DS. Activity of ROS-scavenging enzymes in leaves was also modulated by GR24^5DS treatment. Our results unambiguously demonstrate that endogenous SLs contribute to improving tolerance to salt stress in tomato by affecting differential accumulation of ions and organic solutes, as well as responses to oxidative stress.</div></div>","PeriodicalId":11758,"journal":{"name":"Environmental and Experimental Botany","volume":"237 ","pages":"Article 106181"},"PeriodicalIF":4.5,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144229933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Proteases and the ubiquitin-proteasome system: Understanding protein degradation under heat stress in plants","authors":"Qianqian Fan ,&nbsp;David Jespersen","doi":"10.1016/j.envexpbot.2025.106174","DOIUrl":"10.1016/j.envexpbot.2025.106174","url":null,"abstract":"<div><div>Enhanced protein damage is a common consequence of heat stress in plants. One approach to removing these damaged proteins is to degrade them into amino acids via proteolytic machinery, such as proteases and the ubiquitin-proteasome system (UPS). Proteases are responsible for the breakdown of proteins inside the organelles, while the UPS conducts proteolysis mainly in the cytoplasm and nucleus by attaching polyubiquitin chains to the target proteins. This process is of particular importance in protecting cells against heat stress, as it prevents the accumulation of toxic aggregates, thereby reducing cellular aging and death while maintaining normal metabolic activities in plants. In this review, we focus on the roles of different protease families in plant responses to heat stress, including serine proteases, aspartic proteases, cysteine proteases, and metalloproteases. Additionally, we summarize and discuss the involvement of the UPS in thermotolerance, with special attention to two key components: E3 ligases and 26S proteasome. Furthermore, recent advances in ubiquitin-omics in the study of abiotic stress are highlighted, suggesting the potential of utilizing ubiquitin-omics as a powerful tool to identify more UPS substrates and to characterize their functions in heat stress response. Understanding of how protein degradation is regulated in response to heat stress provides a deeper insight into thermotolerance mechanisms in plants.</div></div>","PeriodicalId":11758,"journal":{"name":"Environmental and Experimental Botany","volume":"237 ","pages":"Article 106174"},"PeriodicalIF":4.5,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144212323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Leaf area modulates the chlorophyll fluorescence of Leymus chinensis in response to different drought scenarios","authors":"Jiatao Zhang ,&nbsp;Mai-He Li ,&nbsp;Josep Penuelas ,&nbsp;Jordi Sardans ,&nbsp;Lan Du ,&nbsp;Zuoqiang Yuan ,&nbsp;Yonghong Luo ,&nbsp;Yan Shen ,&nbsp;Ru Tian ,&nbsp;Na Li ,&nbsp;Jinbao Zhang ,&nbsp;Xinguo Han ,&nbsp;Mohsin Mahmood ,&nbsp;Haiyan Ren ,&nbsp;Zhuwen Xu","doi":"10.1016/j.envexpbot.2025.106175","DOIUrl":"10.1016/j.envexpbot.2025.106175","url":null,"abstract":"<div><div>The photosynthetic response of plants to drought has been widely explored, primarily through indoor cultivation or short-term physiological monitoring. However, studies linking the photosynthesis of forage with plant traits and production under various drought conditions, especially in the context of global precipitation changes, are limited. We conducted a four-year field experiment involving different precipitation treatments: ambient precipitation, intense drought (ID, precipitation exclusion during June), chronic drought (CD, reducing half precipitation amount from June to August), and reducing half precipitation frequency from June to August (RF, precipitation redistribution without changing precipitation amount). Our results showed that ID and CD significantly decreased the actual maximum photochemical quantum yield of PSII (ΦPSII) and maximum photochemical quantum yield (F_v/F_m), indicating a decline in photosynthetic capacity in <em>Leymus chinensis</em>. Meanwhile, the increase in regulatory energy dissipation quantum yield (Φ(NPQ)) highlighted enhanced photoprotection. Additionally, the CD increased the non-regulatory energy dissipation quantum yield (Φ(NO)), indicating that the photoprotection mechanism was insufficient to dissipate excess excitation energy, leading to photodamage at the reaction center. In contrast, under the RF scenario, plants effectively managed excess excitation energy by increasing Φ(NPQ), which prevented damage and maintained stable ΦPSII and F_v/F_m levels. Through regulating leaf area, drought increased Φ(NO) and decreased F_v/F_m. Although this strategy mitigated further photosynthetic damage, it also reduced photosynthetic efficiency and productivity of <em>L. chinensis</em>. This study represents the first exploration of patterns and mechanisms of plant photosynthetic processes in response to diverse drought scenarios. It underscores the crucial role of key plant traits, i.e. leaf area, in regulating photosynthetic responses amid changing precipitation patterns, and provides valuable information for grassland management and continuous forage supply.</div></div>","PeriodicalId":11758,"journal":{"name":"Environmental and Experimental Botany","volume":"237 ","pages":"Article 106175"},"PeriodicalIF":4.5,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144184895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exogenously applied MT enhanced cold tolerance in tea plants by increasing fatty acid desaturation and polyamine metabolism","authors":"Kunlong Su ,&nbsp;Xiangzong Luo ,&nbsp;Yaning Lv ,&nbsp;Ziwen Zhou ,&nbsp;Xueqiao Song ,&nbsp;Ping Yang ,&nbsp;Yeyun Li ,&nbsp;Xianchen Zhang","doi":"10.1016/j.envexpbot.2025.106173","DOIUrl":"10.1016/j.envexpbot.2025.106173","url":null,"abstract":"<div><div>MT (melatonin), an important bioactive small molecule, plays crucial roles in plant responses to temperature or water stress. However, the intrinsic mechanisms underlying the modulatory effects of MT on physiological reactions are less clear. In this study, the mechanism by which exogenous MT modulates fatty acid and polyamine (PA) metabolism in tea plants under cold stress was studied. Application of 100 μM MT significantly increased the cold tolerance of tea plants. Additionally, PCPA (MT metabolic inhibitor) further aggravated cold-induced cell damage. Consistent with the change in phenotype, foliar application of MT significantly increased fatty acid unsaturation and PA levels compared with those under cold stress. In contrast, the MT metabolic inhibitor PCPA further impaired fatty acid desaturation and polyamine levels under the PCPA + cold treatment compared with those under the cold treatment. To further elucidate the role of MT in regulating fatty acid and PA metabolism, <em>CsCOMT3</em> (a key enzyme in MT synthesis)-silenced tea leaves were generated via virus-induced gene silencing (VIGS). Compared with the control leaves, <em>CsCOMT3</em>-inhibited tea leaves presented greater wilting and weaker chlorophyll fluorescence, with lower levels of fatty acid unsaturation and PAs. Our results clearly revealed that MT application may be a feasible strategy to relieve cold injury in tea plants by enhancing fatty acid and PA metabolism.</div></div>","PeriodicalId":11758,"journal":{"name":"Environmental and Experimental Botany","volume":"236 ","pages":"Article 106173"},"PeriodicalIF":4.5,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144166368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unraveling the impact of nano-microscale polyethylene and polypropylene plastics on Nicotiana tabacum: Physiological responses and molecular mechanisms","authors":"Muhammad Arshad ,&nbsp;Zelin Zhou ,&nbsp;Yichi Zhang ,&nbsp;Shaojie Lin ,&nbsp;Muhammad Shoaib ,&nbsp;Huijuan Zhang ,&nbsp;Weichang Gao ,&nbsp;Jun Wu ,&nbsp;Feng Hu ,&nbsp;Huixin Li","doi":"10.1016/j.envexpbot.2025.106169","DOIUrl":"10.1016/j.envexpbot.2025.106169","url":null,"abstract":"<div><div>Plastics, as emerging pollutants, are increasingly found in soil, yet their systemic impact on soil ecosystems and plants remains poorly understood. This study explores the impacts of Polypropylene (PP) and Polyethylene (PE) microplastics, of varying sizes (20 nm and 100 µm) and doses (100 and 1000 mg/kg), on tobacco plant growth. Over a 55-d exposure period, PP and PE MPs exhibited a dose-dependent effect on the growth of tobacco plants. Notably, both PE and PP exposures significantly suppressed plant height, as well as fresh and dry biomass, with PP demonstrating greater toxicity. However, an exception was observed in the PP treatment, with marginal yet notable increase in growth indicators was recorded at a 20 nm particle size under high-concentration exposure. Further investigations revealed that MPs exposure at varying concentrations negatively impacted photosynthetic activity and triggered oxidative stress in leaves, with higher-dose treatments leading to a more pronounced accumulation of reactive oxygen species (ROS). To elucidate the molecular response mechanisms of tobacco leaves under PP-MP stress, a co-omics analysis was conducted. The analysis identified key pathways involved in the plant’s response to PP-MP stress, including plant hormone signal transduction, the MAPK signaling, flavonoid and phenylpropanoid biosynthesis, and photosynthesis antenna proteins. A comprehensive assessment of genes and metabolites revealed significant alterations in the biosynthesis of several plant hormones and flavonoids, including auxin, cytokinin, abscisic acid (ABA), and jasmonic acid. These findings suggest that plastics may impair photosynthetic efficiency, alter hormonal responses, and cause redox imbalance, ultimately affecting plant growth and resilience.</div></div>","PeriodicalId":11758,"journal":{"name":"Environmental and Experimental Botany","volume":"236 ","pages":"Article 106169"},"PeriodicalIF":4.5,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144116642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Variations in heterotrophic seedling growth parameters of 28 plant species and their relationships with seed traits","authors":"Elias Soltani ,&nbsp;Keyvan Maleki ,&nbsp;Nathalie Colbach ,&nbsp;Antoine Gardarin ,&nbsp;Jay Ram Lamichhane","doi":"10.1016/j.envexpbot.2025.106170","DOIUrl":"10.1016/j.envexpbot.2025.106170","url":null,"abstract":"<div><div>The timing of seedling emergence, influenced by heterotrophic growth, is a critical determinant for the competitive success of annual plants in arable cropping systems under temperate climates. While the heterotrophic growth phase is crucial for seedling establishment under field conditions, it has been much less explored compared to other growth phases. We address this gap by: i) analyzing the heterotrophic growth of primary seminal roots and shoots, focusing on their inter- and intra-specific diversity and growth synchrony, and ii) investigating the relationship between seed traits and heterotrophic growth parameters to explore how these traits influence growth dynamics. We synthesized data from 28 plant species, including 13 crops, 11 weeds, and four model plants, combining new datasets and published data. Inter-specific variation in heterotrophic root growth was assessed across all 28 species, while intra-specific variation in heterotrophic growth was examined in detail for seven species. We also explored the relationships between heterotrophic growth parameters (for both root and shoot) and seed traits, including seed mass and hydrothermal time model parameters — base water potential (Ψ_b) and base temperature (T_b) for germination. Our results showed that the maximum seedling length increased with an increase in seed mass or a decrease in either Ψ_b or T_b. The thermal time to mid-elongation, maximal shoot growth rate, and growth synchrony were significantly correlated to seed mass in weeds. This study enhances our ability to predict plant performance in agricultural systems, informs weed management strategies, and supports ecological forecasting in changing environments.</div></div>","PeriodicalId":11758,"journal":{"name":"Environmental and Experimental Botany","volume":"236 ","pages":"Article 106170"},"PeriodicalIF":4.5,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144135025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Folate production by Fusarium sp R2 alleviates water deficit stress in Fagopyrum cymosum","authors":"Meiqi Chen ,&nbsp;Ziqi Ding ,&nbsp;Chenglei Li ,&nbsp;Qingfeng Li ,&nbsp;Tongliang Bu ,&nbsp;Zizhong Tang ,&nbsp;Qi Wu ,&nbsp;Junzhen Wang ,&nbsp;Kaixuan Zhang ,&nbsp;Meiliang Zhou ,&nbsp;Hui Chen","doi":"10.1016/j.envexpbot.2025.106172","DOIUrl":"10.1016/j.envexpbot.2025.106172","url":null,"abstract":"<div><div>Endophytic fungi can promote host plant growth and enhance resistance during the interaction with the host. The diversity of endophytic fungi inhabiting <em>F. cymosum</em> (a long-used medicinal plant) is unclear, and may alleviate challenges of extreme heat and drought that further its endangered status. This study employed high-throughput sequencing technology to analyze the diversity of endophytic fungi in <em>F. cymosum</em> across different habitats and tissue types. Through correlation analysis and <em>in vitro</em> assays for drought tolerance and growth promotion, three fungal strains with strong drought-resistant and growth-promoting capabilities were identified: <em>Fusarium</em> sp. R2, <em>Ceratobasidium</em> sp. R14, and <em>Colletotrichum</em> sp. L5. The drought tolerance and growth-promoting effects of these strains were further validated by assessing the phenotypic traits and physiological indices of <em>F. cymosum</em> under both soil and hydroponic cultivation conditions. Additionally, non-targeted metabolomic analysis and exogenous folic acid application experiments confirmed that folate is a key metabolite through which <em>Fusarium</em> sp. R2 enhances the drought tolerance of <em>F. cymosum</em>. In conclusion, our study demonstrates that <em>F. cymosum</em> from arid regions harbors a richer diversity of drought-resistant endophytic fungi, and that the <em>Fusarium</em> sp. R2 strain enhances drought resistance by promoting folate metabolism. This discovery reveals part of the underlying mechanisms of drought-resistant fungal strains and holds significant implications for future research on endophytic fungi to addressing agricultural drought issues.</div></div>","PeriodicalId":11758,"journal":{"name":"Environmental and Experimental Botany","volume":"237 ","pages":"Article 106172"},"PeriodicalIF":4.5,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144365545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Jasmonates signalling plays a key role in modulating berry terpenes accumulation under water deficit conditions in Vitis vinifera L. (cv. Sangiovese)","authors":"Giacomo Palai ,&nbsp;Joshua VanderWeide ,&nbsp;Joana Pico ,&nbsp;Simone Diego Castellarin ,&nbsp;Claudio D’Onofrio","doi":"10.1016/j.envexpbot.2025.106171","DOIUrl":"10.1016/j.envexpbot.2025.106171","url":null,"abstract":"<div><div>Terpenes are among the most important aroma compounds synthesized in grape berries and vine water status affects their accumulation. Although previous studies showed that exogenous hormones applications significantly affected terpenes accumulation, the signalling network involved in regulating their biosynthesis under drought conditions is still unclear. This experiment imposed several deficit irrigation treatments, to elucidate the role of the endogenous hormones signalling network in regulating berry terpenes biosynthesis under water deficit conditions. Berry monoterpenes increased when water deficit was applied during the green or the lag-phase of berry development. Berry abscisic acid and jasmonic acid concentrations were significantly increased by water deficit, regardless of when it was imposed, whereas salicylic acid showed significant differences between irrigation treatments only at veraison. Under water deficit conditions, correlation analyses suggested that jasmonates may be key hormones regulating the biosynthesis of berry monoterpenes, especially in the glycosylated form. Vines subjected to water deficit before veraison showed increased jasmonic acid and methyl jasmonate levels in berries, with the highest monoterpene concentrations measured in the same berries at harvest. These results suggested that endogenous jasmonates may play a key role in water deficit induced signalling that regulates berry monoterpenes biosynthesis.</div></div>","PeriodicalId":11758,"journal":{"name":"Environmental and Experimental Botany","volume":"236 ","pages":"Article 106171"},"PeriodicalIF":4.5,"publicationDate":"2025-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144135026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}