Sofia Bitarishvili, Gilles Clement, Christian Meyer, Polina Volkova
{"title":"Metabolic profiling of Achillea millefolium from the Chernobyl exclusion zone reveals the adaptive strategies to low-dose chronic radiation exposure.","authors":"Sofia Bitarishvili, Gilles Clement, Christian Meyer, Polina Volkova","doi":"10.1016/j.plaphy.2025.109551","DOIUrl":"10.1016/j.plaphy.2025.109551","url":null,"abstract":"<p><p>The radionuclide contamination of the environment is an abiotic stress factor that influences biological systems. Plants growing in contaminated areas for many generations provide a unique opportunity to study adaptive strategies aimed at maintaining homeostasis under elevated radiation levels. Using non-targeted metabolomics approaches, we investigated the metabolomic profiles of Achillea millefolium L. plants from the Chernobyl exclusion zone. Amino acid biosynthesis pathways (arginine, glycine, serine, threonine, and proline) and metabolites associated with nitrogen mobilization, cell wall response to injury, photosynthetic efficiency, and defence responses were highly affected in plants from contaminated plots. Our results suggest that these changes may be involved in the adaptive strategies of A. millefolium plant to chronic radiation exposure.</p>","PeriodicalId":20234,"journal":{"name":"Plant Physiology and Biochemistry","volume":"220 ","pages":"109551"},"PeriodicalIF":6.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143067397","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}
A I Perfileva, B G Sukhov, T V Kon'kova, E I Strekalovskaya, K V Krutovsky
{"title":"Diversity of copper-containing nanoparticles and their influence on plant growth and development.","authors":"A I Perfileva, B G Sukhov, T V Kon'kova, E I Strekalovskaya, K V Krutovsky","doi":"10.1016/j.plaphy.2025.109575","DOIUrl":"10.1016/j.plaphy.2025.109575","url":null,"abstract":"<p><p>Copper (Cu) is an important microelement for plants, but in high concentrations it can be toxic. Cu-containing nanoparticles (Cu NPs) are less toxic, their use for plants is safer, more effective and economical than the use of Cu salts. This review presents detailed information on the chemical diversity of Cu NPs and various methods of their synthesis. The mechanisms of the effect of Cu NPs on plants are described in detail, and examples of research in this area are given. The main effects of Cu NPs on plants are reviewed including on their growth and development (organogenesis, mitosis, accumulation of biomass), biochemical processes (intensity of photosynthesis, antioxidant status and intensity of lipid peroxidation processes), gene expression, plant resistance to abiotic and biotic stress factors. The prospects of using Cu NPs as mineral fertilizers are shown by describing their stimulation effects on seed germination, plant growth and development, and on increase of plant resistance to stress factors. The protective effect of Cu NPs is often explained by their antioxidant activity. At the same time, there are a number of studies demonstrating the negative impact of Cu NPs on plant growth, development and the intensity of photosynthesis, depending on their concentration. Cu NPs have a pronounced antibacterial effect on bacterial phytopathogens of cultivated plants, as well as on a number of phytopathogenic fungi and nematodes. Thus, Cu NPs are promising agents for agriculture, while their effect on plants requires careful selection of optimal concentrations and comprehensive studies to avoid a toxic effect.</p>","PeriodicalId":20234,"journal":{"name":"Plant Physiology and Biochemistry","volume":"220 ","pages":"109575"},"PeriodicalIF":6.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143080861","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":"Function of key ion channels in abiotic stresses and stomatal dynamics.","authors":"Yuanyuan Zuo, Asad Abbas, Seidat Oluwadamilola Dauda, Chen Chen, Jayakumar Bose, Michelle Donovan-Mak, Yuanyuan Wang, Jing He, Peng Zhang, Zehong Yan, Zhong-Hua Chen","doi":"10.1016/j.plaphy.2025.109574","DOIUrl":"10.1016/j.plaphy.2025.109574","url":null,"abstract":"<p><p>Climate changes disrupt environmental and soil conditions that affect ionic balance in plants, presenting significant challenges to their survival and productivity. Membrane transporters are crucial for maintaining ionic homeostasis and regulating the movement of substances across plasma and organellar membranes, particularly under abiotic stresses. Among these abiotic stress-responsive mechanisms, stomata are critical for regulating water loss and carbon dioxide uptake, reflecting a plant's ability to respond and adapt to abiotic stresses effectively. This review highlights the role of ion transporters, including both anion and cation transporters in plant abiotic stress responses. It explores the interplay between different ion channels and regulatory components that enable plants to withstand key abiotic stresses such as drought, salinity, and heat. Moreover, we emphasized the contributions of three essential types of ion channels - potassium, anion, and calcium to abiotic stress-related stomatal regulation. These ion channels orchestrate complex signaling networks that allow plants to modulate stomatal behavior and maintain physiological balance under adverse conditions. This article provides valuable molecular and physiological insights into the mechanisms of ion transport and regulation for plants to adapt to environmental challenges. Thus, this review offers a useful foundation for developing innovative strategies to enhance crop resilience and performance in an era of increasingly unpredictable and harsh climates.</p>","PeriodicalId":20234,"journal":{"name":"Plant Physiology and Biochemistry","volume":"220 ","pages":"109574"},"PeriodicalIF":6.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143190239","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}
Ambika Rajendran, Ayyagari Ramlal, Amooru Harika, Sreeramanan Subramaniam, Dhandapani Raju, S K Lal
{"title":"Waterlogging stress mechanism and membrane transporters in soybean (Glycine max (L.) Merr.).","authors":"Ambika Rajendran, Ayyagari Ramlal, Amooru Harika, Sreeramanan Subramaniam, Dhandapani Raju, S K Lal","doi":"10.1016/j.plaphy.2025.109579","DOIUrl":"10.1016/j.plaphy.2025.109579","url":null,"abstract":"<p><p>An excess of water is more harmful to plant growth, root growth and the uniformity of the plant population than a water deficit. Water is a crucial factor in the three basic stages of soybean development: germination, emergence and flowering/seed filling. Waterlogging is one of the biggest constraints to crop production and productivity in India and can occur at any stage in soybean. However, seeds and seedlings are damaged by waterlogging resulting in a significant reduction in grain yield. Seed yield and growth are significantly correlated at the seedling stage. In addition, the plant is under constant pressure due to changing environmental conditions and has difficulty withstanding these harsh, unpredictable and difficult situations. Membrane transporters are essential and play fundamental roles during waterlogging thereby facilitating cellular homeostasis and gaseous exchange, which support plant growth and development. This review highlights the genetic basis and mechanism of waterlogging tolerance in soybean and the role of climate in influencing the genetic makeup of the crop, paving the way for further development of improved soybean varieties. Simultaneously, the article highlights membrane transporters' importance in water-mediated stress in soybeans.</p>","PeriodicalId":20234,"journal":{"name":"Plant Physiology and Biochemistry","volume":"220 ","pages":"109579"},"PeriodicalIF":6.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143080863","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}
Dan Cao , Juan Li , Linlong Ma , Yanli Liu , Jianan Huang , Xiaofang Jin
{"title":"Unlocking tea's potential: The synergistic role of selenium and phosphorus in enhancing tea quality","authors":"Dan Cao , Juan Li , Linlong Ma , Yanli Liu , Jianan Huang , Xiaofang Jin","doi":"10.1016/j.plaphy.2025.109670","DOIUrl":"10.1016/j.plaphy.2025.109670","url":null,"abstract":"<div><div>Selenium (Se) deficiency is harmful for human health, and producing Se-enriched tea is an effective way to supplement Se. This study systematically analyzed the effects of Se-phosphorus (P) interaction on the absorption and transport of Se and the physiological and biochemical indicators of tea plants. The Se was applied in the form of sodium selenite at three concentrations (0, 50, 100 μmol L<sup>−1</sup>), and P was applied as sodium dihydrogen phosphate at three concentrations (0.5, 1.5, and 10.5 mmol L<sup>−1</sup>). At the same Se concentrations (50.00 μmol L<sup>−1</sup>, 500.00 μmol L<sup>−1</sup>), P application could increase the Se content in roots (<em>p</em> < 0.05), while the Se transport coefficient decreased with increasing P concentrations. Gene expression analysis suggested that <em>CsPht1;2a</em> and <em>CsPht1;3a</em> were pivotal in selenite uptake in tea plants. At elevated P concentrations (10.50 mmol L<sup>−1</sup>), the application of 50.00 μmol L<sup>−1</sup> Se significantly increased the levels of chlorophyll <em>b</em> and total chlorophyll in the leaves (<em>p</em> < 0.05), whereas a concentration of 500.00 μmol L<sup>−1</sup> Se led to a marked increase in carotenoid content (<em>p</em> < 0.05). Under conditions of moderate P concentration (1.50 mmol L<sup>−1</sup>), Se concentrations of 50.00 μmol L<sup>−1</sup> and 500.00 μmol L<sup>−1</sup> were found to exert a significant positive effect on GSH content, as well as the enzymatic activities of SOD, POD, and APX (<em>p</em> < 0.05). At consistent P concentrations (0.50 mmol L<sup>−1</sup>, 10.50 mmol L<sup>−1</sup>), the application of Se at 500.00 μmol L<sup>−1</sup> significantly elevated the content of tea polyphenols in the leaves (<em>p</em> < 0.05). These findings indicated that appropriate P concentrations could promote the absorption and transport of Se in tea plants, thus improving tea quality.</div></div>","PeriodicalId":20234,"journal":{"name":"Plant Physiology and Biochemistry","volume":"221 ","pages":"Article 109670"},"PeriodicalIF":6.1,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143453130","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}
Long-Yan Chu , Ting Liu , Peng-liang Xia , Jian-Ping Li , Zi-Ru Tang , Yu-Ling Zheng , Xiang-Ping Wang , Jian-Min Zhang , Ru-Bing Xu
{"title":"NtWRKY28 orchestrates flavonoid and lignin biosynthesis to defense aphid attack in tobacco plants","authors":"Long-Yan Chu , Ting Liu , Peng-liang Xia , Jian-Ping Li , Zi-Ru Tang , Yu-Ling Zheng , Xiang-Ping Wang , Jian-Min Zhang , Ru-Bing Xu","doi":"10.1016/j.plaphy.2025.109673","DOIUrl":"10.1016/j.plaphy.2025.109673","url":null,"abstract":"<div><div>WRKY transcript factors(TFs) play crucial roles in plant response to biotic and abiotic stresses. However, how WRKY TFs response to aphid feeding are still poorly understood. Herein, <em>NtWRKY28,</em> a tobacco WRKY transcript factor gene induced by <em>Myzus persicae</em> feeding, was identified, and its regulatory roles were characterized in response to <em>Myzus persicae</em> feeding. The results showed that <em>NtWRKY28</em> expression was induced by infestation of <em>Myzus persicae</em>, mechanical injury and MeJA treatment in tobacco plants. Overexpression of <em>NtWRKY28</em> enhanced tobacco plant resistance to <em>Myzus persicae</em>, while silence of <em>NtWRKY28</em> rendered tobacco plants more susceptible to infestation of <em>Myzus persicae</em>. Additionally, <em>NtWRKY28</em> promoted the content of flavonoids and lignin through positively modulating the expression of genes involved in phenylpropanoid pathway, flavonoid and lignin biosynthesis. Our results not only provide new insights into the mechanism that WRKY TFs regulate tobacoo resistance to aphids, but also lay a theoretical foundation for breeding new tobacco varieties against aphids.</div></div>","PeriodicalId":20234,"journal":{"name":"Plant Physiology and Biochemistry","volume":"221 ","pages":"Article 109673"},"PeriodicalIF":6.1,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465452","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}
Ines Karmous , Wade H. Elmer , Nubia Zuverza-Mena , Shital Vaidya , Samir Tlahig , Jules Scanley , Anuja Bharadwaj , Jason C. White , Christian O. Dimkpa
{"title":"Plant-engineered ZnO and CuO nanoparticles exhibit pesticidal activity and mitigate Fusarium infestation in soybean: A mechanistic understanding","authors":"Ines Karmous , Wade H. Elmer , Nubia Zuverza-Mena , Shital Vaidya , Samir Tlahig , Jules Scanley , Anuja Bharadwaj , Jason C. White , Christian O. Dimkpa","doi":"10.1016/j.plaphy.2025.109672","DOIUrl":"10.1016/j.plaphy.2025.109672","url":null,"abstract":"<div><div>Herein, CuO and ZnO nanoparticles (NPs) were biogenically synthesized using plant (<em>Artemisia vulgaris</em>) extracts. The biogenic NPs were subsequently evaluated <em>in vitro</em> for antifungal activity (200 mg/L) against <em>Fusarium virguliforme</em> (FV; the cause of soybean sudden death), and for crop protection (200–500 mg/L) in FV-infested soybean. ZnONPs exhibited 3.8-, 2.5-, and 4.9 -fold greater <em>in vitro</em> antifungal activity, compared to Zn or Cu acetate salt, the <em>Artemisia</em> extract, and a commercial fungicide (Medalion Fludioxon), respectively. The corresponding CuONP values were 1.2-, 1.0-, and 2.2 -fold, respectively. Scanning electron microscopy (SEM) revealed significant morpho-anatomical damage to fungal mycelia and conidia. NP-treated FV lost their hyphal turgidity and uniformity and appeared structurally compromised. ZnONP caused shriveled and broken mycelia lacking conidia, while CuONP caused collapsed mycelia with shriveled and disfigured conidia. In soybean, 200 mg/L of both NPs enhanced growth by 13%, compared to diseased controls, in both soil and foliar exposures. Leaf SEM showed fungal colonization of different infection sites, including the glandular trichome, palisade parenchyma, and vasculature. Foliar application of ZnONP resulted in the deposition of particulate ZnO on the leaf surface and stomatal interiors, likely leading to particle and ion entry via several pathways, including ion diffusion across the cuticle/stomata. SEM also suggested that ZnO/CuO NPs trigger structural reinforcement and anatomical defense responses in both leaves and roots against fungal infection. Collectively, these findings provide important insights into novel and effective mechanisms of crop protection against fungal pathogens by plant-engineered metal oxide nanoparticles, thereby contributing to the sustainability of nano-enabled agriculture.</div></div>","PeriodicalId":20234,"journal":{"name":"Plant Physiology and Biochemistry","volume":"221 ","pages":"Article 109672"},"PeriodicalIF":6.1,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143453129","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}
Paula Virginia Fernández , María Eugenia Schloymann , Marina Ciancia
{"title":"From root to leaf: Cell walls of the halophytic grass Distichlis laxiflora comprise highly substituted glucuronoarabinoxylans","authors":"Paula Virginia Fernández , María Eugenia Schloymann , Marina Ciancia","doi":"10.1016/j.plaphy.2025.109663","DOIUrl":"10.1016/j.plaphy.2025.109663","url":null,"abstract":"<div><div>Halophytic plants develop their life cycle in high salinity conditions. Several physiological responses explain this, but little was explored regarding the role of their cell walls (CW). In grasses, which have small amounts of pectins, hemicelluloses should show the greatest effects of salt stress. In this work, CW from roots, shoots, and leaves from <em>Distichlis laxiflora</em> collected in spring (the regrowth period) in halophytic (H) and mesophytic (M) meadows were studied. This is a first approach to the CW of halophytic grasses, with an evaluation of differences between organs, and between sites with distinct salinity. The main alkaline fractions contain glucuronoarabinoxylans (GAX) as major component, followed by small amounts of pectins and β-glucans. Analysis of their composition showed that polysaccharides from leaves of both sites differ little, while greater differences (involving xylose, glucuronic acid, glucose, and arabinose) are found within roots. If the alkaline extracts and the final residue are considered together, both leaves and shoots have ≥50% of GAX and 20–30% cellulose in their CW, while roots show similar amounts of GAX and cellulose (35–40% of each). Additionally, GAX from roots show a higher degree of substitution with glucuronic acid, regarding the other organs and GAX reported for other grasses, and considerable amounts of 4-linked xylopyranose residues disubstituted with single ramifications of α-L-arabinofuranose. As the first barrier in contact with soil salinity, roots respond through the modification of the classical structure of GAX, which would be more suitable to entrap Na<sup>+</sup> ions, by the presence of more negative charges.</div></div>","PeriodicalId":20234,"journal":{"name":"Plant Physiology and Biochemistry","volume":"221 ","pages":"Article 109663"},"PeriodicalIF":6.1,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143453126","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}
Xiliang Song , Yang Liu , Shuai Liu , Jun Li , Yi Wang , Yu Zhang , Wenjing Song
{"title":"Proteomic and physiological analyses reveal the mechanisms through which melatonin ameliorates heat stress-induced photoinhibition in Nicotiana tabacum","authors":"Xiliang Song , Yang Liu , Shuai Liu , Jun Li , Yi Wang , Yu Zhang , Wenjing Song","doi":"10.1016/j.plaphy.2025.109665","DOIUrl":"10.1016/j.plaphy.2025.109665","url":null,"abstract":"<div><div>Raising temperature-induced heat stress under climate warming scenarios has become a predominant threat to crop growth and productivity. As a pleiotropic signaling molecule, melatonin offers an innovative solution for enhancing plant thermotolerance, although its mechanisms, particularly regarding leaf photosynthesis, remain insufficiently understood. This study employed proteomic and physiological analyses to reveal the potential benefits of endogenous melatonin in alleviating heat stress-induced damage to the photosynthetic performance of <em>Nicotiana tabacum</em> plants. Foliar application of melatonin at 50 μM effectively ameliorated heat stress induced-photoinhibition by preventing pigment degradation, enhancing Rubisco and FBPase activities, stimulating RuBP carboxylation and regeneration, and improving light energy transfer and utilization.The changes resulted in increased light-saturated photosynthesis rate and photochemical efficiency. Melatonin application also elevated starch and soluble sugar contents by stimulating photosynthetic carbon assimilation and suppressing dark respiration, thereby counteracting the harmful impact of heat stress. Proteomic analysis revealed that melatonin significantly upregulated the expression of two key enzymes (glutamyl-tRNA reductase and monomethyl ester aerobic oxidative cyclase) involved in the chlorophyll biosynthetic pathway, enhanced the expression of three proteins (PSII cytochrome <em>b</em>559, protein H, and 10 kDa polypeptide) related to the PSII photochemical reaction, stimulated the expression of fructose-1,6-bisphosphatase linked to the Calvin cycle, and increased the expression of granule-bound starch synthase related to carbohydrate metabolism, thereby positively mediating the photodamage induced by heat stress to plant photosynthetic performance. These results highlight the potential of endogenous melatonin application as an effective approach for boosting crop photosynthetic performance and thermotolerance to global warming.</div></div>","PeriodicalId":20234,"journal":{"name":"Plant Physiology and Biochemistry","volume":"221 ","pages":"Article 109665"},"PeriodicalIF":6.1,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143444937","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}
Wenrui Li , Jiachen Yu , Ruihong Wang , Yanyan Jia , Lulu Xun , Zongsuo Liang
{"title":"Overexpression of SmGRAS5 enhances tolerance to abiotic stresses in Salvia miltiorrhiza","authors":"Wenrui Li , Jiachen Yu , Ruihong Wang , Yanyan Jia , Lulu Xun , Zongsuo Liang","doi":"10.1016/j.plaphy.2025.109669","DOIUrl":"10.1016/j.plaphy.2025.109669","url":null,"abstract":"<div><div>Abiotic stresses limit crop growth and yield. GRAS transcription factors (TFs) are plant-specific TFs that play an important role in many plant processes, including abiotic stress response. However, there are few studies on the involvement of the <em>GRAS</em> gene in stress response in <em>Salvia miltiorrhiza</em>. This study identified a GRAS TF from <em>S. miltiorrhiza</em>, named <em>SmGRAS5</em>, which belongs to the scarecrow-like 3 (SCL3) group involved in root formation. Transcriptome analysis showed that the <em>SmGRAS5</em> overexpressed (OE) lines of <em>S. miltiorrhiza</em> expressed many genes related to stress response and secondary metabolism<em>. SmGRAS5</em> was strongly induced by drought and high salinity. Overexpression of <em>SmGRAS5</em> could improved drought and salt tolerance in transgenic <em>S. miltiorrhiza</em> plants by regulating stress-related genes. Physiological tests showed that transgenic plants had higher chlorophyll content, photosynthetic capacity, superoxide dismutase (SOD), peroxidase (POD), and catalase activities (CAT), which enhanced plant drought resistance and salt tolerance. In addition, the content of tanshinones in transgenic <em>SmGRAS5</em> was significantly increased, and most genes of related biosynthetic pathways were up-regulated. These results may provide a candidate gene involved in abiotic stress response and secondary metabolism and provide a theoretical basis for elucking the mechanisms of SmGRAS5 in abiotic stress response of <em>S. miltiorrhiza</em>.</div></div>","PeriodicalId":20234,"journal":{"name":"Plant Physiology and Biochemistry","volume":"221 ","pages":"Article 109669"},"PeriodicalIF":6.1,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143453128","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}