Acta Physiologiae Plantarum最新文献

{"title":"Foliar application of Pluronic P85-grafted single-walled carbon nanotubes induces thylakoid membrane structural remodeling","authors":"Nia Petrova,&nbsp;Svetla Todinova,&nbsp;Petar Petrov,&nbsp;Violeta Velikova,&nbsp;Sashka Krumova","doi":"10.1007/s11738-023-03614-8","DOIUrl":"10.1007/s11738-023-03614-8","url":null,"abstract":"<div><p>Moderation and optimization of the photosynthetic function of higher plants by nanomaterials is under intensive investigation, but remain still far from practical utilization. We have previously demonstrated that foliar spraying of Pluronic P85-grafted single-walled carbon nanotubes (P85-SWCNT) affects the functionality and structural organization of the photosynthetic thylakoid membranes in pea plants. In the present work, we further study in more details the structural changes in the photosynthetic machinery induced by P85-SWCNT treatment. Evidences are provided that P85-SWCNT induces thylakoid membrane remodeling, namely—partial membrane unstacking, thermal stabilization of the major light-harvesting complex of photosystem II and its migration toward the stroma lamellae. The observed effects are most pronounced for the highest used concentration of 300 mg/L P85-SWCNT. Our results reveal that P85-SWCNT in concentrations below 300 mg/L is an interesting object for further investigation of the potential application of nanomaterials in plant science, e.g., as nanocarriers of beneficial substances reaching the photosynthetic apparatus.</p></div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71908778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mitigating drought stress by plant-derived biostimulant in Arbequina olive (Olea europeae L.) cultivar conducted in super high density","authors":"Walid Abidi,&nbsp;Rawaa Akrimi,&nbsp;Mohamed Gouiaa","doi":"10.1007/s11738-023-03613-9","DOIUrl":"10.1007/s11738-023-03613-9","url":null,"abstract":"<div><p>The climate change has negative effects on crop production worldwide. The scarcity of water in semi-arid zones proper the use of biostimulants to improve yield and quality parameters. The present work evaluated the impact of exogenous spraying with moringa leaves aqueous extract (MLE 5%) on agro-physiological behavior of the olive cultivar “Arbequina” conducted in super high density during two growing seasons (2019–2020). The experiment consisted of six treatments (T0 = 100% ETc; T1 = 100% ETc + 5% MLE; T2 = 75% ETc; T3 = 75% ETc + 5% MLE; T4 = 50% ETc; and T5 = 50% ETc + 5% MLE). Twelve trees were considered for each treatment and distilled water was applied as control for the MLE treatment. Vegetative growth, yield, water status, antioxidants, oil parameters, leaf gas exchange, and chlorophyll fluorescence were analyzed. Results showed that the net photosynthesis (Pn), stomatal conductance (gs), and evapotranspiration (E) varied significantly in response to drought stress and MLE treatments. The two water regimes (100% and 75% ETc) showed similar behavior regarding the agro-physiological responses to the applied treatments, whereas the 50% ETc water regime significantly affected the studied parameters. The MLE was effective in mitigating the water stress on olive trees, by improving vegetative growth, yield, photosynthesis, and water productivity. It appears that trees grown under 75% ETc water regime were more responsive to 5% MLE, as they exhibit the highest yield (8.4 kg/tree), oil content (28.3%), and water use efficiency, whereas 25% of irrigation water was saved.</p></div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50035035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Drought and salinity synergistically modulate the physiology and growth pattern of the facultative halophyte red mangrove (Rhizophora mangle)","authors":"Emmanuel Iwuala,&nbsp;Okon Unung,&nbsp;Modinat Adekoya,&nbsp;Isiaka Abiodun,&nbsp;Victor Odjegba,&nbsp;Abiodun Ajiboye,&nbsp;Ethel Phiri,&nbsp;Afroz Alam","doi":"10.1007/s11738-023-03609-5","DOIUrl":"10.1007/s11738-023-03609-5","url":null,"abstract":"<div><p>Under natural conditions, most plants are exposed to a plethora of stress factors like salinity and drought which can act in synergy to undermine their growth responses. The red mangrove, <i>Rhizophora mangle</i>, is endemic to estuarine ecosystems and is prone to salinity and drought stresses under changing climatic conditions<b>.</b> This work aimed at elucidating the combined impact of drought and salinity on the growth pattern and physiology of red mangroves. The use of factorial experimental layout in a completely randomised design was employed in the study to impose either a single or a combination of different drought regimes and levels of salt stress on red mangrove plants, which culminated in nine treatments to uncover both the combined and individualistic impact of salinity and drought stresses on the red mangrove. Morphological, physiological and biochemical responses of the facultative halophyte were evaluated following the imposition of salinity and drought stress. The results revealed that application of both salinity and drought stresses simultaneously on red mangrove seedlings led to a decline in plant growth indices, chlorophyll content, transpiration rate [E], stomatal conductance [gs] and net photosynthesis rate [PN], as compared to other plants exposed to single stress treatment. Besides, combined salinity and drought treatment increased oxidative stress rapidly, thereby increasing malondialdehyde (MDA) and hydrogen peroxide (H₂O₂) accumulation. However, the red mangrove exhibited a certain level of stress resistance to the simulated salinity and drought stresses which was attributable to the mechanisms such as hyperactivation of catalase (CAT) and superoxide dismutase (SOD) activities and accumulation of osmoprotectants (soluble sugar, Na⁺ and Cl⁻). The results recorded indicate that gas exchange attributes, photosynthetic content, CAT and APX activities and MDA are reliable screening parameters for salinity and drought stress in the plants because they have roles in the level of combined stress tolerance exhibited by the red mangrove.</p></div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2023-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50012293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Screening of distributed horsemint (Mentha longifolia L.) accessions for agricultural drought tolerance based on biological responses","authors":"Alireza Moshrefi-Araghi,&nbsp;Hossein Nemati,&nbsp;Majid Azizi,&nbsp;Javad Hadian,&nbsp;Nasrin Moshtaghi,&nbsp;Mahmood Shoor","doi":"10.1007/s11738-023-03605-9","DOIUrl":"10.1007/s11738-023-03605-9","url":null,"abstract":"<div><p><i>Mentha longifolia</i> L. (horsemint) is one of the most famous wild perennial herbs of the Lamiaceae family, which has broad usage in therapeutic and pharmaceutical services. In this research, screening of twenty Mentha longifolia L. accessions was assessed according to the physio-chemical variability under low water irrigation. The investigation was a split plot arranged in a completed randomized block design in three replications with two water treatments of full irrigation (100% field capacity as control) and deficit irrigation (60% FC). The interaction effects of water deficit and accessions indicated that drought stress meaningfully (<i>P</i> ≤ 0.01) altered physiological parameters such as CGR, NAR, RGR, LAR, SLA electrolyte leakage, element content, stomatal conductivity, essential oil content, antioxidant activities, proline, relative water content, chlorophyll, and carotenoid content. The main volatile components as 1,8-cineole, (Z)-β-ocimene, menthon, menthol, pulegone, trans-piperitone epoxide, piperitenone, and piperitone oxide were analyzed. The HPLC analysis disclosed the existence of rosmarinic acid, caffecic acid, 2,3-dihydroxybenzoic acid, 3,4-dihydroxybenzoic acid, ferulic acid, chlorogenic acid, vanillic acid, p-coumaric acid, and rutin as predominant phenolic and flavonoid compounds in horsemint accessions. Results showed that the drought stress not only enhanced the values of rosmarinic acid, ferulic acid, caffeic acid, rutin, 2,3-dihydroxybenzoic acid, and 3,4-dihydroxybenzoic acid but also triggered <i>p</i>-coumaric acid that did not exist in some accessions under full irrigation conditions. However, the findings were affected by the accession type. Cluster analysis based on all the traits categorized the accessions into two main groups, in which the comparisons of the dendrograms between normal and water deficit conditions showed 0.23 entanglement. The analysis showed that ML13, ML17, and ML2 accessions could be offered as tolerant accessions. Regarding the various reactions to drought stress and the variability among the accessions, the results of the current research could be a primary stage in recognizing and obtaining high-yield, drought-tolerance, and elite accessions and can promote horsemint breeding programs and domestication.</p></div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11738-023-03605-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50010423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simulated microgravity improved secondary metabolism in Physalis alkekengi via influencing gene expression and DNA methylation in a light quality-dependent manner","authors":"Farzad Alani,&nbsp;Alireza Iranbakhsh,&nbsp;Mostafa Ebadi,&nbsp;Halimeh Hassanpour,&nbsp;Azadeh Hekmat","doi":"10.1007/s11738-023-03596-7","DOIUrl":"10.1007/s11738-023-03596-7","url":null,"abstract":"<div><p>This study aimed to investigate the effect of microgravity and light spectral composition on DNA methylation levels and the expression of genes responsible for secondary metabolism in <i>Physalis alkekengi</i>. Seedlings were exposed to the microgravity treatments under two different light conditions, including white and red + blue (R + B). The microgravity treatments were more capable of rapidly influencing growth performance than the light spectrum quality. The microgravity treatment up-regulated the expression of the 7-sterol Δ7 reductase (DWF5) gene. The highest expression of 4–1-deoxy-<span>d</span>-xylulose-5-phosphate reductoisomerase (DXR) gene was recorded in the microgravity-treated seedlings grown under the white conditions. Microgravity treatment and R + B irradiation synergistically stimulated the 3–1-deoxy-<span>d</span>-xylulose-5-phosphate synthase 2 (DXS2) gene. The expression pattern of the 1-hydroxy-3-methylglutaryl coenzyme A reductase (HMGR) and 2-sterol C-7,8 isomerase (HYD1) genes was similar to that of the DXS2 gene. The transcription of the mevalonate kinase (MK) gene was slightly changed in response to the microgravity and light composition. In the microgravity-treated seedlings, the 5-squalene synthase (SQS) gene displayed a similar upward trend, whereas the R + B radiation conditions contributed to the slight down-regulation of this gene. The microgravity factor was more effective in generating epigenetic responses in terms of DNA methylation than the light spectrum quality. However, light conditions affected the molecular responses of the plant to the microgravity factor. The microgravity treatment under both radiation conditions also increased the concentration of soluble phenols and proline in leaves. These findings refer to the high efficacy of simulated microgravity conditions to up-regulate the secondary metabolism in medicinal plants.</p></div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50007395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seed soaking with salicylic acid improves alfalfa (Medicago sativa L.) germination by involving the antioxidation system","authors":"Nan Xu,&nbsp;Xin Sui,&nbsp;Zhao Chen,&nbsp;JunPeng Niu,&nbsp;ZhiPeng Guo,&nbsp;QuanZhen Wang","doi":"10.1007/s11738-023-03600-0","DOIUrl":"10.1007/s11738-023-03600-0","url":null,"abstract":"<div><p>Cultivation of alfalfa (<i>Medicago sativa</i> L.), one of the most extensive forages around the world, is important for animal feeding and ecological conservation in Northwest China. Seed soaking with salicylic acid (SA) facilitates germination and improves morphological and physiological traits. Thus, it is necessary to investigate the effect of SA on alfalfa seed germination, as it may be beneficial for seedling establishment and field production. In this study, the influence of SA at different concentrations (C: 0, 0.4, 0.8, and 1.2 mM) and seed soaking times (ST: 8, 16, 24, and 32 h) on alfalfa cultivars (CV: Eureka + , WL525HQ, Central, Kehan) was investigated using an orthogonal experimental design. The results showed that the effect was dependent on C, CV, and ST. In addition, SA enhanced seed germination by improving seed vigor, reducing lipid peroxidation, promoting osmotic regulation, and enhancing antioxidant levels. More importantly, model analysis revealed that 0.77 mM SA and 25.5 h ST were the optimal seed soaking conditions.</p></div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50053909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Methyl jasmonate elicitation on increased production of Precocene II from adventitious root cultures of Ageratum conyzoides L. and evaluation of its antioxidant and cytotoxic activities","authors":"Selvaraj Vasantharani,&nbsp;Ramaraj Thirugnanasampandan","doi":"10.1007/s11738-023-03607-7","DOIUrl":"10.1007/s11738-023-03607-7","url":null,"abstract":"<div><p><i>Ageratum conyzoides</i> L. (Asteraceae) is a weed which is commonly distributed in all types of land. This weed plant is known to have antiinflammatory, antimicrobial, antiasthmatic properties and essential oil with insecticidal, antiprotozoan, antibacterial, and antioxidant activities. The main objective of this study is to increase the production of Precocene II in the leaf derived root culture of<i> A. conyzoides</i> elicited with 100 µM methyl jasmonate (MeJA). Out of three auxins (IBA, IAA, and NAA) tested for root induction from leaf explant, MS medium fortified with 4.9 µM IBA favored better root formation (15.06 ± 1.27) after 3 weeks of culture. High-Performance Liquid Chromatography (HPLC) analysis of in vitro roots developed on 4.9 µM IBA was elicited with 100 µM MeJA resulted in the four fold increased production of bioactive compound, Precocene II than nonelicited roots. Precocene II showed better in vitro antioxidant activity against various test systems under in vitro. In addition, Precocene II showed better cytotoxic and apoptosis inducing potential against cervical cancer cell line (HeLa). Both antioxidant and cytotoxic activities of Precocene II were higher than elicited and nonelicited roots. Based on the results, it is understand that MeJA elicitation would be the good choice for increased production of biologically important compound, Precocene II from the root cultures of <i>A. conyzoides</i>. Moreover, the weed plant may be considered as a real source of valuable phytocompound.</p></div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11738-023-03607-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50052294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Infrared imaging indices for genotype screening in plant drought responses","authors":"Venkatesha Kurumayya","doi":"10.1007/s11738-023-03604-w","DOIUrl":"10.1007/s11738-023-03604-w","url":null,"abstract":"<div><p>The crucial obstacle in the research of plant science is to distinguish between superior genotypes and its selection. Machine vision can recognize the better genotype precisely, effortlessly and in asymptomatic manner. Genotype differentiation based on machine vision by using thermal imaging parameters is evaluated and elaborated in this article. The main objective of this study is to assess better performance and select superior genotypes based on the common thermal indicators. Mungbean and chickpea crops were studied and measured in greenhouse conditions with well-watered and water stress treatments. An algorithm is developed for extracting parameters from thermal images and implemented in a Python tool using OpenCV (cv2), Pandas packages. The genotypes of the crops were contrasted for drought tolerance to be able to differentiate drought responses with thermal imaging. The result of the experiments express that crops are differentiated between treatments and discriminated among genotypes within a treatment. These results were validated with the soil moisture data, which was collected on simultaneous day of the image captured.</p></div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11738-023-03604-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50052295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Overcoming seed dormancy of Taxus baccata L. by embryo rescue leads to germination and seedling growth","authors":"Junou He,&nbsp;Bruno Trevenzoli Favero,&nbsp;Xuefei Chen,&nbsp;Renate Müller,&nbsp;Henrik Lütken","doi":"10.1007/s11738-023-03611-x","DOIUrl":"10.1007/s11738-023-03611-x","url":null,"abstract":"<div><p>Hairy roots generated by <i>Rhizobium rhizogenes-</i>mediated transformation of yew (<i>Taxus</i> spp.) is a promising approach to enhance production of Taxol^® (paclitaxel), which is one of the most effective anticancer drugs. As a prerequisite, it is pivotal to successfully produce <i>Taxus</i> seedlings for transformation. However, the deep dormancy of <i>Taxus</i> seeds leads to extreme difficulties in seed germination. Therefore, embryo rescue has been used to break the dormancy of <i>Taxus baccata</i> seeds, thereby producing seedlings for transformation. In the current study, a successful strategy of embryo rescue was to sterilize the surface of <i>T. baccata</i> seeds collected from the field at two different maturity stages (low and high). The strategy resulted in 100% germination rate, but it was worth noting that not all germinated embryos grew into fully developed plants. As a result, the present experiment introduced an innovative indicator—fully developed seedling index—to describe the growth of seedlings developed by germinated embryos. Collectively, the data revealed that 21 ± 4% of the seedlings eventually grew into fully developed plants. Regarding the development of the seedlings, the fully developed seedling index increased initially along with seedling growth, reaching a peak after 2 weeks. Subsequently, the fully developed seedling index from low maturity seeds and high maturity seeds began to decrease until it stabilized after 4 weeks and 7 weeks, respectively. Consequently, the new findings proved helpful to select <i>T. baccata</i> seeds with appropriate maturity, hence developing a reliable technique to produce viable seedlings for a transformation pipeline.</p></div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11738-023-03611-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50052293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of nano-silicon dioxide on minerals, antioxidant enzymes, and growth in bitter gourd seedlings under cadmium stress","authors":"Hongyan Sun,&nbsp;Bo Zhang,&nbsp;Zhijiang Rong,&nbsp;Songjie He,&nbsp;Yifan Gao,&nbsp;Jia Yu,&nbsp;Qingmei Zhang","doi":"10.1007/s11738-023-03610-y","DOIUrl":"10.1007/s11738-023-03610-y","url":null,"abstract":"<div><p>Heavy metal pollution has significant toxicity to plants, so it is necessary to take measures to reduce the toxicity of heavy metals, especially cadmium (Cd). While engineered nanomaterials provide great benefits in environmental remediation, and nano-silicon dioxide (nSiO₂) has been considered as a potential new safer agrochemical for establishing plant resistance to Cd stress recently, but the systematically studies remain limited, especially in bitter gourd. The current study was conducted to study the mitigation effects and potential mechanism of exogenous nSiO₂ upon Cd toxicity in bitter gourd seedlings. Generally, the application of nSiO₂ reduced Cd concentrations in stems and roots. It mitigated Cd-induced root length, plant height, leaf area, and biomass inhibition in all tissues, with the mitigation effect of root length being the most obvious then followed by root dry weight (DW). In addition, exogenous nSiO₂ affected the plant mineral elements’ balance, by stimulating leaf/root Zn, leaf/root Na, and Mg content, and depressing Cu, leaf Fe, leaf/root Ca, and stem Na content, in comparison with Cd treatment alone. Moreover, the supplementation of nSiO₂ counteracted the changes of certain antioxidase induced by Cd, such as enhanced Cd depressed stem superoxide dismutase (SOD), and stem/root ascorbate peroxidase (APX), meanwhile reduced Cd elevated leaf SOD and peroxidase (POD) activities. In addition, exogenous nSiO₂ obviously depressed the accumulation of malondialdehyde (MDA) induced by Cd stress. The results clearly showed that the mitigated Cd toxicity by nSiO₂ addition was interrelated to the reduced MDA content and Cd concentration, balanced mineral element content and certain antioxidase activities, suggesting that nSiO₂ might play a vital role in providing tolerance against Cd stress in bitter gourd seedlings.</p></div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11738-023-03610-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50052358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}