Acta Physiologiae Plantarum最新文献_第4页

Exogenous ascorbic acid mitigates salt‐induced damage in soybean by modulating photosynthesis, antioxidant defense, and ionic homeostasis 外源抗坏血酸通过调节光合作用、抗氧化防御和离子稳态来减轻盐对大豆的伤害

IF 2.4 4区生物学

Acta Physiologiae Plantarum Pub Date : 2025-02-08 DOI: 10.1007/s11738-025-03770-z

Gabriela Eugenia Ajila-Celi, Luis Felipe Lata-Tenesaca, Kolima Peña Calzada, Rita de Cassia Alves, Mara Cristina Pessôa da Cruz, José Sidnaldo Pinzetta Junior, Willians César Carrega, Priscila Lupino Gratão

{"title":"Exogenous ascorbic acid mitigates salt‐induced damage in soybean by modulating photosynthesis, antioxidant defense, and ionic homeostasis","authors":"Gabriela Eugenia Ajila-Celi, Luis Felipe Lata-Tenesaca, Kolima Peña Calzada, Rita de Cassia Alves, Mara Cristina Pessôa da Cruz, José Sidnaldo Pinzetta Junior, Willians César Carrega, Priscila Lupino Gratão","doi":"10.1007/s11738-025-03770-z","DOIUrl":"10.1007/s11738-025-03770-z","url":null,"abstract":"<div>Ascorbic acid (AsA) is one of the most abundant antioxidants, and can modulate several functions in plants under abiotic stress conditions. However, little is known about the mechanism of limiting harmful effects of salt stress through different exogenous AsA application methods. This study evaluated the effect of AsA application via a nutrient solution, foliar spray, and a combination there of on the adverse effects of salt stress in soybean plants. Two experiments using a 4 × 2 factorial scheme under a randomized block design included a salt-tolerant (M 8372) and salt-sensitive (M-Soy 8222) soybean cultivar. The plants of both cultivars were subjected to 0 and 100 mmol L−1 of NaCl and 0.85 mmol L−1 and 100 mmol L−1 of AsA via the root and leaves. Salt stress reduced the chlorophyll and carotenoid contents and photosynthetic rate and increased Na+ accumulation and lipid peroxidation in both cultivars. However, AsA application via the roots and leaves in M 8372 and leaves in M-Soy 8222 limited the adverse effects of salt stress by increasing the antioxidant activity of superoxide dismutase (SOD, EC 1.15.1.1), ascorbate peroxidase (APX, EC 1.11.1.11), and guaiacol peroxidase (GPOX, EC 1.11.1.7), as well as proline and endogenous AsA levels, thereby reducing Na+ accumulation in the tissues. In addition, AsA limited damage to the photosynthetic apparatus, as evidenced by the increased photosynthetic pigment content and photosynthetic rate, promoting plant growth. These results provide a new perspective on AsA delivery methods in soybean development under salt stress.</div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":"47 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361668","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}

引用次数: 0

Meta-analysis of quantitative trait loci associated with grain quality traits in rice (Oryza sativa L.) 水稻（Oryza sativa L.）品质性状相关数量性状位点的meta分析

IF 2.4 4区生物学

Acta Physiologiae Plantarum Pub Date : 2025-02-08 DOI: 10.1007/s11738-025-03780-x

Nahid Feizi, Atefeh Sabouri, Amin Abedi, Adel Bakhshipour

{"title":"Meta-analysis of quantitative trait loci associated with grain quality traits in rice (Oryza sativa L.)","authors":"Nahid Feizi, Atefeh Sabouri, Amin Abedi, Adel Bakhshipour","doi":"10.1007/s11738-025-03780-x","DOIUrl":"10.1007/s11738-025-03780-x","url":null,"abstract":"<div>Rice grain quality is a crucial factor in determining its economic value. Numerous studies have identified quantitative trait loci (QTLs) associated with grain quality. However, to date, no meta-analysis of QTLs for rice cooking and eating quality traits has been reported. Therefore, we conducted a meta-analysis of QTLs to identify consensus QTLs located at the same locus across multiple studies, aiming to detect significant meta-QTLs (MQTLs) that can be targeted for marker-assisted selection (MAS) applications. In this study, 26 MQTLs were identified from 193 initial independent QTLs related to grain quality traits, including amylose content (AC), gel consistency (GC), and gelatinization temperature (GT). The substantial reduction in the confidence interval of the initial QTLs compared to the MQTLs (from 20.91 to 7.21 cM) led to the identification of both annotated and putative candidate genes associated with the traits. The highest number of MQTLs (eight) was found on chromosome 6. The phenotypic variance explained (R2) by the MQTLs ranged from 2 to 51%, with an average of 19%. Out of the 561 candidate genes identified within the MQTLs, 461 had available expression data. Analysis of their expression patterns in various rice tissues showed that 181 genes had an expression value (FPKM) greater than 10 in at least one tissue, making them promising candidate genes. Gene ontology (GO) analysis of these promising genes highlights their significant roles in various biological processes in rice. This is the first study to identify meta-QTLs associated with cooking and eating grain quality in rice.</div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":"47 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361726","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}

引用次数: 0

Influence of different storage temperature on physiology, quality, antioxidant activity and shelf life of avocado fruits (Persea americana Mill.) 不同贮藏温度对鳄梨果实生理、品质、抗氧化活性和保质期的影响

IF 2.4 4区生物学

Acta Physiologiae Plantarum Pub Date : 2025-02-08 DOI: 10.1007/s11738-025-03777-6

Vittal Kamble, C. K. Narayana, G. Karunakaran, D. V. Sudhakar Rao, S. Sriram, R. H. Laxman

{"title":"Influence of different storage temperature on physiology, quality, antioxidant activity and shelf life of avocado fruits (Persea americana Mill.)","authors":"Vittal Kamble, C. K. Narayana, G. Karunakaran, D. V. Sudhakar Rao, S. Sriram, R. H. Laxman","doi":"10.1007/s11738-025-03777-6","DOIUrl":"10.1007/s11738-025-03777-6","url":null,"abstract":"<div>The aim of present study was to investigate the effect of different storage temperatures on physiology, quality, antioxidant activity and shelf life of avocado fruits. The optimum mature avocado fruits were harvested (150 days after fruit set) from accession CHES-HA-I/I and CHES-HA-VII/I, and brought to the laboratory. These fruits were stored at 5, 9 and 12 °C with 90–95% relative humidity (RH) and at ambient condition (26–32 °C with 55–62% RH). The results showed that, low-temperature storage significantly reduced the physiologic and biochemical processes in the fruit. Lower physiologic loss in weight (PLW), slower rate of ripening, reduced respiration and ethylene production and higher carbohydrates, protein and crude fat content were recorded in low-temperature storage, whereas higher antioxidant activity in terms of total phenolic content (TPC), free radical scavenging activity (FRSA) and ferric reducing ability of plasma (FRAP) was found in avocado fruits stored at ambient temperature. It was also observed that chilling injury (CI) developed in fruits stored at 5 °C. From the present study, it is concluded that among different low temperatures, fruits stored at 9 °C had better storage life with more fruit quality, higher antioxidant activity and least spoilage as compared to other temperatures.</div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":"47 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361669","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}

引用次数: 0

Appraisal of the physio-biochemical efficacy of exogenously applied natural and synthetic sources of plant growth stimulants in modulating drought stress tolerance in maize (Zea mays L.) 外源天然和合成植物生长刺激剂调控玉米（Zea mays L.）抗旱性的生理生化效应评价

IF 2.4 4区生物学

Acta Physiologiae Plantarum Pub Date : 2025-02-08 DOI: 10.1007/s11738-024-03758-1

Abrar Ahmad, Nudrat Aisha Akram, Muhammad Ashraf

{"title":"Appraisal of the physio-biochemical efficacy of exogenously applied natural and synthetic sources of plant growth stimulants in modulating drought stress tolerance in maize (Zea mays L.)","authors":"Abrar Ahmad, Nudrat Aisha Akram, Muhammad Ashraf","doi":"10.1007/s11738-024-03758-1","DOIUrl":"10.1007/s11738-024-03758-1","url":null,"abstract":"<div>Phytoextracts as a cheap source of growth promoters as well as synthetic chemicals are being widely used these days to treat plants subjected to stress conditions. To compare the effects of natural growth regulators and synthetic ones, a pot experiment was conducted using natural [moringa leaf extract (MLE)] and synthetic (vitamins B1 and B2) sources to appraise the mitigating of drought-induced adverse effects on maize (Zea mays L.) plants. Seeds of both differentials stress tolerant maize cultivars (YH-1898 and Sahiwal Gold) were primed with natural (MLE), synthetic (thiamin and riboflavin), and their combination (MLE, thiamin, and riboflavin) and subjected to 100% field capacity [F.C. (control)] and 60% F.C. (drought) conditions. Drought stress (60% F.C.) significantly decreased plant biomass and total soluble proteins (TSP), whereas no significant alteration was observed in chlorophyll contents. However, in contrast, it improved glycine betaine (GB), proline, hydrogen peroxide (H2O2), malondialdehyde (MDA), total phenolics, and ascorbic acid as well as the activities of superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) enzymes in both maize cultivars. Priming seeds with different sources enhanced growth attributes, chlorophyll pigments, osmolyte concentration, total phenolics, ascorbic acid, and the activities of reactive oxygen species (ROS) scavenging enzymes (SOD, POD, and CAT), but it reduced the accumulation of H2O2 and MDA. Overall, a natural source, MLE as a plant growth regulator, remarkably reduced the adverse effects of drought stress and enhanced the growth of maize cultivars, whereas riboflavin among the synthetic PGRs was more effective in upregulating the oxidative defense and osmoprotectant accumulation.</div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":"47 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361666","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}

引用次数: 0

Nitric oxide application improves photosynthetic light-response through enhancing photosystem II efficiency of bean plants (Phaseolus vulgaris L.) submitted to manganese stress 氮氧化物通过提高锰胁迫下豆科植物光合系统ⅱ效率改善光合光响应

IF 2.4 4区生物学

Acta Physiologiae Plantarum Pub Date : 2025-01-29 DOI: 10.1007/s11738-025-03779-4

Yathreb Mahjoubi, Robyn Emmerson, Oussama Kharbech, Marouane Ben Massoud, Phillip Davey, Wahbi Djebali

{"title":"Nitric oxide application improves photosynthetic light-response through enhancing photosystem II efficiency of bean plants (Phaseolus vulgaris L.) submitted to manganese stress","authors":"Yathreb Mahjoubi, Robyn Emmerson, Oussama Kharbech, Marouane Ben Massoud, Phillip Davey, Wahbi Djebali","doi":"10.1007/s11738-025-03779-4","DOIUrl":"10.1007/s11738-025-03779-4","url":null,"abstract":"<div>Toxicity of manganese (Mn) affects plant metabolism, leading to tissue dysfunction and reduced yields. Excessive Mn levels interfere with photosynthesis and cause oxidative stress, damaging cellular structures and impairing plant development. This study examines the role of nitric oxide (NO), a molecule enhancing cellular antioxidant defenses, in mitigating Mn stress in bean (Phaseolus vulgaris L.) plants. Manganese at 500 µM impaired plant biomass and led to Mn accumulation in roots and shoots, reducing carbon assimilation (A) and decreasing stomatal conductance (gs) and transpiration (E) rates. Despite Mn stress, chlorophyll fluorescence and photosystem II function, remained stable, while non-photochemical quenching (NPQ) increased. Application of sodium nitroprusside (SNP, as NO donor) to Mn-stressed plants ameliorated biomass yield through enhancing A, gs, and E rates, thus improving light energy use. This was accompanied by reduced glutathione-ascorbate cycle enzyme activities in leaves. These findings underscore the dual role of SNP in enhancing Mn stress tolerance in bean plants possibly by facilitating Mn compartmentalization within roots, protecting shoots from toxicity, thereby the photosynthetic machinery and promoting plant growth. This study highlights SNP's potential in managing metal stress in plants, with implications for improving agricultural productivity under adverse environmental conditions.</div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":"47 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109895","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}

引用次数: 0

Does drought have a significant impact on the allelopathy of invasive plant Bidens pilosa L. from two different distribution regions? 干旱是否对两个不同分布区的入侵植物Bidens pilosa L.的化感作用有显著影响？

IF 2.4 4区生物学

Acta Physiologiae Plantarum Pub Date : 2025-01-28 DOI: 10.1007/s11738-025-03776-7

Yue Li, Chuang Li, Yingsheng Liu, Huanshi Zhang, Zhelun Xu, Shanshan Zhong, Congyan Wang, Daolin Du

{"title":"Does drought have a significant impact on the allelopathy of invasive plant Bidens pilosa L. from two different distribution regions?","authors":"Yue Li, Chuang Li, Yingsheng Liu, Huanshi Zhang, Zhelun Xu, Shanshan Zhong, Congyan Wang, Daolin Du","doi":"10.1007/s11738-025-03776-7","DOIUrl":"10.1007/s11738-025-03776-7","url":null,"abstract":"<div>The allelopathy of invasive plants on the growth performance of neighboring species is a crucial factor in their successful invasion. Drought can affect this interference. Numerous invasive plants, including Bidens pilosa L., can be distributed in different regions in China. This study aimed to analyze the allelopathy of the invasive Asteraceae plant B. pilosa (using its aqueous leaf extracts) from two distribution regions (a low-latitude region and a high-latitude region) in southern China on the seed germination and seedling growth of the Asteraceae plant Lactuca sativa L. under drought (simulated using Polyethylene glycol-6000). Bidens pilosa extracts from the low-latitude region induced greater allelopathy on L. sativa than those from the high-latitude region. Drought intensified the allelopathy of B. pilosa extracts on the seed germination and seedling growth of L. sativa. Bidens pilosa extracts from the low-latitude region posed greater allelopathy on L. sativa than those from the high-latitude region under light drought. However, B. pilosa extracts from the high-latitude region exhibited greater allelopathy on L. sativa than those from the low-latitude region under heavy drought. The intensified allelopathy of B. pilosa extracts on the seed germination and seedling growth of neighboring species under drought may be beneficial to its invasion process. Therefore, it is imperative to eradicate B. pilosa as expeditiously as possible in the habitats where seeds of neighboring species are sown to reduce the allelopathy of B. pilosa on the growth performance (particularly the seed germination and seedling growth) of neighboring species, especially under drought.</div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":"47 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109819","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}

引用次数: 0

Pb tolerance in Echinodorus grandiflorus through the maintenance of root growth, nutrient uptake, and changes in the root cortical anatomy 通过维持根生长、养分吸收和根皮质解剖结构的变化，桔梗对铅的耐受

IF 2.4 4区生物学

Acta Physiologiae Plantarum Pub Date : 2025-01-28 DOI: 10.1007/s11738-025-03773-w

Estefânia Santos Ribeiro, Marcio Paulo Pereira, Evaristo Mauro de Castro, Gabriel de Resende Baroni, Maxwell Pereira de Pádua, Fabricio José Pereira

{"title":"Pb tolerance in Echinodorus grandiflorus through the maintenance of root growth, nutrient uptake, and changes in the root cortical anatomy","authors":"Estefânia Santos Ribeiro, Marcio Paulo Pereira, Evaristo Mauro de Castro, Gabriel de Resende Baroni, Maxwell Pereira de Pádua, Fabricio José Pereira","doi":"10.1007/s11738-025-03773-w","DOIUrl":"10.1007/s11738-025-03773-w","url":null,"abstract":"<div>Lead (Pb) is a toxic pollutant for plants and animals that has increased in abundance worldwide; and aquatic environments are among those sensitive to Pb contamination. This study aimed to evaluate the effects of Pb on nutrient uptake, growth, and root anatomy in Echinodorus grandiflorus. Experiments were established with E. grandiflorus plants exposed to 0, 0.75, 1.5, 3.0, and 9.0 μM Pb(NO3)2 in nutrient solution. The plants were kept under these conditions for 60 days. At the end of the experiment, the concentrations of lead, macro-, and micronutrients, plant growth, and changes in root anatomy were evaluated. E. grandiflorus absorbed Pb proportionally to the concentrations applied in the nutrient solution. The species also showed changes in the absorption of N, P, K, Mg, S, Ca, Cu, Mn, Zn, and Fe. However, at all Pb concentrations, the modified absorption of these nutrients was still adequate for the plant and did not demonstrate evident toxicity. Root growth was not significantly altered, and root anatomy analysis revealed increased proportions of aerenchyma in the cortex to the detriment of exodermis and even endodermis at higher Pb concentrations. Therefore, E. grandiflorus plants demonstrate the potential for remediating Pb-contaminated environments due to their ability to absorb Pb without nutritional disturbances or disruptions in root structure and growth.</div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":"47 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109620","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}

引用次数: 0

Application of silver and selenium nanoparticles to enhance plant-defense response against biotic stressors 纳米银和纳米硒增强植物对生物胁迫的防御反应

IF 2.4 4区生物学

Acta Physiologiae Plantarum Pub Date : 2025-01-27 DOI: 10.1007/s11738-025-03768-7

Anielkis Batista, Van Chung Mai, Katarzyna Sadowska, Mateusz Labudda, Philippe Jeandet, Iwona Morkunas

引用次数: 0

Unravelling the proteome of Saccharum officinarum cv. BO91 for novel defense-related proteins during C. falcatum infection 糖的蛋白质组学研究。在镰状镰刀菌感染过程中，新的防御相关蛋白的BO91

IF 2.4 4区生物学

Acta Physiologiae Plantarum Pub Date : 2025-01-27 DOI: 10.1007/s11738-025-03766-9

Ranjit Singh Gujjar, Deeksha Joshi, Sanjay Kumar Goswami, Rajeev Kumar, Arjun Singh, Atul Kumar Upadhyay

{"title":"Unravelling the proteome of Saccharum officinarum cv. BO91 for novel defense-related proteins during C. falcatum infection","authors":"Ranjit Singh Gujjar, Deeksha Joshi, Sanjay Kumar Goswami, Rajeev Kumar, Arjun Singh, Atul Kumar Upadhyay","doi":"10.1007/s11738-025-03766-9","DOIUrl":"10.1007/s11738-025-03766-9","url":null,"abstract":"<div>Red rot, caused by Colletotrichum falcatum, is one of the most destructive diseases of sugarcane that affects the production sugarcane to a huge extent in India. In the present study, moderately red-rot resistant Saccharum officinarum cv. BO91 was inoculated with virulent C. falcatum (CF8) at grand growth phase. Stalk samples were taken at different time intervals to analyze the differentially abundant proteins through nanoLCMS/MS-based proteome analysis. The results indicated that the total number of identified peptides were significantly high (4026) in healthy sugarcane stalks, compared to fungal infected stalks. C. falcatum infection caused a drastic reduction in the number of peptides in sugarcane stalks at different time intervals (2565 at 3 h, 2610 at 6 h, and 2111 at 24 h). However, we found 97 exclusively abundant proteins in fungal infected stalks of sugarcane. Plenty of these proteins have already been functionally characterized in different other crop plants for their association with defense responses. The defense-related proteins included 30S ribosomal protein S15, bifunctional purine biosynthesis protein, CaM-binding domain-containing protein, kaurene synthase-3, DUF family protein, Ig-like domain repeat protein, methyl-accepting chemotaxis protein, O-fucosyltransferase family protein, coproporphyrinogen III oxidase, phenylalanine ammonia-lyase, phosphoglycerate kinase, receptor-like serine/threonine-protein kinase, scarecrow/scarecrow-like protein, and porphobilinogen deaminase. Though majority of commercially grown sugarcane cultivars are susceptible to the red rot pathogen, the proteome of BO91 cultivar displayed the differential abundance of a number of proteins involved in the stimulation of defense responses.</div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":"47 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109453","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}

引用次数: 0

Does the phosphorylation of MAP65-1 correlate with the effects of Cr(VI) on Arabidopsis thaliana microtubules? MAP65-1的磷酸化是否与Cr（VI）对拟南芥微管的影响有关？

IF 2.4 4区生物学

Acta Physiologiae Plantarum Pub Date : 2025-01-23 DOI: 10.1007/s11738-024-03765-2

Ioannis-Dimosthenis S. Adamakis, Eleftherios P. Eleftheriou

{"title":"Does the phosphorylation of MAP65-1 correlate with the effects of Cr(VI) on Arabidopsis thaliana microtubules?","authors":"Ioannis-Dimosthenis S. Adamakis, Eleftherios P. Eleftheriou","doi":"10.1007/s11738-024-03765-2","DOIUrl":"10.1007/s11738-024-03765-2","url":null,"abstract":"<div><h3>Key message</h3>MAP65-1 phosphorylation mediates Cr(VI)-induced microtubule disruption in plants.<h3>Abstract</h3>Chromium (Cr) exists in two prevalent forms in the environment: trivalent Cr(III) and hexavalent Cr(VI). While Cr(III) can benefit plants as a micronutrient, Cr(VI) is highly toxic and disrupts essential physiological, biochemical, and cellular processes in plants. Plant cell microtubules (MTs) are particularly susceptible to Cr(VI) toxicity, with MAP65-1, a key microtubule-associated protein, playing a crucial role in stabilizing MTs by forming cross-bridges between them. The stability function of MAP65-1 is influenced by its phosphorylation status: phosphorylation causes MAP65-1 to detach from MTs during different cell cycle phases. This study investigated how Cr(VI) affects MAP65-1 presence on cortical MTs in Arabidopsis thaliana roots and hypocotyls. Seedlings expressing GFP:AtMAP65-1 and its non-phosphorylatable variant, AtMAP65-19A (GFP:AtMAP65-19A), were exposed to 100 μM potassium dichromate (K2Cr2O7, Cr(VI)) on ½ MS solid medium for 24 or 48 h. Confocal laser scanning microscopy (CLSM) revealed that Cr(VI) began impacting cortical MTs within 24 h. The signal intensity of GFP indicated a significant reduction in MAP65-1 presence, whereas the GFP:AtMAP65-19A signal remained stable and MTs were unaffected. These results suggest that Cr(VI) toxicity to MTs is linked to MAP65-1’s phosphorylation status.</div>","PeriodicalId":6973,"journal":{"name":"Acta Physiologiae Plantarum","volume":"47 2","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11738-024-03765-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143109143","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}

引用次数: 0