Physiologia plantarum最新文献_第10页

Exploring Birch Salt Tolerance Using Gene Regulatory Network Highlighting Hormone Signaling, Reactive Oxygen Species Scavenging, and Ion Homeostasis. 利用激素信号、活性氧清除和离子稳态等基因调控网络探索桦树耐盐性。

IF 5.4 2区生物学

Physiologia plantarum Pub Date : 2025-05-01 DOI: 10.1111/ppl.70331

Jingxin Wang, Xiaomeng Sun, Pengyu Wang, Siqi Wu, Yucheng Wang

{"title":"Exploring Birch Salt Tolerance Using Gene Regulatory Network Highlighting Hormone Signaling, Reactive Oxygen Species Scavenging, and Ion Homeostasis.","authors":"Jingxin Wang, Xiaomeng Sun, Pengyu Wang, Siqi Wu, Yucheng Wang","doi":"10.1111/ppl.70331","DOIUrl":"https://doi.org/10.1111/ppl.70331","url":null,"abstract":"Salt stress presents a formidable challenge for plant survival, yet the intricate regulatory networks dictating salt-tolerant gene expression remain elusive. This research delineates a gene regulatory network (GRN) in birch (Betula platyphylla) under salt stress, utilizing a partial correlation coefficient-based algorithm. The GRN comprises three hierarchical layers: the top layer with 5 transcription factors (TFs), the middle layer with 22 TFs, and the bottom layer encompassing 345 structural genes, totaling 1458 regulatory interactions. Validation through ChIP-PCR and qRT-PCR confirmed approximately 87.5% and 68.7% accuracy of predicted interactions in the top-middle and middle-bottom layers, respectively. The GRN underscores the pivotal roles of abscisic acid (ABA), jasmonic acid (JA), and cytokinin (CK) signaling pathways, emphasizing ROS scavenging and ion homeostasis as critical for salt tolerance. Among the top layer TFs, BpERF105 demonstrated superior salt tolerance, positioning it as a key regulatory element. This study posits that birch's salt tolerance is orchestrated through a regulatory homeostasis mediated by intricate TF-TF and TF-DNA interactions, providing profound insights into the molecular underpinnings of plant salt stress responses.","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"177 3","pages":"e70331"},"PeriodicalIF":5.4,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144286124","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}

引用次数: 0

Impact of Iron Deficiency on the Arabidopsis thaliana Phloem Sap Proteome, a Key Role for bHLH121. 铁缺乏对拟南芥韧皮部汁液蛋白质组的影响，bHLH121的关键作用。

IF 5.4 2区生物学

Physiologia plantarum Pub Date : 2025-05-01 DOI: 10.1111/ppl.70336

Berger Nathalie, Kalra Muskan, Gao Fei, Rofidal Valérie, Demolombe Vincent, Santoni Véronique, Dubos Christian

{"title":"Impact of Iron Deficiency on the Arabidopsis thaliana Phloem Sap Proteome, a Key Role for bHLH121.","authors":"Berger Nathalie, Kalra Muskan, Gao Fei, Rofidal Valérie, Demolombe Vincent, Santoni Véronique, Dubos Christian","doi":"10.1111/ppl.70336","DOIUrl":"10.1111/ppl.70336","url":null,"abstract":"Iron (Fe) is an essential micronutrient for plant growth and development whose homeostasis must be tightly regulated to avoid deficiency or excess that could be detrimental to the cells. In Arabidopsis thaliana, this mechanism is regulated by a series of transcription factors that act in an intricate regulatory network among which URI/bHLH121 (UPSTREAM REGULATOR OF IRT1) plays a predominant role. Tremendous efforts were deployed to decipher the molecular mechanisms that regulate iron homeostasis in plants. Nonetheless, the nature of the long-distance signal that conveys, via the phloem sap, information on the iron status of aerial tissues to the roots in order to coordinate iron uptake with the plant needs for iron is still to be determined. With the aim to identify potential actors involved in this process, we set up a proteomic analysis of the phloem sap of wild type Arabidopsis plants and bhlh121 loss-of-function mutants grown in iron-replete and iron-deficient conditions. We found that modifications in iron availability or the loss of URI activity have a profound impact on the phloem sap protein composition. We also found that some proteins whose translocation through the phloem sap is inhibited in response to iron deficiency are also affected in bhlh121 mutants. Interestingly, we discovered that some of the genes encoding such proteins are direct targets of URI, which suggests that the encoded proteins might act as potential signaling factors to regulate root iron uptake and/or root growth.","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"177 3","pages":"e70336"},"PeriodicalIF":5.4,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12177908/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144326634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Structural and Functional Diversity of Glutamate Receptors-Like Channels in Plants. 植物谷氨酸受体样通道的结构和功能多样性。

IF 5.4 2区生物学

Physiologia plantarum Pub Date : 2025-05-01 DOI: 10.1111/ppl.70313

Bisma Riaz, Yanli Zhang, Adeel Riaz, Wei Jiang, Hafiza Sadia, Yuan Qin, Guang Chen, Zhong-Hua Chen, Fenglin Deng, Fanrong Zeng

{"title":"Structural and Functional Diversity of Glutamate Receptors-Like Channels in Plants.","authors":"Bisma Riaz, Yanli Zhang, Adeel Riaz, Wei Jiang, Hafiza Sadia, Yuan Qin, Guang Chen, Zhong-Hua Chen, Fenglin Deng, Fanrong Zeng","doi":"10.1111/ppl.70313","DOIUrl":"https://doi.org/10.1111/ppl.70313","url":null,"abstract":"Glutamate receptor-like (GLR) family encodes cation-permeable ion channels that are crucial for defense signaling and have attracted significant research interest. The identification of multiple GLRs subfamilies across vascular lineages suggests their functional diversity in plants. Functional studies of clade 3 GLRs confirm their critical role in generating electrical signals and increasing cytosolic Ca2+ in response to mechanical wounding, insect and pathogen attacks, and other environmental cues for systemic defense responses. In this review, we present evidence that GLRs are conserved across all plant lineages and likely originated from Streptophyta. Comparative bioinformatic analysis of GLRs' functional domains reveals that ion channel gating and ligand binding of GLR are highly conserved and involved in ion transport and cell-to-cell communication in plants. The role of GLRs in electrical and Ca2+ signaling is also discussed in non-vascular tissues as well as in vascular plants. The hypothetical model suggests that GLR-induced systemic defense responses to external stimuli may have co-evolved with plant vascular systems. We also highlight the role of glutamate and other amino acid agonists in regulating membrane depolarization and cytosolic Ca2+ concentration. Finally, we review the roles of GLR in physiological processes, abiotic and biotic stresses, and strategies to enhance plant health and productivity.","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"177 3","pages":"e70313"},"PeriodicalIF":5.4,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144226244","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}

引用次数: 0

The Influence of Bisphenol A on Parsley: A Biochemical and Metabolomics Integrative Perspective. 双酚A对欧芹的影响：生化和代谢组学的综合视角。

IF 5.4 2区生物学

Physiologia plantarum Pub Date : 2025-05-01 DOI: 10.1111/ppl.70262

Hajar Salehi, Leilei Zhang, Fevzi Elbasan, Gokhan Zengin, Busra Arikan-Abdulveli, Melike Balci, Aysegul Yildiztugay, Ceyda Ozfidan-Konakci, Evren Yildiztugay, Luigi Lucini

{"title":"The Influence of Bisphenol A on Parsley: A Biochemical and Metabolomics Integrative Perspective.","authors":"Hajar Salehi, Leilei Zhang, Fevzi Elbasan, Gokhan Zengin, Busra Arikan-Abdulveli, Melike Balci, Aysegul Yildiztugay, Ceyda Ozfidan-Konakci, Evren Yildiztugay, Luigi Lucini","doi":"10.1111/ppl.70262","DOIUrl":"https://doi.org/10.1111/ppl.70262","url":null,"abstract":"Bisphenol A (BPA), a widely used industrial chemical, poses environmental concerns due to its persistence and potential effects on plant systems. This study examines the impact of three BPA exposure levels on parsley plants, focusing on physiological, biochemical, and metabolomic responses. BPA exposure significantly shaped the plant's defense mechanisms, mainly through increased phenolic (up to 16.81%) and flavonoid (up to 37.94%) accumulation compared to the control group, which, in turn, enhanced antioxidant activity [up to 34% in 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 51% in cupric reducing antioxidant capacity (CUPRAC)]. A moderate correlation between phenolic content and radical scavenging ability [R: 0.61 for DPPH and R: 0.44 for 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS)] highlights phenolics' role in mitigating BPA-induced oxidative stress. Low BPA concentrations stimulated gas exchange and photosynthesis, while higher levels (≥3 mg/L) disrupted these processes, causing physiological damage, especially in stomatal conductance (gs) and photochemical efficiency (Fv/Fo). Metabolomic profiling revealed concentration-dependent shifts in secondary metabolism, lipid biosynthesis, and stress-response pathways. At higher BPA levels, plants elicited defense mechanisms, such as flavonoids (rhamnetin, luteolin-7-O-β-D-glucronide, and quercetin-7-O-glucoside) and anthocyanin pathways, to tackle oxidative stress, though these systems became overwhelmed. Our findings show that while parsley can initially adapt to low BPA exposure, higher concentrations compromise its physiological and metabolic balance, threatening plant health and productivity.","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"177 3","pages":"e70262"},"PeriodicalIF":5.4,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144027472","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}

引用次数: 0

2,4-Epibrassinolide Alleviates cd Toxicity in Vigna angularis by Boosting Antioxidant Defense, Detoxification, and Genome Stability. 2,4-表油菜素内酯通过增强抗氧化防御、解毒和基因组稳定性来减轻角藤的cd毒性。

IF 5.4 2区生物学

Physiologia plantarum Pub Date : 2025-05-01 DOI: 10.1111/ppl.70288

Zihan Tang, Hetong Wang, Suyu Chen, Xianpeng Wang, Jialin Hou, Yuxian Zhang, Qiang Zhao

{"title":"2,4-Epibrassinolide Alleviates cd Toxicity in Vigna angularis by Boosting Antioxidant Defense, Detoxification, and Genome Stability.","authors":"Zihan Tang, Hetong Wang, Suyu Chen, Xianpeng Wang, Jialin Hou, Yuxian Zhang, Qiang Zhao","doi":"10.1111/ppl.70288","DOIUrl":"https://doi.org/10.1111/ppl.70288","url":null,"abstract":"Cadmium is one of the most toxic heavy metal pollutants in the world, seriously affecting crop growth and human health. 2,4-Epibrassinolide (BRs) has been proven to promote plant growth, enhance abiotic stress resistance and improve crop quality and yield. In this study, adzuki bean (V. angularis) cultivar 'Zhen Zhuhong' was grown hydroponically in 1/2 Hoagland nutrient solution with 0, 1, and 2 mg L-1 cadmium chloride (CdCl2), and then treated with 0 or 1 μM BR at the V1 stage. Compared with Cd stress, ascorbic acid content, peroxidase (POD, EC 1.11.1.7), catalase (CAT, EC 1.11.1.6) and superoxide dismutase (SOD, EC1.15.1.1) activities in adzuki Cd-stressed bean roots under BR treatment were increased by 30.63%, 41.83%, 51.49%, and 29.48%, which alleviated intracellular ROS accumulation and DNA oxidative damage. In addition, proline content and free amino acid content in BR-treated adzuki bean seedling roots under Cd stress increased by 30.37% and 35.96%, which was conducive to maintaining cell membrane homeostasis and improving root activity. RNA-seq and real-time quantitative reverse transcription PCR analyses revealed that BR treatment regulates the absorption, transport, and accumulation processes of Cd2+ in adzuki bean seedling roots, reducing the nonspecific accumulation of Cd2+ within cells and alleviating the toxic effects of Cd on root cells. BR treatment enhances the DNA damage repair in the roots of adzuki beans under Cd stress by reducing the extent of DNA oxidative damage, and effectively promoting the transition of cells from the G1 phase to the S phase.","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"177 3","pages":"e70288"},"PeriodicalIF":5.4,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144173195","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}

引用次数: 0

The Urea Cycle in Connection to Polyamine Metabolism in Higher Plants: New Perspectives on a Central Pathway. 高等植物尿素循环与多胺代谢的关系：中央途径的新视角

IF 5.4 2区生物学

Physiologia plantarum Pub Date : 2025-05-01 DOI: 10.1111/ppl.70321

J Buezo, M Urra, E M González, R Alcázar, D Marino, J F Moran

{"title":"The Urea Cycle in Connection to Polyamine Metabolism in Higher Plants: New Perspectives on a Central Pathway.","authors":"J Buezo, M Urra, E M González, R Alcázar, D Marino, J F Moran","doi":"10.1111/ppl.70321","DOIUrl":"10.1111/ppl.70321","url":null,"abstract":"The ornithine-urea cycle is a biochemical pathway primarily found in animals, where it plays a crucial role in the re-assimilation of ammonium and the removal of excess nitrogen in the form of urea. In lower photosynthetic eukaryotes, it contributes to metabolic responses during episodes of high nitrogen availability. In higher plants, although historically overlooked, compelling evidence indicates the pivotal role of the urea cycle in different aspects of plant physiology and metabolism. In particular, it is associated with the metabolism of polyamines during stress. Unlike in animals and lower photosynthetic eukaryotes, in higher plants, the urea cycle is not complete due to the lack of the carbamoyl phosphate synthase-I enzyme that incorporates ammonium into the cycle. Higher plants only possess a type-II carbamoyl phosphate synthase-II that introduces glutamine into the cycle, which is also metabolically linked to arginine and polyamine metabolism. Putrescine accumulation is a metabolic hallmark of different types of abiotic stresses, such as drought, salinity, ammonium stress, iron and phosphorus deficiency, and low temperatures. Notably, the exogenous application of polyamines, such as putrescine or spermine, enhances tolerance to abiotic stress, a process in which the free radical nitric oxide appears to play a role. Overall, this review article attempts to bring together the current knowledge on the functionality of the constituent enzymes and metabolites of the urea cycle and discuss the importance of this pathway in relation to the metabolism of polyamine in higher plants.","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"177 3","pages":"e70321"},"PeriodicalIF":5.4,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12163876/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144286127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Anaerobic-Aerobic Swerve in Arsenic-Stressed Deepwater Rice Genotype Under Submergence. 水下砷胁迫下深水水稻基因型的厌氧-好氧转向。

IF 5.4 2区生物学

Physiologia plantarum Pub Date : 2025-05-01 DOI: 10.1111/ppl.70272

Asna Khan, Narjis Saba Khatoon, Jyothilakshmi Vadassery, Meetu Gupta

{"title":"Anaerobic-Aerobic Swerve in Arsenic-Stressed Deepwater Rice Genotype Under Submergence.","authors":"Asna Khan, Narjis Saba Khatoon, Jyothilakshmi Vadassery, Meetu Gupta","doi":"10.1111/ppl.70272","DOIUrl":"10.1111/ppl.70272","url":null,"abstract":"Global floods in arsenic (As)-stressed paddy fields affect rice productivity. Future predictions of flood-related disasters provoke an urge to opt for climate-smart varieties for a secure supply. Thus, this study is designed to present the mechanisms favoring a traditional variety Mini mansoori (M.M) to withstand the dual stress of As and submergence (Sub). The investigation involved the identification of the key attributes regulating the physio-biochemical shifts in 3- and 7-day (d) submerged plants. Our results indicated that at 3 days, gas-film (GF) decrement correlated with reduced photosynthesis and Kreb-cycle enzymes. This, in turn, stimulated anaerobic enzymes, salicylic acid, and gibberellic acid (SA-GA) production, which increased glutamate metabolism through GDH enzyme, ultimately enhancing GABA and proline production to cover the energy gap. Proline dehydrogenase enzyme at 3 days monitored the stabilized proline turnover by catabolizing proline into glutamate while releasing reducing equivalents for additional ATP generation. However, at 7 days, further enhancement in GA content led to shoot elongation. The expanded GF and new leaf emergence recovered the photosynthetic machinery, TCA functioning, sugar reserves, and GABA content via proline homeostasis. This proline metabolic balance accentuated As tolerance and Sub resistance, henceforth presenting M.M. var. as climate smart for future crop improvements.","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"177 3","pages":"e70272"},"PeriodicalIF":5.4,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144128386","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}

引用次数: 0

Introduction to the Special Issue in Honor of Eva-Mari Aro. 纪念Eva-Mari Aro的特刊简介。

IF 5.4 2区生物学

Physiologia plantarum Pub Date : 2025-05-01 DOI: 10.1111/ppl.70322

Cheryl A Kerfeld, Eva-Mari Aro

引用次数: 0

Oligogalacturonides Operate as Endogenous Elicitors to Regulate Aluminum Tolerance in Pea (Pisum sativum). 低聚半乳糖醛酸酯作为内源激发子调控豌豆的铝耐受性。

IF 5.4 2区生物学

Physiologia plantarum Pub Date : 2025-05-01 DOI: 10.1111/ppl.70326

Xuewen Li, Xiaobei Cao, Zidu Liu, Shuting Liu, Xiaopei Ma, Wangchuan Zhang, Lin Tao, Jiayou Liu, Yingming Feng, Sergey Shabala, Yalin Li, Min Yu

{"title":"Oligogalacturonides Operate as Endogenous Elicitors to Regulate Aluminum Tolerance in Pea (Pisum sativum).","authors":"Xuewen Li, Xiaobei Cao, Zidu Liu, Shuting Liu, Xiaopei Ma, Wangchuan Zhang, Lin Tao, Jiayou Liu, Yingming Feng, Sergey Shabala, Yalin Li, Min Yu","doi":"10.1111/ppl.70326","DOIUrl":"https://doi.org/10.1111/ppl.70326","url":null,"abstract":"Aluminum (Al) toxicity is a major limiting factor leading to crop yield reduction in acidic soils. The pectic polysaccharides, key components of plant cell walls, are considered the primary binding site for Al ions. Oligogalacturonide (OGA), the oligomers of alpha-1,4-linked galacturonosyl residues originating from the degradation of cell wall pectin (homogalacturonan), are able to elicit defense responses and protect plants against biotic stress, such as pathogen infections. However, the involvement of OGA in the plant's response to abiotic stress remains to be elucidated. In this work, we analysed the effects of Al treatment on the endogenous OGA content in pea root tips, as well as the effects of OGA pretreatment on pea root elongation, Al content, and reactive oxygen species (ROS) metabolism, with a working hypothesis being that OGA is causally involved in plant responses to Al toxicity. Hydroponically grown pea (Pisum sativum) plants were used to explore the biological functions of OGA in response to Al toxicity. Our data showed that Al treatment significantly induced the accumulation of endogenous OGA in root tips, primarily in the form of short-chain OGA. Pretreatment with exogenous OGA for 12 h notably improved pea tolerance to Al toxicity, including mitigating Al-induced suppression of root elongation growth and attenuating Al toxicity effects on the root system. OGA also enhanced Al tolerance by regulating redox homeostasis in root tips, reducing Al toxicity-induced accumulation of ROS and by transcriptional upregulation of antioxidant enzyme activities. Overall, this research is the first to demonstrate the role of OGA in plant responses to Al toxicity, offering novel theoretical foundations for understanding plant adaptation to acidic soil conditions.","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"177 3","pages":"e70326"},"PeriodicalIF":5.4,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144249234","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}

引用次数: 0

The Alternative Oxidase Pathway Participates in Seagrass Seedling Establishment by Regulating Photosynthetic and Respiratory Metabolism. 替代氧化酶途径通过调节光合和呼吸代谢参与海草幼苗形成。

IF 5.4 2区生物学

Physiologia plantarum Pub Date : 2025-05-01 DOI: 10.1111/ppl.70302

Mengjie Zhang, Litao Zhang, Hu Li, Jing Li, Weiying Luan, Zihao Li, Jianguo Liu

{"title":"The Alternative Oxidase Pathway Participates in Seagrass Seedling Establishment by Regulating Photosynthetic and Respiratory Metabolism.","authors":"Mengjie Zhang, Litao Zhang, Hu Li, Jing Li, Weiying Luan, Zihao Li, Jianguo Liu","doi":"10.1111/ppl.70302","DOIUrl":"https://doi.org/10.1111/ppl.70302","url":null,"abstract":"The roles of the alternative oxidase (AOX) pathway in plant physiology and metabolism are of increasing interest. AOX was found to regulate the growth of Enhalus acoroides seedlings, but its specific mechanism and physiological significance are unclear. In this study, the roles of the AOX pathway during E. acoroides seedling establishment were clarified by investigating the relationships between metabolism and the AOX pathway at the physiological and molecular levels. Results showed that inhibiting the AOX pathway causes the accumulation of reducing equivalents, and further results in the inactivation of the PSII reaction center and destruction of the PSII electron receptor side in E. acoroides seedlings, which decreased photosynthetic activity and increased H2O2 content. Meanwhile, the accumulation of reducing equivalents also restricted mitochondrial respiratory metabolism (including glycolysis, the tricarboxylic acid cycle, the pentose phosphate pathway and oxidative phosphorylation). In addition, when the AOX pathway was inhibited, the gene expressions related to photosynthesis and respiratory metabolism were generally down-regulated. The above results indicate that inhibiting the AOX pathway affected metabolism through disturbing photosynthetic and respiratory metabolic processes, resulting in an inability to satisfy the material (saccharides, proteins, lipids, and nucleotides) and energy requirements of various physiological processes, thus stunting the growth of seagrass seedlings. This study reveals that the AOX pathway accelerates the production of intermediate metabolites in key metabolic pathways through energy redistribution in seagrass, which has a very positive significance for the establishment of seagrass seedlings.","PeriodicalId":20164,"journal":{"name":"Physiologia plantarum","volume":"177 3","pages":"e70302"},"PeriodicalIF":5.4,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144249235","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}

引用次数: 0