Photosynthetica最新文献_第4页

Growth light substantially affects both primary and secondary metabolic processes in Catharanthus roseus plants 生长光在很大程度上影响了长春花植物的初级和次级代谢过程

4区生物学

Photosynthetica Pub Date : 2023-10-10 DOI: 10.32615/ps.2023.037

F. GHOLIZADEH, É. DARKÓ, K. BENCZÚR, K.Á. HAMOW, M. DERNOVICS, K. NAGY, T. JANDA, M.R. RADY, G. GOHARI, M. PÁL, V.N. LE, G. SZALAI

{"title":"Growth light substantially affects both primary and secondary metabolic processes in Catharanthus roseus plants","authors":"F. GHOLIZADEH, É. DARKÓ, K. BENCZÚR, K.Á. HAMOW, M. DERNOVICS, K. NAGY, T. JANDA, M.R. RADY, G. GOHARI, M. PÁL, V.N. LE, G. SZALAI","doi":"10.32615/ps.2023.037","DOIUrl":"https://doi.org/10.32615/ps.2023.037","url":null,"abstract":"Common periwinkle (Catharanthus roseus L.) is an important medicinal plant used by the pharmaceutical industry. The present work aimed to determine the effect of low light intensity on the primary and secondary metabolic processes, using various photosynthesis and targeted and untargeted analytical techniques. Growth light had only limited effects on the photosynthetic electron transport processes, although membrane stability seemed slightly higher in plants growing under higher light conditions. The reduced growth light caused a reduction in certain primary metabolites, including amino acids and sugars, and it also reduced the contents of most of the phenolic compounds investigated in the present experiments. Interestingly, the differences in the growth light caused a much less pronounced difference in the alkaloid contents than that found in the flavonoid contents. However, besides the growth light, genotypic differences, most evident in flower colour, also affected some metabolic processes, including primary and secondary processes.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136296283","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

The impact of physiologically relevant temperatures on physical properties of thylakoid membranes: a molecular dynamics study 生理相关温度对类囊体膜物理特性的影响:分子动力学研究

4区生物学

Photosynthetica Pub Date : 2023-10-10 DOI: 10.32615/ps.2023.035

B. FEHÉR, I.K. VOETS, G. NAGY

{"title":"The impact of physiologically relevant temperatures on physical properties of thylakoid membranes: a molecular dynamics study","authors":"B. FEHÉR, I.K. VOETS, G. NAGY","doi":"10.32615/ps.2023.035","DOIUrl":"https://doi.org/10.32615/ps.2023.035","url":null,"abstract":"Thylakoid membranes are energy-converting membranes with a unique lipid composition. Though the membranes are primarily composed of proteins, their photosynthetic function is strongly influenced by the lipid constituents. Here we characterize, with molecular dynamics (MD) simulations, lipid bilayers with compositions representative of plant thylakoid membranes. We determine, in a wide range of temperatures, the physical parameters of the model membranes which are relevant for the photosynthetic function. We found a marked impact of temperature on membrane permeability due to a combination of increased compressibility and curvature of the membrane at elevated temperatures. With increasing temperatures, we observed increasingly smeared transmembrane density profiles of the membrane forming lipid headgroups predicting increased membrane flexibility. The diffusion coefficient of the lipids increased with temperature without apparent specificity for lipid species. Instead of a comprehensive experimental dataset in the relevant temperature range, we quantitatively compared and validated our MD results with MD simulations on a dipalmitoylphosphatidylcholine model system.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136295774","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

Evaluating the effect of grafting methods and rootstocks through the analysis of chlorophyll a fluorescence 通过叶绿素a荧光分析评价嫁接方法和砧木的效果

4区生物学

Photosynthetica Pub Date : 2023-10-05 DOI: 10.32615/ps.2023.029

J. CRASQUE, B. CERRI NETO, M.L.P.B. PINTO, T.R. FERREIRA, A.R. FALQUETO, L.O. ARANTES, J.A. MACHADO FILHO, C.A.S. SOUZA, E.R. SCHMILDT, S. DOUSSEAU-ARANTES

引用次数: 0

Morphophysiological responses of Theobroma cacao L. rootstocks to flooding and post-flooding conditions 可可砧木对水淹和水后胁迫的形态生理响应

4区生物学

Photosynthetica Pub Date : 2023-10-05 DOI: 10.32615/ps.2023.031

M.L.P.B. PINTO, J. CRASQUE, B. CERRI NETO, T.R. FERREIRA, C.A.S. SOUZA, A.R. FALQUETO, T.C. DE SOUZA, J.A. MACHADO FILHO, L.O. ARANTES, S. DOUSSEAU-ARANTES

{"title":"Morphophysiological responses of Theobroma cacao L. rootstocks to flooding and post-flooding conditions","authors":"M.L.P.B. PINTO, J. CRASQUE, B. CERRI NETO, T.R. FERREIRA, C.A.S. SOUZA, A.R. FALQUETO, T.C. DE SOUZA, J.A. MACHADO FILHO, L.O. ARANTES, S. DOUSSEAU-ARANTES","doi":"10.32615/ps.2023.031","DOIUrl":"https://doi.org/10.32615/ps.2023.031","url":null,"abstract":"This study investigates how cocoa rootstocks respond to flooding and post-flooding conditions, offering insights for cocoa plantation sustainability in flood-prone areas due to climate change. We studied Theobroma cacao L. rootstocks for 60 d of flooding and 30 d post-flooding, grafting PS-1319 scions onto five rootstocks (TSH-1188, Cepec-2002, ParĂĄ, Esfip-02, SJ-02). Photochemical performance remained stable across rootstocks, while flooding progressively reduced electron transport efficiency. Photochemical damage emerged after 7 d, worsening occurred at 19 d. Although post-flooding efficiency improved, recovery time was insufficient for full restoration. Stem diameter increased less in Esfip-02. TSH-1188 had the highest stem dry mass during flooding and the most root and total dry mass during post-flooding. SJ-02 had the lowest stem dry mass and post-flooding total dry mass. Principal component analysis revealed stem and root development as a key for recovery. SJ-02 and Esfip-02 showed lower flooding tolerance and recovery, while TSH-1188 and ParĂĄ exhibited higher resilience.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"2010 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134947899","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

Changes in the photosynthetic response of lettuce exposed to toxic element multicontamination under hydroponic conditions 水培条件下有毒元素多重污染生菜光合响应的变化

4区生物学

Photosynthetica Pub Date : 2023-10-05 DOI: 10.32615/ps.2023.034

M. LHOTSKÁ, V. ZEMANOVÁ, D. PAVLÍKOVÁ, F. HNILIČKA

{"title":"Changes in the photosynthetic response of lettuce exposed to toxic element multicontamination under hydroponic conditions","authors":"M. LHOTSKÁ, V. ZEMANOVÁ, D. PAVLÍKOVÁ, F. HNILIČKA","doi":"10.32615/ps.2023.034","DOIUrl":"https://doi.org/10.32615/ps.2023.034","url":null,"abstract":"The effect of toxic element multicontamination on photosynthetic responses was observed in a greenhouse hydroponic culture of lettuce plants (Lactuca sativa var. capitata). The experiment focused only on the combined effect of selected toxic elements without the influence of soil, due to the hydroponic conditions. Pre-cultivated (six-true-leaf stage) plants were grown in control and contaminated hydroponic culture for 14 d. The mix of toxic elements (As, Cd, Pb, and Zn) in the contaminated solution corresponded to the water-soluble fraction of soil from the anthropogenically contaminated Litavka River area, Czech Republic. The plant response was measured by determining the toxic element contents, dry biomass, and gas-exchange parameters. Lettuce accumulated toxic elements predominantly in the roots, with low translocation to the leaves. The uptake of toxic elements harmed photosynthesis and caused a decrease in net photosynthetic rate, transpiration rate, and stomatal conductance. Consequently, the whole dry biomass of the plants decreased. The results show that contamination in hydroponic conditions had an irreversible effect on plant fitness due to direct contact between the roots and contaminated solutions.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134947440","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

Responses of wild Piper species to drought and rehydration cycles considering stomatal closure as a marker of the alarm phase 考虑气孔关闭作为警报期标志的野生胡椒物种对干旱和补水循环的响应

4区生物学

Photosynthetica Pub Date : 2023-10-05 DOI: 10.32615/ps.2023.030

B. CERRI NETO, F.R.N. SILVA, T.R. FERREIRA, J. CRASQUE, L.O. ARANTES, J.A. MACHADO FILHO, T.C. DE SOUZA, A.R. FALQUETO, S. DOUSSEAU-ARANTES

{"title":"Responses of wild Piper species to drought and rehydration cycles considering stomatal closure as a marker of the alarm phase","authors":"B. CERRI NETO, F.R.N. SILVA, T.R. FERREIRA, J. CRASQUE, L.O. ARANTES, J.A. MACHADO FILHO, T.C. DE SOUZA, A.R. FALQUETO, S. DOUSSEAU-ARANTES","doi":"10.32615/ps.2023.030","DOIUrl":"https://doi.org/10.32615/ps.2023.030","url":null,"abstract":"Studies that simulate recurrent drought events with subsequent episodes of rehydration better reflect natural conditions and allow visualization of differential acclimatization responses resulting from memory and tolerance mechanisms. Piper aduncum and Piper tuberculatum were grown in a greenhouse and were subjected to three successive cycles of drought and subsequent rehydration. After suspending irrigation, gas exchanges were measured daily with IRGA. When stomatal conductances close to zero were obtained, the plants were rehydrated and kept irrigated. In P. tuberculatum, stomatal conductance was always higher after periods of rehydration compared to the period before the drought, while the transpiration rate was lower only during the drought. The damage to the photosynthetic apparatus was caused by the influence of the interception of the flow of electrons in the transport chain. We came to the conclusion that the dehydrated plants showed an alert signal, which triggered response mechanisms to prevent or deal with the water stress situation.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134948062","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

Priming of Pisum sativum seeds with stabilized Pluronic P85 nanomicelles: effects on seedling development and photosynthetic function 稳定Pluronic P85纳米胶束对豌豆种子发育和光合功能的影响

4区生物学

Photosynthetica Pub Date : 2023-09-25 DOI: 10.32615/ps.2023.033

S. KRUMOVA, A. PETROVA, D. KOLEVA, S. PETROVA, S. STOICHEV, N. PETROVA, T. TSONEV, P. PETROV, V. VELIKOVA

引用次数: 0

Influence of reduced amounts of sulfoquinovosyl diacylglycerol on the thylakoid membranes of the diatom Thalassiosira pseudonana. 磺基异丙醇二酰基甘油的减量对假海硅藻类囊体膜的影响。

IF 2.1 4区生物学

Photosynthetica Pub Date : 2023-09-05 eCollection Date: 2023-01-01 DOI: 10.32615/ps.2023.032

T Liebisch, M Başoglu, S Jäger, C Büchel

引用次数: 0

Single-cell microfluidics in combination with chlorophyll a fluorescence measurements to assess the lifetime of the Chlamydomonas PSBO protein. 单细胞微流体结合叶绿素a荧光测量评估衣藻PSBO蛋白的寿命。

IF 2.1 4区生物学

Photosynthetica Pub Date : 2023-07-31 eCollection Date: 2023-01-01 DOI: 10.32615/ps.2023.028

E Széles, S Kuntam, A Vidal-Meireles, V Nagy, K Nagy, Á ÁBrahám, L Kovács, S Z Tóth

{"title":"Single-cell microfluidics in combination with chlorophyll a fluorescence measurements to assess the lifetime of the Chlamydomonas PSBO protein.","authors":"E Széles, S Kuntam, A Vidal-Meireles, V Nagy, K Nagy, Á ÁBrahám, L Kovács, S Z Tóth","doi":"10.32615/ps.2023.028","DOIUrl":"10.32615/ps.2023.028","url":null,"abstract":"PSBO is an essential subunit of the oxygen-evolving complex and we recently demonstrated that its lifetime depends on environmental conditions in Chlamydomonas reinhardtii. To assess PSBO lifetime with a high time resolution, we employed (1) a microfluidic platform enabling the trapping of single cells and the parallel measurement of photosynthetic activity, and (2) a nitrate-inducible PSBO amiRNA line. Our microfluidic platform allowed the rapid replacement of the nutrient solution necessary for induction. It also enabled the precise monitoring of the decline in the Fv/Fm value, reflecting PSBO loss. We found that in the dark, at medium and high light intensity, the Fv/Fm value decreased with halftimes of about 25, 12.5, and 5 h, respectively. We also observed that photosynthetic activity was better sustained upon carbon limitation. In the absence of acetate, the halftimes of Fv/Fm diminishment doubled to quadrupled compared with the control, acetate-supplied cultures.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"32 1","pages":"417-424"},"PeriodicalIF":2.1,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11586836/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76537549","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

LHCII - a protein like a 'Swiss Army knife' with many mechanisms and functions. LHCII -一种像“瑞士军刀”一样的蛋白质，具有许多机制和功能。

IF 2.1 4区生物学

Photosynthetica Pub Date : 2023-07-13 eCollection Date: 2023-01-01 DOI: 10.32615/ps.2023.025

E Janik-Zabrotowicz, W I Gruszecki

{"title":"LHCII - a protein like a 'Swiss Army knife' with many mechanisms and functions.","authors":"E Janik-Zabrotowicz, W I Gruszecki","doi":"10.32615/ps.2023.025","DOIUrl":"10.32615/ps.2023.025","url":null,"abstract":"The review highlights the relationship between the molecular organization of the light-harvesting complex of photosystem II (LHCII) and sunlight utilization by higher plants. The molecular form of LHCII switches rapidly and reversibly during diurnal changes of light intensity, from low (ca. 10) to high [ca. 1,000 μmol(photon) m-2 s-1], so the sensitivity of LHCII to light may control the balance between light harvesting and photoprotection state. Our understanding and concept of this mechanism are based on the knowledge of the structure and photophysics of different LHCII molecular forms: monomer, dimer, trimer, and aggregate. It is proposed that LHCII monomers, dimers, and lateral aggregates are fundamental blocks of excess light-dissipation machinery. Trimer is exceptionally well suited to play a physiological role of an antenna complex. A correlation between the LHCII molecular form and the presence of xanthophyll cycle pigment violaxanthin and zeaxanthin in the complex structure is also shown. Moreover, the role of LHCII protein phosphorylation in thylakoid membrane architecture is also discussed. The dual function of LHCII has been studied in the natural thylakoid membranes of chloroplasts, in the artificial lipid-LHCII model membranes, and by suspension of LHCII in a detergent solution.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"92 1","pages":"405-416"},"PeriodicalIF":2.1,"publicationDate":"2023-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11586845/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90871997","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