Photosynthetica最新文献

{"title":"Photosynthetic efficiency of young Rhizophora mangle L. in a mangrove in southeastern Brazil","authors":"S. S. Pascoalini, M. Tognella, A. R. Falqueto, M. Soares","doi":"10.32615/ps.2022.025","DOIUrl":"https://doi.org/10.32615/ps.2022.025","url":null,"abstract":"DI /RC – dissipated energy flux per RC; E – transpiration rate; ET 0 /RC – electron transport flux per RC; F 0 – initial fluorescence; F m – maximum fluorescence; F v /F 0 – number and size of active photosynthetic RC; g s – stomatal conductance; GVES – Great Vitória Estuarine System; OM – organic matter; PI abs – performance index for energy conservation from exciton to the reduction of intersystem electron acceptors; PI Total – performance index for energy conservation from exciton to the reduction of PSI end acceptors; P N – net photosynthetic rate; Q leaf – luminous intensity incident on the leaf surface; TR 0 /RC – trapped energy flux per RC; WUE – water-use efficiency; δR 0 – efficiency with which an electron from the intersystem reduces the final acceptor of PSI; φD 0 – maximum efficiency of nonphotochemical de-excitation; φE 0 – q uantum yield for electron transport; φP 0 – maximal quantum yield of PSII photochemistry; Ψ 0 – the probability of electron transport further than Q A– . The study proposes to evaluate the photosynthetic plasticity of Rhizophora mangle L. in four mangrove sites distributed along with the Great Vitória Estuarine System. The variation in organic matter content, which implies the higher essential nutrient availability, contributed to better energy flux performance related to electron transport. Furthermore, salinity damaged the reaction centers (RC), since the site with the highest salinity showed changes in the number and size of active photosynthetic RC and in the specific energy flows per active RC (absorption flux, trapped energy flux, and dissipated energy flux), but the plasticity of the species in response to salt stress was confirmed by the increase of performance index for energy conservation ( PI Total ), net photosynthetic rate ( P N ), and the water-use efficiency (WUE). Also, the results showed that the luminous intensity available compromises the functionality of PSII, in turn, it increases WUE. The results indicate the effect of the chlorophyll a content, which provides more substrate for light absorption, on the electron flow and PI Total is related to P N and WUE. The study indicates the ecological plasticity of R. mangle to the conditions of the evaluated area.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"18 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90695494","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":"Speed of light-induced stomatal movement is not correlated to initial or final stomatal conductance in rice","authors":"Z. Xiong, Q. Luo, D. Xiong, K. Cui, S. Peng, J. Huang","doi":"10.32615/ps.2022.013","DOIUrl":"https://doi.org/10.32615/ps.2022.013","url":null,"abstract":"Abbreviations : C i – intercellular CO 2 concentration; C if – final intercellular CO 2 concentration; g s – stomatal conductance; g s,300 – stomatal conductance at 300 s of induction; g sf – final stomatal conductance; g si – initial stomatal conductance; LB – transient biochemical limitation; LS – transient stomatal limitation; P f – final photosynthetic rate; P i – initial photosynthetic rate; P N – photosynthetic rate; P 50 of g s – the time taken for g s to increase 50% of the difference between the first and final values; P 90 of g s – the time taken for g s to increase 90% of the difference between the first and final values; P 50 of P N – the time taken for P N to increase 50% of the difference between the first and final values; P 90 of P N – the time taken for P N to increase 90% of the difference between the first and final values; P 300 – photosynthetic rate at 300 s of induction; R d – dark respiration rate; W f – final intrinsic water-use efficiency. W i – initial intrinsic water-use efficiency; WUE i – intrinsic water-use efficiency; Γ * – CO 2 -compensation point in the absence of photorespiration. Acknowledgments : This work was supported by the National Natural Science Foundation of China (31671620). Conflict of interest : The authors declare that they have no conflict of interest. In nature, plants are often confronted with wide variations in light intensity, which may cause a massive carbon loss and water waste. Here, we investigated the response of photosynthetic rate and stomatal conductance to fluctuating light among ten rice genotypes and their influence on plant acclimation and intrinsic water-use efficiency (WUE i ). Significant differences were observed in photosynthetic induction and stomatal kinetics across rice genotypes. However, no significant correlation was observed between steady-state and non-steady-state gas exchange. Genotypes with a greater range of steady-state and faster response rate of the gas exchange showed stronger adaptability to fluctuating light. Higher stomatal conductance during the initial phase of induction had little effect on the photosynthetic rate but markedly decreased the plant WUE i . Clarification of the mechanism influencing the dynamic gas exchange and synchronization between photosynthesis and stomatal conductance under fluctuating light may contribute to the improvement of photosynthesis and water-use efficiency in the future.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"220 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86678824","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":"Diurnal photosynthetic performance of two oak species from two provenances in a Mediterranean and a central European common garden","authors":"V. Holland, N. Reininger, F. Bantis, W. Brüggemann, K. Radoglou, M. Fotelli","doi":"10.32615/ps.2022.023","DOIUrl":"https://doi.org/10.32615/ps.2022.023","url":null,"abstract":"Abbreviations : DOY – day of the year; g s – stomatal conductance; OLY – Olympiada/Greece; PI abs – performance index on absorption basis; P Nmax – light-saturated net photosynthetic rate; RC/ABS – active reaction centers on absorption base; SWA – Schwanheim/ Germany; WUE – water-use efficiency; φP 0 – F v /F m – maximum quantum efficiency of the reduction of Q A ; ψE 0 – the probability that an absorbed photon leads to a reduction further than Q A . Acknowledgments : The authors are thankful to F. Lyrou, F. Süßel, and S. Ströll for their assistance in the field campaigns. We acknowledge the City of Frankfurt, especially H. Scheel, for the support in the establishment and management of the German common garden and Hellas Gold SA, especially D. Ballas, for the provision of climate data. Finally, we thank Li-cor Biosciences GmbH (Bad Homburg, Germany) and particularly D. Facius and O. Marx for the kind provision of technical support during the gas-exchange measurements in Germany. This study was financially supported by the project IKYDA-FUTUREOAKS Oaks may contribute to the stabilization of European forests under climate change. We utilized two common gardens established in contrasting growth regimes, in Greece (Olympiada) and Germany (Schwanheim), to compare the diurnal photosynthetic performance of a Greek and an Italian provenance of two Mediterranean oaks ( Quercus pubescens and Q. frainetto ) during the 2019 growing season. Although the higher radiation in the southern common garden led to a strong midday depression of chlorophyll a fluorescence parameters (maximum quantum efficiency of PSII, performance index on absorption basis), comparable light-saturated net photosynthetic rates were achieved in both study areas. Moreover, both species and provenances exhibited analogous responses. Q. pubescens had enhanced chlorophyll a fluorescence traits but similar photosynthetic rates compared to Q. frainetto , whereas the provenances did not differ. These findings indicate the high photosynthetic efficiency of both oaks under the current climate in Central Europe and their suitability for assisted migration schemes.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"2017 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87856147","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":"Updating the occurrence of crassulacean acid metabolism (CAM) in the genus Clusia through carbon isotope analysis of species from Colombia","authors":"P. Pachon, K. Winter, E. Lasso","doi":"10.32615/ps.2022.018","DOIUrl":"https://doi.org/10.32615/ps.2022.018","url":null,"abstract":"the are the Los for funds for other research expenses (INV-2019-84-1805). Dr. Ben Turner with the isotope analysis at STRI. Dr. Hammel, Dr. Calderon Saenz, and helped with the identification of some of the Clusia plants; Narda Triviño provided comments on previous versions of the manuscript, and Garzón and Camargo supported the GIS analysis. interest The they have no conflict of interest.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"37 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86778850","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":"Response of upland cotton (Gossypium hirsutum L.) leaf chlorophyll content to high heat and low-soil water in the Arizona low desert","authors":"A. Thompson, M. Conley, M. Herritt, K. Thorp","doi":"10.32615/ps.2022.014","DOIUrl":"https://doi.org/10.32615/ps.2022.014","url":null,"abstract":"CWSI – crop water stress index; DOY – day of year; H – height; L1 – level one; L2 – level two; LAI – leaf area index; NDVI – normalized difference vegetation index; PD – planting dates; RTK – real time kinematic; SEM – structural equation modeling; Ta – ambient temperature; Tc – canopy temperature; TRT – treatment; UTM – universal transverse mercator. Acknowledgments : We would like to thank Matthew McGuire, Paloma Fajardo, Dusti Baker, Scott Machtley, Sharette Rockholt, Kathy Johnson, Suzette Maneely, Pernell Tomasi, Sara Harders, Matthew Hagler, and Melissa Stefanek for assistance with data collections and field management; and Mike Roybal and Bill Luckett for assistance with proximal sensing data handling and management. This work was supported by a Cotton Incorporated Research Grant 13-738 and the United States Department of Agriculture-Agricultural Research Service 2020-2100-013-00D. Conflict of interest : The authors declare that they have no conflict of interest. The sustainable production of upland cotton, an economically important fiber crop, is threatened by changing environmental factors including high temperatures and low-soil water content. Both high heat and low-soil water can reduce net photosynthesis resulting in low fiber yields or poor fiber quality. Leaf chlorophyll content has a direct relationship with photosynthetic rate. Understanding how high heat and low-soil water affect chlorophyll content can identify opportunities for breeding improvement that will lead to sustainable fiber yields. A two-year field trial located in Maricopa Arizona measured leaf chlorophyll content, available soil water, ambient air temperatures, and cotton growth measurements collected by a high-clearance tractor equipped with proximal sensors. The results showed that low-soil water significantly increased leaf chlorophyll content, while high temperatures significantly reduced content. Structured equation modeling revealed that cotton may divert available resources to leaf area and chlorophyll content for the production of photosynthates during periods of high temperatures.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"78 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79230882","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":"Tribute to Jean Lavorel (1928-2021), an outstanding experimenter and a brilliant theorist of photosynthesis","authors":"G. Govindjee, Y. Kouchkovsky, G. Garab","doi":"10.32615/ps.2022.021","DOIUrl":"https://doi.org/10.32615/ps.2022.021","url":null,"abstract":"Department of Plant Biology, Department of Biochemistry and Center of Biophysics & Quantitative Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA* Centre National de la Recherche Scientifique (CNRS), 7 rue A. Pécard, 91190 Gif-sur-Yvette, France** Institute of Plant Biology, Biological Research Centre, Eötvös Loránd Research Network, 6726 Szeged, Hungary*** Department of Physics, Faculty of Science, University of Ostrava, 710 00 Ostrava, Czech Republic#","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"25 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90141656","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":"Upregulation of the mitochondrial alternative oxidase pathway improves PSII function and photosynthetic electron transport in tomato seedlings under chilling stress","authors":"J. Zeng, Wenlang Hu, X. Hu, H. Tao, L. Zhong, L. Liu","doi":"10.32615/ps.2022.019","DOIUrl":"https://doi.org/10.32615/ps.2022.019","url":null,"abstract":"","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"42 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78627527","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":"The role of photosynthetic activity in the regulation of flg22-induced local and systemic defence reaction in tomato","authors":"Z. Czékus, P. Koprivanacz, A. Kukri, N. Iqbal, A. Ördög, P. Poór","doi":"10.32615/ps.2022.015","DOIUrl":"https://doi.org/10.32615/ps.2022.015","url":null,"abstract":"","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"33 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85114637","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":"Vertical profile of photosynthetic CO2 response within rice canopy","authors":"Ying Lv, Y. Pan","doi":"10.32615/ps.2022.011","DOIUrl":"https://doi.org/10.32615/ps.2022.011","url":null,"abstract":"","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"264 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73353671","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":"Leaf structure and photosynthesis in Populus alba under naturally fluctuating environments","authors":"X. Lin, X. Wang, Q. Zeng, Q. Yang","doi":"10.32615/ps.2022.012","DOIUrl":"https://doi.org/10.32615/ps.2022.012","url":null,"abstract":"","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"1 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85397072","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}