Photosynthetica最新文献

{"title":"Light intensity affects tolerance of pyrene in Chlorella vulgaris and Scenedesmus acutus","authors":"R. Tomar, R. Atre, D. Sharma, P. Rai-Kalal, A. Jajoo","doi":"10.32615/ps.2022.044","DOIUrl":"https://doi.org/10.32615/ps.2022.044","url":null,"abstract":"Abbreviations : C – control; Chl – chlorophyll; F 0 – minimal fluorescence; F m – maximum fluorescence; F v /F 0 – efficiency of the water- splitting complex; F v /F m – maximal quantum yield of PSII photochemistry; HL – high light; LL – low light; PAHs – polycyclic aromatic hydrocarbons; PYR – pyrene; SP – saturation pulse; Y (II) – quantum yield of PSII; Y (NO) – yield of nonregulated energy dissipation; Y (NPQ) – yield of regulated energy dissipation. Acknowledgments : RST thanks the Council of Scientific and Industrial Research for the CSIR-RA fellowship [09/301/ (0134)/2018-EMR-I]. PR thanks University Grants Commission (UGC), India for awarding UGC–NET Junior Research Fellowship [F.16(DEC.2016)/2017(NET)]. Conflict of interest : The authors declare that they have no conflict of interest. and Scenedesmus acutus . Both species were cultured under low light, LL [50–60 µmol(photon) m –2 s –1 ], and high light, HL [100–110 µmol(photon) m –2 s –1 ] conditions to study the effects of pyrene (PYR) toxicity on growth parameters, the content of biomolecules, chlorophyll content, and photosynthetic efficiency. In the presence of PYR, S. acutus could grow well in LL and HL intensity. On the other hand, C. vulgaris showed a drastic decrease in growth and photosynthesis during HL conditions due to PYR toxicity. Regulation of nonphotochemical and photochemical quenching was responsible for the survival of S. acutus under PYR toxicity in LL and HL conditions. Thus, S. acutus seems to be a more promising candidate for pyrene degradation under varying light conditions.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"3 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79652421","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":"Changes in ultrastructure, photosynthetic abilities, and secondary metabolite due to individual and interactive effects of chromium and ultraviolet-B radiation in Adhatoda vasica","authors":"A. Pandey, D. Jaiswal, M. Agrawal, S. B. Agrawal","doi":"10.32615/ps.2022.042","DOIUrl":"https://doi.org/10.32615/ps.2022.042","url":null,"abstract":"Abbreviations : BCF – bioconcentration factor; C i – intercellular CO 2 concentration; E – transpiration rate; eUV-B – elevated UV-B; F 0 – minimal fluorescence; F m – maximum fluorescence; F m /F 0 – electron transport rate through PSII; F v – variable fluorescence; F v /F 0 – the activity of PSII; F v /F m – maximum quantum yield of PSII; g s – stomatal conductance; P N – net photosynthetic rate; RDM – root dry mass; RSR – root-to-shoot ratio; SDM – shoot dry mass; TF – translocation factor. Acknowledgments : The authors are grateful to the Head of the Department of Botany, Banaras Hindu University, for providing all the necessary laboratory facilities. Coordinator, Centre of Advanced Study (CAS), Department of Botany, Department of Science and Technology (DST-FIST), and Interdisciplinary School of Life Sciences (ISLS) are acknowledged for all research facilities. We are thankful to CSIR-CIMAP, Lucknow, India, for providing plantlets of Adhatoda vasica and Sophisticated Analytical Instrumentation Facility, AIIMS, New Delhi for TEM analysis. University Grants Commission (UGC) and Council of Scientific and Industrial Research (CSIR), India are greatly acknowledged for providing financial support in the form of Senior Research Fellowship to Avantika Pandey and Emeritus Scientist Project to Prof. S.B. Agrawal, respectively. The declare that The study was executed to assess individual and interactive effects of elevated ultraviolet-B (eUV-B) radiation and chromium (Cr) on a medicinal plant Adhatoda vasica Nees. The experiment was conducted under field conditions involving control, Cr, eUV-B, and Cr+eUV-B treatments. The results showed that Cr content was the highest in roots as compared to other parts under Cr+eUV-B. Significant reductions in photosynthetic rate, intercellular CO 2 concentration, and stomatal conductance were observed under all treatments with maximum under Cr+eUV-B. Chlorophyll (Chl) fluorescence parameters showed variable responses under Cr and Cr+eUV-B. Chl content showed reductions under all treatments whereas Chl a / b ratio and carotenoids showed increment under eUV-B and reductions under Cr and Cr+eUV-B. The ultrastructure of leaves showed changes in chloroplasts under treatments. Vasicine (medicinally important secondary metabolite) increased under treatments. Our study revealed that A. vasica showed variable responses towards individual and interactive stress of Cr and eUV-B.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"2 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88028666","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":"Effects of abiotic stress on photosystem II proteins","authors":"M. Landi, L. Guidi","doi":"10.32615/ps.2022.043","DOIUrl":"https://doi.org/10.32615/ps.2022.043","url":null,"abstract":"Chl electron LHC – light-harvesting complex; NPQ – nonphotochemical quenching; OEC – oxygen-evolving complex; q E – energy gradient quenching; q I – photoinhibition quenching; q T – state II–I transition quenching; q Z – zeaxanthin-dependent quenching; ROS – reactive oxygen species. Acknowledgements : The authors are extremely thankful to Prof. Claudia Büchel for the critical revision of the manuscript and her insightful comments and suggestions. The authors are also thankful to Dr. Ermes Lo Piccolo for the graphical support in figure realization. Conflict of interest : The authors declare that they have no conflict of interest.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"70 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77891050","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":"Effect of different LED-lighting quality conditions oncstyleCrocus sativus L.)","authors":"J. Zhu, Y. Zhang, L. Yang, L. Zhou","doi":"10.32615/ps.2022.038","DOIUrl":"https://doi.org/10.32615/ps.2022.038","url":null,"abstract":"","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"77 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80659669","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":"Improvement in the photoprotective capability benefits the productivity of a yellow-green wheat mutant in N-deficient conditions","authors":"X. Zhang, H.X. Li, G. Zhuo, Zhaofeng He, C. Zhang, Z. Shi, C.C. Li, Y. Wang","doi":"10.32615/ps.2022.041","DOIUrl":"https://doi.org/10.32615/ps.2022.041","url":null,"abstract":"Abbreviations : C c – CO 2 concentration inside the chloroplast; C i – intercellular CO 2 concentration; ETRI – electron transport rate of PSI; ETRII – electron transport rate of PSII; F 0 – minimum fluorescence; F 0 '– minimum fluorescence in the actinic light; F m – maximum fluorescence; F m ' – maximum fluorescence in the actinic light; F v /F m – maximum quantum efficiency of PSII photochemistry; g m – mesophyll conductance; g s – stomatal conductance; J a – alternative electron flux; J e(PCO) – electron flux to photorespiratory carbon oxidation; J e(PCR) – electron flux to photosynthetic carbon reduction; J max – light-saturated potential rate of electron transport; J t – electron transport rate; L b – limitation of biochemical capacity; L m – limitation of mesophyll diffusion; LMA – leaf mass per area; L s – limitation of stomatal diffusion; N area – nitrogen content per unit area; N mass – nitrogen content per unit mass; NO – nonregulated heat dissipation; NPQ – nonphotochemical quenching; P700 – primary electron donor of PSI; PIB – post-illumination burst; P m or P m ' – maximum P700 signal measured using saturation light pulse following short far-red pre-illumination in dark or light-adapted state; P N – net photosynthetic rate; PNUE – photosynthetic N-use efficiency; q P – PSII efficiency factor (the fraction of open centers); R d – mitochondrial CO 2 release in the dark; R L – light respiration rate; ROS – reactive oxygen species; V c,max – maximum carboxylation rate limited by Rubisco; Γ* – CO 2 -compensation point; Φ NA – oxidation status of PSI acceptor site; Φ ND – oxidation status of PSI donor site; Φ NO – quantum yield nonregulated heat dissipation; Φ NPQ – quantum yield of nonphotochemical quenching; Φ PSI – quantum yield of PSI photochemistry; Φ PSII – PSII operating efficiency (quantum yield of PSII photochemistry); Φ qP – quantum yield of open centers . Wheat yellow-green mutant Jimai5265yg has a more efficient photosynthetic system and higher productivity than its wild type under N-deficient conditions. To understand the relationship between photosynthetic properties and the grain yield, we conducted a field experiment under different N application levels. Compared to wild type, the Jimai5265yg flag leaves had higher mesophyll conductance, photosynthetic N-use efficiency, and photorespiration in the field without N application. Chlorophyll a fluorescence analysis showed that PSII was more sensitive to photoinhibition due to lower nonphotochemical quenching (NPQ) and higher nonregulated heat dissipation. In N-deficient condition, the PSI acceptor side of Jimai5265yg was less reduced. We proposed that the photoinhibited PSII protected PSI from over-reduction through downregulation of electron transport. PCA analysis also indicated that PSI photoprotection and electron transport regulation were closely associated with grain yield. Our results suggested that the photoprotection mechanism of PSI independent of NPQ was critical fo","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"60 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91024604","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":"Detection of antibiotic and microplastic pollutants in Chrysanthemum coronarium L. based on chlorophyll fluorescence","authors":"M. Y. Zhong, K. Y. Khan, F. L.J., Q. Xia, H. Tang, QU H.J., S. Yuan, J. L. Tan, Y. Guo","doi":"10.32615/ps.2022.035","DOIUrl":"https://doi.org/10.32615/ps.2022.035","url":null,"abstract":"Abbreviations : ChlF – chlorophyll a fluorescence; F i – chlorophyll a fluorescence intensity at the I F j chlorophyll a fluorescence intensity at the m maximal fluorescence yield dark-adapted F minimal fluorescence yield of the dark-adapted variable fluorescence quantum of photochemistry; v quantum of photosystem chlorophyll fluorescence Large amounts of antibiotics and microplastics are used in daily life and agricultural production, which affects not only plant growth but also potentially the food safety of vegetables and other plant products. Fast detection of the presence of antibiotics and microplastics in leafy vegetables is of great interest to the public. In this work, a method was developed to detect sulfadiazine and polystyrene, commonly used antibiotics and microplastics, in vegetables by measuring and modeling photosystem II chlorophyll a fluorescence (ChlF) emission from leaves. Chrysanthemum coronarium L., a common beverage and medicinal plant, was used to verify the developed method. Scanning electron microscopy, transmission electron microscopy, and liquid chromatograph-mass spectrometer analysis were used to show the presence of the two pollutants in the samples. The developed kinetic model could describe measured ChlF variations with an average relative error of 0.6%. The model parameters estimated for the chlorophyll a fluorescence induction kinetics curve (OJIP) induction can differentiate the two types of stresses while the commonly used ChlF OJIP induction characteristics cannot. This work provides a concept to detect antibiotic pollutants and microplastic pollutants in vegetables based on ChlF.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"42 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85191750","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":"Moderate photoinhibition of PSII and oxidation of P700 contribute to chilling tolerance of tropical tree species in subtropics of China","authors":"V. Sunoj, Y. Wen, A. Jajoo, A. W. Short, W. Zeng, N. Elsheery, K. Cao","doi":"10.32615/ps.2022.039","DOIUrl":"https://doi.org/10.32615/ps.2022.039","url":null,"abstract":"– effective photochemical quantum yield of PSII; Y (CEF) – effective quantum yield of CEF; Y (NA) – acceptor-side limitation of PSI; Y (ND) – donor-side limitation of PSI; Y (NO) – yield of regulated heat dissipation of PSII; Y (NPQ) – effective quantum yield of NPQ or regulated nonphotochemical quenching; ΔpH – proton gradient. In the subtropics, a few tropical tree species are distributed and planted for ornamental and horticultural purposes; however, the photosynthesis of these species can be impaired by chilling. This study aimed to understand how these species respond to chilling. Light-dependent and CO 2 assimilation reactions of six tropical tree species from geographically diverse areas, but grown at a lower subtropical site in China, were monitored during a chilling (≤ 10°C). Chilling induced stomatal and nonstomatal effects and moderate photoinhibition of PSII, with severe effect in Ixora chinensis . Woodfordia fruticosa was little affected by chilling, with negligible reduction of photosynthesis and PSII activity, higher cyclic electron flow (CEF), and oxidation state of P700 (P700 + ). Photoinhibition of PSII thus reduced electron flow to P700, while active CEF reduced oxidative damage of PSI and maintained photosynthesis during chilling. Studied parameters revealed that coupling between light-dependent and CO 2 assimilation reactions was enhanced under chilling.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"18 5 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82819103","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":"Photosynthetic mechanism of high yield under an improved wide-narrow row planting pattern in maize","authors":"Xuan-Liang Ge, Y. Chen, Y. Wang, B. Wang, Q. Chao, Y. Yu, X. Gong, Y. Hao, L. Li, Y. Jiang, G. Lv, C. Qian, C. Jiang","doi":"10.32615/ps.2022.032","DOIUrl":"https://doi.org/10.32615/ps.2022.032","url":null,"abstract":"stand; light-use dehydrogenase; phospho pyruvate carboxylase; pyruvate Wide–narrow row maize planting patterns are a popular way to enhance maize yield via improving canopy PAR. To further optimize canopy PAR, we designed an improved wide–narrow row planting pattern (R2) based on the principle of the shortest projection length and the longest illumination of objects on the ground. Compared to the traditional wide–narrow row planting pattern (R1), maize yield increased by about 10% in R2. R2 maize had higher PAR, leaf area index, chlorophyll content, and photosynthetic rates than maize grown in R1. Moreover, compared to maize leaves in R1, the carbon assimilation enzymatic activities were also significantly higher in R2. The higher carbon assimilation enzymatic activity in R2 could account for the increased photosynthetic rate. Thus, the improved wide–narrow row planting pattern could improve photosynthetic performance by enhancing the PAR of the plant canopy, which further promotes the ear number and yield in northeast China.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"26 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74916290","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":"Higher activity of PSI compared to PSII accounts for the beneficial effect of silicon on barley (Hordeum vulgare L.) plants challenged with salinity","authors":"M. Falouti, H. Ellouzi, F. Bounaouara, N. Farhat, A. Aggag, A. Debez, M. Rabhi, C. Abdelly, I. Slama, Walid Zorrig","doi":"10.32615/ps.2022.031","DOIUrl":"https://doi.org/10.32615/ps.2022.031","url":null,"abstract":"","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"8 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84681202","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 decline in the photosynthetic capacity of uppermost leaves in an eggplant canopy grown in a horticultural greenhouse","authors":"K. Nomura, M. Saito, M. Ito, S. Yamane, T. Iwao, I. Tada, T. Yamazaki, S. Ono, D. Yasutake, M. Kitano","doi":"10.32615/ps.2022.040","DOIUrl":"https://doi.org/10.32615/ps.2022.040","url":null,"abstract":"Acknowledgments : This study was supported by a Cabinet Office grant-in-aid, the Advanced Next-Generation Greenhouse Horticulture by IoP (Internet of Plants), Japan, and JSPS KAKENHI grant numbers JP21K14946 and JP22H02468. The authors thank Nana Miyatake and Chiyuki Yamanaka for assisting with the measurements. Conflict of interest : The authors declare that they have no conflict of interest. representing photosynthetic capacity, namely, the maximal carboxylation maximal electron transport triose phosphate-utilization rate ( T p ), can vary depending on various factors. The present study investigated diurnal variations in V cmax , J max , and T p of uppermost leaves of soil-grown, well-watered eggplant in a greenhouse based on the simultaneous measurements of leaf gas exchange and chlorophyll fluorescence. The values of net photosynthetic rates and electron transport rates plotted against intercellular CO 2 concentrations were noticeably higher in the morning than in the afternoon. Significant differences were detected among the values of V cmax , J max , and T p obtained at different times of day (08:30, 11:00, 13:30, and 16:00 h). All three parameters tended to decline as the time of day advanced; compared to the values at 08:30 h, V cmax , J max , and T p declined by approximately 15% at 16:00 h. Among the three parameters, T p appeared to be the most sensitive to time.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"42 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84259176","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}