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Biochar alleviates single and combined effects of salinity and drought stress in faba bean plants. 生物碳可减轻蚕豆植物受盐碱和干旱胁迫的单一和综合影响。
IF 2.1 4区 生物学
Photosynthetica Pub Date : 2024-06-27 eCollection Date: 2024-01-01 DOI: 10.32615/ps.2024.019
I Rajhi, R Nefissi Ouertani, N Ferchichi, B Khiari, L El-Bassi, H Mhadhbi
{"title":"Biochar alleviates single and combined effects of salinity and drought stress in faba bean plants.","authors":"I Rajhi, R Nefissi Ouertani, N Ferchichi, B Khiari, L El-Bassi, H Mhadhbi","doi":"10.32615/ps.2024.019","DOIUrl":"10.32615/ps.2024.019","url":null,"abstract":"<p><p>This study aimed to evaluate the impact of four biochar concentrations (0, 2, 5, and 8%) on single and interactive effects of salinity and drought stresses on the morphological, physiological, and photosynthetic parameters of faba bean plants. PCA analysis showed that plants displayed different behavior under non-stressed and stressed conditions. The most discriminating quantitative characters were related to plant biomass production and photosynthesis, especially shoot dry mass, root dry mass, plant fresh mass, internal CO<sub>2</sub> concentration, net CO<sub>2</sub> assimilation rate, and relative water content. The obtained results confirm the biochar's important role in promoting plant growth under normal or stressed conditions. Thus, a better understanding of the impact of biochar on plant growth under drought and salinity stresses will be beneficial for sustainable agriculture.</p>","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"62 2","pages":"221-231"},"PeriodicalIF":2.1,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11613832/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142801361","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
Letter to the Editor.
IF 2.1 4区 生物学
Photosynthetica Pub Date : 2024-06-24 eCollection Date: 2024-01-01 DOI: 10.32615/ps.2024.024
H M Kalaji
{"title":"Letter to the Editor.","authors":"H M Kalaji","doi":"10.32615/ps.2024.024","DOIUrl":"https://doi.org/10.32615/ps.2024.024","url":null,"abstract":"","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"62 2","pages":"212"},"PeriodicalIF":2.1,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11613826/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142801690","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
Revisiting the nonregulatory, constitutive nonphotochemical quenching of the absorbed light energy in oxygenic photosynthetic organisms.
IF 2.1 4区 生物学
Photosynthetica Pub Date : 2024-05-27 eCollection Date: 2024-01-01 DOI: 10.32615/ps.2024.022
G Garab
{"title":"Revisiting the nonregulatory, constitutive nonphotochemical quenching of the absorbed light energy in oxygenic photosynthetic organisms.","authors":"G Garab","doi":"10.32615/ps.2024.022","DOIUrl":"10.32615/ps.2024.022","url":null,"abstract":"<p><p>The present paper aims to open discussion on the information content, physical mechanism(s), and measuring protocols to determine the partitioning of the absorbed light energy in oxygenic photosynthetic organisms. Revisiting these questions is incited by recent findings discovering that PSII, in addition to its open and closed state, assumes a light-adapted charge-separated state and that chlorophyll <i>a</i> fluorescence induction (ChlF), besides the photochemical activity of PSII, reflects the structural dynamics of its reaction center complex. Thus, the photochemical quantum yield of PSII cannot be determined from the conventional ChlF-based protocol. Consequently, the codependent quantity - the quantum yield of the so-called nonregulatory constitutive nonphotochemical quenching (npq) - loses its physical meaning. Processes beyond photochemistry and regulatory npq should be identified and characterized by multifaceted studies, including ChlF. Such investigations may shed light on the putative roles of dissipation and other energy-consuming events in the stress physiology of photosynthetic machinery.</p>","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"62 2","pages":"204-208"},"PeriodicalIF":2.1,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11613829/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142801693","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
Changes of Cd content in chloroplasts are mirrored by the activity of photosystem I, but not by photosystem II.
IF 2.1 4区 生物学
Photosynthetica Pub Date : 2024-05-07 eCollection Date: 2024-01-01 DOI: 10.32615/ps.2024.018
E A Lysenko, V V Kusnetsov
{"title":"Changes of Cd content in chloroplasts are mirrored by the activity of photosystem I, but not by photosystem II.","authors":"E A Lysenko, V V Kusnetsov","doi":"10.32615/ps.2024.018","DOIUrl":"10.32615/ps.2024.018","url":null,"abstract":"<p><p>We searched for a direct Cd action on the photosynthetic electron transport chain using induced chlorophyll fluorescence and P<sub>700</sub> light absorption. Young barley and maize plants were treated with Cd in concentrations of toxic (80 μM) and nearly lethal (250 μM). The maximal and relative photochemical activities of PSI, its major limitation at the donor side, and partially acceptor-side limitation of PSII changed in agreement with Cd accumulation in the corresponding chloroplasts. Acceptor-side limitation of PSII increased with a direct Cd action at 80 μM that was overcome with an indirect Cd action at 250 μM. These alterations can be explained by Cd/Cu substitution in plastocyanin. The photochemical and nonphotochemical quenching by PSII varied diversely which cannot be explained unambiguously by any mechanism. The limitations of PSI [Y<sub>(ND)</sub>, Y<sub>(NA)</sub>] and PSII (q<sub>C</sub>) were compared for the first time. They were ranged: Y<sub>(NA)</sub> < q<sub>C</sub> < Y<sub>(ND)</sub>.</p>","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"62 2","pages":"187-203"},"PeriodicalIF":2.1,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11613828/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142801569","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
Heterocapsa cf. bohaiensis (dinoflagellate): identification and response to nickel and iron stress revealed through chlorophyll a fluorescence Heterocapsa cf. bohaiensis（甲藻）：通过叶绿素 a 荧光进行鉴定并揭示其对镍和铁胁迫的反应
IF 2.7 4区 生物学
Photosynthetica Pub Date : 2024-01-02 DOI: 10.32615/ps.2023.038
V. Mériot, A. Roussel, N. Brunet, N. Chomerat, G. Bilien, L. LE DÉAN, V. Berteaux-Lecellier, N. Coulombier, N. Lebouvier, T. Jauffrais
{"title":"Heterocapsa cf. bohaiensis (dinoflagellate): identification and response to nickel and iron stress revealed through chlorophyll a fluorescence","authors":"V. Mériot, A. Roussel, N. Brunet, N. Chomerat, G. Bilien, L. LE DÉAN, V. Berteaux-Lecellier, N. Coulombier, N. Lebouvier, T. Jauffrais","doi":"10.32615/ps.2023.038","DOIUrl":"https://doi.org/10.32615/ps.2023.038","url":null,"abstract":"","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"48 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139452865","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
Monitoring the photosynthetic activity at single-cell level in Haematococcus lacustris 在单细胞水平监测漆膜血球菌的光合作用活动
IF 2.7 4区 生物学
Photosynthetica Pub Date : 2023-12-19 DOI: 10.32615/ps.2023.042
P. Patil, K. Nagy, Á. Ábrahám, I. Vass, M. Szabó
{"title":"Monitoring the photosynthetic activity at single-cell level in Haematococcus lacustris","authors":"P. Patil, K. Nagy, Á. Ábrahám, I. Vass, M. Szabó","doi":"10.32615/ps.2023.042","DOIUrl":"https://doi.org/10.32615/ps.2023.042","url":null,"abstract":"","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"9 24","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138959972","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: 1
Microdomains heterogeneity in the thylakoid membrane proteins visualized by super-resolution microscopy 用超分辨率显微镜观察类囊体膜蛋白的微域异质性
IF 2.7 4区 生物学
Photosynthetica Pub Date : 2023-12-19 DOI: 10.32615/ps.2023.043
R. Kaňa, B. Šedivá, O. Prášil
{"title":"Microdomains heterogeneity in the thylakoid membrane proteins visualized by super-resolution microscopy","authors":"R. Kaňa, B. Šedivá, O. Prášil","doi":"10.32615/ps.2023.043","DOIUrl":"https://doi.org/10.32615/ps.2023.043","url":null,"abstract":"","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":" 27","pages":""},"PeriodicalIF":2.7,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138961729","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: 1
Editorial.
IF 2.1 4区 生物学
Photosynthetica Pub Date : 2023-12-19 eCollection Date: 2023-01-01 DOI: 10.32615/ps.2023.044
P H Lambrev, T Janda
{"title":"Editorial.","authors":"P H Lambrev, T Janda","doi":"10.32615/ps.2023.044","DOIUrl":"10.32615/ps.2023.044","url":null,"abstract":"","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"61 4","pages":"398-404"},"PeriodicalIF":2.1,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11586841/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142794770","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
Photosynthetic reaction center/graphene bio-hybrid for low-power optoelectronics 用于低功率光电子学的光合反应中心/石墨烯生物杂化材料
4区 生物学
Photosynthetica Pub Date : 2023-11-10 DOI: 10.32615/ps.2023.041
J. VUJIN, T. SZABÓ, R. PANAJOTOVIC, A.G. VÉGH, L. RINYU, L. NAGY
{"title":"Photosynthetic reaction center/graphene bio-hybrid for low-power optoelectronics","authors":"J. VUJIN, T. SZABÓ, R. PANAJOTOVIC, A.G. VÉGH, L. RINYU, L. NAGY","doi":"10.32615/ps.2023.041","DOIUrl":"https://doi.org/10.32615/ps.2023.041","url":null,"abstract":"Photosynthetic reaction center (pRC) purified from <i>Rhodobacter sphaeroides</i> 2.4.1 purple bacteria was deposited on a graphene carrier exfoliated from the liquid phase and layered on the surface of SiO<sub>2</sub>/Si substrate for optoelectronic application. Light-induced changes in the drain-source current <i>vs</i>. gate voltage are demonstrated. Dried photosynthetic reaction centers/graphene composite on SiO<sub>2</sub>/Si shows a photochemical/-physical activity, as a result of interaction with the current flow in the graphene carrier matrix. The current changes are sensitive to light, due to the contribution from the charge separation in the pRC, and to the applied gate and drain-source voltages.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"120 32","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135137723","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
Exogenous calcium-alleviating effect on sodium salt-induced phytotoxicity associated with changes in photosynthetic characteristics of wheat seedlings 外源钙缓解钠盐诱导小麦幼苗光合特性变化对植物毒性的影响
4区 生物学
Photosynthetica Pub Date : 2023-11-06 DOI: 10.32615/ps.2023.039
Y. ZHANG, G.M. LIU, Z.F. WANG, A.M. ZHANG, Y.L. YANG
{"title":"Exogenous calcium-alleviating effect on sodium salt-induced phytotoxicity associated with changes in photosynthetic characteristics of wheat seedlings","authors":"Y. ZHANG, G.M. LIU, Z.F. WANG, A.M. ZHANG, Y.L. YANG","doi":"10.32615/ps.2023.039","DOIUrl":"https://doi.org/10.32615/ps.2023.039","url":null,"abstract":"To evaluate the Ca-alleviating effect on sodium salt-induced phytotoxicity, wheat (Triticum aestivum L.) cultivar Xihan 3 seedlings were treated with 150 mM NaCl, CaCl2 (0.1, 0.5, and 1 mM), Ca2+-channel blocker LaCl3, and/or Ca2+ chelator, ethylene glycol tetraacetic acid (EGTA) alone or in combination, to investigate seedling growth and photosynthetic characteristics. NaCl (150 mM) exposure alone suppressed a growth of seedling, weakened photosynthetic efficiency and chlorophyll (Chl) fluorescence parameters, reduced photosynthetic pigments, Ca2+ and calmodulin (CaM) contents, and downregulated TaCaM expression in wheat leaves. The opposite changes of these parameters were caused by 0.5 or 1 mM CaCl2 treatments alone. Moreover, 0.5 or 1 mM CaCl2 application effectively alleviated sodium salt-induced changes of these parameters, which was blocked by LaCl3 or EGTA. Therefore, exogenous Ca presence effectively promoted the growth of NaCl-stressed wheat seedlings through the enhancement of photosynthesis and Chl synthesis mediated by the Ca-CaM signal.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"16 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135634143","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
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