Photosynthetica最新文献_第9页

Both uniconazole and 5-aminolevulinic acid increase maize (Zea mays L.) yield by changing its ear morphology and increasing photosynthetic efficiency and antioxidants in saline-alkali land. 在盐碱地上，单硝唑和5-氨基乙酰丙酸均通过改变玉米穗形、提高光合效率和抗氧化剂来提高玉米产量

IF 2.1 4区生物学

Photosynthetica Pub Date : 2022-07-12 eCollection Date: 2022-01-01 DOI: 10.32615/ps.2022.029

L Xu, N J Feng, X L Liang, H H Zhao, S Y Wang, Y Jiang, Y Zhao, D F Zheng

{"title":"Both uniconazole and 5-aminolevulinic acid increase maize (Zea mays L.) yield by changing its ear morphology and increasing photosynthetic efficiency and antioxidants in saline-alkali land.","authors":"L Xu, N J Feng, X L Liang, H H Zhao, S Y Wang, Y Jiang, Y Zhao, D F Zheng","doi":"10.32615/ps.2022.029","DOIUrl":"10.32615/ps.2022.029","url":null,"abstract":"Saline-alkaline stress is one of the most detrimental abiotic stresses that restrict the yield and physiological activity of maize (Zea mays L.). In the present study, maize was planted on saline-alkali land, while 25 mg L-1 uniconazole (S3307) and 40 mg L-1 5-aminolevulinic acid (ALA) were sprayed at the stage of nine expanded leaves. Our results showed that both S3307 and ALA applications significantly increased all ear width, volume, and mass in the maturity stage. Both applications also upregulated photosynthetic efficiency via increasing the chlorophyll content, net photosynthetic rate, transpiration rate, and stomatal conductance, as well as reduced the intercellular CO2 concentration after the silking stage. In addition, both applications upregulated further the antioxidant system via enhancing the activity of antioxidants and contents of soluble protein and sugar, as well as reducing the malondialdehyde content after the silking stage. Thus, both S3307 and ALA applications can improve maize yield in saline-alkali land via enhancing ear morphology and increasing photosynthetic efficiency and antioxidants.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"30 1","pages":"408-419"},"PeriodicalIF":2.1,"publicationDate":"2022-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11558603/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81743484","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

Systematic salt tolerance-related physiological mechanisms of wild soybean and their role in the photosynthetic activity and Na⁺ distribution of grafted soybean plants. 野生大豆系统耐盐生理机制及其在嫁接大豆植株光合活性和Na+分布中的作用

IF 2.1 4区生物学

Photosynthetica Pub Date : 2022-07-11 eCollection Date: 2022-01-01 DOI: 10.32615/ps.2022.030

Z C Xue, Y Wang, J Liu

{"title":"Systematic salt tolerance-related physiological mechanisms of wild soybean and their role in the photosynthetic activity and Na+ distribution of grafted soybean plants.","authors":"Z C Xue, Y Wang, J Liu","doi":"10.32615/ps.2022.030","DOIUrl":"10.32615/ps.2022.030","url":null,"abstract":"Systematic salt tolerance-related physiological mechanisms in roots and shoots of halophyte Dongying wild soybean have not yet been thoroughly studied. In this study, photosynthesis, modulated 820-nm reflection, chlorophyll a fluorescence, and Na+ distribution in cultivated (G mc) and wild (G sw) soybean leaves of grafted soybean plants were investigated after NaCl treatment. Results showed that the decreases in photosynthetic rate, performance index, active P700 content, and plastocyanin reduction were significantly greater in the G sw leaves than those in the G mc leaves. The observed increases in the Na+ concentration in the G sw leaves were likely responsible for the severe decrease in the photosynthetic activity of grafted plants. We suggest that Na+ accumulation in G sw roots, which prevents the transport of Na+ from the roots to the shoots, effectively maintains the concentration of Na+ at a comparatively low level in the leaves to prevent the destruction of the photosynthetic apparatus by salt.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"59 1","pages":"400-407"},"PeriodicalIF":2.1,"publicationDate":"2022-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11558600/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91009798","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

Mitigative effect of 6-benzyladenine on photosynthetic capacity and leaf ultrastructure of maize seedlings under waterlogging stress. 6-苄基腺嘌呤对涝渍胁迫下玉米幼苗光合能力和叶片超微结构的缓解作用

IF 2.1 4区生物学

Photosynthetica Pub Date : 2022-06-21 eCollection Date: 2022-01-01 DOI: 10.32615/ps.2022.027

J Wang, Y L Wang, D Y Wang, J X Huang, Y B Liu, M Zhu, F H Li

{"title":"Mitigative effect of 6-benzyladenine on photosynthetic capacity and leaf ultrastructure of maize seedlings under waterlogging stress.","authors":"J Wang, Y L Wang, D Y Wang, J X Huang, Y B Liu, M Zhu, F H Li","doi":"10.32615/ps.2022.027","DOIUrl":"10.32615/ps.2022.027","url":null,"abstract":"6-Benzyladenine (6-BA) is an artificial synthetic cytokinin, which plays an important role in regulating plant responses to abiotic stress. This study aimed to investigate the mitigative effect of exogenous 6-BA on photosynthetic capacities and leaf ultrastructure under waterlogging stress using two waxy corn inbred lines. The results showed that waterlogging stress disrupted the photosynthesis of waxy corn seedlings. However, exogenous 6-BA alleviated the inhibition caused by waterlogging stress. Under the waterlogging conditions, 6-BA treatment of plants helped preserve the structural integrity of the chloroplasts and retain higher contents of photosynthetic pigments. It also increased the photosynthetic capacity and promoted the openness of stomatal pores. Moreover, exogenous 6-BA promoted photosynthetic activities and the accumulation of carbohydrates. The results revealed that the detrimental effects of waterlogging stress on maize seedlings can be alleviated by 6-BA via modulating photosynthetic activities.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"28 1","pages":"389-399"},"PeriodicalIF":2.1,"publicationDate":"2022-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11558590/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80371333","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

Biochemical, gas exchange, and chlorophyll fluorescence analysis of maize genotypes under drought stress reveals important insights into their interaction and homeostasis. 干旱胁迫下玉米基因型的生化、气体交换和叶绿素荧光分析揭示了它们之间相互作用和动态平衡的重要意义

IF 2.1 4区生物学

Photosynthetica Pub Date : 2022-06-03 eCollection Date: 2022-01-01 DOI: 10.32615/ps.2022.024

G M Singh, S Goldberg, D Schaefer, F Zhang, S Sharma, V K Mishra, J Xu

{"title":"Biochemical, gas exchange, and chlorophyll fluorescence analysis of maize genotypes under drought stress reveals important insights into their interaction and homeostasis.","authors":"G M Singh, S Goldberg, D Schaefer, F Zhang, S Sharma, V K Mishra, J Xu","doi":"10.32615/ps.2022.024","DOIUrl":"10.32615/ps.2022.024","url":null,"abstract":"Many studies have been conducted on maize to study the effect of drought on yield at the flowering stage, but understanding biochemical and photosynthetic response against drought at the seedling stage needs to be well established. Thus, to understand differential changes and interaction of biochemical and photosynthetic parameters at the seedling stage under drought, a greenhouse experiment with twelve maize genotypes under severe drought (30% field capacity) and irrigated (90-100% field capacity) conditions were performed. Drought differentially altered biochemical and photosynthetic parameters in all genotypes. A sharp increase in hydrogen peroxide, malondialdehyde (MDA), and total antioxidant capacity (TAOC) were seen and a positive association between H2O2 and TAOC, and MDA and transpiration rate (E) was observed under drought. Nonphotochemical quenching increased under drought to avoid the photosystem damage. PCA biplot analysis showed that reducing E and increasing photosynthetic efficiency would be a better drought adaptation mechanism in maize at the seedling stage.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"203 1","pages":"376-388"},"PeriodicalIF":2.1,"publicationDate":"2022-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11558602/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80264877","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

László Mustárdy (1945-2022)

IF 2.7 4区生物学

Photosynthetica Pub Date : 2022-05-31 DOI: 10.32615/ps.2022.028

G. Garab

引用次数: 0

Comparative PSII photochemistry of quinoa and maize under mild to severe drought stress.

IF 2.1 4区生物学

Photosynthetica Pub Date : 2022-05-27 eCollection Date: 2022-01-01 DOI: 10.32615/ps.2022.022

C Malan, J M Berner

{"title":"Comparative PSII photochemistry of quinoa and maize under mild to severe drought stress.","authors":"C Malan, J M Berner","doi":"10.32615/ps.2022.022","DOIUrl":"10.32615/ps.2022.022","url":null,"abstract":"Quinoa has been identified as a climate-resilient crop that can overcome unfavorable conditions. This study explores the photochemical efficiency of quinoa compared to maize subjected to drought stress. The JIP-test was used to assess the photochemical efficiency of both crops. Proline content, leaf water potential, and membrane leakage were also determined. The maximum photochemical efficiency (Fv/Fm) did not change for quinoa and maize under moderate stress. However, severe drought conditions resulted in a decline in Fv/Fm in maize but not quinoa. Furthermore, the PSII performance index (PIABS,total) declined steadily in maize soon after the onset of drought stress. The decline in the PIABS,total values for quinoa was only observed after a period of severe drought stress. Membrane leakage was also more prevalent in the maize plants, while quinoa had higher proline contents. This study concluded that both quinoa and maize maintained PSII structure and function under moderate drought conditions. However, only quinoa maintained PSII structure and function under severe drought conditions.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"60 3","pages":"362-371"},"PeriodicalIF":2.1,"publicationDate":"2022-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11558597/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142802058","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

Bacon Ke (1920-2022): a pioneer of primary photochemistry of photosynthesis 柯培根(1920-2022):光合作用初级光化学的先驱

IF 2.7 4区生物学

Photosynthetica Pub Date : 2022-05-26 DOI: 10.32615/ps.2022.026

G. Govindjee, R. Malkin, T. Ogawa

引用次数: 2

Photosynthetic efficiency of young Rhizophora mangle L. in a mangrove in southeastern Brazil. 巴西东南部红树林幼根霉的光合效率

IF 2.1 4区生物学

Photosynthetica Pub Date : 2022-05-17 eCollection Date: 2022-01-01 DOI: 10.32615/ps.2022.025

S S Pascoalini, M M P Tognella, A R Falqueto, M L G Soares

{"title":"Photosynthetic efficiency of young Rhizophora mangle L. in a mangrove in southeastern Brazil.","authors":"S S Pascoalini, M M P Tognella, A R Falqueto, M L G Soares","doi":"10.32615/ps.2022.025","DOIUrl":"10.32615/ps.2022.025","url":null,"abstract":"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 (PITotal), 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 PITotal 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":"337-349"},"PeriodicalIF":2.1,"publicationDate":"2022-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11558604/pdf/","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":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Speed of light-induced stomatal movement is not correlated to initial or final stomatal conductance in rice. 在水稻中，光诱导气孔运动的速度与初始和最终气孔导度无关

IF 2.1 4区生物学

Photosynthetica Pub Date : 2022-05-17 eCollection Date: 2022-01-01 DOI: 10.32615/ps.2022.013

Z Xiong, Q W Luo, D L Xiong, K H Cui, S B Peng, J L Huang

{"title":"Speed of light-induced stomatal movement is not correlated to initial or final stomatal conductance in rice.","authors":"Z Xiong, Q W Luo, D L Xiong, K H Cui, S B Peng, J L Huang","doi":"10.32615/ps.2022.013","DOIUrl":"10.32615/ps.2022.013","url":null,"abstract":"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 (WUEi). 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 WUEi. 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":"350-359"},"PeriodicalIF":2.1,"publicationDate":"2022-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11558595/pdf/","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":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Diurnal photosynthetic performance of two oak species from two provenances in a Mediterranean and a central European common garden. 地中海和中欧共同花园中两个种源的两种橡树的日光合性能

IF 2.1 4区生物学

Photosynthetica Pub Date : 2022-05-12 eCollection Date: 2022-01-01 DOI: 10.32615/ps.2022.023

V Holland, N Reininger, F Bantis, W Brüggemann, K Radoglou, M N Fotelli

{"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 N Fotelli","doi":"10.32615/ps.2022.023","DOIUrl":"10.32615/ps.2022.023","url":null,"abstract":"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":"326-336"},"PeriodicalIF":2.1,"publicationDate":"2022-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11558599/pdf/","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":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0