Photosynthetica最新文献

On "P750s" in cyanobacteria: A historical perspective. 蓝藻中的 "P750s"：历史视角。

IF 2.1 4区生物学

Photosynthetica Pub Date : 2024-12-18 eCollection Date: 2024-01-01 DOI: 10.32615/ps.2024.042

G Govindjee, L O Björn, R E Blankenship

引用次数: 0

Impact of exogenous rhamnolipids on plant photosynthesis and biochemical parameters under prolonged heat stress. 外源鼠李糖脂对长时间热胁迫下植物光合作用及生化参数的影响

IF 2.1 4区生物学

Photosynthetica Pub Date : 2024-12-17 eCollection Date: 2024-01-01 DOI: 10.32615/ps.2024.041

M A Bouchrati, S Villaume, J F Guise, I Feussner, N Vaillant-Gaveau, S Dhondt-Cordelier

引用次数: 0

Using hyperspectral reflectance to detect changes in photosynthetic activity in Atractylodes chinensis leaves as a function of decreasing soil water content. 利用高光谱反射率检测白术叶片光合作用活性随土壤含水量降低而发生的变化。

IF 2.1 4区生物学

Photosynthetica Pub Date : 2024-12-05 eCollection Date: 2024-01-01 DOI: 10.32615/ps.2024.040

J Liu, Y Wang, X M Lin, Z C Xue, F R Zeng

{"title":"Using hyperspectral reflectance to detect changes in photosynthetic activity in Atractylodes chinensis leaves as a function of decreasing soil water content.","authors":"J Liu, Y Wang, X M Lin, Z C Xue, F R Zeng","doi":"10.32615/ps.2024.040","DOIUrl":"10.32615/ps.2024.040","url":null,"abstract":"Application of hyperspectral reflectance technology to track changes in photosynthetic activity in Atractylodes chinensis (A. chinensis) remains underexplored. This study aimed to investigate the relationship between hyperspectral reflectance and photosynthetic activity in the leaves of A. chinensis in response to a decrease in soil water content. Results demonstrated that the reflectance in both the visible light and near-infrared bands increased in conjunction with reduced soil water content. The derived vegetable indices of photochemical reflection index (PRI) and the pigment-specific simple ratio of chlorophyll b (PSSRb) gradually decreased. In contrast, the normalized difference in water index (NWI) and water index (WI) increased. Moreover, significant correlations were observed between PRI, PSSRb, WI, and NWI and photosynthetic activity indices, namely photosynthetic rate and total performance index. Consequently, hyperspectral reflection represents a productive approach for evaluating the influence of water deficit on photosynthetic activity in A. chinensis leaves.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"62 4","pages":"372-380"},"PeriodicalIF":2.1,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11726290/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142984348","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

Chloroplast antioxidant reactions associated with zinc-alleviating effects on iron toxicity in wheat seedlings. 叶绿体抗氧化反应与锌对小麦幼苗铁毒性的缓解作用有关。

IF 2.1 4区生物学

Photosynthetica Pub Date : 2024-12-05 eCollection Date: 2024-01-01 DOI: 10.32615/ps.2024.038

Y L Xu, J Y Guo, Z Zhang, R R Ma, H Ma, Y Zhang, Y L Yang

{"title":"Chloroplast antioxidant reactions associated with zinc-alleviating effects on iron toxicity in wheat seedlings.","authors":"Y L Xu, J Y Guo, Z Zhang, R R Ma, H Ma, Y Zhang, Y L Yang","doi":"10.32615/ps.2024.038","DOIUrl":"10.32615/ps.2024.038","url":null,"abstract":"This study aimed to explore the mechanism by which Zn retards Fe toxicity by analyzing the morphological, photosynthetic, and chloroplast physiological parameters of wheat seedlings treated with either single or combined Zn and Fe. Different behavior of the seedlings was observed under untreated and treated conditions. The most discriminating quantitative traits were associated with leaf area, biomass dry mass and fresh mass, net photosynthetic rate, intercellular CO2 concentration, stomatal conductance, transpiration rate of seedlings, Hill reaction, Mg2+-ATPase and Ca2+-ATPase activities, malondialdehyde and O2 ·- contents, and glutathione reductase, ascorbate peroxidase, peroxidase, and superoxide dismutase activities and their gene expression in the seedling chloroplast. The obtained findings suggest the important function of an appropriate Zn concentration in preventing Fe toxicity. Therefore, a thorough evaluation of the effects of Zn on Fe-stressed plant growth is beneficial for sustainable agriculture.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"62 4","pages":"381-392"},"PeriodicalIF":2.1,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11726291/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142984128","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

Ascorbic acid is involved in melatonin-induced salinity tolerance of maize (Zea mays L.) by regulating antioxidant and photosynthetic capacities. 抗坏血酸通过调节抗氧化和光合能力参与褪黑素诱导的玉米耐盐性。

IF 2.1 4区生物学

Photosynthetica Pub Date : 2024-12-03 eCollection Date: 2024-01-01 DOI: 10.32615/ps.2024.039

M Zhu, T Guo, Y B Liu, R Xiao, T Yu, J X Huang, W L Du, X M Zhong, B Song, F H Li

{"title":"Ascorbic acid is involved in melatonin-induced salinity tolerance of maize (Zea mays L.) by regulating antioxidant and photosynthetic capacities.","authors":"M Zhu, T Guo, Y B Liu, R Xiao, T Yu, J X Huang, W L Du, X M Zhong, B Song, F H Li","doi":"10.32615/ps.2024.039","DOIUrl":"10.32615/ps.2024.039","url":null,"abstract":"Melatonin (MT), an indole compound, can boost plant growth under abiotic stress conditions. This experiment aims to elucidate the synergistic effect of MT and ascorbic acid (AsA) in mitigating salinity stress by assessing the photosynthetic and antioxidant capacity of the maize inbred lines H123 and W961. The results indicated that exogenous MT and AsA significantly improved photosynthetic efficiency and biomass of maize under salinity stress. Additionally, exogenous MT and AsA also improved antioxidant enzyme activities, promoted regeneration of AsA and GSH, decreased reactive oxygen species contents, suppressed Na+ accumulation, and improved the K+/Na+ ratio of maize seedlings. Additionally, the AsA inhibitor lycorine decreased the endogenous content of AsA and eliminated the positive effects of MT, while the MT inhibitor p-chlorophenyl alanine (CPA) reduced the endogenous content of MT, which could not eliminate the promoting effects of AsA. The results suggested that AsA may act as a downstream signal involved in the regulatory effects of MT on maize under salinity stress.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"62 4","pages":"361-371"},"PeriodicalIF":2.1,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11726288/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142983139","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

Hydraulic conductivity and photosynthetic capacity of seedlings of Coffea canephora genotypes. 可可豆基因型幼苗的水导率和光合作用能力。

IF 2.1 4区生物学

Photosynthetica Pub Date : 2024-11-11 eCollection Date: 2024-01-01 DOI: 10.32615/ps.2024.031

J A Machado Filho, P R Costa, L DE O Arantes, S Dousseau-Arantes, W P Rodrigues, J Crasque, E Campostrini

{"title":"Hydraulic conductivity and photosynthetic capacity of seedlings of Coffea canephora genotypes.","authors":"J A Machado Filho, P R Costa, L DE O Arantes, S Dousseau-Arantes, W P Rodrigues, J Crasque, E Campostrini","doi":"10.32615/ps.2024.031","DOIUrl":"10.32615/ps.2024.031","url":null,"abstract":"The aim was to investigate the morphological, photosynthetic, and hydraulic physiological characteristics of different genotypes of Coffea canephora under controlled cultivation conditions. Growth, conductance, and hydraulic conductivity of the root system of 16 C. canephora genotypes were evaluated in Experiment 1 (November 2013). In Experiment 2 (December 2014), in addition to the previous characteristics, gas exchange, photochemical efficiency, leaf water potential, and leaf hydraulic conductivity were investigated in five genotypes. No significant differences were observed in specific leaf hydraulic conductance, stomatal density, or gas exchange. The correlation between root hydraulic conductance and leaf area and dry mass indicates a physiological balance, reflecting the root system's ability to supply water to the aerial parts and maintain leaf water potential and photosynthetic activity during periods of high atmospheric evapotranspiration. These characteristics are important for genotypes cultivated under low water supply and high evaporative demand, even under irrigation.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"62 4","pages":"351-360"},"PeriodicalIF":2.1,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11726287/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142984335","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

Effects of tillage methods on photosynthetic performance of different functional leaf groups of summer maize in coastal saline-alkali farmland. 不同耕作方式对滨海盐碱地夏玉米不同功能叶群光合性能的影响

IF 2.1 4区生物学

Photosynthetica Pub Date : 2024-10-31 eCollection Date: 2024-01-01 DOI: 10.32615/ps.2024.037

H-X Li, Y-F Cheng, J-X Feng, G-L Fu, G-L Liu, P Liu, H Ren, H-Z Wang, B Zhao, G Li

引用次数: 0

Vapor-pressure-deficit-controlled temperature response of photosynthesis in tropical trees. 蒸汽压缺陷控制的热带树木光合作用温度响应。

IF 2.1 4区生物学

Photosynthetica Pub Date : 2024-10-10 eCollection Date: 2024-01-01 DOI: 10.32615/ps.2024.034

C E Eze, K Winter, M Slot

引用次数: 0

Light curve parametrization of three rice (Oryza sativa L.) cultivars based on mechanistic models. 基于机械模型的3个水稻品种光曲线参数化。

IF 2.1 4区生物学

Photosynthetica Pub Date : 2024-09-30 eCollection Date: 2024-01-01 DOI: 10.32615/ps.2024.033

Z P Ye, S X Zhou, X L Yang, H J Kang, S H Duan, F B Wang

{"title":"Light curve parametrization of three rice (Oryza sativa L.) cultivars based on mechanistic models.","authors":"Z P Ye, S X Zhou, X L Yang, H J Kang, S H Duan, F B Wang","doi":"10.32615/ps.2024.033","DOIUrl":"10.32615/ps.2024.033","url":null,"abstract":"This study aimed to assess variations in leaf gas-exchange characteristics, leaf pigment contents, and some intrinsic traits of photosynthetic pigment molecules in three rice cultivars (cv. JR3015, Wufengyou3015, and Jifengyou3015) using mechanistic models. The findings revealed that chlorophyll content varied significantly among the three cultivars, but not maximum electron transport rate. JR3015 had lower chlorophyll content but the highest eigen-absorption cross-section (σik) and the lowest minimum average life-time of photosynthetic pigment molecules in the excited state (τmin). Our results suggested that the highest σik and the lowest τmin in JR3015 facilitated its electron transport rate despite its lower leaf chlorophyll content. Furthermore, compared to Jifengyou3015 and Wufengyou3015, JR3015 had the lowest photosynthetic electron-use efficiency via PSII, which contributed to its lowest maximum net photosynthetic rate. These findings are important in selecting rice cultivars based on their differences in photosynthetic capacity.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"62 3","pages":"305-313"},"PeriodicalIF":2.1,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11622559/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142794774","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. 给编辑的信。

IF 2.1 4区生物学

Photosynthetica Pub Date : 2024-09-30 eCollection Date: 2024-01-01 DOI: 10.32615/ps.2024.036

U Schreiber

引用次数: 0