Photosynthetica最新文献_第3页

Evaluating physiological traits of Coffea canephora clones intercropped with Hevea brasiliensis. 间作巴西橡胶树的咖啡无性系生理性状评价。

IF 1.6 4区生物学

Photosynthetica Pub Date : 2025-10-13 eCollection Date: 2025-01-01 DOI: 10.32615/ps.2025.028

I D P Pereira, S Dousseau-Arantes, J A Machado Filho, L O Arantes, M M Mendes, V F Santos, G A R de Souza, B Cerri Neto, D Cassol, A R Falqueto

{"title":"Evaluating physiological traits of Coffea canephora clones intercropped with Hevea brasiliensis.","authors":"I D P Pereira, S Dousseau-Arantes, J A Machado Filho, L O Arantes, M M Mendes, V F Santos, G A R de Souza, B Cerri Neto, D Cassol, A R Falqueto","doi":"10.32615/ps.2025.028","DOIUrl":"10.32615/ps.2025.028","url":null,"abstract":"In this study, we evaluated the physiological response of the photosynthetic apparatus [using chlorophyll a fluorescence (ChlaF) measurements], changes in leaf nutrient contents, and productivity of 16 Coffea canephora clones grown alone (NC, full sunlight) or intercropped with Hevea brasiliensis (IC, shaded). Shade from H. brasiliensis trees influenced the physiological performance of coffee plants. Some of these coffee clones achieved clear responses to shading by rubber trees, indicating that the responses of coffee plants to intercropping are genotype-specific. The PSII complex of the NC plants was more susceptible to photoinhibition, especially clones 02, 73, 143, and 109A, which had increased minimal fluorescence, specific energy fluxes per reaction centers, maximum photochemical quantum yield, quantum efficiency of electron transfer from QA - to the electron transport chain beyond QA -, and number of active PSII reaction centers per cross section, performance index for conservation of energy from captured excitons to reduction of intersystem electron acceptors, and lower maximum fluorescence. In contrast, the higher photosynthetic efficiency and productivity of the clones under shaded conditions indicated their potential for cultivation together with H. brasiliensis.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"63 3","pages":"297-308"},"PeriodicalIF":1.6,"publicationDate":"2025-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12551367/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145378362","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

Avoiding leakage when classifying drought stress from OJIP fluorescence - comment on Xia et al. (2025). 利用OJIP荧光对干旱胁迫进行分类时避免泄漏——评夏等（2025）。

IF 1.6 4区生物学

Photosynthetica Pub Date : 2025-10-07 eCollection Date: 2025-01-01 DOI: 10.32615/ps.2025.031

E P Pastore

引用次数: 0

Role of nitrogen utilization in facilitating photosynthetic compensation of soybean under vertically heterogeneous light. 垂直非均质光条件下氮素利用对大豆光合补偿的促进作用

IF 1.6 4区生物学

Photosynthetica Pub Date : 2025-09-23 eCollection Date: 2025-01-01 DOI: 10.32615/ps.2025.026

X R Ma, X M Song, E Z Zhang, J B Du, X Sun

{"title":"Role of nitrogen utilization in facilitating photosynthetic compensation of soybean under vertically heterogeneous light.","authors":"X R Ma, X M Song, E Z Zhang, J B Du, X Sun","doi":"10.32615/ps.2025.026","DOIUrl":"10.32615/ps.2025.026","url":null,"abstract":"Photosynthetic compensation enables high-density planted crops to use the available light efficiently. However, the underlying mechanism remains unclear. Herein, soybeans (Glycine max L. Merr.) were treated with vertically heterogeneous light (HL) to simulate the light conditions in high-density planting. The net photosynthetic rate (P N) increased in upper unshaded leaves (UL) while it decreased in lower shaded leaves (LL) under HL. This evident photosynthetic compensation was accompanied by a preferential distribution of N to UL. Correspondingly, the amounts of chlorophyll (Chl) and Rubisco increased in UL. At the same time, the ratio of Rubisco to Chl (Rubisco/Chl) and the photosynthetic N-use efficiency (PNUE) of UL decreased under HL. In contrast, there was little change in the PNUE of LL. This study suggests that the within-plant distribution and within-leaf allocation of N play significant roles in photosynthetic compensation. The decline in PNUE at the whole-plant level should be viewed as a cost associated with facilitating this process.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"63 3","pages":"291-295"},"PeriodicalIF":1.6,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12551366/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145378364","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

Cadmium and high light stress interactions highlight limits of PSII in Arabidopsis thaliana. 镉和强光胁迫的相互作用突出了拟南芥PSII的局限性。

IF 1.6 4区生物学

Photosynthetica Pub Date : 2025-09-09 eCollection Date: 2025-01-01 DOI: 10.32615/ps.2025.027

R Singh

引用次数: 0

A thank you note for Julian Eaton-Rye, the wonderful staff at Photosynthetica, and all the scientists who participated in the 2018 special issue. 感谢朱利安·伊顿·赖伊（Julian Eaton-Rye），他是Photosynthetica的优秀员工，以及所有参与2018年特刊的科学家。

IF 1.6 4区生物学

Photosynthetica Pub Date : 2025-08-07 eCollection Date: 2025-01-01 DOI: 10.32615/ps.2025.025

G Govindjee

引用次数: 0

In honor of Reto Jörg Strasser: A pioneer of chlorophyll a fluorescence research. 为了纪念Reto Jörg Strasser：叶绿素荧光研究的先驱。

IF 1.6 4区生物学

Photosynthetica Pub Date : 2025-08-07 eCollection Date: 2025-01-01 DOI: 10.32615/ps.2025.024

A Stirbet, G Govindjee, A Srivastava

引用次数: 0

Variations in the photoprotective responses of trees and seedlings of the endangered Pitavia punctata (Ruiz & Pav.) Molina. 濒临灭绝的斑点皮塔维亚树和幼苗的光保护反应的变化（Ruiz & Pav.）莫利纳。

IF 1.6 4区生物学

Photosynthetica Pub Date : 2025-08-07 eCollection Date: 2025-01-01 DOI: 10.32615/ps.2025.023

S Espinoza, D Muñoz-Concha

{"title":"Variations in the photoprotective responses of trees and seedlings of the endangered Pitavia punctata (Ruiz & Pav.) Molina.","authors":"S Espinoza, D Muñoz-Concha","doi":"10.32615/ps.2025.023","DOIUrl":"10.32615/ps.2025.023","url":null,"abstract":"Pitavia punctata (Ruiz & Pav.) Molina ('Pitao') is an endangered species that regenerates under the shade. We monitored the photochemical efficiency of photosystem II in four localities spanning the geographical distribution of the species in Central Chile. Technical fluorescence parameters and JIP-test-derived parameters were measured in trees (up to 15 m) and seedlings (< 50 cm). We observed significant effects of the type of plant and locality on the performance index (PIABS) and maximum fluorescence (FM). PIABS was higher in trees from the Los Barros locality (PIABS = 41), whereas seedlings located in Colcura locality had PIABS = 26. Seedlings exhibited higher FM compared to trees (FM = 940 and 895 for seedlings and trees, respectively), particularly in locality Ramadillas (FM = 1,025). Our results provide information on a topic largely understudied in native species in Chile and are useful for designing and monitoring restoration processes for P. punctata.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"63 3","pages":"262-266"},"PeriodicalIF":1.6,"publicationDate":"2025-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12551364/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145378328","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

Leaf gas exchange and photosynthetic light-response curves of cassava genotypes under drought stress during the early growth stage and after recovery. 干旱胁迫下木薯生长初期和恢复后叶片气体交换和光合光响应曲线

IF 1.6 4区生物学

Photosynthetica Pub Date : 2025-07-22 eCollection Date: 2025-01-01 DOI: 10.32615/ps.2025.021

K Vongcharoen, S Santanoo, P Ittipong, P Banterng, N Vorasoot, S Jogloy, P Theerakulpisut

{"title":"Leaf gas exchange and photosynthetic light-response curves of cassava genotypes under drought stress during the early growth stage and after recovery.","authors":"K Vongcharoen, S Santanoo, P Ittipong, P Banterng, N Vorasoot, S Jogloy, P Theerakulpisut","doi":"10.32615/ps.2025.021","DOIUrl":"10.32615/ps.2025.021","url":null,"abstract":"This study aimed to gain insights into the photosynthesis capacity and genotypic differences in response to drought imposed at an early growth stage of cassava. Leaf water potential (LWP), leaf gas exchange, and photosynthetic light-response curves were investigated in six field-grown cassava genotypes under full irrigation and drought imposed for 60 d during 3-5 months after planting. During the drought period, mean LWP at predawn (LWPpre) was significantly lower than that in the control plants, while the mean midday LWP (LWPmid) was similar. During the drought period, the mean stomatal conductance was reduced from 0.36 to 0.09 mol(H2O) m-2 s-1, mean transpiration rate from 5.30 to 1.86 mmol(H2O) m-2 s-1 with the concomitant reduction in net photosynthetic rate (P N) from 27.45 to 16.34 μmol(CO2) m-2 s-1. Analysis of the light-response curves revealed a reduction in the light-saturation point (I sat), the light-saturated net photosynthetic rate (P Nmax), and the apparent quantum yield (AQY). After rewatering for 30 d, the drought plants could fully recover. In conclusion, P N at high light intensity, P Nmax, I sat, and AQY were useful parameters to differentiate genotypes for variability in drought tolerance.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"63 3","pages":"246-261"},"PeriodicalIF":1.6,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12551372/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145378299","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 characteristics of upland cotton (Gossypium hirsutum) recessive genic male sterile line YA-1 with virescent trait. 具有翠绿性状的陆地棉隐性雄性不育系YA-1的光合特性。

IF 1.6 4区生物学

Photosynthetica Pub Date : 2025-07-16 eCollection Date: 2025-01-01 DOI: 10.32615/ps.2025.018

N Yang, X X Liu, X P Zhang, H Q Deng, X L Shen, C M Tang

{"title":"Photosynthetic characteristics of upland cotton (Gossypium hirsutum) recessive genic male sterile line YA-1 with virescent trait.","authors":"N Yang, X X Liu, X P Zhang, H Q Deng, X L Shen, C M Tang","doi":"10.32615/ps.2025.018","DOIUrl":"10.32615/ps.2025.018","url":null,"abstract":"The upland cotton strain YA-1 can be used for hybrid seed production and recurrent selection. However, the effect of YA-1 virescent phenotype on photosynthetic traits remains unclear. This study demonstrated that the chlorophyll and carotenoid contents, light-saturation point, light-compensation point, and PSII reaction center activities are lower than those of green leaves of wide type. In contrast, light-energy utilization efficiencies, net photosynthetic rate, transpiration rate, stomatal conductance, concentrations of Rubisco and phosphoenolpyruvate carboxylase, photosynthetic performance indices, and energy distribution parameters of the yellowish leaves of YA-1 are higher than those of wild type green leaves. The lower expression of GhHemL, GhSGRL, and GhCAO genes impairs chlorophyll biosynthesis, while the downregulation of GhZEP and GhNCED disrupts carotenoid biosynthesis, altering the pigment composition in yellowish leaves. The yellowish phenotype of YA-1 had significant positive effects on photosynthetic efficiency. This finding provides a valuable basis for optimizing the use of YA-1 in cotton breeding programs.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"63 3","pages":"234-245"},"PeriodicalIF":1.6,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12551370/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145378345","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

From spectrum to yield: advances in crop photosynthesis with hyperspectral imaging. 从光谱到产量：利用高光谱成像技术研究作物光合作用的进展。

IF 1.6 4区生物学

Photosynthetica Pub Date : 2025-07-08 eCollection Date: 2025-01-01 DOI: 10.32615/ps.2025.012

D Panda, S Mohanty, S Das, J Senapaty, D B Sahoo, B Mishra, M J Baig, L Behera

{"title":"From spectrum to yield: advances in crop photosynthesis with hyperspectral imaging.","authors":"D Panda, S Mohanty, S Das, J Senapaty, D B Sahoo, B Mishra, M J Baig, L Behera","doi":"10.32615/ps.2025.012","DOIUrl":"10.32615/ps.2025.012","url":null,"abstract":"Ensuring global food security requires noninvasive techniques for optimizing resource use and monitoring crop health. Hyperspectral imaging (HSI) enables the precise analysis of plant physiology by capturing spectral data across narrow bands. This review explores HSI's role in agriculture, particularly its integration with unmanned aerial vehicles, AI-driven analytics, and machine learning. These advancements allow real-time monitoring of photosynthesis, chlorophyll fluorescence, and carbon assimilation, linking spectral data to plant health and agronomic decisions. Key indicators such as solar-induced fluorescence and vegetation indices enhance crop stress detection. This work compares HSI-derived metrics in differentiating nutrient deficiencies, drought, and disease. Despite its potential, challenges remain in data standardization and spectral interpretation. This review discusses solutions such as molecular phenotyping and predictive modeling, for AI-driven precision agriculture. Addressing these gaps, HSI is poised to revolutionize farming, improve climate resilience, and ensure food security.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"63 2","pages":"196-233"},"PeriodicalIF":1.6,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12319944/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144789721","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