Photosynthetica最新文献_第10页

Updating the occurrence of crassulacean acid metabolism (CAM) in the genus Clusia through carbon isotope analysis of species from Colombia. 通过哥伦比亚属植物的碳同位素分析更新了天冬酰胺酸代谢(CAM)在Clusia属植物中的存在

IF 2.1 4区生物学

Photosynthetica Pub Date : 2022-04-14 eCollection Date: 2022-01-01 DOI: 10.32615/ps.2022.018

P Pachon, K Winter, E Lasso

引用次数: 0

Response of upland cotton (Gossypium hirsutum L.) leaf chlorophyll content to high heat and low-soil water in the Arizona low desert. 亚利桑那低地沙漠陆地棉叶片叶绿素含量对高热低水分的响应

IF 2.1 4区生物学

Photosynthetica Pub Date : 2022-04-13 eCollection Date: 2022-01-01 DOI: 10.32615/ps.2022.014

A L Thompson, M M Conley, M T Herritt, K R Thorp

{"title":"Response of upland cotton (Gossypium hirsutum L.) leaf chlorophyll content to high heat and low-soil water in the Arizona low desert.","authors":"A L Thompson, M M Conley, M T Herritt, K R Thorp","doi":"10.32615/ps.2022.014","DOIUrl":"10.32615/ps.2022.014","url":null,"abstract":"The sustainable production of upland cotton, an economically important fiber crop, is threatened by changing environmental factors including high temperatures and low-soil water content. Both high heat and low-soil water can reduce net photosynthesis resulting in low fiber yields or poor fiber quality. Leaf chlorophyll content has a direct relationship with photosynthetic rate. Understanding how high heat and low-soil water affect chlorophyll content can identify opportunities for breeding improvement that will lead to sustainable fiber yields. A two-year field trial located in Maricopa Arizona measured leaf chlorophyll content, available soil water, ambient air temperatures, and cotton growth measurements collected by a high-clearance tractor equipped with proximal sensors. The results showed that low-soil water significantly increased leaf chlorophyll content, while high temperatures significantly reduced content. Structured equation modeling revealed that cotton may divert available resources to leaf area and chlorophyll content for the production of photosynthates during periods of high temperatures.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"78 1","pages":"280-292"},"PeriodicalIF":2.1,"publicationDate":"2022-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11558507/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79230882","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

Tribute to Jean Lavorel (1928-2021), an outstanding experimenter and a brilliant theorist of photosynthesis 向Jean Lavorel(1928-2021)致敬，他是一位杰出的光合作用实验家和杰出的理论家

IF 2.7 4区生物学

Photosynthetica Pub Date : 2022-04-08 DOI: 10.32615/ps.2022.021

G. Govindjee, Y. Kouchkovsky, G. Garab

引用次数: 1

Upregulation of the mitochondrial alternative oxidase pathway improves PSII function and photosynthetic electron transport in tomato seedlings under chilling stress. 线粒体替代氧化酶途径的上调改善了低温胁迫下番茄幼苗PSII功能和光合电子传递

IF 2.1 4区生物学

Photosynthetica Pub Date : 2022-03-31 eCollection Date: 2022-01-01 DOI: 10.32615/ps.2022.019

J J Zeng, W H Hu, X H Hu, H M Tao, L Zhong, L L Liu

{"title":"Upregulation of the mitochondrial alternative oxidase pathway improves PSII function and photosynthetic electron transport in tomato seedlings under chilling stress.","authors":"J J Zeng, W H Hu, X H Hu, H M Tao, L Zhong, L L Liu","doi":"10.32615/ps.2022.019","DOIUrl":"10.32615/ps.2022.019","url":null,"abstract":"The aim of this study was to explore how the mitochondrial alternative oxidase (AOX) pathway alleviates photoinhibition in chilled tomato (Solanum lycopersicum) seedlings. Chilling induced photoinhibition in tomato seedlings despite the increases in thermal energy dissipation and cyclic electron flow around PSI (CEF-PSI). Chilling inhibited the function of PSII and blocked electron transport at the PSII acceptor side, however, it did not affect the oxygen-evolving complex on the donor side of PSII. Upregulation of the AOX pathway protects against photoinhibition by improving PSII function and photosynthetic electron transport in tomato seedlings under chilling stress. The AOX pathway maintained the open state of PSII and the stability of the entire photosynthetic electron transport chain. Moreover, the protective role of the AOX pathway on PSII was more important than that on PSI. However, inhibition of the AOX pathway could be compensated by increasing CEF-PSI activity under chilling stress.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"42 1","pages":"271-279"},"PeriodicalIF":2.1,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11558502/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78627527","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

The role of photosynthetic activity in the regulation of flg22-induced local and systemic defence reaction in tomato. 光合活性在flg22诱导的番茄局部和全身防御反应中的调节作用

IF 2.1 4区生物学

Photosynthetica Pub Date : 2022-03-30 eCollection Date: 2022-01-01 DOI: 10.32615/ps.2022.015

Z Czékus, P Koprivanacz, A Kukri, N Iqbal, A Ördög, P POóR

引用次数: 0

Vertical profile of photosynthetic CO₂ response within rice canopy. 水稻冠层光合CO2响应的垂直剖面

IF 2.1 4区生物学

Photosynthetica Pub Date : 2022-03-28 eCollection Date: 2022-01-01 DOI: 10.32615/ps.2022.011

Y P Lv, Y Pan

引用次数: 0

Leaf structure and photosynthesis in Populus alba under naturally fluctuating environments. 自然波动环境下白杨叶片结构与光合作用

IF 2.1 4区生物学

Photosynthetica Pub Date : 2022-03-28 eCollection Date: 2022-01-01 DOI: 10.32615/ps.2022.012

X Y Lin, X X Wang, Q Y Zeng, Q Yang

引用次数: 0

Chlorophyll measurements in Alstroemeria sp. using SPAD-502 meter and the color space CIE L*a*b*, and its validation in foliar senescence. SPAD-502在CIE L*a*b*色空间下测量alstroemia sp.叶绿素及其在叶片衰老中的验证

IF 2.1 4区生物学

Photosynthetica Pub Date : 2022-03-17 eCollection Date: 2022-01-01 DOI: 10.32615/ps.2022.007

I Villegas-VeláZquez, H A Zavaleta-Mancera, M L Arévalo-Galarza, J Suarez-Espinosa, C Garcia-Osorio, D Padilla-Chacon, I G Galvan-Escobedo, J F Jimenez-Bremont

{"title":"Chlorophyll measurements in Alstroemeria sp. using SPAD-502 meter and the color space CIE L*a*b*, and its validation in foliar senescence.","authors":"I Villegas-VeláZquez, H A Zavaleta-Mancera, M L Arévalo-Galarza, J Suarez-Espinosa, C Garcia-Osorio, D Padilla-Chacon, I G Galvan-Escobedo, J F Jimenez-Bremont","doi":"10.32615/ps.2022.007","DOIUrl":"10.32615/ps.2022.007","url":null,"abstract":"Our research aimed to study the correlation between the SPAD-502 readings and the color space CIE L*a*b* values in two cultivars of Alstroemeria sp. during leaf senescence and to evaluate the statistical criteria used in the selection of the best fit calibration functions. We demonstrate the importance of the Akaike information criterion and the parsimonious function besides the coefficient of determination. The reliability of the functions was tested by Student's t-test comparison between the chlorophyll (Chl) estimated from SPAD readings and their chemical concentrations. Polynomial and Hoerl function described well the changes in Chl a and total Chl (a+b) during senescence, but calibration functions are required to perform for each cultivar. We demonstrated that CIE L*a*b* system is reliable to estimate SPAD reading at stages of leaf senescence of Alstroemeria sp. and can be used instead of SPAD-502.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"6 1","pages":"230-239"},"PeriodicalIF":2.1,"publicationDate":"2022-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11558510/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90430309","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

Editorial.

IF 2.1 4区生物学

Photosynthetica Pub Date : 2022-03-15 eCollection Date: 2022-01-01 DOI: 10.32615/ps.2022.017

O Prášil, Radek Kaňa, G Govindjee

引用次数: 0

Dependence of the rate-limiting steps in the dark-to-light transition of photosystem II on the lipidic environment of the reaction center. 光系统II从暗到光转变的限速步骤对反应中心脂质环境的依赖性

IF 2.1 4区生物学

Photosynthetica Pub Date : 2022-03-14 eCollection Date: 2022-01-01 DOI: 10.32615/ps.2022.016

M Magyar, P Akhtar, G Sipka, W Han, X Li, G Han, J-R Shen, P H Lambrev, G Garab

{"title":"Dependence of the rate-limiting steps in the dark-to-light transition of photosystem II on the lipidic environment of the reaction center.","authors":"M Magyar, P Akhtar, G Sipka, W Han, X Li, G Han, J-R Shen, P H Lambrev, G Garab","doi":"10.32615/ps.2022.016","DOIUrl":"10.32615/ps.2022.016","url":null,"abstract":"In our earlier works, we have identified rate-limiting steps in the dark-to-light transition of PSII. By measuring chlorophyll a fluorescence transients elicited by single-turnover saturating flashes (STSFs) we have shown that in diuron-treated samples an STSF generates only F1 (< Fm) fluorescence level, and to produce the maximum (Fm) level, additional excitations are required, which, however, can only be effective if sufficiently long Δτ waiting times are allowed between the excitations. Biological variations in the half-rise time (Δτ 1/2) of the fluorescence increment suggest that it may be sensitive to the physicochemical environment of PSII. Here, we investigated the influence of the lipidic environment on Δτ 1/2 of PSII core complexes of Thermosynechococcus vulcanus. We found that while non-native lipids had no noticeable effects, thylakoid membrane lipids considerably shortened the Δτ 1/2, from ~ 1 ms to ~ 0.2 ms. The importance of the presence of native lipids was confirmed by obtaining similarly short Δτ 1/2 values in the whole T. vulcanus cells and isolated pea thylakoid membranes. Minor, lipid-dependent reorganizations were also observed by steady-state and time-resolved spectroscopic measurements. These data show that the processes beyond the dark-to-light transition of PSII depend significantly on the lipid matrix of the reaction center.","PeriodicalId":20157,"journal":{"name":"Photosynthetica","volume":"13 1","pages":"147-156"},"PeriodicalIF":2.1,"publicationDate":"2022-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11559480/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89441391","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