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1. The electrical signal-induced systemic photosynthetic response is accompanied by changes in the photochemical reflectance index in pea

Author:
Sukhov, Vladimir; Sukhova, Ekaterina; Gromova, Ekaterina; Surova, Lyubov; Nerush, Vladimir; Vodeneev, Vladimir
Source:
Functional plant biology 2019 v.46 no.4 pp. 328-338
ISSN:
1445-4408
Subject:
photosystem II,   etc   ; Pisum sativum; heat; leaves; monitoring; peas; photochemistry; reflectance;     Show all 8 Subjects
Abstract:
... Plants can be affected by numerous environmental stressors with spatially heterogeneous actions on their bodies. A fast systemic photosynthetic response, which is connected with long-distance electrical signalling, plays an important role in the adaptation of higher plants to the action of stressors. Potentially, measurement of the response by using a photochemical reflectance index (PRI) could be ...
DOI:
10.1071/FP18224

2. Influence of light intensity on cadmium uptake and toxicity in the cyanobacteria Synechocystis sp. PCC6803

Author:
Du, Juan; Qiu, Baosheng; Pedrosa Gomes, Marcelo; Juneau, Philippe; Dai, Guozheng
Source:
Aquatic toxicology 2019 v.211 pp. 163-172
ISSN:
0166-445X
Subject:
photosystem II,   etc   ; Synechocystis sp. PCC 6803; cadmium; fluorescence; light intensity; photochemistry; photoperiod; photosystem I; toxicity;     Show all 9 Subjects
Abstract:
... The mechanisms of cadmium toxicity to cyanobacterial photosynthesis have been extensively studied, but the response mechanisms to combinations of different cadmium concentrations and different light intensities are not yet well understood. The two principal objectives of the present work were to: 1) study the short term (5 h) toxic effects of cadmium on Synechocystis PCC6803 under three different ...
DOI:
10.1016/j.aquatox.2019.03.016

3. The mechanism of cyclic electron flow

Author:
Nawrocki, W.J.; Bailleul, B.; Picot, D.; Cardol, P.; Rappaport, F.; Wollman, F.-A.; Joliot, P.
Source:
Biochimica et biophysica acta 2019 v.1860 no.5 pp. 433-438
ISSN:
0005-2728
Subject:
photosystem II,   etc   ; adenosine triphosphate; carbon; carbon dioxide; chloroplasts; electron transfer; photostability; photosystem I;     Show all 8 Subjects
Abstract:
... Apart from the canonical light-driven linear electron flow (LEF) from water to CO2, numerous regulatory and alternative electron transfer pathways exist in chloroplasts. One of them is the cyclic electron flow around Photosystem I (CEF), contributing to photoprotection of both Photosystem I and II (PSI, PSII) and supplying extra ATP to fix atmospheric carbon. Nonetheless, CEF remains an enigma in ...
DOI:
10.1016/j.bbabio.2018.12.005

4. Can solar control infrared blocking films be used to replace evaporative cooling for growth of Nannochloropsis sp. in plate photobioreactors?

Author:
Nwoba, Emeka G.; Parlevliet, David A.; Laird, Damian W.; Vadiveloo, Ashiwin; Alameh, Kamal; Moheimani, Navid R.
Source:
Algal research 2019 v.39 pp. 101441
ISSN:
2211-9264
Subject:
photosystem II,   etc   ; Nannochloropsis; biomass production; cooling; cooling systems; heat; microalgae; photobioreactors; temperature;     Show all 9 Subjects
Abstract:
... Photobioreactor overheating is a significant challenge of microalgal mass production, resulting in low photosynthetic efficiency and poor biomass productivity. Due to cost and performance limitation, passive evaporative cooling systems for managing culture temperature are currently neither economical nor sustainable. In this study, the growth and photophysiology of Nannochloropsis sp. MUR 267 in f ...
DOI:
10.1016/j.algal.2019.101441

5. Environmental variations mediate duckweed (Lemna minor L.) sensitivity to copper exposure through phenotypic plasticity

Author:
Roubeau Dumont, Eva; Larue, Camille; Pujol, Benoît; Lamaze, Thierry; Elger, Arnaud
Source:
Environmental science and pollution research international 2019 v.26 no.14 pp. 14106-14115
ISSN:
0944-1344
Subject:
photosystem II,   etc   ; Lemna minor; copper; environmental factors; light intensity; nutrient content; phenotypic plasticity; risk assessment;     Show all 8 Subjects
Abstract:
... Environmentally mediated sensitivity of Lemna minor to copper (Cu) was evaluated for the first time in three experiments: the effects of two levels of nutrient concentration, light irradiance or Cu pre-exposure were tested. Various Cu concentrations (ranging from 0.05 to 0.25 mg/L) were used to assess the sensitivity of L. minor to this metal, using one common strain previously acclimatized to two ...
DOI:
10.1007/s11356-019-04630-3

6. Molecular Photoelectrode for Water Oxidation Inspired by Photosystem II

Author:
Wang, Degao; Sampaio, Renato N.; Troian-Gautier, Ludovic; Marquard, Seth L.; Farnum, Byron H.; Sherman, Benjamin D.; Sheridan, Matthew V.; Dares, Christopher J.; Meyer, Gerald J.; Meyer, Thomas J.
Source:
Journal of the American Chemical Society 2019 v.141 no.19 pp. 7926-7933
ISSN:
1520-5126
Subject:
photosystem II,   etc   ; aqueous solutions; carbon; carbon dioxide; catalysts; electrodes; hydrogen; lighting; oxidation; oxygen;     Show all 10 Subjects
Abstract:
... In artificial photosynthesis, the sun drives water splitting into H₂ and O₂ or converts CO₂ into a useful form of carbon. In most schemes, water oxidation is typically the limiting half-reaction. Here, we introduce a molecular approach to the design of a photoanode that incorporates an electron acceptor, a sensitizer, an electron donor, and a water oxidation catalyst in a single molecular assembly ...
DOI:
10.1021/jacs.9b02548

7. High temperature and high light intensity induced photoinhibition of bayberry (Myrica rubra Sieb. et Zucc.) by disruption of D1 turnover in photosystem II

Author:
Gao, Yong-bin; Zheng, Wei-wei; Zhang, Cong; Zhang, Lan-lan; Xu, Kai
Source:
Scientia horticulturae 2019 v.248 pp. 132-137
ISSN:
0304-4238
Subject:
photosystem II,   etc   ; D1 protein; Morella rubra; cultivars; fluorescence; light intensity; photochemistry; photoinhibition; proteinases; temperature;     Show all 10 Subjects
Abstract:
... High temperature and high light intensity have negative effects on photosynthetic capacity. Bayberry (Myrica rubra Sieb. et Zucc.) photosynthesis is prone to decline under these stresses; however, the mechanisms underlying the low capacity of bayberry photosynthesis induced by these stresses remain largely unknown. The responses of two bayberry cultivars, ‘Dongkui’ and ‘Tanmei’, to stress were stu ...
DOI:
10.1016/j.scienta.2019.01.007

8. Consequences of structural modifications in cytochrome b559 on the electron acceptor side of Photosystem II

Author:
Nakamura, Makoto; Boussac, Alain; Sugiura, Miwa
Source:
Photosynthesis research 2019 v.139 no.1-3 pp. 475-486
ISSN:
0166-8595
Subject:
photosystem II,   etc   ; Thermosynechococcus elongatus; electron transfer; histidine; ligands; methionine; mutants; mutation; singlet oxygen;     Show all 9 Subjects
Abstract:
... Cytb₅₅₉ in Photosystem II is a heterodimeric b-type cytochrome. The subunits, PsbE and PsbF, consist each in a membrane α-helix. Mutants were previously designed and studied in Thermosynechococcus elongatus (Sugiura et al., Biochim Biophys Acta 1847:276–285, 2015) either in which an axial histidine ligand of the haem-iron was substituted for a methionine, the PsbE/H23M mutant in which the haem was ...
DOI:
10.1007/s11120-018-0521-0

9. Regulation of excitation energy in Nannochloropsis photosystem II

Author:
Yokono, Makio; Umetani, Ikumi; Takabayashi, Atushi; Akimoto, Seiji; Tanaka, Ayumi
Source:
Photosynthesis research 2019 v.139 no.1-3 pp. 155-161
ISSN:
0166-8595
Subject:
photosystem II,   etc   ; Nannochloropsis; chlorophyll; energy transfer; fluorescence; habitats; light harvesting complex; pH;     Show all 8 Subjects
Abstract:
... Recently, we isolated a complex consisting of photosystem II (PSII) and light-harvesting complexes (LHCs) from Nannochloropsis granulata (Umetani et al. Photosynth Res 136:49–61, 2017). This complex contained stress-related protein, Lhcx, as a major component of LHC (Protein ID is Naga_100173g12.1), suggesting that non-photochemical quenching activities may be taking place in the PSII-LHC complex. ...
DOI:
10.1007/s11120-018-0510-3

10. Regulation of PSII function in Cyanothece sp. ATCC 51142 during a light–dark cycle

Author:
Sicora, Cosmin Ionel; Chiș, Iuliana; Chiș, Ciprian; Sicora, Oana
Source:
Photosynthesis research 2019 v.139 no.1-3 pp. 461-473
ISSN:
0166-8595
Subject:
photosystem II,   etc   ; Chlorophyta; Cyanothece; D1 protein; dissociation; enzyme activity; genes; nitrogen; nitrogenase; oxidation; photoperiod; protein synthesis;     Show all 12 Subjects
Abstract:
... Cyanobacteria, as well as green algae and higher plants, have highly conserved photosynthetic machinery. Cyanothece sp. ATCC 51142 is a unicellular, aerobic, diazotrophic cyanobacterium that fixes N₂ in the dark. In Cyanothece, the psbA gene family is composed of five members, encoding different isoforms of the D1 protein. A new D1 protein has been postulated in the literature, which blocks PSII d ...
DOI:
10.1007/s11120-018-0598-5

11. Comparison of the abilities of vegetation indices and photosynthetic parameters to detect heat stress in wheat

Author:
Cao, Zhongsheng; Yao, Xia; Liu, Hongyan; Liu, Bing; Cheng, Tao; Tian, Yongchao; Cao, Weixing; Zhu, Yan
Source:
Agricultural and forest meteorology 2019 v.265 pp. 121-136
ISSN:
0168-1923
Subject:
photosystem II,   etc   ; Triticum aestivum; chlorophyll; climate; heat stress; leaves; photochemistry; reflectance; temperature; vegetation index; wheat;     Show all 11 Subjects
Abstract:
... With the changing of the climate, the detection of heat stress as early as possible has become increasingly important for wheat (Triticum aestivum L.) production. Previous studies have demonstrated that photosynthetic parameters can serve as indicators of the stress conditions, and vegetation indices (VIs) provide the ability to non-destructively monitor photosynthetic parameters. However, it rema ...
DOI:
10.1016/j.agrformet.2018.11.009

12. Activation of Metal Oxo and Nitrido Complexes by Lewis Acids

Author:
Liu, Yingying; Lau, Tai-Chu
Source:
Journal of the American Chemical Society 2019 v.141 no.9 pp. 3755-3766
ISSN:
1520-5126
Subject:
photosystem II,   etc   ; Bronsted acids; Lewis acids; active sites; metal ions; nitrides; oxidants; oxidation;     Show all 8 Subjects
Abstract:
... Metal oxo species (M═O) play key roles as oxidants in chemical and biological systems. Although Brønsted acids have long been known to enhance the oxidizing power of metal oxo complexes, the use of Lewis acids (LAs), such as metal ions, to activate these complexes has received much less attention until recently. The report of the presence of a Mn₄CaO₅ cluster active site in the oxygen-evolving cen ...
DOI:
10.1021/jacs.8b13100

13. Role of the PB-loop in ApcE and phycobilisome core function in cyanobacterium Synechocystis sp. PCC 6803

Author:
Zlenko, Dmitry V.; Elanskaya, Irina V.; Lukashev, Evgeny P.; Bolychevtseva, Yulia V.; Suzina, Natalia E.; Pojidaeva, Elena S.; Kononova, Irena A.; Loktyushkin, Aleksey V.; Stadnichuk, Igor N.
Source:
Biochimica et biophysica acta 2019 v.1860 no.2 pp. 155-166
ISSN:
0005-2728
Subject:
photosystem II,   etc   ; Rhodophyta; Synechocystis sp. PCC 6803; energy transfer; mutants; mutation; phycobiliprotein; polypeptides; thylakoids;     Show all 9 Subjects
Abstract:
... The phycobilisome (PBS) is a giant highly-structured pigment-protein antenna of cyanobacteria and red algae. PBS is composed of the phycobiliproteins and several linker polypeptides. The large core-membrane linker protein (LCM or ApcE) influences many features and functions of PBS and consists of several domains including the chromophorylated PB-domain. Being homologous to the phycobiliprotein α-s ...
DOI:
10.1016/j.bbabio.2018.10.004

14. The structural and functional domains of plant thylakoid membranes

Author:
Koochak, Haniyeh; Puthiyaveetil, Sujith; Mullendore, Daniel L.; Li, Meng; Kirchhoff, Helmut
Source:
Theplant journal 2019 v.97 no.3 pp. 412-429
ISSN:
0960-7412
Subject:
photosystem II,   etc   ; adenosinetriphosphatase; grana; immunoblotting; light harvesting complex; lipids; polyacrylamide gel electrophoresis; quantitative analysis; thylakoids;     Show all 9 Subjects
Abstract:
... In plants, the stacking of part of the photosynthetic thylakoid membrane generates two main subcompartments: the stacked grana core and unstacked stroma lamellae. However, a third distinct domain, the grana margin, has been postulated but its structural and functional identity remains elusive. Here, an optimized thylakoid fragmentation procedure combined with detailed ultrastructural, biochemical, ...
DOI:
10.1111/tpj.14127

15. Structural Insights into Substrate Selectivity, Catalytic Mechanism, and Redox Regulation of Rice Photosystem II Core Phosphatase

Author:
Liu, Xiuying; Chai, Jingchao; Ou, Xiaomin; Li, Mei; Liu, Zhenfeng
Source:
Molecular plant 2019 v.12 no.1 pp. 86-98
ISSN:
1674-2052
Subject:
photosystem II,   etc   ; D1 protein; Oryza sativa; active sites; cysteine; enzyme activity; enzymes; glutathione; hydrogen peroxide; proteins;     Show all 10 Subjects
Abstract:
... Photosystem II (PSII) core phosphatase (PBCP) selectively dephosphorylates PSII core proteins including D1, D2, CP43, and PsbH. PBCP function is required for efficient degradation of the D1 protein in the repair cycle of PSII, a supramolecular machinery highly susceptible to photodamage during oxygenic photosynthesis. Here we present structural and functional studies of PBCP from Oryza sativa (OsP ...
DOI:
10.1016/j.molp.2018.11.006

16. Tracking chlorophyll fluorescence as an indicator of drought and rewatering across the entire leaf lifespan in a maize field

Author:
Li, Yibo; Song, He; Zhou, Li; Xu, Zhenzhu; Zhou, Guangsheng
Source:
Agricultural water management 2019 v.211 pp. 190-201
ISSN:
0378-3774
Subject:
photosystem II,   etc   ; chlorophyll; corn; developmental stages; drought; fluorescence; heat; leaves; longevity; photochemistry; photostability; vegetative growth;     Show all 12 Subjects
Abstract:
... Plant growth and photosynthesis in response to water status have been extensively investigated. However, elucidating the photosynthetic process and its indicators under a drought episode and rewatering across the entire leaf lifespan is often neglected. In this experiment, three water treatments were set during two growth seasons: a control treatment, moderate persistent drought (T1), and severe p ...
DOI:
10.1016/j.agwat.2018.09.050

17. Acclimation of Arabidopsis thaliana to low temperature protects against damage of photosystem II caused by exposure to UV-B radiation at 9 °C

Author:
Schultze, Matthias; Bilger, Wolfgang
Source:
Plant physiology and biochemistry 2019 v.134 pp. 73-80
ISSN:
0981-9428
Subject:
photosystem II,   etc   ; Arabidopsis thaliana; acclimation; chlorophyll; environmental factors; light intensity; mesophyll; screening; temperature; transmittance; ultraviolet radiation;     Show all 11 Subjects
Abstract:
... Various environmental variables interact with UV-B radiation (280–315 nm), among them temperature. In many plants epidermal UV screening is induced by low temperature even in the absence of UV irradiation. On the other hand, low temperature can aggravate damage caused by UV-B radiation. We investigated the interaction of UV-B radiation and low temperature in Arabidopsis thaliana (L.) Heynh. Exposu ...
DOI:
10.1016/j.plaphy.2018.10.017

18. Acquired tolerance of the photosynthetic apparatus to photoinhibition as a result of growing Solanum lycopersicum at moderately higher temperature and light intensity

Author:
Gerganova, Milena T.; Faik, Aygyun K.; Velitchkova, Maya Y.
Source:
Functional plant biology 2019 v.46 no.6 pp. 555-566
ISSN:
1445-4408
Subject:
photosystem II,   etc   ; Solanum lycopersicum; electrodes; energy; fluorescence; leaves; light intensity; photochemistry; photoinhibition; temperature; thylakoids; tomatoes;     Show all 12 Subjects
Abstract:
... The kinetics of photoinhibition in detached leaves from tomato plants (Solanium lycopersicum L. cv. M82) grown for 6 days under different combinations of optimal and moderately high temperature and optimal and high light intensity were studied. The inhibition of PSII was evaluated by changes in maximal quantum yield, the coefficient of photochemical quenching and the quantum yield of PSII. The cha ...
DOI:
10.1071/FP18264

19. Analysis of the transformation effect in cytochrome b559 of photosystem II in terms of the model of the heme-quinone redox interaction Bioenergetics

Author:
Kaminskaya, Olga P.; Shuvalov, Vladimir A.
Source:
Biochimica et biophysica acta 2018 v.1859 no.10 pp. 1161-1172
ISSN:
0005-2728
Subject:
photosystem II,   etc   ; heme; models; quinones; titration;     Show all 5 Subjects
Abstract:
... Transformation of three-component redox pattern of cytochrome (Cyt) b559 in PS II membrane fragments upon various treatments is manifested in decrease of the relative content (R) of the high potential (HP) redox form of Cyt b559 and concomitant increase in the fractions of the two lower potential forms. Redox titration of Cyt b559 in different types of PS II membrane preparations was performed and ...
DOI:
10.1016/j.bbabio.2018.07.010

20. In memory of Achim Trebst (1929–2017): a pioneer of photosynthesis research

Author:
Bothe, Hermann; Happe, Thomas; Trebst, Simon; Rögner, Matthias
Source:
Photosynthesis research 2018 v.137 no.3 pp. 341-359
ISSN:
0166-8595
Subject:
photosystem II,   etc   ; biochemical pathways; scientists; singlet oxygen;     Show all 4 Subjects
Abstract:
... The life and work of Achim Trebst (1929–2017) was dedicated to photosynthesis, involving a wide span of seminal contributions which cumulated in more than five decades of active research: Major topics include the separation of light and dark phases in photosynthesis, the elucidation of photosynthesis by the use of inhibitors, the identification of the three-dimensional structure of photosystem II ...
DOI:
10.1007/s11120-018-0516-x