Genotypic variability in the functioning of photosystem II in leaves of covered and naked oats by E. M. Lisitsyn, S. A. Churakova, G. A. Batalova

“…Comparing the characteristics of primary photosynthetic processes in photosystem II (PSII) in the leaves of two oat (Avena sativa L.) subspecies will help to understand their genetic differentiation. …”
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Effects of the Photosystem II Inhibitors CCCP and DCMU on Hydrogen Production by the Unicellular Halotolerant Cyanobacterium Aphanothece halophytica by Sunisa Pansook, Aran Incharoensakdi, Saranya Phunpruch

“…One factor limiting the H2 photoproduction of this cyanobacterium is an inhibition of bidirectional hydrogenase activity by oxygen (O2) obtained from splitting water molecules via photosystem II activity. The present study aimed to investigate the effects of the photosystem II inhibitors carbonyl cyanide m-chlorophenyl hydrazone (CCCP) and 3-(3,4-dichlorophenyl)-1,1-dimethylurea (DCMU) on H2 production of A. halophytica under light and dark conditions and on photosynthetic and respiratory activities. …”
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Effective Microorganisms Improve Growth, Nutrients Uptake, Normalized Difference Vegetation Index, Photosystem II, and Essential Oil While Reducing Canopy Temperature in Water-Stressed Salvia sclarea Plants by Naayem M. Elgaml, Adel B. Salama, Heba Sh. Shehata, Magdi T. Abdelhamid

“…The main processes through which PGPRs aid clary sage plants in coping with water stress include increased macro and micronutrient concentrations (P, N, K, Ca, Mg, Zn, B, Mn, Cu, and Fe), dehydrogenase activity, essential oil, and physiological and growth traits of photosystem II (Fv/Fm), chlorophyll content (SPAD-value), plant’s health (normalized difference vegetation index, NDVI), shoot dry weight, and leaf area in clary plants. …”
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Highly Active Carbonic Anhydrase of the Thylakoid Lumen of <i>Chlamydomonas reinhardtii</i> by Vasily V. Terentyev, Liubov I. Trubitsina, Anna K. Shukshina, Ivan V. Trubitsin, Natalia N. Rudenko

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Beneficial Roles of 1-MCP on Regulation of Photosynthetic Electron Transport and Energy Dissipation in Chrysanthemum Under Heat Stress by Runtian Miao, Xiaoman Liu, Yilin Zhao, Yanli Zhao, Han Dong, Gan Huang, Yonghua Li

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Mangrove plants using deoxyribonucleic acid barcodes for enhancing biodiversity and conservation by M. Basyuni, R. Syahbana, A.B. Rangkuti, N.A. Pradisty, A. Susilowati, L.A.M. Siregar, S.S. Al Mustaniroh, A.A. Aznawi, A. Mubaraq, E.R. Ardli, S.H. Larekeng, V. Leopardas, Y. Isowa, T. Kajita

“…The significant differences were as follows: inter- and intraspecific genetic distance (probability (p) <0.001), maturase-K (probability = 0.0001), combination maturase-K + photosystem II reaction center protein A (probability = 0.0008), maturase-K + ribulose 1,5-bisphosphate carboxylase/oxygenase (probability = 0.0008), maturase-K + internal transcribed spacer (probability = 0.0003), ribulose 1,5-bisphosphate carboxylase/oxygenase + internal transcribed spacer (probability = 0.0002), photosystem II reaction center protein A + internal transcribed spacer (probability = 7.051e-05), and three combined markers maturase-K + photosystem II reaction center protein A + internal transcribed spacer (probability = 0.0007). …”
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Identification and characteristics of differentially expressed genes under UV-B stress in Gossypium hirsutum by Xiaolin Song, Yingjie Zhu, Ying Bao

“…Further analysis revealed that UV-B stress impaired photosynthesis mainly by damaging photosystem II (PSII) and inhibiting electron transport, whereas G. hirsutum responded to UV-B stress by synthesizing secondary metabolites such as anthocyanins and lignin. …”
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Effects of Temperature and Light Intensity on the Growth and Physiological and Biochemical Characteristics of Young Sporophyte of a Novel Saccharina japonica "Huangguan No.2" by Guiyang SONG, Zhourui LIANG, Xiaoping LU, Yanmin YUAN, Wenjun WANG

“…Under low light [10 μmol photons/(m2·s)] group, Fv/Fm, α, actual quantum yield of photosystem Ⅱ [Y(Ⅱ)], the chlorophyll-a contents significantly increased. …”
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Extreme plasticity in the photosystem composition of a low‐light Prochlorococcus ecotype in response to iron and light by Xin Zhang, William G. Sunda, Haizheng Hong, Dalin Shi

“…The response of the cells to variations in Fe and light involved differential changes in the cellular content of low‐Fe photosystem II (PSII) and Fe‐rich photosystem I (PSI), and associated up to 23‐fold changes in PSII : PSI ratios, showing an unprecedented extreme plasticity of the photosynthetic apparatus. …”
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Light-Induced Tyrosine Radical Formation from Ruthenium-Tyrosine Complex Anchored to SnO2 Semiconductor by Raed Ghanem

“…Steady state spectroscopy and flash photolysis measurements were used to study the multistep electron transfer in a supramolecular complex adsorbed on the surface of nanocrystalline SnO2 in order to mimic the function of the tyrosineZ and chlorophyll unit P680 in natural photosystem II (PSII). A ruthenium(II)-tris(bipyridyl) complex covalently linked to an L-tyrosine ethyl ester through an amide bond was anchored to the surface of nanocrystalline SnO2 via four carboxylic acid groups linked to the bpy ligands. …”
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Arabidopsis conditional photosynthesis mutants abc1k1 and var2 accumulate partially processed thylakoid preproteins and are defective in chloroplast biogenesis by Joy Collombat, Manfredo Quadroni, Véronique Douet, Rosa Pipitone, Fiamma Longoni, Felix Kessler

“…In this study we used 680 nm red light to overexcite Photosystem II and disrupt photosynthesis in two conditional mutants (var2 and abc1k1) which reversibly arrested chloroplast biogenesis. …”
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Evaluation of Preemergence Herbicide Programs for Control of Protoporphyrinogen Oxidase-Resistant Amaranthus palmeri in Soybean by Michael M. Houston, L. Tom Barber, Jason K. Norsworthy, Trent L. Roberts

“…At 28 DAT, treatments including mixtures of a very-long-chain fatty acid (VLCFA) plus the photosystem II- (PSII-) inhibiting herbicide metribuzin provided increased control over single herbicide sites of action (SOA) or herbicides mixtures to which Palmer amaranth was resistant. …”
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Allocation of Secondary Metabolites, Photosynthetic Capacity, and Antioxidant Activity of Kacip Fatimah (Labisia pumila Benth) in Response to CO2 and Light Intensity by Mohd Hafiz Ibrahim, Hawa Z. E. Jaafar, Ehsan Karimi, Ali Ghasemzadeh

“…As CO2 levels increased from 400 to 1200 μmol/mol the photosynthesis, stomatal conductance, fv/fm (maximum efficiency of photosystem II), and PAL activity were enhanced. The production of secondary metabolites displayed a significant negative relationship with maliondialdehyde indicating lowered oxidative stress under high CO2 and low irradiance improved the production of plant secondary metabolites that simultaneously enhanced the antioxidant activity (DPPH), thus improving the medicinal value of Labisia pumila under this condition.…”
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Contrasting salinity effects of artificial seawater and sodium chloride on Carica papaya L. cultivar Red Lady physiology and growth by Edivan Rodrigues de Souza, Bruce Schaffer, Ana I. Vargas, Aline de Camargo Santos, Edwin Antonio Gutierrez Rodriguez

“…Methods This study compared plant growth, physiological, and nutritional responses, including leaf gas exchange, maximal potential quantum efficiency of photosystem II (the ratio of variable to maximum chlorophyll fluorescence; Fv/Fm), the leaf chlorophyll index (LCI), electrolyte leakage (EL), leaf relative water content (RWC), leaf water potential (Ψw), leaf osmotic potential (Ψo), leaf and root N, P, K, Ca, Mg, Na and Cl contents, and growth of potted ‘Red Lady’ papaya plants, in a calcined clay substrate, irrigated with NaCl or artificial seawater (Instant Ocean®) at six soil electrical conductivity (EC) levels (0, 1, 2, 3, 4 or 6 dS m−1). …”
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Organic compost in promoting growth and photosynthetic performance of Pereskia aculeata Mill. (Cactaceae) saplings by Nina Machado Suzigan, Gustavo dos Santos Cardoso, Nicole Almeida Barbosa, Giulianna Carolina Pincela da Costa, Geovana Gomes, Sara Dias Moura, Mônica Ellen Regis de Oliveira, Luiz Fernandes Cardoso Campos, Hyrandir Cabral de Melo, Letícia de Almeida Gonçalves

“…The rate of net photosynthesis and effective quantum efficiency of Photosystem II also significantly increased with the incorporation of organic compost into the substrate. …”
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From fluorescence to biomass: A comprehensive analysis via crop modeling and sensing techniques by Georgios Ntakos, Egor Prikaziuk, Nastassia Vilfan, Tamme van der Wal, Christiaan van der Tol

“…Utilizing leaf fluorescence measurements, such as the efficiency of photosystem II (ϕ2) and the electron transport rate, gathered from two fields in the Netherlands from May to September 2019, we determined the Amax to be 34 kg CO2 ha−1hr−1 with a standard deviation of 6.6 kg CO2 ha−1hr−1. …”
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The Wine Quality of Merlot Relies in Irrigation Supplementation and Spotlights Sustainable Production Constraints in Mediterranean-Type Ecosystems by Camila Ribalta-Pizarro, Paula Muñoz, Sergi Munné-Bosch

“…We assessed water stress markers such as leaf relative water content, leaf hydration, and the maximum efficiency of photosystem II photochemistry, as well as grape and wine quality parameters, wine acceptability, and preference with a panel composed of 100 participants. …”
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Effects of limited introgressions from Triticum timopheevii Tausch. into the genome of bread wheat (Triticum aestivum L.) on physiological and biochemical traits under normal water... by T. A. Pshenichnikova, A. V. Permyakov, S. V. Osipova, M. D. Permyakova, E. G. Rudikovskaya, V. V. Verchoturov

“…Additionally, the actual effectiveness and electron transport rate of photosystem II and chlorophyll and carotenoid content were reduced as well as the total antioxidant capacity (approximately three-fold) under water stress. …”
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Photochemical activity in developing pea (<i>Pisum sativum</i> L.) cotyledons depends on the light transmittance of covering tissues and the spectral composition of light by G. N. Smolikova, N. V. Stepanova, A. M. Kamionskaya, S. S. Medvedev

“…At the early and middle maturation stages, the maximum quantum yield of photosystem II (Fv/Fm) averaged 0.5 at the periphery of cotyledons and 0.3 at their center. …”
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Genotype-dependent resilience mediated by melatonin in sweet corn by Tahoora Batool Zargar, Mawia Sobh, Oqba Basal, Szilvia Veres

“…In addition, melatonin increased photosystem II efficiency (Fv/Fm) in all genotypes with 27% increase in Royalty and improved quantum yield across all genotypes, regardless of the water deficit level. …”
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