Photosynthesis Research

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An improved model of C3 photosynthesis at high CO2: Reversed O2 sensitivity explained by lack of glycerate reentry into the chloroplast
Photosynthesis Research - - 1991
P. C. Harley, Thomas D. Sharkey
Hydrogen peroxide generation and antioxidant enzyme activities in the leaves and roots of wheat cultivars subjected to long-term soil drought stress
Photosynthesis Research - Tập 125 - Trang 279-289 - 2015
Irada M. Huseynova, Durna R. Aliyeva, Alamdar Ch. Mammadov, Jalal A. Aliyev
The dynamics of the activity of catalase, ascorbate peroxidase, guaiacol peroxidase, and benzidine peroxidase, as well as the level of hydrogen peroxide in the vegetative organs of durum wheat (Triticum durum Desf.) cultivars was studied under long-term soil drought conditions. It was established that hydrogen peroxide generation occurred at early stages of stress in the tolerant variety Barakatli...... hiện toàn bộ
Light and growth temperature alter carbon isotope discrimination and estimated bundle sheath leakiness in C4 grasses and dicots
Photosynthesis Research - Tập 91 - Trang 47-58 - 2007
Jiří Kubásek, Jiří Šetlík, Simon Dwyer, Jiří Šantrůček
We combined measurements of short-term (during gas exchange) and long-term (from plant dry matter) carbon isotope discrimination to estimate CO2 leakiness from bundle sheath cells in six C4 species (three grasses and three dicots) as a function of leaf insertion level, growth temperature and short-term irradiance. The two methods for determining leakiness yielded similar results (P > 0.05) for all...... hiện toàn bộ
Active in situ and passive airborne fluorescence measurements for water stress detection on a fescue field
Photosynthesis Research - Tập 155 - Trang 159-175 - 2022
Ismael Moya, Hildo Loayza, María-Llanos López, Juan Manuel Sánchez, Yves Goulas, Abderrahmane Ounis, Roberto Quiroz, Alfonso Calera
Ledflex is a fluorometer adapted to measure chlorophyll fluorescence at the canopy level. It has been described in detail by Moya et al. (2019), Photosynthesis Research. https://doi.org/10.1007/s11120-019-00642-9...... hiện toàn bộ
Coupling biology to synthetic nanomaterials for semi-artificial photosynthesis
Photosynthesis Research - Tập 143 Số 2 - Trang 193-203 - 2020
Brown, Katherine A., King, Paul W.
Biohybrid artificial photosynthesis aims to combine the advantages of biological specificity with a range of synthetic nanomaterials to create innovative semi-synthetic systems for solar-to-chemical conversion. Biological systems utilize highly efficient molecular catalysts for reduction–oxidation reactions. They can operate with minimal overpotentials while selectively channeling reductant e...... hiện toàn bộ
Uncovering channels in photosystem II by computer modelling: current progress, future prospects, and lessons from analogous systems
Photosynthesis Research - Tập 98 - Trang 503-522 - 2008
Felix M. Ho
Even prior to the publication of the crystal structures for photosystem II (PSII), it had already been suggested that water, O2 and H+ channels exist in PSII to achieve directed transport of these molecules, and to avoid undesirable side reactions. Computational efforts to uncover these channels and investigate their properties are still at early stages, and have so far only been based on the stat...... hiện toàn bộ
Bacteriochlorophyll c monomers, dimers, and higher aggregates in dichloromethane, chloroform, and carbon tetrachloride
Photosynthesis Research - Tập 25 - Trang 25-37 - 1990
John M. Olson, Jack P. Pedersen
Bacteriochlorophyll c in vivo is a mixture of at least 5 homologs, all of which form aggregates in CH2Cl2, CHCl3 and CCl4. Three homologs exist mainly in the 2-R-(1-hydroxyethyl) configuration, whereas the other two homologs, 4-isobutyl-5-ethyl and 4-isobutyl-5-methyl farnesyl bacteriochlorophyll c, exist mainly in the 2-S-(1-hydroxyethyl) configuration (Smith KM, Craig GW, Kehres LA and Pfennig N...... hiện toàn bộ
The ligand-to-metal charge transfer excited state of [Re(dmpe)3]2+
Photosynthesis Research - Tập 151 Số 2 - Trang 155-161 - 2022
Rodriguez, Tayliz M., Deegbey, Mawuli, Jakubikova, Elena, Dempsey, Jillian L.
The ligand-to-metal charge transfer (LMCT) transitions of [Re(dmpe)3]2+ (dmpe = bis-1,2-(dimethylphosphino)ethane) were interrogated using UV/Vis absorbance spectroscopy, photoluminescence spectroscopy, and time-dependent density functional theory. The solvent dependence of the lowest energy charge transfer transition was quantified; no solvatochromism was observed. TD-DFT calculations reveal the ...... hiện toàn bộ
Re-evaluation of the side effects of cytochrome b6f inhibitor dibromothymoquinone on photosystem II excitation and electron transfer
Photosynthesis Research - Tập 117 - Trang 489-496 - 2013
Ahmed Belatik, David Joly, Surat Hotchandani, Robert Carpentier
Dibromothymoquinone (DBMIB) has been used as a specific inhibitor of plastoquinol oxidation at the Q0 binding site of the cytochrome b6f complex for 40 years. It is thought to suppress electron transfer between photosystem (PS) II and I, as well as cyclic electron transfer around PSI. However, DBMIB has also been reported to act as a quencher of chlorophyll excited states. In this study, we have r...... hiện toàn bộ
Phycobiliprotein diffusion in chloroplasts of cryptophyte Rhodomonas CS24
Photosynthesis Research - - 2009
Tihana Mirkovic, Krystyna E. Wilk, Paul M. G. Curmi, Gregory D. Scholes
Unicellular cryptophyte algae employ antenna proteins with phycobilin chromophores in their photosynthetic machinery. The mechanism of light harvesting in these organisms is significantly different than the energy funneling processes in phycobilisomes utilized by cyanobacteria and red algae. One of the most striking features of cryptophytes is the location of the water-soluble phycobiliproteins, w...... hiện toàn bộ
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