Results 21 to 30 of about 51,482 (311)

Effects of spine-shading on aspects of photosynthesis for three cactus species

Botan‪ical Sciences, 2016
We evaluated the effect of spine removal on three cactus species varying in spine-shading of stems. Turbinicarpus schmiedickeanus showed the greater spine shading (c. 61 %), followed by Mammillaria zephyranthoides (43 %), and Echinocactus platyacanthus (
Edilia de la Rosa-Manzano, Joel Flores, Pablo Delgado-Sánchez   +2 more
doaj   +1 more source

Origin and evolution of water oxidation before the last common ancestor of the Cyanobacteria [PDF]

, 2015
Photosystem II, the water oxidizing enzyme, altered the course of evolution by filling the atmosphere with oxygen. Here, we reconstruct the origin and evolution of water oxidation at an unprecedented level of detail by studying the phylogeny of all D1 ...
A. William Rutherford, Anisimova, Arato, Arnold, Bader, Beanland, Blankenship, Campbell, Cardona, Cardona, Chu, Chu, Clausen, Cox, Criscuolo, Cser, Dagan, Dau, Debus, Debus, Deusch, Diner, Dismukes, Erickson, Ferreira, Fine, Flannery, Gan, Gan, Giorgi, Gould, Gouy, Guindon, Gupta, Guskov, Hasegawa, Hillier, Hoganson, Hohmann-Marriott, Huson, Ishikita, Ishikita, James W. Murray, Jia, Johnson, Kiss, Klimov, Kopp, Koyama, Kulkarni, Kuroda, Lambreva, Larom, Larsson, Lartillot, Lee, Lidholm, Linke, Loll, Lyons, Marin, Merry, Metz, Michel, Michel, Mimuro, Muh, Mulo, Mulo, Murray, Murray, Nakamura, Nitschke, Nixon, Nixon, Nixon, Ochoa de Alda, Oettmeier, Ogami, Park, Petrouleas, Qian, Rappaport, Rasmussen, Raymond, Rippka, Robinson, Rodriguez-Ezpeleta, Roose, Rutherford, Rutherford, Saito, Sauer, Saw, Sedoud, Service, Shevela, Shi, Shih, Sicora, Sicora, Siegbahn, Sievers, Sugiura, Sugiura, Sugiura, Sugiura, Summerfield, Tanai Cardona, Tichy, Toepel, Turner, Ulas, Umena, Vass, Vassiliev, Vermaas, Vermaas, Vermaas, Vinyard, Waldbauer, Wegener, Yoon, Zehr, Zhang, Zhang, Zimmermann   +126 more
core   +1 more source

Selenium induced lower respiratory potential in Glycine max (L.) Merr.

Acta Agriculturae Slovenica, 2010
Effect of selenium (Se) was studied in soybean (Glycine max (L.) Merr.) cv. Olna in Ljubljana, Slovenia. Se was added to plants as foliary spraying. Quantum yield of photosystem II (PSII) and respiratory potential measured as ETS activity of mitochondria
Špela MECHORA, Mateja GERM
doaj   +1 more source

Knock-Out of the Genes Coding for the Rieske Protein and the ATP-Synthase δ-Subunit of Arabidopsis [PDF]

, 2003
In Arabidopsis, the nuclear genes PetC and AtpD code for the Rieske protein of the cytochrome b6/f (cyt b6/f) complex and the δ-subunit of the chloroplast ATP synthase (cpATPase), respectively.
Dietzmann, Angela, Jahns, Peter, Joliot, Anne, Joliot, Pierre, Leister, Dario, Levin, Joshua Z., Maiwald, Daniela, Pesaresi, Paolo, Salamini, Francesco   +8 more
core   +1 more source

Photophosphorylation Associated with Photosystem II [PDF]

Plant Physiology, 1981
Photosystem II-dependent cyclic photophosphorylation activity produced by addition of p-phenylenediamines to KCN-Hg-NH(2)OH-inhibited chloroplasts is the product of two separate reactions when a proton/electron donor is the catalyst. The activity observed with an electron donor as catalyst consists of a single reaction.
J A, Guikema, C F, Yocum
openaire   +2 more sources

Quality control of Photosystem II: reversible and irreversible protein aggregation decides the fate of Photosystem II under excessive illumination

Frontiers in Plant Science, 2013
In response to excessive light, the thylakoid membranes of higher plant chloroplasts show dynamic changes including the degradation and reassembly of proteins, a change in the distribution of proteins, and large-scale structural changes such as ...
Yasusi eYamamoto, Haruka eHori, Suguru eKai, Tomomi eIshikawa, Atsuki eOhnishi, Nodoka eTsumura, Noriko eMorita   +6 more
doaj   +1 more source

Use of chlorophyll fluorescence and P700 absorbance to rapidly detect glyphosate resistance in goosegrass (Eleusine indica)

Journal of Integrative Agriculture, 2015
The rapid detection of glyphosate resistance in goosegrass (Eleusine indica) will enhance our ability to respond to new resistant populations of this major weed.
Tai-jie ZHANG, Li FENG, Xing-shan TIAN, Cai-hong YANG, Jia-dong GAO   +4 more
doaj   +1 more source

Effect of High Cation Concentrations on Photosystem II Activities [PDF]

Plant Physiology, 1978
The effects of wide concentration ranges of NaCl, KCl, and MgCl(2) on ferricyanide reduction and the fluorescence induction curve of isolated spinach (Spinacia oleracea) chloroplasts were investigated. Concentrations of the monovalent salts above 100 mm and MgCl(2) above 25 mm produced a decrease in the rate of ferricyanide reduction by thylakoids ...
openaire   +2 more sources

Protective Effects of Selenium on Wheat Seedlings under Salt Stress

Agronomy, 2019
Wheat is a staple food worldwide, but its productivity is reduced by salt stress. In this study, the mitigative effects of 22 μM selenium (Se) on seedlings of the wheat (Triticum aestivum L.) cultivar Taichung SEL.
Chiu-Yueh Lan, Kuan-Hung Lin, Wen-Dar Huang, Chang-Chang Chen   +3 more
doaj   +1 more source

Plants lacking the main light-harvesting complex retain photosystem II macro-organization [PDF]

, 2003
Photosystem II (PSII) is a key component of photosynthesis, the process of converting sunlight into the chemical energy of life. In plant cells, it forms a unique oligomeric macrostructure in membranes of the chloroplasts.
A Haldrup, A Kuttkat, A Zouni, AE Yakushevska, AV Ruban, B Hankamer, B Hankamer, DA Berthold, EJ Boekema, EJ Boekema, EJ Boekema, EJ Boekema, G Garab, GF Peter, H Paulsen, J Andersson, J Barber, J Nield, JF Allen, P Horton, R Croce, RG Walters, S Hobe, S Jansson, S Jansson, T Bibby, UK Laemmli, W Kühlbrandt   +27 more
core   +5 more sources