Gou, Yuxiao Higuchi, Tomihiko Iino, Yuki Nagasaka, Tsuyoshi Shimizu, Yuichi Shirai, Kotaro Kitagawa, Takashi
Published in
Frontiers in Marine Science
Reconstruction of water temperatures experienced by marine fishes using otolith oxygen stable isotopes (δ 18O) as natural thermometers has been proven to be a useful approach for estimating migration routes or movement patterns. This method is based on the mechanism that the equilibrium fractionation of δ 18O otolith against ambient water exhibits ...
Krylov, D. P.
Published in
Petrology
New 18O/16O β-factors have been calibrated against temperature for titanite (considering the principal isomorphic substitutions Al + F ⇔ Ti + O, Ti + O ⇔ Al + OH, Ti + O ⇔ Fe3+ + OH) and ilmenite (accounting for Fe ⇔ Mg substitution) for the first time using the frozen-phonon approach of the density functional theory. The equilibrium oxygen isotope...
Polyakov, V. B. Mironenko, M. V. Alenina, M. V.
Published in
Geochemistry International
Abstract—The GEOCHEQ_Isotope software package, elaborated previously for modeling chemical and carbon isotope equilibria in hydrothermal and hydrogeochemical systems by minimizing the Gibbs energy, is extended to the simultaneous calculation of carbon and oxygen isotopic effects. Similar to what was done for carbon, the β-factor formalism was used ...
Dubinina, E. O. Andreeva, O. A. Avdeenko, A. S. Andreeva, I. A. Jianqing, Ji
Published in
Petrology
The mechanisms of the occurrence of nonequilibrium oxygen isotope fractionation between olivine and plagioclase phenocrysts and the groundmass of rocks (from alkaline basalts to alkaline rhyolites) of Changbaishan volcano are considered. The basaltic trachyandesite–trachyte–comendite–pantellerite rock series shows a systematic increase of the δ18O ...
Florez-Sarasa, Igor Obata, Toshihiro Del-Saz, Néstor Fernández Reichheld, Jean-Philippe Meyer, Etienne Rodríguez-Concepción, Manuel Ribas-Carbo, Miquel Fernie, Alisdair
The alternative oxidase (AOX) constitutes a nonphosphorylating pathway of electron transport in the mitochondrial respiratory chain that provides flexibility to energy and carbon primary metabolism. Its activity is regulated in vitro by the mitochondrial thioredoxin (TRX) system which reduces conserved cysteines residues of AOX. However, in vivo ev...
Romero-Munar, Antònia Del-Saz, Néstor Fernández Ribas-Carbó, Miquel Flexas, Jaume Baraza, Elena Florez-Sarasa, Igor Fernie, Alisdair Robert Gulías, Javier
Published in
Plant, cell & environment
The effect of arbuscular mycorrhiza (AM) symbiosis on plant growth is associated with the balance between costs and benefits. A feedback regulation loop has been described in which the higher carbohydrate cost to plants for AM symbiosis is compensated by increases in their photosynthetic rates. Nevertheless, plant carbon balance depends both on pho...
Florez-Sarasa, Igor Ribas-Carbo, Miquel Del-Saz, Néstor Fernández Schwahn, Kevin Nikoloski, Zoran Fernie, Alisdair R Flexas, Jaume
Published in
The New phytologist
The mitochondrial alternative oxidase pathway (AOP) has been suggested to act as a sink for excess reducing power generated in the chloroplast under high-light (HL) stress and thus may reduce photoinhibition. The aim of this study was to compare different species to investigate the in vivo regulation and role of AOP under HL stress. The in vivo act...
Su, Ruixia Zhu, Zhaoyu Chen, Xiaomin
Published in
Chinese Science Bulletin
Coral colonies of Porites lutea and P. lobata were collected from the east offshore of Hainan Island, South China Sea. Oxygen isotope ratios, 18O/16O, were analyzed along the major axis of growth at a resolution of 25–28 samples within an annual band from three colonies in order to study the relation between coral oxygen isotopic composition and th...
Zheng, Yongfei Wei, Chunsheng Zhou, Gentao Xu, Baolong
Published in
Science in China Series D: Earth Sciences
The increment method is adopted to calculate oxygen isotope fractionation factors for mantle minerals, particularly for the polymorphic phases of MgSiO3 and Mg2SiO4. The results predict the following sequence of18O-enrichment:pyroxene (Mg, Fe, Ca)2Si2O6>olivine (Mg, Fe)2SiO4 > spinel (Mg, Fe)2SiO4> ilmenite (Mg, Fe, Ca) SiO3>perovskite (Mg, Fe, Ca)...
