Moderately High Temperatures Inhibit Ribulose-1,5-Bisphosphate Carboxylase/Oxygenase (Rubisco) Activase-Mediated Activation of Rubisco

We tested the hypothesis that light activation of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) is inhibited by moderately elevated temperature through an effect on Rubisco activase. When cotton (Gossypium hirsutum L.) or wheat (Triticum aestivum L.) leaf tissue was exposed to increasing temperatures in the light, activation of Rubisco was inhibited above 35 and 30°C, respectively, and the relative inhibition was greater for wheat than for cotton. The temperature-induced inhibition of Rubisco activation was fully reversible at temperatures below 40°C. In contrast to activation state, total Rubisco activity was not affected by temperatures as high as 45°C. Nonphotochemical fluorescence quenching increased at temperatures that inhibited Rubisco activation, consistent with inhibition of Calvin cycle activity. Initial and maximal chlorophyll fluorescence were not significantly altered until temperatures exceeded 40°C. Thus, electron transport, as measured by Chl fluorescence, appeared to be more stable to moderately elevated temperatures than Rubisco activation. Western-blot analysis revealed the formation of high-molecular-weight aggregates of activase at temperatures above 40°C for both wheat and cotton when inhibition of Rubisco activation was irreversible. Physical perturbation of other soluble stromal enzymes, including Rubisco, phosphoribulokinase, and glutamine synthetase, was not detected at the elevated temperatures. Our evidence indicates that moderately elevated temperatures inhibit light activation of Rubisco via a direct effect on Rubisco activase.

Seawater carbonate chemistry and photosynthetic response of Emiliania huxleyi (CS-369) to UV radiation and elevated temperature duirng experiments, 2011

Changes in calcification of coccolithophores may affect their photosynthetic responses to both, ultraviolet radiation (UVR, 280-400 nm) and temperature. We operated semi-continuous cultures of Emiliania huxleyi (strain CS-369) at reduced (0.1 mM, LCa) and ambient (10 mM, HCa) Ca2+ concentrations and, after 148 generations, we exposed cells to six radiation treatments (>280, >295, >305, >320, >350 and >395 nm by using Schott filters) and two temperatures (20 and 25 °C) to examine photosynthesis and calcification responses. Overall, our study demonstrated that: (1) decreased calcification resulted in a down regulation of photoprotective mechanisms (i.e., as estimated via non-photochemical quenching, NPQ), pigments contents and photosynthetic carbon fixation; (2) calcification (C) and photosynthesis (P) (as well as their ratio) have different responses related to UVR with cells grown under the high Ca2+ concentration being more resistant to UVR than those grown under the low Ca2+ level; (3) elevated temperature increased photosynthesis and calcification of E. huxleyi grown at high Ca2+concentrations whereas decreased both processes in low Ca2+ grown cells. Therefore, a decrease in calcification rates in E. huxleyi is expected to decrease photosynthesis rates, resulting in a negative feedback that further reduces calcification.

R.P. Francisci Suarez, Granatensis, e Societate Iesu doctoris theologi, et in Connimbricensi Academia Sacrarum Literarum primarii professoris opus, De virtute et statu religionis. Quo quid contineatur, index proximus indicabit.

Also issued as part of collection with collective title page, engraved portrait of author, biographical preface, and contents list: "R.P. Francisci Suarez Granatensis, e Societate Iesu Doctoris Theologi, et in Regia Conimbricensi Academia primarij theologiae professoris emeriti Opera omnia quorum cathalogum vide lector in vita authoris. Moguntiae, Sumptibus Hermanni Mylij Birckmanni Excudebat Balthasar Lippius. Anno M. DCXXI."

R.P. Francisci Suarez Granatensis, e Societate Iesu Doctoris Theologi; et in Conimbricensi Academia Sacrarum Litterarum olim Primarij Professoris Emeriti De diuina gratia pars prima[-postrema] : continens prolegomena sex, & duos priores libros de necessitate diuinæ gratiæ ad honesta opera.

Signatures: vol. 1: )(⁶ A-Z⁶ 2A-2P⁶ 2Q⁴; vol. 2: )(² A-Z⁶ 2A-2Z⁶ 3A-3C⁶ 3D⁸ (3D₈ blank).

Doctoris Francisci Suarez Granatensis, de Societate Iesu ... Varia opuscula theologica : 1. De concursu, motione, & auxilio Dei. lib. III. 2. De scientia Dei futurorum contingentium. lib. II. 3. De auxilio efficaci. Breuis resolutio. 4. De libertate diuinae voluntatis. Relectio prior. 5. De reuiuiscentia meritorum. Relectio altera. 6. De iustitia Dei . Disputatio. : cum indice gemino, vno locorum sacræ Scripturæ altero rerum.

Includes index.

R.P. Francisci Suarez, Granatensis, e Societate Iesu doctoris theologi, et in Conimbricensi Academia sacrarum literarum primarij professoris. Defensio fidei Catholicae et apostolicæ aduersus Anglicanæ sectæ errores. : Cum responsione ad Apologiam pro Iuramento fidedelitatis, & præfationem monitoriam sernessimi Iacobi Magnæ Britanniæ Regis. Ad serenissimos totius Christiani orbis Catholicos reges et principes.

Includes index.

The growth of silicon sheets for photovoltaic applications /

The status of silicon sheet development for photovoltaic applications is critically reviewed. Silicon sheet growth processes are classified according to their linear growth rates. The "fast" growth processes, which include edge-defined film-fed growth, silicon on ceramic, dendritic-web growth, and ribbon-to-ribbon growth, are comparatively ranked subject to criteria involving growth stability, sheet productivity, impurity effects, crystallinity, and solar cell results. The status of more rapid silicon ribbon growth techniques, such as horizontal ribbon growth and melt quenching, is also reviewed. The emphasis of the discussions is on examining the viability of these sheet materials as solar cell substrates for low-cost silicon photovoltaic systems.

Limehouse nights : tales of Chinatown /

Short stories.

Illustres Cardinales Armandus. D. de Richelieu et Mazarinus, ... Secretissima instructio & historia universalis ab Anno 1624 usque ad hoc tempora ... cum observationibus politicis ...

Contiene: "Pacta et confoederationes, quorum notitia historiam galliae, et Ministerium utriusque Cardinalis tum Richelij tum Mazarini ... ab Anno 1610 usque ad Annum 1650", comienza en p. [155], vol. 2.

Frederici Ruyschii ... Observationum anatomico-chirurgicarum centuria. Accedit Catalogus rariorum, quae in Museo Ruyschiano asservantur ...

Musaeum anatomicum ruyschianum sive Catalogus rariorum ..., con port. propia y año 1739, p. [101]-188.

Johannis Gaubii Epistola problematica, prima, ad virum clarissimum Fredericum Ruyschium ... De pilis, pinguedine, septoque scroti; nec non de papillis piramidalibus; ut & de corpore reticulari, sub cuticula sito, &c.

Mode of access: Internet.

Thesaurus Zeylanicus : exhibens plantas in insula zeylana naxentes, inter quas plurimae novae species, & genera inveniuntur ... /

"Catalogi duo plantarum africanarum, quorum prior complectitur plantas ab Hermanno observatas, posterior vero illas continet, quas Oldenlandus & Hartogius indagarunt", 33, [1] p.

Cl. Viri D. Petri Michaelis de Heredia... Operum medicinalium ...

Contiene: t. 1: In quo juxta Hippocratis, Galeni et Auicennae mentem perfecté & absolut'e tractatur de febribus... - t. 2: Complectens historias epidemicas seu commentaria in Hippocratem de morbis popularibus - t. 3: In quo complete tractatur de morbis acutis totius corporis humani... - t. 4: In duos libros partitus : quorum primus affectum particularium tractatus aliquot prelustrat, alter de morbis mulierum et utero gerentium accurate disserit.

Frederici Ruyschii responsio ad Godefridi Bidloi libellum, quem vindicias inscripsit.

Mode of access: Internet.

Minutes of General Conference.

Description based on: 55th conference (1908); title from caption.