Catalogue des dessins anciens du Moyen-Age et de la Renaissance (XVe et XVIe siècles), Oeuvres de J. Amman, B. Beham, P. Brueghel, H. Burgkmair, L. Cambiaso, J. Cousin, A. Durer, H. Goltzius, U. Graf, Lagneau, E. de Laune, F. Mazzuola, M. Ostendrofer, J. Palma, Le Primatice, B. Ramenghi, D. Robusti, J. Romain, T. Stimmer, P. Vénronèse, L. de Vinci, etc., etc. ; Dessins, pastels, aquarelles des XVIIe et XVIIIe siècle par N. Berchem, Brauwer, A. Guyp, Dumonstier, C. Dusart, A. Van Dyck, J.-H. Fragonard, Cl. Gellée, Van Goyen, J. Jordaens, J. Lievens, G. Metzu, I. Moucheron, R. Nanteuil, A. Van Ostade, A. Pajou, J.-B. Perronneau, P. Potter, N. Poussin, Rembrandt, P.-P. Rubens, J. Ruysdael, G.-B. Tiepolo, A. et W. Van de Velde, C. Visscher, A. Watteau, etc., etc., composant la collection de M. A. Beurdeley et dont la vente [6e vente] aux enchères publiques, après décès, aura lieu Galerie Georges Petit, 8, rue de Sèze, les mardi 8, mercredi 9 et jeudi 10 juin 1920 / Commissaires-priseurs, Me F. Lair-Dubreuil, Me Henri Baudoin ; experts M. Jules Féral, M. Marius Paulme ; [préface de Marcel Nicolle]

[Vente (Art). 1920-06-08 - 1920-06-10. Paris]

Cloning of a cDNA encoding a plasma membrane-associated, uronide binding phosphoprotein with physical properties similar to viral movement proteins.

Oligogalacturonides are structural and regulatory homopolymers from the extracellular pectic matrix of plants. In vitro micromolar concentrations of oligogalacturonates and polygalacturonates were shown previously to stimulate the phosphorylation of a small plasma membrane-associated protein in potato. Immunologically cross-reactive proteins were detected in plasma membrane-enriched fractions from all angiosperm subclasses in the Cronquist system. Polygalacturonate-enhanced phosphorylation of the protein was observed in four of the six dicotyledon subclasses but not in any of the five monocotyledon subclasses. A cDNA for the protein was cloned from potato. The deduced protein is extremely hydrophilic and has a proline-rich N terminus. The C-terminal half of the protein was predicted to be a coiled coil, suggesting that the protein interacts with other macromolecules. The recombinant protein was found to bind both simple and complex galacturonides. The behavior of the protein suggests several parallels with viral proteins involved in intercellular communication.

Arbuscular mycorrhiza-specific signaling in rice transcends the common symbiosis signaling pathway.

Knowledge about signaling in arbuscular mycorrhizal (AM) symbioses is currently restricted to the common symbiosis (SYM) signaling pathway discovered in legumes. This pathway includes calcium as a second messenger and regulates both AM and rhizobial symbioses. Both monocotyledons and dicotyledons form symbiotic associations with AM fungi, and although they differ markedly in the organization of their root systems, the morphology of colonization is similar. To identify and dissect AM-specific signaling in rice (Oryza sativa), we developed molecular phenotyping tools based on gene expression patterns that monitor various steps of AM colonization. These tools were used to distinguish common SYM-dependent and -independent signaling by examining rice mutants of selected putative legume signaling orthologs predicted to be perturbed both upstream (CASTOR and POLLUX) and downstream (CCAMK and CYCLOPS) of the central, calcium-spiking signal. All four mutants displayed impaired AM interactions and altered AM-specific gene expression patterns, therefore demonstrating functional conservation of SYM signaling between distant plant species. In addition, differential gene expression patterns in the mutants provided evidence for AM-specific but SYM-independent signaling in rice and furthermore for unexpected deviations from the SYM pathway downstream of calcium spiking.

Documenti bibliografici e critici per la storia della fortuna del Fénelon in Italia / par Gabriel Maugain,...

Collection : Bibliothèque de l'Institut français de Florence ; 1

Resumen de la pesquería de anchoveta y otras especies, para reducción. Enero-julio 1973

Expone que la principal característica de la pesquería correspondiente a los meses de marzo-mayo, fue la excepcional intervención de la sardina y otras especies como la anchoveta blanca, jurel, merluza, caballa, etc, sobre todo en las zonas comprendidas entre Supe y el puerto de Ilo.