283 research outputs found
« Le roi est mort. Vive la reine. » Contraintes et enjeux autour du « Recueil de diverses poésies sur le trespas de Henri le Grand »
Le tombeau poĂ©tique composĂ© Ă lâoccasion de la mort dâHenri IV montre lâintrication de deux niveaux de contraintes de lâĂ©criture poĂ©tique. Le premier se joue au sein des Ă©loges funĂšbres eux-mĂȘmes, dans leurs aspects formels et thĂ©matiques, et dans la mise en sĂ©rie des textes. Le second niveau opĂšre Ă travers lâinstrumentalisation du tombeau Ă des fi ns plus politiques de soutien Ă la reine rĂ©gente Ă qui le recueil est dĂ©diĂ©
Strategies for the development of social, political and attitudinal generic competences in engineering careers
Investigar y proponer estrategias para el desarrollo de competencias genĂ©ricas sociales, polĂticas y actitudinales tomando como punto de partida las caracterĂsticas de los estudiantes actuales y las alternativas pedagĂłgicas que se pueden aplicar en las carreras de IngenierĂaInvestigate and propose strategies for the development of generic social, political and attitudinal competences taking as a starting point the characteristics of current students and the pedagogical alternatives that can be applied in engineering career
Marker-assisted introgression of the salinity tolerance locus Saltol in temperate japonica rice
Background Rice is one of the most salt sensitive crops at seedling, early vegetative and reproductive stages. Varieties
with salinity tolerance at seedling stage promote an efficient growth at early stages in salt affected soils, leading
to healthy vegetative growth that protects crop yield. Saltol major QTL confers capacity to young rice plants growing
under salt condition by maintaining a low Na+/
K+ molar ratio in the shoots.
Results Marker-assisted backcross (MABC) procedure was adopted to transfer Saltol locus conferring salt tolerance
at seedling stage from donor indica IR64-Saltol to two temperate japonica varieties, Vialone Nano and Onice. Forward
and background selections were accomplished using polymorphic KASP markers and a final evaluation of genetic
background recovery of the selected lines was conducted using 15,580 SNP markers obtained from Genotyping by
Sequencing. Three MABC generations followed by two selfing, allowed the identification of introgression lines achieving
a recovery of the recurrent parent (RP) genome up to 100% (based on KASP markers) or 98.97% (based on GBS).
Lines with highest RP genome recovery (RPGR) were evaluated for agronomical-phenological traits in field under nonsalinized
conditions. VN1, VN4, O1 lines were selected considering the agronomic evaluations and the RPGR% results
as the most interesting for commercial exploitation. A physiological characterization was conducted by evaluating
salt tolerance under hydroponic conditions. The selected lines showed lower standard evaluation system (SES) scores:
62% of VN4, and 57% of O1 plants reaching SES 3 or SES 5 respectively, while only 40% of Vialone Nano and 25% of
Onice plants recorded scores from 3 to 5, respectively. VN1, VN4 and O1 showed a reduced electrolyte leakage values,
and limited negative effects on relative water content and shoot/root fresh weight ratio.
Conclusion The Saltol locus was successfully transferred to two elite varieties by MABC in a time frame of three years.
The application of background selection until BC3F3
allowed the selection of lines with a RPGR up to 98.97%. Physiological
evaluations for the selected lines indicate an improved salinity tolerance at seedling stage. The results supported
the effectiveness of the Saltol locus in temperate japonica and of the MABC procedure for recovering of the RP
favorable traits
A phylogenetic framework of the legume genus Aeschynomene for comparative genetic analysis of the Nod-dependent and Nod-independent symbioses
Background : Among semi-aquatic species of the legume genus Aeschynomene, some have the property of being nodulated by photosynthetic Bradyrhizobium lacking the nodABC genes necessary for the synthesis of Nod factors. Knowledge of the specificities underlying this Nod-independent symbiosis has been gained from the model legume Aeschynomene evenia but our understanding remains limited due to the lack of comparative genetics with related taxa using a Nod factor-dependent process. To fill this gap, we combined different approaches to perform a thorough comparative analysis in the genus Aeschynomene. Results: This study significantly broadened previous taxon sampling, including in allied genera, in order to construct a comprehensive phylogeny. In the phylogenetic tree, five main lineages were delineated, including a novel lineage, the Nod-independent clade and another one containing a polytomy that comprised several Aeschynomene groups and all the allied genera. This phylogeny was matched with data on chromosome number, genome size and low-copy nuclear gene sequences to reveal the diploid species and a polytomy containing mostly polyploid taxa. For these taxa, a single allopolyploid origin was inferred and the putative parental lineages were identified. Finally, nodulation tests with different Bradyrhizobium strains revealed new nodulation behaviours and the diploid species outside of the Nod-independent clade were compared for their experimental tractability and genetic diversity. Conclusions: The extended knowledge of the genetics and biology of the different lineages sheds new light of the evolutionary history of the genus Aeschynomene and they provide a solid framework to exploit efficiently the diversity encountered in Aeschynomene legumes. Notably, our backbone tree contains all the species that are diploid and it clarifies the genetic relationships between the Nod-independent clade and the Nod-dependent lineages. This study enabled the identification of A. americana and A. patula as the most suitable species to undertake a comparative genetic study of the Nod-independent and Nod-dependent symbioses
Genomic Exploration of the Hemiascomycetous Yeasts: 1. A set of yeast species for molecular evolution studies11Sequences and annotations are accessible at: GĂ©noscope (http://www.genoscope.cns.fr), FEBS Letters Website (http://www.elsevier.nl/febs/show/), Bordeaux (http://cbi.genopole-bordeaux.fr/Genolevures) and were deposited into the EMBL database (accession number from AL392203 to AL441602).
AbstractThe identification of molecular evolutionary mechanisms in eukaryotes is approached by a comparative genomics study of a homogeneous group of species classified as Hemiascomycetes. This group includes Saccharomyces cerevisiae, the first eukaryotic genome entirely sequenced, back in 1996. A random sequencing analysis has been performed on 13 different species sharing a small genome size and a low frequency of introns. Detailed information is provided in the 20 following papers. Additional tables available on websites describe the ca. 20â000 newly identified genes. This wealth of data, so far unique among eukaryotes, allowed us to examine the conservation of chromosome maps, to identify the âyeast-specificâ genes, and to review the distribution of gene families into functional classes. This project conducted by a network of seven French laboratories has been designated âGĂ©nolevuresâ
Genomic Exploration of the Hemiascomycetous Yeasts: 19. Ascomycetes-specific genes
AbstractComparisons of the 6213 predicted Saccharomyces cerevisiae open reading frame (ORF) products with sequences from organisms of other biological phyla differentiate genes commonly conserved in evolution from âmaverickâ genes which have no homologue in phyla other than the Ascomycetes. We show that a majority of the âmaverickâ genes have homologues among other yeast species and thus define a set of 1892 genes that, from sequence comparisons, appear âAscomycetes-specificâ. We estimate, retrospectively, that the S. cerevisiae genome contains 5651 actual protein-coding genes, 50 of which were identified for the first time in this work, and that the present public databases contain 612 predicted ORFs that are not real genes. Interestingly, the sequences of the âAscomycetes-specificâ genes tend to diverge more rapidly in evolution than that of other genes. Half of the âAscomycetes-specificâ genes are functionally characterized in S. cerevisiae, and a few functional categories are over-represented in them
De Statuis: christian sources on the âRiot of statuesâ
La informaciĂłn sobre la âRevuelta de las estatuasâ acontecida en AntioquĂa en el año 387 d. C. transmitida por autores cristianos contemporĂĄneos a la asonada y del siglo V d. C. relata los acontecimientos desde diversos gĂ©neros literarios pero con unas lĂneas directrices comunes. La decisiva intervenciĂłn del sector meleciano de la Iglesia antioquena para conseguir el perdĂłn del emperador Teodosio y el retrato de Ă©ste como un monarca obediente a las figuras cristianas son las pautas comunes en los relatos de Juan CrisĂłstomo, Ambrosio de MilĂĄn, SozĂłmeno y Teodoreto de Ciro.The historical account of the âRiot of the Statuesâ of A.D. 387 Antioch found in Christian authors coetaneous to the event and from the Vth century A.D. is provided from different literary genres but approached with common narrative lines. The decisive intervention of the Meletian group of the Antiochene Church in order to obtain the emperor Theodosiusâ forgiveness and his portrait as a submissive ruler to Christian figures are the main leitmotifs in the accounts of John Chrysostom, Ambrose of Milan, Sozomenus and Theodoretus of Cyr.Este
trabajo se enmarca en el proyecto de investigaciĂłn FFI2012-32012
âLa teatralizaciĂłn de la retĂłrica y el establecimiento de un canon
en la literatura griega y latina en la AntigĂŒedad tardĂa (s. III-V)â, del
Ministerio de EconomĂa, Industria y Competitividad
Initial sequencing and analysis of the human genome
The human genome holds an extraordinary trove of information about human development, physiology, medicine and evolution. Here we report the results of an international collaboration to produce and make freely available a draft sequence of the human genome. We also present an initial analysis of the data, describing some of the insights that can be gleaned from the sequence.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/62798/1/409860a0.pd
Erratum to: EuPRAXIA Conceptual Design Report â Eur. Phys. J. Special Topics 229, 3675-4284 (2020), https://doi.org/10.1140/epjst/e2020-000127-8
International audienceThe online version of the original article can be found at http://https://doi.org/10.1140/epjst/e2020-000127-8</A
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