45 research outputs found
Caryophyllales 2015 in Berlin and the Global Caryophyllales Initiative
Fil: Arias, Salvador. Universidad Nacional Autónoma de México; MéxicoFil: Berendsohn, Walter G.. Freie Universität Berlin; AlemaniaFil: Borsch, Thomas. Freie Universität Berlin; AlemaniaFil: Flores Olvera, Hilda. Universidad Nacional Autónoma de México; MéxicoFil: Ochoterena, Helga. Universidad Nacional Autónoma de México; MéxicoFil: von Mering, Sabine. Freie Universität Berlin; AlemaniaFil: Zuloaga, Fernando Omar. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica Darwinion. Academia Nacional de Ciencias Exactas, Físicas y Naturales. Instituto de Botánica Darwinion; Argentin
A MediaWiki implementation of single-access keys
Design principles, features, and data exchange options of an
open source implementation of single access keys for the collaborative
MediaWiki platform are presented
Morphological and molecular analysis support the identity of Arenaria pycnophylloides (Caryophyllaceae, Arenarieae), and the exclusion of the genera Sabulina from the Argentinian flora
Minuartia altoandina ha sido descrita como una especie endémica para el noroeste argentino, y posteriormente, transferida al género Sabulina. En la presente contribución, sobre la base de observaciones morfológicas y datos moleculares, se propone aquí a Sabulina altoandina como un sinónimo heterotípico de Arenaria pycnophylloides, especie nativa de las regiones altoandinas de Bolivia y del noroeste argentino; y como consecuencia, se excluye al género Sabulina de la Flora Argentina. Por otro lado, se sinonimiza a A. pycnophylloides var. compacta bajo A. pycnophylloides, y, además, el nombre de esta variedad se lectotipifica. Se brinda una descripción morfológica de A. pycnophylloides y se aporta una lámina fotográfica del taxón para facilitar la identificación de la especie. Adicionalmente, se presenta un mapa de distribución de la especie, y se excluye de la Flora de Perú.Minuartia altoandina has been described as an endemic species for northwestern Argentina, and later transferred to the genus Sabulina. In this contribution and based on morphological observations and molecular data, Sabulina altoandina is proposed here as a heterotypic synonym of Arenaria pycnophylloides, a native species to the high Andean regions of Bolivia and northwestern Argentina; as a consequence, the genus Sabulina is excluded from the Argentinian Flora. On the other hand, A. pycnophylloides var. compacta is synonymized under A. pycnophylloides, and in addition, the name of this variety is lectotypified. A morphological description of A. pycnophylloides and a photographic plate of the taxon are provided to facilitate identification of the species. Additionally, a distribution map of the species is provided and is excluded from the Peruvian Flora.Fil: Zanotti, Christian Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica Darwinion. Academia Nacional de Ciencias Exactas, Físicas y Naturales. Instituto de Botánica Darwinion; ArgentinaFil: Chiarini, Franco Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Von Mering, Sabine. Freie Universität Berlin; AlemaniaFil: Acosta, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica Darwinion. Academia Nacional de Ciencias Exactas, Físicas y Naturales. Instituto de Botánica Darwinion; Argentin
D3.2 DiSSCo Digitisation Guides Website - Consolidating Knowledge on Collections Mobilisation
In order to support the digitisation activities of DiSSCo, we have considered how best to prepare
collections for digitisation, digitise them, curate their associated data, publish those data, and
measure the outputs of projects and programmes. We have examined options and approaches for
different types and sizes of collections, when outsourcing should be considered, and what different
project management approaches are most appropriate in this range of circumstances.
This report describes the approach we have taken to developing an online community-edited
manual, our guidelines, other relevant resources and platforms, and a set of recommendations on
how to develop and this work to enhance future digitisation capacity across DiSSCo collectionholding organisations.info:eu-repo/semantics/publishedVersio
Comparative Functional Analysis of the Caenorhabditis elegans and Drosophila melanogaster Proteomes
The nematode Caenorhabditis elegans is a popular model system in genetics, not least because a majority of human disease genes are conserved in C. elegans. To generate a comprehensive inventory of its expressed proteome, we performed extensive shotgun proteomics and identified more than half of all predicted C. elegans proteins. This allowed us to confirm and extend genome annotations, characterize the role of operons in C. elegans, and semiquantitatively infer abundance levels for thousands of proteins. Furthermore, for the first time to our knowledge, we were able to compare two animal proteomes (C. elegans and Drosophila melanogaster). We found that the abundances of orthologous proteins in metazoans correlate remarkably well, better than protein abundance versus transcript abundance within each organism or transcript abundances across organisms; this suggests that changes in transcript abundance may have been partially offset during evolution by opposing changes in protein abundance
Cell-Sorting at the A/P Boundary in the Drosophila Wing Primordium: A Computational Model to Consolidate Observed Non-Local Effects of Hh Signaling
Non-intermingling, adjacent populations of cells define compartment boundaries;
such boundaries are often essential for the positioning and the maintenance of
tissue-organizers during growth. In the developing wing primordium of
Drosophila melanogaster, signaling by the secreted protein
Hedgehog (Hh) is required for compartment boundary maintenance. However, the
precise mechanism of Hh input remains poorly understood. Here, we combine
experimental observations of perturbed Hh signaling with computer simulations of
cellular behavior, and connect physical properties of cells to their Hh
signaling status. We find that experimental disruption of Hh signaling has
observable effects on cell sorting surprisingly far from the compartment
boundary, which is in contrast to a previous model that confines Hh influence to
the compartment boundary itself. We have recapitulated our experimental
observations by simulations of Hh diffusion and transduction coupled to
mechanical tension along cell-to-cell contact surfaces. Intriguingly, the best
results were obtained under the assumption that Hh signaling cannot alter the
overall tension force of the cell, but will merely re-distribute it locally
inside the cell, relative to the signaling status of neighboring cells. Our
results suggest a scenario in which homotypic interactions of a putative Hh
target molecule at the cell surface are converted into a mechanical force. Such
a scenario could explain why the mechanical output of Hh signaling appears to be
confined to the compartment boundary, despite the longer range of the Hh
molecule itself. Our study is the first to couple a cellular vertex model
describing mechanical properties of cells in a growing tissue, to an explicit
model of an entire signaling pathway, including a freely diffusible component.
We discuss potential applications and challenges of such an approach
A taxonomic backbone for the global synthesis of species diversity in the angiosperm order Caryophyllales
The Caryophyllales constitute a major lineage of flowering plants with approximately 12500 species in 39 families. A taxonomic backbone at the genus level is provided that reflects the current state of knowledge and accepts 749 genera for the order. A detailed review of the literature of the past two decades shows that enormous progress has been made in understanding overall phylogenetic relationships in Caryophyllales. The process of re-circumscribing families in order to be monophyletic appears to be largely complete and has led to the recognition of eight new families (Anacampserotaceae, Kewaceae, Limeaceae, Lophiocarpaceae, Macarthuriaceae, Microteaceae, Montiaceae and Talinaceae), while the phylogenetic evaluation of generic concepts is still well underway. As a result of this, the number of genera has increased by more than ten percent in comparison to the last complete treatments in the Families and genera of vascular plants” series. A checklist with all currently accepted genus names in Caryophyllales, as well as nomenclatural references, type names and synonymy is presented. Notes indicate how extensively the respective genera have been studied in a phylogenetic context. The most diverse families at the generic level are Cactaceae and Aizoaceae, but 28 families comprise only one to six genera. This synopsis represents a first step towards the aim of creating a global synthesis of the species diversity in the angiosperm order Caryophyllales integrating the work of numerous specialists around the world
The SIB Swiss Institute of Bioinformatics' resources: focus on curated databases
The SIB Swiss Institute of Bioinformatics (www.isb-sib.ch) provides world-class bioinformatics databases, software tools, services and training to the international life science community in academia and industry. These solutions allow life scientists to turn the exponentially growing amount of data into knowledge. Here, we provide an overview of SIB's resources and competence areas, with a strong focus on curated databases and SIB's most popular and widely used resources. In particular, SIB's Bioinformatics resource portal ExPASy features over 150 resources, including UniProtKB/Swiss-Prot, ENZYME, PROSITE, neXtProt, STRING, UniCarbKB, SugarBindDB, SwissRegulon, EPD, arrayMap, Bgee, SWISS-MODEL Repository, OMA, OrthoDB and other databases, which are briefly described in this article