Sistema de Biorremediación on-line para la Eliminación de Radionúclidos en Aguas Radiactivas

En estudios previos desarrollados en la Central Nuclear de Cofrentes (Valencia), se ha observado que los microorganismos presentes en las aguas radiactivas de las piscinas de almacenamiento de combustible nuclear gastado son capaces de colonizar las superficies metálicas de las paredes y conducciones y formar biopelículas sobre éstas. Estas biopelículas retienen los radionúclidos de las aguas contribuyendo a su descontaminación. En este proyecto, se ha diseñado una planta piloto para la biodescontaminación de las aguas radiactivas. Actualmente el agua radiactiva procedente de las piscinas de combustible se hace pasar por resinas de intercambio iónico que posteriormente tienen que ser gestionadas como residuos radiactivos. En este proyecto, al agua se hace pasar a través de un biorreactor que contiene ovillos de acero inoxidable susceptibles de ser colonizados por los microorganismos existentes en dichas aguas. A su paso por el biorreactor, el agua entra en contacto con el material del ovillo, formándose una biopelícula que retiene los radionúclidos presentes en el agua. La biopelícula es fácilmente eliminada por cualquier procedimiento convencional de descontaminación radioquímica de materiales y los radionúclidos se pueden concentrar en un volumen pequeño de eluyente para su recuperación, disposición final o contención. A continuación, el material del biorreactor puede ser gestionado como material no radiactivo

The Amsterdam Declaration on Fungal Nomenclature

The Amsterdam Declaration on Fungal Nomenclature was agreed at an international symposium convened in Amsterdam on 19–20 April 2011 under the auspices of the International Commission on the Taxonomy of Fungi (ICTF). The purpose of the symposium was to address the issue of whether or how the current system of naming pleomorphic fungi should be maintained or changed now that molecular data are routinely available. The issue is urgent as mycologists currently follow different practices, and no consensus was achieved by a Special Committee appointed in 2005 by the International Botanical Congress to advise on the problem. The Declaration recognizes the need for an orderly transitition to a single-name nomenclatural system for all fungi, and to provide mechanisms to protect names that otherwise then become endangered. That is, meaning that priority should be given to the first described name, except where that is a younger name in general use when the first author to select a name of a pleomorphic monophyletic genus is to be followed, and suggests controversial cases are referred to a body, such as the ICTF, which will report to the Committee for Fungi. If appropriate, the ICTF could be mandated to promote the implementation of the Declaration. In addition, but not forming part of the Declaration, are reports of discussions held during the symposium on the governance of the nomenclature of fungi, and the naming of fungi known only from an environmental nucleic acid sequence in particular. Possible amendments to the Draft BioCode (2011) to allow for the needs of mycologists are suggested for further consideration, and a possible example of how a fungus only known from the environment might be described is presented

Aislamiento y caracterización de melanized, hongos de crecimiento lento de las superficies rocosas semiáridas del centro de España y Mallorca

Tesis doctoral inédita leída en la Universidad Autónoma de Madrid, Facultad de Ciencias, Departamento de Biología Molecular. Fecha de lectura 19-03-200

Process of fungal biodegradation on ground tyres

The present biodegradation process consists in the use of a fungus, "Paecilomyces lilacinus" IMI 117109, for the degradation of commercial ground tyre rubber. Prior to the biodegradation treatment, the tyre crushing is washed to eliminate possible contaminations that may interfere with the process. Subsequently the fungus is cultured in the presence of the tyre rubber in a liquid medium and shaking conditions. In a second step, the excess of liquid medium is removed. After the incubation period, the growth of the fungus in the material can be observed and its degradation is showed. This process of fungal biodegradation is an alternative to the degradation processes currently employed, allowing to reduce the accumulation of used tyre rubber and taking advantage of the products of its biodegradation for its reuse in the tyre industry or its use in other industrial processes

Process of fungal biodegradation on ground tyres

The present biodegradation process consists in the use of a fungus, "Paecilomyces lilacinus" IMI 117109, for the degradation of commercial ground tyre rubber. Prior to the biodegradation treatment, the tyre crushing is washed to eliminate possible contaminations that may interfere with the process. Subsequently the fungus is cultured in the presence of the tyre rubber in a liquid medium and shaking conditions. In a second step, the excess of liquid medium is removed. After the incubation period, the growth of the fungus in the material can be observed and its degradation is showed. This process of fungal biodegradation is an alternative to the degradation processes currently employed, allowing to reduce the accumulation of used tyre rubber and taking advantage of the products of its biodegradation for its reuse in the tyre industry or its use in other industrial processes

Roof-Inhabiting Cousins of Rock-Inhabiting Fungi: Novel Melanized Microcolonial Fungal Species from Photocatalytically Reactive Subaerial Surfaces

Subaerial biofilms (SAB) are an important factor in weathering, biofouling, and biodeterioration of bare rocks, building materials, and solar panel surfaces. The realm of SAB is continually widened by modern materials, and the settlers on these exposed solid surfaces always include melanized, stress-tolerant microcolonial ascomycetes. After their first discovery on desert rock surfaces, these melanized chaetothyrialean and dothidealean ascomycetes have been found on Mediterranean monuments after biocidal treatments, Antarctic rocks and solar panels. New man-made modifications of surfaces (e.g., treatment with biocides or photocatalytically active layers) accommodate the exceptional stress-tolerance of microcolonial fungi and thus further select for this well-protected ecological group. Melanized fungal strains were isolated from a microbial community that developed on highly photocatalytic roof tiles after a long-term environmental exposure in a maritime-influenced region in northwestern Germany. Four of the isolated strains are described here as a novel species, Constantinomyces oldenburgensis, based on multilocus ITS, LSU, RPB2 gene phylogeny. Their closest relative is a still-unnamed rock-inhabiting strain TRN431, here described as C. patonensis. Both species cluster in Capnodiales, among typical melanized microcolonial rock fungi from different stress habitats, including Antarctica. These novel strains flourish in hostile conditions of highly oxidizing material surfaces, and shall be used in reference procedures in material testing

[Tarxetas de visita de Camilo Díaz Baliño] ([19?])

Forma de ingreso: Depósito. Fuente de ingreso: Díaz Pardo, Isaac. Fecha de ingreso: 2011. Propietario: Herdeiros de Isaac Díaz PardoDixitalización Telefónica-IDP 2012Contén 12 tarxetas: Angel Amor Ruibal(con texto)--La abadesa de Santa Clara(con texto)--Francisco Abelaira Ayán--Angel de Acosta Curros(con texto)--Fernando Alsina--Andrés Alonso Cortés--Basilio Amat--Jesús Alvarez Díaz(con texto)--José Blanco Meizoso--Carlos Braga Real--José M. Cabada Vázquez--Constantino Candeira y Pére

Nuclear ribosomal internal transcribed spacer (ITS) region as a universal DNA barcode marker for Fungi

Six DNA regions were evaluated as potential DNA barcodes for Fungi, the second largest kingdom of eukaryotic life, by a multinational, multilaboratory consortium. The region of the mitochondrial cytochrome c oxidase subunit 1 used as the animal barcode was excluded as a potential marker, because it is difficult to amplify in fungi, often includes large introns, and can be insufficiently variable. Three subunits from the nuclear ribosomal RNA cistron were compared together with regions of three representative protein-coding genes (largest subunit of RNA polymerase II, second largest subunit of RNA polymerase II, and minichromosome maintenance protein). Although the protein-coding gene regions often had a higher percent of correct identification compared with ribosomal markers, low PCR amplification and sequencing success eliminated them as candidates for a universal fungal barcode. Among the regions of the ribosomal cistron, the internal transcribed spacer (ITS) region has the highest probability of successful identification for the broadest range of fungi, with the most clearly defined barcode gap between inter- and intraspecific variation. The nuclear ribosomal large subunit, a popular phylogenetic marker in certain groups, had superior species resolution in some taxonomic groups, such as the early diverging lineages and the ascomycete yeasts, but was otherwise slightly inferior to the ITS. The nuclear ribosomal small subunit has poor species-level resolution in fungi. ITS will be formally proposed for adoption as the primary fungal barcode marker to the Consortium for the Barcode of Life, with the possibility that supplementary barcodes may be developed for particular narrowly circumscribed taxonomic groups