7 results on '"Rosani, Umberto"'
Search Results
2. Massive gene presence-absence variation shapes an open pan-genome in the Mediterranean mussel
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Gerdol, Marco, Moreira, Rebeca, Cruz, Fernando, Gómez-Garrido, Jessica, Vlasova, Anna, Rosani, Umberto, Venier, Paola, Naranjo-Ortiz, Miguel A., Murgarella, Maria, Greco, Samuele, Balseiro, Pablo, Corvelo, André, Frias, Leonor, Gut, Marta, Gabaldón, Toni, Pallavicini, Alberto, Canchaya, Carlos, Novoa, Beatriz, Alioto, Tyler S., Posada, David, and Figueras, Antonio more...
- Published
- 2020
- Full Text
- View/download PDF
Catalog
3. Parallel analysis of miRNAs and mRNAs suggests distinct regulatory networks in Crassostrea gigas infected by Ostreid herpesvirus 1
- Author
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Rosani, Umberto, Abbadi, Miriam, Green, Timothy, Bai, Chang-Ming, Turolla, Edoardo, Arcangeli, Giuseppe, Wegner, K. Mathias, and Venier, Paola
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- 2020
- Full Text
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4. A-to-I editing of Malacoherpesviridae RNAs supports the antiviral role of ADAR1 in mollusks
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Rosani, Umberto, Bai, Chang-Ming, Maso, Lorenzo, Shapiro, Maxwell, Abbadi, Miriam, Domeneghetti, Stefania, Wang, Chong-Ming, Cendron, Laura, MacCarthy, Thomas, and Venier, Paola
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- 2019
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5. Massive gene presence-absence variation shapes an open pan-genome in the mediterranean mussel
- Author
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Ministerio de Ciencia, Innovación y Universidades (España), Xunta de Galicia, European Commission, European Research Council, Ministerio de Economía y Competitividad (España), Generalitat de Catalunya, Instituto de Salud Carlos III, Gerdol, Marco, Moreira, Rebeca, Cruz, Fernando, Gómez-Garrido, Jessica, Vlasova, Anna, Rosani, Umberto, Venier, Paola, Naranjo-Ortiz, Miguel A., Murgarella, Maria, Greco, Samuele, Balseiro, P., Corvelo, André, Frías, Leonor, Gut, Marta, Gabaldón, Toni, Pallavicini, Alberto, Canchaya, Carlos, Novoa, Beatriz, Alioto, Tyler S., Posada, David, Figueras Huerta, Antonio, Ministerio de Ciencia, Innovación y Universidades (España), Xunta de Galicia, European Commission, European Research Council, Ministerio de Economía y Competitividad (España), Generalitat de Catalunya, Instituto de Salud Carlos III, Gerdol, Marco, Moreira, Rebeca, Cruz, Fernando, Gómez-Garrido, Jessica, Vlasova, Anna, Rosani, Umberto, Venier, Paola, Naranjo-Ortiz, Miguel A., Murgarella, Maria, Greco, Samuele, Balseiro, P., Corvelo, André, Frías, Leonor, Gut, Marta, Gabaldón, Toni, Pallavicini, Alberto, Canchaya, Carlos, Novoa, Beatriz, Alioto, Tyler S., Posada, David, and Figueras Huerta, Antonio more...
- Abstract
Background: The Mediterranean mussel Mytilus galloprovincialis is an ecologically and economically relevant edible marine bivalve, highly invasive and resilient to biotic and abiotic stressors causing recurrent massive mortalities in other bivalves. Although these traits have been recently linked with the maintenance of a high genetic variation within natural populations, the factors underlying the evolutionary success of this species remain unclear. Results: Here, after the assembly of a 1.28-Gb reference genome and the resequencing of 14 individuals from two independent populations, we reveal a complex pan-genomic architecture in M. galloprovincialis, with a core set of 45,000 genes plus a strikingly high number of dispensable genes (20,000) subject to presence-absence variation, which may be entirely missing in several individuals. We show that dispensable genes are associated with hemizygous genomic regions affected by structural variants, which overall account for nearly 580 Mb of DNA sequence not included in the reference genome assembly. As such, this is the first study to report the widespread occurrence of gene presence-absence variation at a whole-genome scale in the animal kingdom. Conclusions: Dispensable genes usually belong to young and recently expanded gene families enriched in survival functions, which might be the key to explain the resilience and invasiveness of this species. This unique pan-genome architecture is characterized by dispensable genes in accessory genomic regions that exceed by orders of magnitude those observed in other metazoans, including humans, and closely mirror the open pan-genomes found in prokaryotes and in a few nonmetazoan eukaryotes. more...
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- 2020
6. Insights into the innate immunity of the Mediterranean mussel Mytilus galloprovincialis.
- Author
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Venier, Paola, Varotto, Laura, Rosani, Umberto, Millino, Caterina, Celegato, Barbara, Bernante, Filippo, Lanfranchi, Gerolamo, Novoa, Beatriz, Roch, Philippe, Figueras, Antonio, and Pallavicini, Alberto more...
- Subjects
MYTILUS ,GENES ,CELLULAR immunity ,SEAFOOD ,PATHOGENIC microorganisms - Abstract
Background: Sessile bivalves of the genus Mytilus are suspension feeders relatively tolerant to a wide range of environmental changes, used as sentinels in ecotoxicological investigations and marketed worldwide as seafood. Mortality events caused by infective agents and parasites apparently occur less in mussels than in other bivalves but the molecular basis of such evidence is unknown. The arrangement of Mytibase, interactive catalogue of 7,112 transcripts of M. galloprovincialis, offered us the opportunity to look for gene sequences relevant to the host defences, in particular the innate immunity related genes. Results: We have explored and described the Mytibase sequence clusters and singletons having a putative role in recognition, intracellular signalling, and neutralization of potential pathogens in M. galloprovincialis. Automatically assisted searches of protein signatures and manually cured sequence analysis confirmed the molecular diversity of recognition/effector molecules such as the antimicrobial peptides and many carbohydrate binding proteins. Molecular motifs identifying complement C1q, C-type lectins and fibrinogen-like transcripts emerged as the most abundant in the Mytibase collection whereas, conversely, sequence motifs denoting the regulatory cytokine MIF and cytokine-related transcripts represent singular and unexpected findings. Using a cross-search strategy, 1,820 putatively immune-related sequences were selected to design oligonucleotide probes and define a species-specific Immunochip (DNA microarray). The Immunochip performance was tested with hemolymph RNAs from mussels injected with Vibrio splendidus at 3 and 48 hours post-treatment. A total of 143 and 262 differentially expressed genes exemplify the early and late hemocyte response of the Vibrio-challenged mussels, respectively, with AMP trends confirmed by qPCR and clear modulation of interrelated signalling pathways. Conclusions: The Mytibase collection is rich in gene transcripts modulated in response to antigenic stimuli and represents an interesting window for looking at the mussel immunome (transcriptomes mediating the mussel response to non-self or abnormal antigens). On this basis, we have defined a new microarray platform, a mussel Immunochip, as a flexible tool for the experimental validation of immune-candidate sequences, and tested its performance on Vibrio-activated mussel hemocytes. The microarray platform and related expression data can be regarded as a step forward in the study of the adaptive response of the Mytilus species to an evolving microbial world. [ABSTRACT FROM AUTHOR] more...
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- 2011
- Full Text
- View/download PDF
7. Massive gene presence-absence variation shapes an open pan-genome in the mediterranean mussel
- Author
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Jèssica Gómez-Garrido, Maria Murgarella, Toni Gabaldón, Anna Vlasova, Umberto Rosani, Carlos Canchaya, André Corvelo, David Posada, Marco Gerdol, Rebeca Moreira, Paola Venier, Fernando Cruz, Alberto Pallavicini, Tyler Alioto, Pablo Balseiro, Beatriz Novoa, Leonor Frias, Samuele Greco, Antonio Figueras, Miguel A. Naranjo-Ortiz, Marta Gut, Ministerio de Ciencia, Innovación y Universidades (España), Xunta de Galicia, European Commission, European Research Council, Ministerio de Economía y Competitividad (España), Generalitat de Catalunya, Instituto de Salud Carlos III, Ministerio de Ciencia e Innovación (España), Gerdol, Marco, Moreira, Rebeca, Cruz, Fernando, Gómez-Garrido, Jessica, Vlasova, Anna, Rosani, Umberto, Venier, Paola, Naranjo-Ortiz, Miguel A., Murgarella, Maria, Greco, Samuele, Balseiro, Pablo, Corvelo, André, Frias, Leonor, Gut, Marta, Gabaldón, Toni, Pallavicini, Alberto, Canchaya, Carlo, Novoa, Beatriz, Alioto, Tyler S., Posada, David, Figueras, Antonio, and Barcelona Supercomputing Center more...
- Subjects
Male ,Presence-absence variation ,Phylome ,0302 clinical medicine ,Peptide Elongation Factor 1 ,Hemizygosity ,lcsh:QH301-705.5 ,Innate immunity ,0303 health sciences ,Genome ,biology ,Bivalve ,Pan-genome ,Genomics ,Biological Evolution ,Mussel ,Structural variants ,Dispensable gene ,Antimicrobial peptides ,Female ,Mediterranean mussel ,Pore Forming Cytotoxic Proteins ,2412 Inmunología ,lcsh:QH426-470 ,Mediterrània ,DNA sequencing ,03 medical and health sciences ,Genetic variation ,Gene family ,Animals ,Humans ,Gene ,030304 developmental biology ,Mytilus ,Base Sequence ,2409 Genética ,Research ,DNA ,biology.organism_classification ,Human genetics ,Immunity, Innate ,lcsh:Genetics ,Genòmica ,Mytilus galloprovincialis ,lcsh:Biology (General) ,Musclos ,Evolutionary biology ,Structural variant ,Genètica ,030217 neurology & neurosurgery ,Enginyeria química::Química orgànica::Bioquímica [Àrees temàtiques de la UPC] ,Reference genome - Abstract
21 pages, 4 figures, Background: The Mediterranean mussel Mytilus galloprovincialis is an ecologically and economically relevant edible marine bivalve, highly invasive and resilient to biotic and abiotic stressors causing recurrent massive mortalities in other bivalves. Although these traits have been recently linked with the maintenance of a high genetic variation within natural populations, the factors underlying the evolutionary success of this species remain unclear. Results: Here, after the assembly of a 1.28-Gb reference genome and the resequencing of 14 individuals from two independent populations, we reveal a complex pan-genomic architecture in M. galloprovincialis, with a core set of 45,000 genes plus a strikingly high number of dispensable genes (20,000) subject to presence-absence variation, which may be entirely missing in several individuals. We show that dispensable genes are associated with hemizygous genomic regions affected by structural variants, which overall account for nearly 580 Mb of DNA sequence not included in the reference genome assembly. As such, this is the first study to report the widespread occurrence of gene presence-absence variation at a whole-genome scale in the animal kingdom. Conclusions: Dispensable genes usually belong to young and recently expanded gene families enriched in survival functions, which might be the key to explain the resilience and invasiveness of this species. This unique pan-genome architecture is characterized by dispensable genes in accessory genomic regions that exceed by orders of magnitude those observed in other metazoans, including humans, and closely mirror the open pan-genomes found in prokaryotes and in a few nonmetazoan eukaryotes., This work was conducted with the support of the projects AGL2011-14507-E, AGL2015-65705-R, RTI2018-095997-B-I00 (Ministerio de Ciencia, Innovación y Universidades, Spain) and INCITE 10PXIB402096PR, IN607B 2016/12 (Consellería de Economía, Emprego e Industria - GAIN, Xunta de Galicia). Antonio Figueras, Beatriz Novoa, Rebeca Moreira, Alberto Pallavicini, Marco Gerdol, Paola Venier, and Umberto Rosani are supported by the European Union’s Horizon 2020 research and innovation programme under grant agreement no. 678589. David Posada is supported by the European Research Council, the Spanish Ministry of Economy and Competitiveness, and Xunta de Galicia. We acknowledge the support of the Spanish Ministry of Science and Innovation to the EMBL partnership, the Centro de Excelencia Severo Ochoa, the CERCA Programme/Generalitat de Catalunya, the Spanish Ministry of Science and Innovation through the Instituto de Salud Carlos III, the Generalitat de Catalunya through Departament de Salut and Departament d’Empresa i Coneixement, and the Co-financing by the Spanish Ministry of Science and Innovation with funds from the European Regional Development Fund (ERDF) corresponding to the 2014-2020 Smart Growth Operating Program. more...
- Published
- 2020
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