<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Pereira-Leal, José B</style></author><author><style face="normal" font="default" size="100%">Abreu, Isabel a</style></author><author><style face="normal" font="default" size="100%">Alabaça, Cláudia S</style></author><author><style face="normal" font="default" size="100%">Almeida, Maria Helena</style></author><author><style face="normal" font="default" size="100%">Almeida, Paulo</style></author><author><style face="normal" font="default" size="100%">Almeida, Tânia</style></author><author><style face="normal" font="default" size="100%">Amorim, Maria Isabel</style></author><author><style face="normal" font="default" size="100%">Araújo, Susana</style></author><author><style face="normal" font="default" size="100%">Azevedo, Herlânder</style></author><author><style face="normal" font="default" size="100%">Badia, Aleix</style></author><author><style face="normal" font="default" size="100%">Batista, Dora</style></author><author><style face="normal" font="default" size="100%">Bohn, Andreas</style></author><author><style face="normal" font="default" size="100%">Capote, Tiago</style></author><author><style face="normal" font="default" size="100%">Carrasquinho, Isabel</style></author><author><style face="normal" font="default" size="100%">Chaves, Inês</style></author><author><style face="normal" font="default" size="100%">Coelho, Ana Cristina</style></author><author><style face="normal" font="default" size="100%">Costa, Maria Manuela Ribeiro</style></author><author><style face="normal" font="default" size="100%">Costa, Rita</style></author><author><style face="normal" font="default" size="100%">Cravador, Alfredo</style></author><author><style face="normal" font="default" size="100%">Egas, Conceição</style></author><author><style face="normal" font="default" size="100%">Faro, Carlos</style></author><author><style face="normal" font="default" size="100%">Fortes, Ana M</style></author><author><style face="normal" font="default" size="100%">Fortunato, Ana S</style></author><author><style face="normal" font="default" size="100%">Gaspar, Maria João</style></author><author><style face="normal" font="default" size="100%">Gonçalves, Sónia</style></author><author><style face="normal" font="default" size="100%">Graça, José</style></author><author><style face="normal" font="default" size="100%">Horta, Marília</style></author><author><style face="normal" font="default" size="100%">Inácio, Vera</style></author><author><style face="normal" font="default" size="100%">Leitão, José M</style></author><author><style face="normal" font="default" size="100%">Lino-Neto, Teresa</style></author><author><style face="normal" font="default" size="100%">Marum, Liliana</style></author><author><style face="normal" font="default" size="100%">Matos, José</style></author><author><style face="normal" font="default" size="100%">Mendonça, Diogo</style></author><author><style face="normal" font="default" size="100%">Miguel, Andreia</style></author><author><style face="normal" font="default" size="100%">Miguel, Célia M</style></author><author><style face="normal" font="default" size="100%">Morais-Cecílio, Leonor</style></author><author><style face="normal" font="default" size="100%">Neves, Isabel</style></author><author><style face="normal" font="default" size="100%">Nóbrega, Filomena</style></author><author><style face="normal" font="default" size="100%">Oliveira, Maria Margarida</style></author><author><style face="normal" font="default" size="100%">Oliveira, Rute</style></author><author><style face="normal" font="default" size="100%">Pais, Maria Salomé</style></author><author><style face="normal" font="default" size="100%">Paiva, Jorge a</style></author><author><style face="normal" font="default" size="100%">Paulo, Octávio S</style></author><author><style face="normal" font="default" size="100%">Pinheiro, Miguel</style></author><author><style face="normal" font="default" size="100%">Raimundo, João Ap</style></author><author><style face="normal" font="default" size="100%">Ramalho, José C</style></author><author><style face="normal" font="default" size="100%">Ribeiro, Ana I</style></author><author><style face="normal" font="default" size="100%">Ribeiro, Teresa</style></author><author><style face="normal" font="default" size="100%">Rocheta, Margarida</style></author><author><style face="normal" font="default" size="100%">Rodrigues, Ana Isabel</style></author><author><style face="normal" font="default" size="100%">Rodrigues, José C</style></author><author><style face="normal" font="default" size="100%">Saibo, Nelson Jm</style></author><author><style face="normal" font="default" size="100%">Santo, Tatiana E</style></author><author><style face="normal" font="default" size="100%">Santos, Ana Margarida</style></author><author><style face="normal" font="default" size="100%">Sá-Pereira, Paula</style></author><author><style face="normal" font="default" size="100%">Sebastiana, Mónica</style></author><author><style face="normal" font="default" size="100%">Simões, Fernanda</style></author><author><style face="normal" font="default" size="100%">Sobral, Rómulo S</style></author><author><style face="normal" font="default" size="100%">Tavares, Rui</style></author><author><style face="normal" font="default" size="100%">Teixeira, Rita</style></author><author><style face="normal" font="default" size="100%">Varela, Carolina</style></author><author><style face="normal" font="default" size="100%">Veloso, Maria Manuela</style></author><author><style face="normal" font="default" size="100%">Ricardo, Cândido Pp</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A comprehensive assessment of the transcriptome of cork oak (Quercus suber) through EST sequencing.</style></title><secondary-title><style face="normal" font="default" size="100%">BMC genomics</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Cork oak</style></keyword><keyword><style  face="normal" font="default" size="100%">EST sequencing</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus suber</style></keyword><keyword><style  face="normal" font="default" size="100%">transcriptome</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2014</style></year></dates><volume><style face="normal" font="default" size="100%">15</style></volume><pages><style face="normal" font="default" size="100%">371</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">BACKGROUND: Cork oak (Quercus suber) is one of the rare trees with the ability to produce cork, a material widely used to make wine bottle stoppers, flooring and insulation materials, among many other uses. The molecular mechanisms of cork formation are still poorly understood, in great part due to the difficulty in studying a species with a long life-cycle and for which there is scarce molecular/genomic information. Cork oak forests are of great ecological importance and represent a major economic and social resource in Southern Europe and Northern Africa. However, global warming is threatening the cork oak forests by imposing thermal, hydric and many types of novel biotic stresses. Despite the economic and social value of the Q. suber species, few genomic resources have been developed, useful for biotechnological applications and improved forest management. RESULTS: We generated in excess of 7 million sequence reads, by pyrosequencing 21 normalized cDNA libraries derived from multiple Q. suber tissues and organs, developmental stages and physiological conditions. We deployed a stringent sequence processing and assembly pipeline that resulted in the identification of ~159,000 unigenes. These were annotated according to their similarity to known plant genes, to known Interpro domains, GO classes and E.C. numbers. The phylogenetic extent of this ESTs set was investigated, and we found that cork oak revealed a significant new gene space that is not covered by other model species or EST sequencing projects. The raw data, as well as the full annotated assembly, are now available to the community in a dedicated web portal at http://www.corkoakdb.org. CONCLUSIONS: This genomic resource represents the first trancriptome study in a cork producing species. It can be explored to develop new tools and approaches to understand stress responses and developmental processes in forest trees, as well as the molecular cascades underlying cork differentiation and disease response.</style></abstract><accession-num><style face="normal" font="default" size="100%">24885229</style></accession-num><notes><style face="normal" font="default" size="100%">APS</style></notes><research-notes><style face="normal" font="default" size="100%">APS</style></research-notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Inácio, Vera</style></author><author><style face="normal" font="default" size="100%">Rocheta, Margarida</style></author><author><style face="normal" font="default" size="100%">Morais-Cecílio, Leonor</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Molecular Organization of the 25S-18S rDNA IGS of Fagus sylvatica and Quercus suber: A Comparative Analysis.</style></title><secondary-title><style face="normal" font="default" size="100%">PloS one</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">chromosomal loci</style></keyword><keyword><style  face="normal" font="default" size="100%">Fagaceae</style></keyword><keyword><style  face="normal" font="default" size="100%">Fagus sylvatica</style></keyword><keyword><style  face="normal" font="default" size="100%">intergenic spacer</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus suber</style></keyword><keyword><style  face="normal" font="default" size="100%">ribosomal DNA</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2014</style></year></dates><volume><style face="normal" font="default" size="100%">9</style></volume><pages><style face="normal" font="default" size="100%">e98678</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The 35S ribosomal DNA (rDNA) units, repeated in tandem at one or more chromosomal loci, are separated by an intergenic spacer (IGS) containing functional elements involved in the regulation of transcription of downstream rRNA genes. In the present work, we have compared the IGS molecular organizations in two divergent species of Fagaceae, Fagus sylvatica and Quercus suber, aiming to comprehend the evolution of the IGS sequences within the family. Self- and cross-hybridization FISH was done on representative species of the Fagaceae. The IGS length variability and the methylation level of 18 and 25S rRNA genes were assessed in representatives of three genera of this family: Fagus, Quercus and Castanea. The intergenic spacers in Beech and Cork Oak showed similar overall organizations comprising putative functional elements needed for rRNA gene activity and containing a non-transcribed spacer (NTS), a promoter region, and a 5'-external transcribed spacer. In the NTS: the sub-repeats structure in Beech is more organized than in Cork Oak, sharing some short motifs which results in the lowest sequence similarity of the entire IGS; the AT-rich region differed in both spacers by a GC-rich block inserted in Cork Oak. The 5'-ETS is the region with the higher similarity, having nonetheless different lengths. FISH with the NTS-5'-ETS revealed fainter signals in cross-hybridization in agreement with the divergence between genera. The diversity of IGS lengths revealed variants from ∼2 kb in Fagus, and Quercus up to 5.3 kb in Castanea, and a lack of correlation between the number of variants and the number of rDNA loci in several species. Methylation of 25S Bam HI site was confirmed in all species and detected for the first time in the 18S of Q. suber and Q. faginea. These results provide important clues for the evolutionary trends of the rDNA 25S-18S IGS in the Fagaceae family.</style></abstract><accession-num><style face="normal" font="default" size="100%">24893289</style></accession-num><notes><style face="normal" font="default" size="100%">APS</style></notes><research-notes><style face="normal" font="default" size="100%">APS</style></research-notes></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Rocheta, Margarida</style></author><author><style face="normal" font="default" size="100%">Carvalho, Luísa</style></author><author><style face="normal" font="default" size="100%">Viegas, Wanda</style></author><author><style face="normal" font="default" size="100%">Morais-Cecílio, Leonor</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Corky, a gypsy-like retrotransposon is differentially transcribed in Quercus suber tissues.</style></title><secondary-title><style face="normal" font="default" size="100%">BMC research notes</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">corky</style></keyword><keyword><style  face="normal" font="default" size="100%">expression</style></keyword><keyword><style  face="normal" font="default" size="100%">ltr retroelement</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus suber</style></keyword><keyword><style  face="normal" font="default" size="100%">rt-qpcr</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2012</style></year></dates><volume><style face="normal" font="default" size="100%">5</style></volume><pages><style face="normal" font="default" size="100%">432</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Background: Transposable elements (TEs) make up a large part of eukaryotic genomes. Due to their repetitive nature and to the fact that they harbour regulatory signals, TEs can be responsible for chromosomal rearrangements, movement of gene sequences and evolution of gene regulation and function. Retrotransposon ubiquity raises the question about their function in genomes and most are transcriptionally inactive due to rearrangements that compromise their activity. However, the activity of TEs is currently considered to have been one of the major processes in genome evolution. Findings: We report on the characterization of a transcriptionally active gypsy-like retrotransposon (named Corky) from Quercus suber, in a comparative and quantitative study of expression levels in different tissues and distinct developmental stages through RT-qPCR. We observed Corky’s differential transcription levels in all the tissues analysed. Conclusions: These results document that Corky’s transcription levels are not constant. Nevertheless, they depend upon the developmental stage, the tissue analysed and the potential occurring events during an individuals’ life span. This modulation brought upon by different developmental and environmental influences suggests an involvement of Corky in stress response and during development.</style></abstract><accession-num><style face="normal" font="default" size="100%">22888907</style></accession-num></record></records></xml>