8 documents found, page 1 of 1
An improved reference genome and first organelle genomes of Quercus suber
Usié, Ana; Serra, Octávio; Barros, Pedro M.; Barbosa, Pedro; Leão, Célia; Capote, Tiago; Almeida, Tânia; Rodrigues, Leandra; Carrasquinho, IsabelCork oak (Quercus suber L.) is an ecologically and economically important evergreen tree species native to the Mediterranean region and widespread in southwest Europe and northwest Africa. An improved genome assembly of cork oak using a combination of Illumina and PacBio sequencing is presented in this study. The assembled genome contains 2351 scaffolds longer than 1000 bp, accounting for 765.7 Mbp of genome si...
Potencial alérgico do superalimento bagas goji
Teixeira, Sandrina; Luís, Inês M.; Oliveira, M. Margarida; Abreu, Isabel A.; Batista, RitaA classificação das bagas goji como superalimento, devido essencialmente à sua composição em compostos bioativos, levou a um enorme aumento do seu consumo nos países ocidentais. Apesar de todos os seus benefícios, as bagas goji comportam alguns riscos, nomeadamente o de alergia. Neste estudo pretendemos caracterizar as proteínas (proteoma) das bagas goji (Lycium barbarum) e identificar aquelas envolvidas na rea...
Dps from Deinococcus radiodurans : oligomeric forms of Dps1 with distinct cellu...
Santos, Sandra P.; Mitchell, Edward P.; Franquelim, Henri G.; Castanho, Miguel A. R. B.; Abreu, Isabel A.; Romão, Célia V.The DNA binding proteins from starved cells from Deinococcus radiodurans, Dps1-DR2263 and Dps2-DRB0092, have a common overall structure of hollow spherical dodecamers. Their involvement in the homeostasis of intracellular metal and DNA protection was addressed. Our results show that DrDps proteins are able to oxidize ferrous to ferric iron by oxygen or hydrogen peroxide. The iron stored inside the hollow sphere...
A comprehensive assessment of the transcriptome of cork oak (Quercus suber) thr...
Pereira-Leal, Jose B.; Abreu, Isabel A.; Alabca, Claudia S.; Almeida, Maria Helena; Almeida, Paulo; Almeida, Tania; Amorim, Maria Isabel; Araujo, SusanaBackground: 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 inform...
A comprehensive assessment of the transcriptome of cork oak (Quercus suber) thr...
Pereira-Leal, José B.; Abreu, Isabel A.; Alabaça, Cláudia S.; Almeida, Maria H.; Almeida, Paulo; Almeida, Tânia; Amorim, Maria I.; Araújo, SusanaBackground: 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 inform...
Coping with abiotic stress: Proteome changes for crop improvement
Abreu, Isabel A.; Farinha, Ana Paula; Negrão, Sónia; Gonçalves, Nuno; Fonseca, Cátia; Rodrigues, Mafalda; Batista, Rita; Saibo, NelsonPlant breeders need new and more precise tools to accelerate breeding programs that address the increasing needs for food, feed, energy and raw materials, while facing a changing environment in which high salinity and drought have major impacts on crop losses worldwide. This review covers the achievements and bottlenecks in the identification and validation of proteins with relevance in abiotic stress tolerance...
New allelic variants found in key rice salt-tolerance genes an association study
Negrao, Sonia; Almadanim, Maria Cecilia; Pires, Inês S.; Abreu, Isabel A.; Maroco, João Paulo; COURTOIS, Brigitte; Gregorio, Glenn B.; McNally, KennethSalt stress is a complex physiological trait affecting plants by limiting growth and productivity. Rice, one of the most important food crops, is rated as salt-sensitive. High-throughput screening methods are required to exploit novel sources of genetic variation in rice and further improve salinity tolerance in breeding programmes. To search for genotypic differences related to salt stress, we genotyped 392 ri...
OsRMC, a negative regulator of salt stress response in rice, is regulated by tw...
Serra, Tânia S.; Figueiredo, Duarte D.; Cordeiro, André M.; Almeida, Diego M.; Lourenço, Tiago; Abreu, Isabel A.; Sebastián, Alvaro; Fernandes, LiseteHigh salinity causes remarkable losses in rice productivity worldwide mainly because it inhibits growth and reduces grain yield. To cope with environmental changes, plants evolved several adaptive mechanisms, which involve the regulation of many stress-responsive genes. Among these, we have chosen OsRMC to study its transcriptional regulation in rice seedlings subjected to high salinity. Its transcription was h...