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Poder antioxidante dos pequenos frutos e seus efeitos benéficos para a saúde hu...
Santos, Cláudia N.; Tavares, Lucélia; Pontes, Vera; Oliveira, Pedro; Ferreira, Ricardo BoavidaThe fruits as well as other organs of plants in its constitution have various phytochemicals, including polyphenols, the antioxidant molecules highly abundant in foods. Despite its ubiquity, its benefits to human health only start to be evaluated in 90’s, and it continues to reveal a growing interest, mainly due to epidemiological studies suggesting a link between the consumption of food and beverages rich in p...
Phaemoniella chlamydospora infection induces changes in phenolic compounds cont...
Oliveira, Helena; Martin, Nico; Vesentini, Damiano; Rego, Cecilia; Monteiro, Sara; Ferreira, Ricardo BoavidaThe effect of Phaeomoniella chlamydospora infection was evaluated in three grapevine cultivars, in relation to the variation in phenolic compounds within the host. Young plants of Vitis vinifera (cv. Chardonnay, Touriga Nacional and two clones of cv. Aragonez) were infected using two strains of Pa. chlamydospora and were harvested after fi ve months from inoculation. Overall, a localised increment in the amount...
Interactions among grapevine disease-causing fungi. The role of reactive oxygen...
Oliveira, Helena; Freitas, Regina; Rego, Cecilia; Ferreira, Ricardo BoavidaBotryosphaeria parva, Eutypa lata and Phomopsis viticola are ascomyceteous fungi responsible for severe canker and dieback in numerous woody plants. In grapevine, these pathogens colonise the wood mainly through pruning wounds, and the diseases gradually develop, leading to partial or total vine death. In the present study, the three fungal species were grown in Czapek Dox modifi ed medium. Under these conditio...
Contribution of Yap 1 towards S. cervisiae adaptation to arsenic mediated oxida...
Menezes, Regina A.; Amaral, Catarina; Batista-Nascimento, Liliana; Santos, Cláudia; Ferreira, Ricardo Boavida; Devaux, Fréderic; Eleutherio, Elis C.A.Post-Print ; In the budding yeast Saccharomyces cerevisiae arsenic detoxification involves the activation Yap8, a member of the Yap family of transcription factors, which in turn regulates ACR2 and ACR3, encoding an arsenate reductase and a plasma membrane arsenite efflux-protein, respectively. In addition, Yap1 is involved in the arsenic adaptation process through regulating the expression of the vacuolar-pum...
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