7 documents found, page 1 of 1
O controlo do nemátode das lesões radiculares Pratylenchus penetrans - activida...
Barbosa, Pedro; Faria, Jorge M.S.; Figueiredo, Ana Cristina; Mota, Manuel; Vicente, Cláudia S.L.O nemátode das lesões radiculares, Pratylenchus penetrans, é um dos fitoparasitas mais destrutivo, responsável por perdas a nível mundial num significativo número de plantas hospedeiras. O controlo químico destes organismos baseia-se em fumigantes e não fumigantes, que providenciam uma protecção sistémica. Tais métodos de controlo são dispendiosos e prejudiciais quer para o ambiente quer para os humanos. Os com...
Synergistic Activity of Cymbopogon citratus and Mentha piperita Essential Oils ...
Gonçalves, Diogo; Cavaco, Tomás; Pombo, Ana; Moiteiro, Cristina; Teixeira, Dora Martins; Inácio, Maria L.; Faria, Jorge M.S.The pinewood nematode (PWN) Bursaphelenchus xylophilus is a major threat to pine forests. Research on sustainable pest management strategies is now a priority. Essential oils (EOs) are biodegradable, complex mixtures of volatiles that can show low toxicity to mammals and powerful nematicidal activities depending on their chemical composition. In the present work, the EOs of four plants were screened against the...
Wheat Shoot Al, Fe, Mn and Zn Levels Are Influenced by Arbuscular Mycorrhiza Ex...
Faria, Jorge M.S.; Teixeira, Dora Martins; Pinto, Ana Paula; Barrulas, Pedro; Brito, Isabel; Carvalho, MárioIn the present study, the levels of Al, Fe, Mn and Zn in wheat shoots were quantified by inductively coupled plasma mass spectrometry (ICP-MS). Wheat was grown in an acidic soil with toxic levels of Mn and with intact or disrupted extraradical mycelium (ERM) as the arbuscular mycorrhizal fungi (AMF) inoculum source, resulting from the previous growth of O. compressus. In the presence of an intact ERM, toxic Mn ...
Arbuscular Mycorrhiza Extraradical Mycelium Promotes Si and Mn Subcellular Redi...
Faria, Jorge M.S.; Conceição, Taiana A; Teixeira, Dora Martins; Brito, Isabel; Barrulas, Pedro; Pinto, Ana Paula; Vaz, Margarida; Carvalho, MárioAbstract: Manganese (Mn) and aluminum (Al) toxicities are serious edaphic limitations to crop production in acidic soils. Excess Mn can be countered using a stress-adapted soil microbiota that establish symbiotic relationships with native plants. The arbuscular mycorrhizal fungi (AMF) associated with Lolium rigidum L. develop extraradical mycelia (ERM) that quickly colonize wheat and lead to greater shoot growt...
Fungal Communities of the Pine Wilt Disease Complex: Studying the Interaction o...
Vicente, Cláudia S.L.; Soares, Miguel; Faria, Jorge M.S.; Espada, Margarida; Mota, Manuel; Nóbrega, Filomena; Ramos, Ana Paula; Inácio, Maria L.Considered one of the most devastating plant–parasitic nematodes worldwide, Bursaphelenchus xylophilus (commonly known as pinewood nematode, PWN) is the causal agent of the pine wilt disease in the Eurasian coniferous forests. This migratory parasitic nematode is carried by an insect vector (Monochamus spp.) into the host tree (Pinus species), where it can feed on parenchymal cells and reproduce massively, resu...
Insights into the Role of Fungi in Pine Wilt Disease
Vicente, Cláudia S.L.; Soares, Miguel; Faria, Jorge M.S.; Ramos, Ana Paula; Inácio, Maria L.Pine wilt disease (PWD) is a complex disease that severely affects the biodiversity and economy of Eurasian coniferous forests. Three factors are described as the main elements of the disease: the pinewood nematode (PWN) Bursaphelenchus xylophilus, the insect‐vector Monochamus spp., and the host tree, mainly Pinus spp. Nonetheless, other microbial interactors have also been considered. The study of mycoflora in...
Search for pinewood nematode control using essential oils isolated from Portugu...
Barbosa, Pedro; Faria, Jorge M.S.; Mendes, Marta D.; Dias, L.S.; Barroso, José G.; Pedro, Luís G.; Figueiredo, Ana C.; Mota, ManuelThe pinewood nematode (PWN), Bursaphelenchus xylophilus, is a major worldwide Pinus pathogen and pest, with impact on forest health, natural ecosystem stability and international trade. Essential oils (EOs) may be an alternative to the current control options. Seventy three EOs from 46 species from the Portuguese aromatic flora were screened for in vitro nematicidal activity against PWN. The suitability of Trit...