CIMO - Posters em Encontros Científicos Internacionais
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- Estudo comparativo da microbiologia do solo em soutos demonstração: contributo para o desenvolvimento de estratégias de adaptação sustentáveisPublication . Diegues, Samuel Filipe da Fonseca; Pereira, Ermelinda; Afonso, Sandra; Patrício, Maria SameiroCompreender como a aptidão dos soutos se altera face às alterações climáticas é de primordial importância com vista ao desenvolvimento de estratégias de adaptação das regiões produtoras de castanha. Assim, o conhecimento das condições específicas do solo e da atividade microbiana do mesmo pode ajudar a identificar as melhores soluções de mitigação, ao nível da gestão do solo, para os agricultores nas zonas mais afetadas pelas condições do clima. A aplicação de uma gestão conservativa da matéria orgânica no solo não só contribui para o aumento da produtividade como para a diminuição dos gases de efeito de estufa. Por este facto, avaliam-se as alterações na biomassa microbiana e na respiração do solo em dois sistemas agroflorestais (soutos) jovens, em situação contrastante. A atividade microbiana do solo foi avaliada com base no carbono da biomassa microbiana (CBM), respiração basal do solo (RBS) e contagem de bactérias e de fungos. As amostras de solo foram recolhidas aleatoriamente em duas épocas do ano de 2018. Os resultados demonstram que nos microrganismos do solo predominam os fungos relativamente às bactérias em ambos os locais. Foi observada alguma diferenciação entre os dois locais em estudo que se pode traduzir em maior ou menor vigor dos soutos e consequentemente melhor ou pior adaptação às alterações climáticas.
- Isolation of filamentous fungi from different food matrices from Angola and MozambiquePublication . Vale-Dias, Teresa; Matusse, Cláudio; Carvalho, Susana; Silva, Beatriz; Soares, Célia; Lucamba, Zelda; Afonso, Sandra; Venâncio, Armando; Rodrigues, PaulaAgriculture remains the main economic activity in most African countries. However, crops are often contaminated with fungi that can cause diseases or produce mycotoxins, which is a major concern to food safety and security. Little is known about the mycotoxigenic fungi contaminating the most relevant staples in Mozambique and Angola. The aim of this work was to isolate and identify fungi from three food commodities – corn, peanuts and beans – and understand if they are a source of mycotoxin exposure to the populations, as these products are fundamental to the local food diet, and important to the economy. Samples of corn from Mozambique, and samples of peanuts and beans from Angola (four samples of each) were analysed for fungal contamination. Samples were also surveyed for aflatoxins using the AgraStrip® Pro WATEX® (Romer) method. Twenty-five grains of each sample were directly plated onto DRBC, and filamentous fungi were isolated after 5 to 7 days of incubation at 25 °C. A total of 56 fungal isolates representing the various fungal morphotypes were molecularly identified by Sanger sequencing of the ITS region. The microbiota of all samples was mainly composed of Aspergillus sp., Fusarium sp. and Penicillium sp., many of them belonging to mycotoxigenic species. Phytopathogenic fungi of four genera – Lasiodiplodia sp., Macrophomina sp., Nigrospora sp. and Pseudocercospora sp. – were also identified. Most species were common to all types of samples. Aflatoxins were detected in all samples.
- MYCOTOX-PALOP - Multi-actor partnership for the risk assessment of mycotoxins along the food chain in African Portuguese-speaking countries (PALOP)Publication . Macuamule, Custódia; Venâncio, Armando; Afonso, Sandra; Rodrigues, PaulaThe health impact of mycotoxin exposure is grossly underreported in Angola (AN) and Mozambique (MZ) due to the lack of coordinated monitoring and medical surveillance, and its control is inadequately addressed. Due to inherent climatic, agricultural and political conditions, these countries are subjected to major food security issues, which could be partially mitigated by increasing the awareness to crop losses due to fungal and mycotoxin contamination. The aims of the project are to: gather knowledge on food and feed fungal losses and mycotoxin contamination in MZ and AN; set mycotoxin risk assessment programmes; and establish intervention strategies to reduce human exposure to mycotoxins and their negative impacts, by means of safe and efficient intervention strategies. Access, training and extension actions at the scientific, technical and community levels will be strongly promoted to build human and technical capacity, bridging the gap between research and the various stakeholders, including farmers, retailers, trading companies, and regulatory agencies. Integrated actions and policies will expectedly be adopted, in a way of contributing to the improvement of the governance policies and programmes. This project finally aims at contributing to long-term benefits for citizens, economy and society, as it meets important Development Goals set by the UN 2030 Agenda for Sustainable Development, in particular Goal 2 “End hunger, achieve food security and improved nutrition, and promote sustainable agriculture”. MYCOTOX-PALOP builds on the scientific, technical and field expertise of a joint task force including CIMO-IPB and CEB-UMinho (Portugal), ISPKS (AN) and UEM (MZ).