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Hidden Secrets of Mangrove Swamp Rice Stored Seeds in Guinea-Bissau: Assessment of Fungal Communities and Implications for Food Security
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Orientador(es)
Resumo(s)
Rice cultivation is one of the most important agro-economic activities in many countries,
and the correct seed storage between production cycles is essential for crop success. In Guinea-
Bissau, mangrove swamp rice (MSR) is a highly productive rice cropping system, thus providing
surplus for sale. Depending on storage conditions, rice grains may present moisture, insects, or
the development of fungi that might affect crop productivity. Considering different rice varieties
and storage conditions, samples were collected from 30 farmers within 13 villages across the main
MSR-producing regions. Stored rice was used to isolate and identify seed-borne fungi through DNA
barcoding, to test aflatoxin content, and to evaluate seed germination rates. Polyethylene bags (the
container), raised wooden platforms, and storage rooms (the structures) are the most used facilities.
Hermetic containers were recorded mainly in Oio. A total fungal richness of 18 genera was found, and
16 different species were identified. The most represented fungal genera are Aspergillus, Curvularia,
and Bipolaris. Despite the presence of aflatoxin-producing fungal samples, they did not present
concerning levels for human consumption, and the germination rate was not affected regardless of
storage structures. These results provide a baseline on fungi occurrence in stored MSR seeds from
traditional facilities in Guinea-Bissau.
Descrição
Palavras-chave
storage structures West Africa seed-borne fungi Oryza sativa Oryza glaberrima DNA barcoding
Contexto Educativo
Citação
Conde, S.; Barai, A.; Catarino, S.; Costa, G.J.; Ferreira, S.; Tavares, I.; Ferreira, M.R.; Temudo, M.P.; Monteiro, F. Hidden Secrets of Mangrove Swamp Rice Stored Seeds in Guinea-Bissau: Assessment of Fungal Communities and Implications for Food Security. Agronomy 2024, 14, 1870. https://doi.org/10.3390/agronomy14081870
Editora
MDPI