Data/hora: 20/06/2024 20:02:29

Biblioteca(s): | Embrapa Arroz e Feijão; Embrapa Meio Ambiente.
Data corrente: | 31/07/2018
Data da última atualização: | 31/07/2018
Autoria: | SILVA, J. do N.; MASCARIN, G. M.; GOMES, I. C. do S.; TINOCO, R. S.; QUINTELA, E. D.; CASTILHO, L. dos R.; FREIRE, D. M. G.
Afiliação: | JAQUELINE DO NASCIMENTO SILVA, UFRJ; GABRIEL MOURA MASCARIN, CNPMA; ISABEK CRISTINA DOS SANTOS GOMES, UFRJ; RICARDO SALLES TINOCO, Agropalma; ELIANE DIAS QUINTELA, CNPAF; LEDA DOS REIS CASTILHO, UFRJ; DENISE MARIA GUIMARAES FREIRE, UFRJ.
Título: | New cost-effective bioconversion process of palm kernel cake into bioinsecticides based on Beauveria bassiana and Isaria javanica.
Ano de publicação: | 2018
Fonte/Imprenta: | Applied Microbiology and Biotechnology, v. 102, n. 6, p. 2595-2606, 2018.
DOI: | https://doi.org/10.1007/s00253-018-8805-z
Idioma: | Inglês
Conteúdo: | Abstract: The present study aimed to add value to palm oil by-products as substrates to efficiently produce conidia of Beauveria bassiana and Isaria javanica (Hypocreales: Cordycipitaceae) for biological control of the whitefly Bemisia tabaci (Hemiptera: Aleyrodidae), through a solid-state fermentation process using palm kernel cake and palm fiber as nutrient source and solid matrix, respectively. The optimum culture conditions yielded high concentrations of viable conidia after air-drying, when the fungi were grown on palm kernel cake (B. bassiana 7.65?×?109 and I. javanica 2.91?×?109 conidia g?1 dry substrate) after 6 days under optimal growth conditions set to 60% substrate moisture and 32 °C. Both fungal strains exhibited high efficacy against third-instar whitefly nymphs, inducing mortality up to 62.9 and 56.6% by B. bassiana and I. javanica, respectively, assessed after 9 days post-application in a screenhouse. Furthermore, we noted that insect mortality was strongly correlated with high atmospheric moisture, while B. bassiana appeared to require shorter accumulative hours under high moisture to kill whitefly nymphs compared to I. javanica. Our results underpin a feasible and cost-effective mass production method for aerial conidia, using palm kernel as the main substrate in order to produce efficacious fungal bioinsecticides against an invasive whitefly species in Brazil. Finally, our fermentation process may offer a sustainable and cost-effective means to produce eco-friendly mycoinsecticides, using an abundant agro-industrial by-product from Brazil that will ultimately assist in the integrated management of agricultural insect pests.
Palavras-Chave: | Agro-industrial by-products; Torta de dende.
Thesagro: | Beauveria Bassiana; Bemisia Tabaci; Controle Biológico.
Thesaurus Nal: | Agricultural industry; Biological control; Byproducts; Cordycipitaceae; Entomopathogenic fungi; Palm kernel cake; Solid state fermentation.

Categoria do assunto:

H Saúde e Patologia
O Insetos e Entomologia

Registro original: | Embrapa Meio Ambiente (CNPMA)

Exemplares:

CNPMA - (16151-1) - UPC - AP - DD -  -  -  - DIS
CNPAF - (35234-1) - UPC - AP - DD - 2018 -  - 2018 - DIS