Data/hora: 23/06/2024 17:22:31

Biblioteca(s): | Embrapa Meio Ambiente.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | B - 1
Data corrente: | 19/08/2021
Data da última atualização: | 10/06/2022
Autoria: | CATÃO, A. M. L.; RODRIGUES, J.; MARRETO, R. N.; MASCARIN, G. M.; FERNANDES, E. K. K.; HUMBER, R. A.; LUZ, C.
Afiliação: | ALAINE MARIA LOPES CATÃO, UFG; JUSCELINO RODRIGUES, UFG; RICARDO NEVES MARRETO, UFG; GABRIEL MOURA MASCARIN, CNPMA; ÉVERTON KORT KAMP FERNANDES, UFG; RICHARD ALAN HUMBER, USDA-ARS; CHRISTIAN LUZ, UFG.
Título: | Optimization of granular formulations of Metarhizium humberi microsclerotia with humectants.
Ano de publicação: | 2021
Fonte/Imprenta: | Journal of Basic Microbiology, v. 61, n. 9, p. 808-813, 2021.
ISSN: | 0233-111X
DOI: | https://doi.org/10.1002/jobm.202100171
Idioma: | Inglês
Conteúdo: | Abstract: Granular microsclerotial formulations of entomopathogenic fungi deserve attention because of their post-application, in situ production of new conidia that enhance and prolong mycoinsecticidal efficacy against a target pest insect. Because high ambient moisture is a crucial condition to induce fungal development and conidiogenesis on granules, we tested the impacts of the additions of three humectants - glycerin, propylene glycol, and polyethylene glycol 400 - on water absorption by pellets incorporating microsclerotia of Metarhizium humberi IP 46 with microcrystalline cellulose or vermiculite carriers, and on the production of infective conidia of IP 46 microsclerotia in ambient humidities suboptimal for routine conidiogenesis. Glycerin facilitated greater and faster absorption of water than the other humectants. Microcrystalline cellulose absorbed low quantities of water without any added humectant whereas vermiculite did not. IP 46 did not grow or sporulate on pellets prepared with or without glycerin at 86% relative humidity (RH) or on control pellets without glycerin at 91% RH; conidial production on pellets prepared with vermiculite or microcrystalline cellulose and 10% glycerin reached 1.1 x 10(5) conidia/mg and 1 x 10(5) conidia/mg, respectively, after 20 days of exposure at 91% RH. Hence, these results strongly support glycerin as a suitable humectant for granular microsclerotial formulations of this fungus.
Palavras-Chave: | Conidiogenesis; Glycerin; Humidity stress.
Thesagro: | Fungo Entomógeno; Glicerina; Pellet; Teor de Umidade.
Thesaurus Nal: | Entomopathogenic fungi; Humidity; Pellets.
Categoria do assunto: | H Saúde e Patologia
Registro original: | Embrapa Meio Ambiente (CNPMA)
Exemplares: | CNPMA - (17012-1) - UPC - AP - DD -  -  -  - DIS