Data/hora: 07/06/2024 14:56:46

Biblioteca(s): | Embrapa Meio Ambiente.
Data corrente: | 29/07/2020
Data da última atualização: | 03/10/2020
Autoria: | BERNARDO, C. das C.; PEREIRA JUNIOR, R. A.; LUZ, C.; MASCARIN, G. M.; FERNANDES, E. K. K.
Afiliação: | CÍNTIA DAS CHAGAS BERNARDO, UFG; RONALDO ALVES PERERIA JUNIOR, UFG; CHRISTIAN LUZ, UFG; GABRIEL MOURA MASCARIN, CNPMA; ÉVERTON KORT KAMP FERNANDES, UFG.
Título: | Differential susceptibility of blastospores and aerial conidia of entomopathogenic fungi to heat and UV-B stresses.
Ano de publicação: | 2020
Fonte/Imprenta: | Fungal Biology, v. 124, n. 8, p. 714-722, 2020.
DOI: | https://doi.org/10.1016/j.funbio.2020.04.003
Idioma: | Inglês
Conteúdo: | Abstract: We investigated the comparative susceptibility to heat and UV-B radiation of blastospores and aerial conidia of Metarhizium spp. (Metarhizium robertsii IP 146, Metarhizium anisopliae s.l. IP 363 and Metarhizium acridum ARSEF 324) and Beauveria bassiana s.l. (IP 361 and CG 307). Conidia and blastospores were produced in solid or liquid Adámek-modified medium, respectively, and then exposed to heat (45 ± 0.2 °C) in a range of 0 (control) to 360 min; the susceptibility of fungal propagules to heat exposures was assessed to express relative viability. Similarly, both propagules of each isolate were also exposed to a range of 0 (control) to 8.1 kJ m?2 under artificial UV-B radiation. Our results showed that fungal isolates, propagule types and exposure time or dose of the stressor source play critical roles in fungal survival challenged with UV-B and heat. Conidia of ARSEF 324, IP 363, IP 146 and IP 361 exposed to heat survived significantly longer than their blastospores, except for blastospores of CG 307. Conidia and blastospores of IP 146 and IP 363 were equally tolerant to UV-B radiation. We claim that blastospores of certain isolates may be promising candidates to control arthropod pests in regions where heat and UV-B are limiting environmental factors.
Palavras-Chave: | Fungal propagule; Thermotolerance; UV tolerance.
Thesagro: | Calor; Controle Biológico; Fungo Para Controle Biológico; Raio Ultravioleta; Resistência a Temperatura.
Thesaurus Nal: | Abiotic stress; Beauveria; Biological control agents; Entomopathogenic fungi; Heat tolerance; Metarhizium; Ultraviolet radiation.
Categoria do assunto: | H Saúde e Patologia
Registro original: | Embrapa Meio Ambiente (CNPMA)
Exemplares: | CNPMA - (16787-1) - UPC - AP - DD -  -  -  - DIS