Phenotype responses to abiotic stresses, asexual reproduction and virulence among isolates of the entomopathogenic fungus Cordyceps javanica (Hypocreales: Cordycipitaceae)

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dc.creatorMascarin, Gabriel Moura
dc.creatorPereira Junior, Ronaldo Alves
dc.creatorFernandes, Éverton Kort Kamp
dc.creatorQuintela, Eliane Dias
dc.creatorDunlap, Christopher A.
dc.creatorArthurs, Steven Paul
dc.date.accessioned2025-01-08T11:39:39Z
dc.date.available2025-01-08T11:39:39Z
dc.date.issued2018
dc.description.abstractSelecting entomopathogenic fungal isolates with resilience to environmental stresses, optimal mass production characteristics, and with high virulence to target pests favors the development of mycopesticides. A case in point, Cordyceps (= Isaria) javanica has been extensively investigated for non-chemical control of whiteflies worldwide. We phylogenetically characterized 11 native C. javanica isolates from Northeastern and Central Brazil. These isolates were screened for tolerance to heat-shock, UV-B radiation, osmotic and oxidative stresses, as well as conidial production on cereal grain and insecticidal activity against the whitefly Bemisia tabaci (MEAM 1) in the laboratory. All isolates were pathogenic to whiteflies and significant (3-fold) differences in median lethal con centration were observed among isolates. Furthermore, pronounced differences among isolates were found for stress factors and conidial production. Using principal component analysis, our results highlighted three major clusters formed by isolates (i) resistant to osmotic and oxidative stress, (ii) resilient to UV-B, and (iii) with high virulence, conidial production and heat tolerance. Overall, isolate CG1228 performed best based on multi-stress resistance, mass production and virulence attributes in the laboratory. This study highlights the importance of exploring natural variation in entomopathogenic fungi for selection of appropriate isolates for effective bio control of insect pests coupled with mass production characteristics and abiotic stress tolerances.
dc.identifier.citationMASCARIN, Gabriel Moura et al. Phenotype responses to abiotic stresses, asexual reproduction and virulence among isolates of the entomopathogenic fungus Cordyceps javanica (Hypocreales: Cordycipitaceae). Microbiological Research, v. 216, p. 12-22, 2018. DOI: 10.1016/j.micres.2018.08.002. Disponível em: https://www.sciencedirect.com/science/article/pii/S0944501318306815?via%3Dihub. Acesso em: 12 dez. 2024.
dc.identifier.doi10.1016/j.micres.2018.08.002
dc.identifier.issn0944-5013
dc.identifier.issne- 1618-0623
dc.identifier.urihttp://repositorio.bc.ufg.br//handle/ri/26175
dc.language.isoeng
dc.publisher.countryHolanda
dc.publisher.departmentInstituto de Patologia Tropical e Saúde Pública - IPTSP (RMG)
dc.rightsAcesso Aberto
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectBiological control
dc.subjectUV-B tolerance
dc.subjectHeat-Shock
dc.subjectOxidative stress
dc.subjectOsmotic stress
dc.subjectPrincipal component analysis
dc.titlePhenotype responses to abiotic stresses, asexual reproduction and virulence among isolates of the entomopathogenic fungus Cordyceps javanica (Hypocreales: Cordycipitaceae)
dc.typeArtigo

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