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https://www.arca.fiocruz.br/handle/icict/39258
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Embargo date
2022-01-01
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- IOC - Artigos de Periódicos [12494]
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STUDY ON MORPHOLOGY, PATHOGENICITY, AND GENETIC VARIABILITY OF BEAUVERIA BASSIANA ISOLATES OBTAINED FROM BOOPHILUS MICROPLUS TICK
Morfologia
Patogenicidade
Variabilidade genética
Boophilus microplus
Carrapatos
Author
Affilliation
Universidade Federal Rural do Rio de Janeiro. Instituto Veterinário. Departamento de Parasitologia Animal. Seropédica, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Micologia. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Micologia. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Bioquímica e Biologia Molecular. Rio de Janeiro, RJ, Brasil.
Universidade Federal Rural do Rio de Janeiro. Instituto Veterinário. Departamento de Parasitologia Animal. Seropédica, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Micologia. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Micologia. Rio de Janeiro, RJ, Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Bioquímica e Biologia Molecular. Rio de Janeiro, RJ, Brasil.
Universidade Federal Rural do Rio de Janeiro. Instituto Veterinário. Departamento de Parasitologia Animal. Seropédica, RJ, Brasil.
Abstract
Fifty isolates of Beauveria bassiana (Balsamo) Vuillemin, 1912 (Ascomycota: Clavicipitaceae) were analyzed by morphology, for their pathogenic potential to Boophilus microplus (Canestrini, 1887) (Acari: Ixodidae) larvae, and by Random Amplified Polymorphic DNA-Polymerase Chain Reaction technique. Morphological analysis demonstrated that isolates present characteristics compatible to those described for B. bassiana in the literature. Virulence test demonstrated that all isolates present lethal effect on larvae and that the lethal concentration varies among isolates. The most virulent isolate was the only one obtained from human infection, which was also the only isolate presenting synnemata. The study on genetic variability among the isolates allowed the identification of 23 electrophoretic profiles. The established groupings suggest that most of the isolates obtained from B. microplus of the same locality present low genetic variation. In this way, the data in the present study will contribute to a meticulous characterization of these B. bassiana isolates.
Keywords in Portuguese
Beauveria bassianaMorfologia
Patogenicidade
Variabilidade genética
Boophilus microplus
Carrapatos
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