Molecular characterization of Bacillus thuringiensis strains to control Spodoptera eridania (Cramer) (Lepidoptera: Noctuidae) population

Molecular characterization of Bacillus thuringiensis strains to control Spodoptera eridania (Cramer) (Lepidoptera: Noctuidae) population

Abstract The main objective of this study was to characterize the toxicity and genetic divergence of 18 Bacillus thuringiensis strains in the biological control of Spodoptera eridania. Bacterial suspensions were added to the S. eridania diet. Half of the selected B. thuringiensis strains caused high mortality seven days after infection. The genetic divergence of B. thuringiensis strains was assessed based on Enterobacterial Repetitive Intergenic Consensus (ERIC) and Repetitive Extragenic Palindromic (REP) sequences, and five phylogenetic groups were formed. Despite their genetic diversity B. thuringiensis strains did not show any correlation between the collection sites and toxicity to larvae. Some B. thuringiensis strains are highly toxic to S. eridania, thus highlighting the potential of their endotoxins as biopesticides.

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Main Authors: Machado,Déborah Heloísa Bittencourt, Livramento,Kalynka Gabriela do, Máximo,Wesley Pires Flausino, Negri,Bárbara França, Paiva,Luciano Vilela, Valicente,Fernando Hercos
Format: Digital revista
Language:English
Published: Sociedade Brasileira De Entomologia 2020
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262020000100201
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spelling oai:scielo:S0085-562620200001002012020-02-21Molecular characterization of Bacillus thuringiensis strains to control Spodoptera eridania (Cramer) (Lepidoptera: Noctuidae) populationMachado,Déborah Heloísa BittencourtLivramento,Kalynka Gabriela doMáximo,Wesley Pires FlausinoNegri,Bárbara FrançaPaiva,Luciano VilelaValicente,Fernando Hercos Entomopathogenic bacteria Insect pest Molecular typing Toxicity Abstract The main objective of this study was to characterize the toxicity and genetic divergence of 18 Bacillus thuringiensis strains in the biological control of Spodoptera eridania. Bacterial suspensions were added to the S. eridania diet. Half of the selected B. thuringiensis strains caused high mortality seven days after infection. The genetic divergence of B. thuringiensis strains was assessed based on Enterobacterial Repetitive Intergenic Consensus (ERIC) and Repetitive Extragenic Palindromic (REP) sequences, and five phylogenetic groups were formed. Despite their genetic diversity B. thuringiensis strains did not show any correlation between the collection sites and toxicity to larvae. Some B. thuringiensis strains are highly toxic to S. eridania, thus highlighting the potential of their endotoxins as biopesticides.info:eu-repo/semantics/openAccessSociedade Brasileira De EntomologiaRevista Brasileira de Entomologia v.64 n.1 20202020-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262020000100201en10.1590/1806-9665-rbent-2019-47
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libraryname SciELO
language English
format Digital
author Machado,Déborah Heloísa Bittencourt
Livramento,Kalynka Gabriela do
Máximo,Wesley Pires Flausino
Negri,Bárbara França
Paiva,Luciano Vilela
Valicente,Fernando Hercos
spellingShingle Machado,Déborah Heloísa Bittencourt
Livramento,Kalynka Gabriela do
Máximo,Wesley Pires Flausino
Negri,Bárbara França
Paiva,Luciano Vilela
Valicente,Fernando Hercos
Molecular characterization of Bacillus thuringiensis strains to control Spodoptera eridania (Cramer) (Lepidoptera: Noctuidae) population
author_facet Machado,Déborah Heloísa Bittencourt
Livramento,Kalynka Gabriela do
Máximo,Wesley Pires Flausino
Negri,Bárbara França
Paiva,Luciano Vilela
Valicente,Fernando Hercos
author_sort Machado,Déborah Heloísa Bittencourt
title Molecular characterization of Bacillus thuringiensis strains to control Spodoptera eridania (Cramer) (Lepidoptera: Noctuidae) population
title_short Molecular characterization of Bacillus thuringiensis strains to control Spodoptera eridania (Cramer) (Lepidoptera: Noctuidae) population
title_full Molecular characterization of Bacillus thuringiensis strains to control Spodoptera eridania (Cramer) (Lepidoptera: Noctuidae) population
title_fullStr Molecular characterization of Bacillus thuringiensis strains to control Spodoptera eridania (Cramer) (Lepidoptera: Noctuidae) population
title_full_unstemmed Molecular characterization of Bacillus thuringiensis strains to control Spodoptera eridania (Cramer) (Lepidoptera: Noctuidae) population
title_sort molecular characterization of bacillus thuringiensis strains to control spodoptera eridania (cramer) (lepidoptera: noctuidae) population
description Abstract The main objective of this study was to characterize the toxicity and genetic divergence of 18 Bacillus thuringiensis strains in the biological control of Spodoptera eridania. Bacterial suspensions were added to the S. eridania diet. Half of the selected B. thuringiensis strains caused high mortality seven days after infection. The genetic divergence of B. thuringiensis strains was assessed based on Enterobacterial Repetitive Intergenic Consensus (ERIC) and Repetitive Extragenic Palindromic (REP) sequences, and five phylogenetic groups were formed. Despite their genetic diversity B. thuringiensis strains did not show any correlation between the collection sites and toxicity to larvae. Some B. thuringiensis strains are highly toxic to S. eridania, thus highlighting the potential of their endotoxins as biopesticides.
publisher Sociedade Brasileira De Entomologia
publishDate 2020
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262020000100201
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