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Characterization of Bacillus thuringiensis (Bacillaceae) Strains Pathogenic to Myzus persicae (Hemiptera: Aphididae)

M. Torres-Quíntero,Iván Arenas-Sosa,V. Hernández-Velázquez,R. Suárez‐Rodríguez,G. Peña-Chora

Published 2016 in Florida Entomologist

ABSTRACT

Abstract Forty strains of Bacillus thuringiensis Berliner (Baciliales: Bacillaceae) that were isolated from corpses of Hemiptera were assessed against Myzus persicae (Sulzer) (Hemiptera: Aphididae), an aphid that is considered one of the most destructive pests affecting the agricultural economy. Seventeen strains were significantly different from the control according to the LSD test (α = 0.05). They caused mortality rates ranging from 64.4 to 88.9% at 10 ng/μL total protein concentration, and from 71.1 to 91.1% at 100 ng/μL total protein concentration. The virulence (LC50) of these 17 strains was calculated, and 5 strains showed the highest virulence (GP777 = 10.63 ng/μL, HD1 = 9.10 ng/μL, GP528 = 7.86 ng/μL, GP402 = 7.12 ng/μL, and GP300 = 6.88 ng/μL). These strains have the potential to be used as an alternative to control M. persicae under field and covered conditions.

PUBLICATION RECORD

  • Publication year

    2016

  • Venue

    Florida Entomologist

  • Publication date

    2016-12-20

  • Fields of study

    Biology, Agricultural and Food Sciences, Environmental Science

  • Identifiers
    DOI 10.1653/024.099.0409
  • External record

    Open on Semantic Scholar

  • Source metadata

    Semantic Scholar

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