Activity of a Brazilian strain of Bacillus thuringiensis israelensis against the cotton boll weevil Anthonomus grandis Boheman (Coleoptera: Tenebrionidae)

Monnerat, R., Martins, E., Praça, L., Dumas, V. and Berry, Colin ORCID: https://orcid.org/0000-0002-9943-548X 2012. Activity of a Brazilian strain of Bacillus thuringiensis israelensis against the cotton boll weevil Anthonomus grandis Boheman (Coleoptera: Tenebrionidae). Neotropical Entomology 41 (1) , pp. 62-67. 10.1007/s13744-011-0008-6

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Abstract

A Brazilian Bacillus thuringiensis subspecies israelensis, toxic to Diptera, including mosquitoes, was found also to show toxicity to the coleopteran boll weevil Anthonomus grandis Boheman at an equivalent level to that of the standard coleopteran-active B. thuringiensis subspecies tenebrionis T08017. Recombinant B. thuringiensis strains expressing the individual Cyt1Aa, Cry4Aa, Cry4Ba and Cry11Aa toxins from this strain were assessed to evaluate their potential contribution to the activity against A. grandis, either alone or in combination. Whilst individual toxins produced mortality, none was sufficiently potent to allow calculation of LC50 values. Combinations of toxins were unable to attain the same potency as the parental B. thuringiensis subsp. israelensis, suggesting a major role for other factors produced by this strain.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Biosciences
Publisher:	Springer
ISSN:	1519-566X
Last Modified:	27 Oct 2022 08:57
URI:	https://orca.cardiff.ac.uk/id/eprint/63900

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