2011
DOI: 10.1128/aem.02462-10
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Novel Bacillus thuringiensis δ-Endotoxin Active against Locusta migratoria manilensis

Abstract: A novel ␦-endotoxin gene was cloned from a Bacillus thuringiensis strain with activity against Locusta migratoria manilensis by PCR-based genome walking. The sequence of the cry gene was 3,432 bp long, and it encoded a Cry protein of 1,144 amino acid residues with a molecular mass of 129,196.5 kDa, which exhibited 62% homology with Cry7Ba1 in the amino acid sequence. The ␦-endotoxin with five conserved sequence blocks in the amino-terminal region was designated Cry7Ca1 (GenBank accession no. EF486523). Protein… Show more

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Cited by 24 publications
(18 citation statements)
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“…Likewise, Plutella xylostella larvae were also not sensitive to protoxin of Cry7-Bal (Peng et al, 2011). Wu et al reported that Cry7Ca1 had toxicity to Locusta migratoria manilensis (Orthoptera: Locustoidea) (Wu et al, 2011). We found and reported that Cry7Ab3 toxin had insecticidal activity against larvae of Henosepilachna vigintioctomaculata (28-spotted potato ladybird) for the first time (Song et al, 2008).…”
Section: Introductionmentioning
confidence: 78%
“…Likewise, Plutella xylostella larvae were also not sensitive to protoxin of Cry7-Bal (Peng et al, 2011). Wu et al reported that Cry7Ca1 had toxicity to Locusta migratoria manilensis (Orthoptera: Locustoidea) (Wu et al, 2011). We found and reported that Cry7Ab3 toxin had insecticidal activity against larvae of Henosepilachna vigintioctomaculata (28-spotted potato ladybird) for the first time (Song et al, 2008).…”
Section: Introductionmentioning
confidence: 78%
“…Within‐order species‐to‐species variation in susceptibility to particular Bt Cry proteins is known and this has necessitated the development of GM plants with stacked Bt traits for effective control of some suites of closely related pests (e.g., Chitkowski et al ., ). Bt's utility as a source of genetic material for GM insect‐resistant crops has led to a concerted effort to find novel Bt toxins active against pest groups previously thought to be refractory, such as the Hemiptera (Baum et al ., ), mites (Erban et al ., ), Orthoptera (Wu et al ., ), and nematodes (e.g., Cappello et al ., ). Furthermore, recent evidence of cross‐order, cross‐class, and cross‐phylum activity of many Bt toxins suggests some caution is warranted in assuming that phylogeny predicts susceptibility to Bt (van Frankenhuyzen, , ).…”
Section: Introductionmentioning
confidence: 97%
“…Wu et al (2011) described the toxic effect of a novel B. thuringiensis d-endotoxin against Locusts (Orthoptera: Acrididae): Locusta migratoria manilensis; pests that cause extensive destruction of crops. Also, previous studies reported the entomocidal activity of novel B. thuringiensis-endotoxins to Lygus Hesperus Knight (Hemiptera: Miridae) (WellmanDesbiens and Côt e, 2005), the cotton aphids Aphis gossypii (Hemiptera: Aphididae) and whiteflies Bemisia tabaci (Hemiptera: Aleyrodidae) (Malik and Riazuddin, 2006).…”
Section: Insecticidal Activity Of B Thuringiensis Derived Biopesticidesmentioning
confidence: 99%