Effect of MON 810 Bt transgenic maize diet on stored-product moths (Lepidoptera: Pyralidae)

Hubert, Jan; Kudlikova-Krizkova, Iva; Stejskal, V.

doi:10.1016/j.cropro.2007.08.005

Cited by 15 publications

(17 citation statements)

References 32 publications

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“…The results of novel DNA and Cry1Ab protein quantification in feed indicate that most of the ingested Cry1Ab protein and cry1Ab DNA originate from corn stem pellets. It could be supported by the findings that the Cry1Ab expression is variable among different corn tissues (Hubert et al, 2008) and that corn stem pellets are rich in recombinant DNA as compared to corn silage and grains. During the first lactation, the mean Cry1Ab protein intake was 6.0 mg kg −1 DM among cows fed GM corn, whereas the mean Cry1Ab protein intake during the second lactation was 6.1 mg kg −1 DM (Steinke et al, 2009).…”

Section: Discussionmentioning

confidence: 78%

Long-term feeding of genetically modified corn (MON810) — Fate of cry1Ab DNA and recombinant protein during the metabolism of the dairy cow

et al. 2010

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Section: Discussionmentioning

confidence: 78%

Long-term feeding of genetically modified corn (MON810) — Fate of cry1Ab DNA and recombinant protein during the metabolism of the dairy cow

et al. 2010

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“…The isolates 13MY and 42MY exhibited a larval toxicity around 97%. Similarly, Hubert et al (2008) fed C. cautella larvae with a diet of transgenic maize containing Cry1Ab toxin and observed a mortality rate around 100%.…”

Section: Discussionmentioning

confidence: 99%

Distribution, occurrence of cry genes, and lepidopteran toxicity of native Bacillus thuringiensis isolated from fig tree environments in Aydın Province

Alper¹,

Güneş

Tatlipinar³

et al. 2014

Turk J Agric For

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Bacillus thuringiensis (Bt) has a significant impact on biological pest control because of the insecticidal activity through its parasporal inclusion bodies (crystal proteins). Fig is an economically important plant in Turkey; agricultural pests result in a considerable economic loss in fig quality and cultivation. The aim of this work was to isolate, characterize, and determine the lepidopteran toxicity of Bt obtained from fig groves in Aydın Province. A total of 606 colonies (out of 1167) obtained from 380 samples were identified as Bt based on parasporal crystal formation. The highest Bt index of 0.60 was observed in the Kuyucak region. A total of 288 Bt isolates were characterized in terms of cry gene content by PCR analysis. It was found that the cry1 plus cry2 genotype was the most abundant (40%) in our collection. Bioactivity tests indicated that 6 isolates exhibited high mortalities against Cadra cautella and 3 isolates were found to exhibit high toxicity against Carpophilus hemipterus. Moreover, 13 Bt isolates exhibiting toxic activity against fig pests were further characterized based on specific cry gene content, protein profiles, and PCR-RFLP analysis. Among cry1 genes, the cry1Aa, cry1Ab, cry1Ac, cry1B, cry1C, cry1D, and cry1Ea genes were the most frequent (100%). Protein profiles of isolates toxic to C. cautella were different from those of isolates toxic to C. hemipterus. PCR-RFLP analysis indicated that toxic isolates differed from the reference strain with respect to cry1 type gene. Finally, it was concluded that Bt strains isolated from fig groves showed high level of toxicity against fig pests. These strains can serve as potential biopesticides for the control of C. cautella in the region as well as alternative biopesticides in the case of pesticide resistance in insects.

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“…This trait also offers protection against certain moths during maize grain storage (Hubert et al 2008). …”

Section: Introductionmentioning

confidence: 99%

Is the German suspension of MON810 maize cultivation scientifically justified?

Ricroch

Bergé²,

Kuntz

2009

Transgenic Res

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We examined the justifications invoked by the German government in April 2009 to suspend the cultivation of the genetically modified maize varieties containing the Bt insect-resistance trait MON810. We have carried out a critical examination of the alleged new data on a potential environmental impact of these varieties, namely two scientific papers describing laboratory force-feeding trials on ladybirds and daphnia, and previous data on Lepidoptera, aquatic and soil organisms. We demonstrate that the suspension is based on an incomplete list of references, ignores the widely admitted case-by-case approach, and confuses potential hazard and proven risk in the scientific procedure of risk assessment. Furthermore, we did not find any justification for this suspension in our extensive survey of the scientific literature regarding possible effects under natural field conditions on non-target animals. The vast majority of the 41 articles published in 2008 and 2009 indicate no impact on these organisms and only two articles indicate a minor effect, which is either inconsistent during the planting season or represents an indirect effect. Publications from 1996 to 2008 (376 publications) and recent meta-analyses do not allow to conclude on consistent effects either. The lower abundance of some insects concerns mainly specialized enemies of the target pest (an expected consequence of its control by Bt maize). On the contrary, Bt maize have generally a lower impact than insecticide treatment. The present review demonstrates that the available meta-knowledge on Cry1Ab expressing maize was ignored by the German government which instead used selected individual studies.Electronic supplementary materialThe online version of this article (doi:10.1007/s11248-009-9297-5) contains supplementary material, which is available to authorized users.

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Effect of MON 810 Bt transgenic maize diet on stored-product moths (Lepidoptera: Pyralidae)

Cited by 15 publications

References 32 publications

Long-term feeding of genetically modified corn (MON810) — Fate of cry1Ab DNA and recombinant protein during the metabolism of the dairy cow

Long-term feeding of genetically modified corn (MON810) — Fate of cry1Ab DNA and recombinant protein during the metabolism of the dairy cow

Distribution, occurrence of cry genes, and lepidopteran toxicity of native Bacillus thuringiensis isolated from fig tree environments in Aydın Province

Is the German suspension of MON810 maize cultivation scientifically justified?

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