Impact of <scp>C</scp>ry1<scp>A</scp>b toxin expression on the non‐target insects dwelling on maize plants

Habuštová, Oxana Skoková; Doležal, Petr; Spitzer, Lukáš; Svobodová, Zdeňka; Hussein, Hany M.; Sehnal, František

doi:10.1111/jen.12004

Cited by 18 publications

(26 citation statements)

References 47 publications

(80 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar results were achieved by Eckert et al (2006), andRamirez-Romero et al (2008). Also, Habuštova et al (2014) showed in field studies that the infestation of aphids, mainly Rhopalosiphum padi and Metopolophium dirhodum, was similar in both Bt and non-Bt plots. Because of the reflections above, and according to the results of our trials, we assume no effect of Bt maize on entomopathogens recorded on cereal aphids colonizing maize in the GM ecosystem.…”

Section: Discussionsupporting

confidence: 72%

“…The fact that the bacterial protein is not transported in the plant phloem leaves aphids unaffected by its direct action. Many studies have shown that Bt maize has no effect on R. padi, M. dirhodum or S. avenae development (Dutton et al, 2002;Habuštova et al, 2014). Despite this, the newest data from the enzyme linked immunosorbent assay (ELISA) tests referring to Cry3Bb toxin produced to control western corn rootworm (Diabrotica virgifera virgifera LeConte) on maize indicate possibilities of Bt protein flow from the plant to predators via the aphids (Stephens et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The effect of Cry1AB insecticidal protein on the incidence of entomopathogenic fungi infecting aphids on Bt maize

Hurej

Miętkiewski²,

Twardowski

2014

Zemdirbyste-Agriculture

View full text Add to dashboard Cite

There are substantial discrepancies in risk assessments of transgenic maize in Europe. The aim of the study was to determine the quantitative changes in the proportion of fungi-infected aphids and possible differences in the species composition of entomopathogenic fungi on conventional and genetically modified maize, expressing Cry1Ab protein from Bacillus thuringiensis (Bt). The experiments were performed in Lower Silesia, Poland, in 2008-2010. Three cultivars were used, i.e. DKC 3421 YG (Bt), isogenic non-Bt DKC 3420, and the conventional 'Bosman' as a reference. Aphids infected with fungi were counted in situ on 18 plants per plot every two weeks through each of the growing seasons. Additionally, twice a year dead aphids were also collected (60 aphids per treatment) and used for fungi identification. Cry1Ab insecticidal protein had no effect on the incidence of entomopathogenic fungi infecting aphids on Bt maize. The number of fungi-infected aphids and their time of occurrence were similar on the three compared cultivars. The same three or four species of entomopathogenic fungi-infected aphids were found in each treatment. Predominating in all the treatments were Pandora neoaphidis, Entomophthora planchoniana and Conidiobolus thromboides.

show abstract

Section: Discussionsupporting

confidence: 72%

Section: Introductionmentioning

confidence: 99%

The effect of Cry1AB insecticidal protein on the incidence of entomopathogenic fungi infecting aphids on Bt maize

Hurej

Miętkiewski²,

Twardowski

2014

Zemdirbyste-Agriculture

View full text Add to dashboard Cite

show abstract

“…- Habuštová et al (2012) performed a field study with maize MON 810 for three consecutive years in the Czech Republic, and compared the abundance and diversity of plant-dwelling arthropods between maize MON 810 and non-Bt-maize. Whole plants were collected (ten plants from each of five replicated plots of 0.5 ha) and specimen identified in the laboratory.…”

Section: Results From the Literature Searchmentioning

confidence: 99%

“…The EFSA GMO Panel considers that the conclusions of Habuštová et al (2012) are only partially supported by the data, so that conclusions can be drawn only for some of the species studied.…”

Section: Resultsmentioning

confidence: 99%

Scientific Opinion updating the risk assessment conclusions and risk management recommendations on the genetically modified insect resistant maize MON 810

2012

EFS2

View full text Add to dashboard Cite

Following a request from the European Commission, the Panel on Genetically Modified Organisms of the European Food Safety Authority (EFSA GMO Panel) compiled its previous risk assessment conclusions and risk management recommendations on the genetically modified insect resistant maize MON 810, and considered their validity in the light of new relevant scientific publications published from 2009 onwards. Following a search of the scientific literature published between 2009 and October 2012, the EFSA GMO Panel identified 165 peer-reviewed publications containing evidence specific to the risk assessment and/or management of maize MON 810, of which 68 publications were discussed and/or cited in previous EFSA GMO Panel scientific outputs. From the remaining 97 publications, eight were relevant for the molecular characterisation, 27 for food and feed safety assessment, 55 for the environmental risk assessment and/or risk management, two for the molecular characterisation and the environmental risk assessment and/or risk management and five for the food and feed safety assessment and the environmental risk assessment and/or risk management of maize MON 810. None of these publications reported new information that would invalidate the previous conclusions on the safety of maize MON 810 made by the EFSA GMO Panel. Therefore, the EFSA GMO Panel considers that its previous risk assessment conclusions on maize MON 810, as well as its previous recommendations on risk mitigation measures and monitoring, remain valid and applicable. DOI: https://doi.org/10. 2903/j.efsa.2012.3017 Posted at the Zurich Open Repository and Archive, University of Zurich ZORA URL: https://doi.org/10.5167/uzh-75246 Published Version Originally published at: Arpaia, Salvatore; Birch, Andrew N E; Chesson, Andrew; du Jardin, Patrick; Gathmann, Achim; Gropp, Jürgen; Herman, Lieve; Hoen-Sorteberg, Hilde-Gunn; Jones, Huw; Kiss, Jozsef; Kleter, Gijs; Lovik, Martinus; Messéan, Antoine; Naegeli, Hanspeter; Nielsen, Kaare Magne; Ovesna, Jaroslava; Perry, Joe; Rostoks, Nils; Tebbe, Christoph (2012) peer-reviewed publications containing evidence specific to the risk assessment and/or management of maize MON 810, of which 68 publications were discussed and/or cited in previous EFSA GMO Panel scientific outputs. From the remaining 97 publications, eight were relevant for the molecular characterisation, 27 for food and feed safety assessment, 55 for the environmental risk assessment and/or risk management, two for the molecular characterisation and the environmental risk assessment and/or risk management and five for the food and feed safety assessment and the environmental risk assessment and/or risk management of maize MON 810. None of these publications reported new information that would invalidate the previous conclusions on the safety of maize MON 810 made by the EFSA GMO Panel. Therefore, the EFSA GMO Panel considers that its previous risk assessment conclusions on maize MON 810, as well as its previous recommendations on risk mitigation measur...

show abstract

“…As the area under cultivation with Bt crops has steadily increased worldwide, environmental risk assessments (ERA) of Bt crops on non-target arthropods have attracted increasing attention from a number of researchers (Devos et al 2012;Guo et al 2014;Habuštová et al 2014;Romeis et al 2008). Laboratory and field studies have evaluated the effects of Bt maize on non-target arthropods.…”

Section: Discussionmentioning

confidence: 99%

Effects of transgenic cry1Ie maize on non-lepidopteran pest abundance, diversity and community composition

Guo

Bai

et al. 2016

Transgenic Res

View full text Add to dashboard Cite

Non-lepidopteran pests are exposed to, and may be influenced by, Bt toxins when feeding on Bt maize that express insecticidal Cry proteins derived from Bacillus thuringiensis (Bt). In order to assess the potential effects of transgenic cry1Ie maize on non-lepidopteran pest species and ecological communities, a 2-year field study was conducted to compare the non-lepidopteran pest abundance, diversity and community composition between transgenic cry1Ie maize (Event IE09S034, Bt maize) and its near isoline (Zong 31, non-Bt maize) by whole plant inspections. Results showed that Bt maize had no effects on non-lepidopteran pest abundance and diversity (Shannon-Wiener diversity index, Simpson's diversity index, species richness, and Pielou's index). There was a significant effect of year and sampling time on those indices analyzed. Redundancy analysis indicated maize type, sampling time and year totally explained 20.43 % of the variance in the non-lepidopteran pest community composition, but no association was presented between maize type (Bt maize and non-Bt maize) and the variance. Nonmetric multidimensional scaling analysis showed that sampling time and year, rather than maize type had close relationship with the non-lepidopteran pest community composition. These results corroborated the hypothesis that, at least in the short-term, the transgenic cry1Ie maize had negligible effects on the non-lepidopteran pest abundance, diversity and community composition.

show abstract

Impact of Cry1Ab toxin expression on the non‐target insects dwelling on maize plants

Cited by 18 publications

References 47 publications

The effect of Cry1AB insecticidal protein on the incidence of entomopathogenic fungi infecting aphids on Bt maize

The effect of Cry1AB insecticidal protein on the incidence of entomopathogenic fungi infecting aphids on Bt maize

Scientific Opinion updating the risk assessment conclusions and risk management recommendations on the genetically modified insect resistant maize MON 810

Effects of transgenic cry1Ie maize on non-lepidopteran pest abundance, diversity and community composition

Contact Info

Product

Resources

About