Skip to main content
Log in

Validation of a Real-Time PCR On-Site Quantification Method for MON810 Maize

  • Published:
Food Analytical Methods Aims and scope Submit manuscript

Abstract

A rapid on-, or near-site, quantitative method for use as a pre-harvest predictive decision, or co-existence monitoring, tool for adventitious genetically modified (GM) presence has been developed. Based on a laboratory-based protocol for real-time (RT) quantification of the MON810 GM event in maize kernels, the duplex RT polymerase chain reaction method was constructed around the portable Cepheid SmartCyclerII platform, requiring only modest support infrastructure for field application. Validation through an international ring trial showed good compliance with minimum assay performance requirements as defined by the European Network of GMO Laboratories (RSDr = 18.5%; RSDR = 32.8; Bias = 26.7%).

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1

Similar content being viewed by others

References

  • Aguilera M, Querci M, Balla B, Prospero A, Ermolli M, Van den Eede G (2008) A qualitative approach for the assessment of the genetic stability of the MON 810 trait in commercial seed maize varieties. Food Anal Methods 1:252–258

    Article  Google Scholar 

  • Aguilera M, Querci M, Pastor S, Bellocchi G, Milcamps A, Van den Eede G (2009) Assessing copy number of MON 810 integrations in commercial seed maize varieties by 5′ event-specific real-time PCR validated method coupled to 2 (-Delta Delta CT) analysis. Food Anal Methods 2:73–79

    Article  Google Scholar 

  • Allnutt TR, Dwyer M, McMillan J, Henry C, Langrell SRH (2008) Sampling and modeling for quantification of adventitious GM presence in maize. J Agric Food Chem 56(9):3232–3237

    Article  CAS  Google Scholar 

  • Allnutt TR, Ayadi M, Berben G, Brodmann P, Lee D (2010) Evaluation of different machines for GM quantification by real-time PCR. J AOAC Int 93(4):1243–1248

    CAS  Google Scholar 

  • Commission Recommendation 2004/787/EC of 4 October 2004 on technical guidance for sampling and detection of genetically modified organisms and material produced from genetically modified organisms as or in products in the context of Regulation (EC) No 1830/2003

  • Commission Recommendation (EC) of 13 July 2010 on guidelines for the development of national co-existence measures to avoid the unintended presence of GMOs in conventional and organic crops (2010/C 200/01)

  • Commission Regulation (EC) No 1829/2003 of the European Parliament and of the Council of 22 September 2003 on genetically modified food and feed

  • Corbisier P, Bhat S, Partis L, Rui Dan Xie V, Emslie KR (2010) Absolute quantification of genetically modified MON810 maize (Zea mays L.) by digital polymerase chain reaction. Anal Bioanal Chem 396(6):2143–2150

    Article  CAS  Google Scholar 

  • European Network of GMO Laboratories (ENGL) Definition of Minimum Performance Requirements for Analytical Methods for GMO Testing (13 October 2008). http://gmo-crl.jrc.ec.europa.eu/doc/Min_Perf_Requirements_Analytical_methods.pdf

  • Grothaus GD, Bandla M, Currier T, Giroux R, Jenkins GR, Lipp M, Shan GM, Stave JW, Pantella V (2006) Immunoassay as an analytical tool in agricultural biotechnology. J AOAC Int 89(4):913–928

    CAS  Google Scholar 

  • Hernandez M, Duplan M-N, Berthier G, Vaitilingom M, Hauser W, Freyer R, Pla M, Bertheau Y (2003) Development and comparison of four real-time polymerase chain reaction systems for specific detection and quantification of Zea mays L. J Agric Food Chem 52:4632–4637

    Article  Google Scholar 

  • Kowalski RP, Thompson PP, Kinchington PR, Gordon YJ (2006) Evaluation of the SmartCycler II system for real-time detection of viruses and Chlamydia from ocular specimens. Arch Ophthalmol 124(8):1135–1139

    Article  Google Scholar 

  • Redmund KM, Dixon DA, Wright DL, Holden LR (2001) Statistical considerations in seed purity testing for transgenic traits. Seed Sci Res 11(2):101–119

    Google Scholar 

  • Thompson PP, Kowalski RP, Shanks RMQ, Gordon YJ (2008) Validation of real-time PCR for laboratory diagnosis of Acanthamoeba keratitis. J Clin Microbiol 46(10):3232–3236

    Article  CAS  Google Scholar 

  • Tomlinson JA, Boonham N, Hughes KJD, Griffen RL, Barker I (2005) On-site DNA extraction and real-time PCR for detection of Phytophthora ramorum in the field. Appl Environ Microbiol 71(11):6702–6710

    Article  CAS  Google Scholar 

  • Trifa Y, Zhang D (2004) DNA content in embryo and endosperm of maize kernel (Zea mays L.): impact on GMO quantification. J Agric Food Chem 52(5):1044–1048

    Article  CAS  Google Scholar 

Download references

Acknowledgments

We would like to thank Cepheid Europe for assistance in supplying additional on-site instruments to partner laboratories. This research was conducted within Work Package 9 of the SIGMEA project (Contract number 501986) funded under EU Framework Programme 6.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Stephen R. H. Langrell.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Langrell, S.R.H., Allnutt, T.R., Laval, V. et al. Validation of a Real-Time PCR On-Site Quantification Method for MON810 Maize. Food Anal. Methods 4, 313–318 (2011). https://doi.org/10.1007/s12161-010-9167-z

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12161-010-9167-z

Keywords

Navigation