Abstract
Pleiotropic effects are one of the main concerns regarding genetically modified organisms (GMOs). This includes unintended side effects of the transgene or its genome insertion site on the regulation of other endogenous genes, which could potentially cause the accumulation of different secondary metabolites that may have not only an impact on diet as repeatedly worried by the public but also on the environment. Regarding amount and possible environmental effects, flavonoids represent the most prominent group of secondary metabolites in wheat. Many flavonoids function as signalling or defence molecules. We used a robust and reproducible analytical method to compare the flavonoid content of genetically modified (GM) wheat (Triticum aestivum L., Gramineae) expressing genes that confer increased fungal resistance with their non-GM siblings. The transgenes provide either a broad-spectrum fungal defence (chitinase/glucanase from barley) or bunt-specific resistance by a viral gene (KP4). Significant differences in flavonoid composition were found between different wheat varieties whereas different lines of GM wheat with increased antifungal resistance showed only minor differences in their flavonoid composition relative to their non-GM siblings. In a field test, no significant differences were detectable between infected and non-infected wheat of the same variety regardless of the presence of the transgene. Our results are in agreement with the hypothesis that the transgenes we used to increase wheat defence to fungal pathogens do not interfere with the flavonoid biosynthesis pathway. More significantly, the genetic background resulting from conventional breeding has a direct impact on the biological composition of flavonoids, and thus possibly on the environment.
Similar content being viewed by others
Abbreviations
- APCI:
-
Atmospheric pressure chemical ionisation
- Arb:
-
Arbitrary units
- CID:
-
Collision induced dissociation energy
- DAD:
-
Diode array detector
- ESI:
-
Electrospray ionisation
- GMO:
-
Genetically modified organism
- HPLC/UV:
-
High pressure liquid chromatography w. ultra violet detection
- HPLC/MS:
-
High pressure liquid chromatography w. mass spectrometer
- LN2 :
-
Liquid nitrogen
- PCA:
-
Principal component analysis
- RH:
-
Relative humidity
- RT:
-
Room temperature
- SPE:
-
Solid phase extraction
- Wt:
-
Wild type
References
Adom KK, Sorrells ME, Liu RH (2003) Phytochemical profiles and antioxidant activity of wheat varieties. J Agric Food Chem 51:7825–7834
Altpeter F, Diaz I, McAuslane H et al (1999) Increased insect resistance in transgenic wheat stably expressing trypsin inhibitor CMe. Mol Breed 5:53–63
Baker JM, Hawkins ND, Ward JL et al (2006) A metabolomic study of substantial equivalence of field-grown genetically modified wheat. Plant Biotechnol J 4:381–392
Baudo MM, Lyons R, Powers S et al (2006) Transgenesis has less impact on the transcriptome of wheat than conventional breeding. Plant Biotechnol J 4:369–380
Beier RC (1990) Natural pesticides and bioactive components in foods. Rev Environ Contam Toxicol 113:47–137
Bieri S, Potrykus I, Fütterer J (2000) Expression of active barley seed ribosome-inactivating protein in transgenic wheat. Theor Appl Genet 100:755–763
Bieri S, Potrykus I, Fütterer J (2003) Effects of combined expression of antifungal barley seed proteins in transgenic wheat on powdery mildew infection. Mol Breed 11:37–48
Bliffeld M, Mundy J, Potrykus I (1999) Genetic engineering of wheat for increased resistance to powdery mildew disease. Theor Appl Genet 98:1079–1086
Catchpole GS, Beckmann M, Enot DP et al (2005) Hierarchical metabolomics demonstrates substantial compositional similarity between genetically modified and conventional potato crops. Proc Natl Acad Sci USA 102:14458–14462
Cellini F, Chesson A, Colquhoun I et al (2004) Unintended effects and their detection in genetically modified crops. Food Chem Toxicol 42:1089–125
Chen WP, Chen PD, Liu DJ (1999) Development of wheat scab symptoms is delayed in transgenic wheat plants that constitutively express a rice thaumatin-like protein gene. Theor Appl Genet 99:755–760
Clausen M, Krauter R, Schachermayr G et al (2000) Antifungal activity of a virally encoded gene in transgenic wheat. Nat Biotechnol 18:446–449
Claverie JM (1999) Computational methods for the identification of differential and coordinated gene expression. Hum Mol Genet 8:1821–1832
Conner AJ, Jacobs JME (1999) Genetic engineering of crops as potential source of genetic hazard in the human diet. Mutat Res Genet Toxicol and Environ Mutagen 443:223–234
Corpillo D, Gardini G, Vaira AM et al (2004) Proteomics as a tool to improve investigation of substantial equivalence in genetically modified organisms: the case of a virus-resistant tomato. Proteomics 4:193–200
Cuyckens F, Claeys M (2004) Mass spectrometry in the structural analysis of flavonoids. J Mass Spectrom 39:1–15
Daniel O, Meier MS, Schlatter J et al (1999) Selected phenolic compounds in cultivated plants: ecologic functions, health implications, and modulation by pesticides. Environ Health Perspect 107:109–114
Delhaize E, Hebb DM, Richards KD et al (1999) Cloning and expression of a wheat (Triticum aestivum L.) phosphatidylserine synthase cDNA. Overexpression in plants alters the composition of phospholipids. J Biol Chem 274:7082–8
Domon B, Costello C (1988) A systematic nomenclature for the carbogydrate fragmentation in FAB-MS/MS spectra of glycoconjugates. Glycoconj J 5:397–409
Eisen MB, Spellman PT, Brown PO et al (1998) Cluster analysis and display of genome-wide expression patterns. Proc Natl Acad Sci USA 95:14863–14868
Finer JJ, Vain P, Jones NW et al (1992) Development of the particle inflow gun for DNA delivery to plant cells. Plant Cell Reports 11:323–328
Ferreres F, Silva BM, Andrade PB et al (2003) Approach to the study of C-glycosyl flavones by ion trap HPLC_PAD-ESI/MS/MS: application to seeds of quince (Cydonia oblonga). Phytochem Anal 14:352–359
Ferreres F, Llorach R, Gil-Izquierdo A (2004) Characterization of the interglycosidic linkage in di-, tri-, tetra- and pentaglycosylated flavonoids and the differentiation of positional isomers by liquid chromatography/electrospray tandem mass spectrometry. J Mass Spectrom 39:312–321
Guess MJ, Wilson SB (2002) Introduction to hierarchical clustering. J Clin Neurophysiol 19:144–151
Harborne JB (1986) Distribution and function of plant flavonoids. Prog Clin Biol Res Nat 213:15–24
Harborne JB, Grayer RJ (1993) Flavonoids and insects. In: Harborne JB (ed) The flavonoids, advances in Research since 1986. Chapman and Hall, London
Harborne JB, Hall E (1964) Plant polyphenols 12. The occurrence of tricin and of glycoflavones in grasses. Phytochemistry 3:421–428
Harvey MH, McMillan M, Morgan MR et al (1985) Solanidine is present in sera of healthy individuals and in amounts dependent on their dietary potato consumption. Hum Toxicol 4:187–94
Julian EA, Johnson G, Johnson DK et al (1971) The glycoflavonoid pigments of wheat, Triticum eastivum leaves. Phytochemistry 10:3185–3193
Lehesranta SJ, Davies HV, Shepherd LV et al (2005) Comparison of tuber proteomes of potato varieties, landraces, and genetically modified lines. Plant Physiol 138:1690–1699
Markham KR (1982) Techniques of flavonoid identification. Academic Press, London
Obert JC, Ridley WP, Schneider RW et al (2004) The composition of grain and forage from glyphosate tolerant wheat MON 71800 is equivalent to that of conventional wheat (Triticum aestivum L.). J Agric Food Chem 52:1375–1384
Oerke EC, Dehne HW, Schönbeck F et al (1994) Crop production and crop protection. Elsevier Science, Amsterdam
Raychaudhuri S, Stuart JM, Altman RB (2000) Principal components analysis to summarize microarray experiments: application to sporulation time series. In: Altman RB (ed) Pacific symposium on biocomputing 2000, Honolulu, January 2000. Stanford Medical Informatics, Stanford, CA, pp 455–466
Schlaich T, Urbaniak BM, Malgras N et al (2006) Increased field resistance to Tilletia caries provided by a specific anti-fungal virus gene in genetically engineered wheat. Plant Biotechnol J 4:63–75
Shewmaker CK, Sheehy JA, Daley M et al (1999) Seed-specific overexpression of phytoene synthase: increase in carotenoids and other metabolic effects. Plant J. 20:401–412
Shimodaira H (2004) Approximately unbiased tests of regions using multistep-multiscale bootstrap resampling. Ann Statist 32:2616–2641
Sivamani E, Bahieldin A, Wraith JM et al (2000) Improved biomass productivity and water use efficiency under water deficit conditions in transgenic wheat constitutively expressing the barley HVA1 gene. Plant Sci 155:1–9
Thomas WTB, Baird E, Fuller JD et al (1998) Identification of a QTL decreasing yield in barley linked to Mlo powdery mildew resistance. Mol Breed 4:381–393
Wagner H, Obermeier G, Chari VM et al (1980) Flavonoid-C-glycosides from Triticum aestivum L. J Nat Prod 43:583–587
Waridel P, Wolfender JL, Ndjoko K et al (2001) Evaluation of quadrupole time-of-flight tandem mass spectrometry and ion-trap multiple-stage mass spectrometry for the differentiation of C-glycosidic flavonoid isomers. J Chrom A 926:29–41
Wiese MV (1991) Compendium of wheat diseases. American Phytopatological Society, St. Paul, MN, U.S.A
Wolfender JL, Hostettmann K (1993) Liquid-chromatographic UV detection and liquid chromatographic thermospray mass-spectrometric analysis of Chironia (Gentianaceae) species - a rapid method for the screening of polyphenols in crude plant-extracts. J Chrom A 647:191–202
Zadoks JC, Chang TT, Konzak CF (1974) A decimal code for the growth stages of cereals. Weed Res 14:415–421
Acknowledgements
We would like to thank Elke Fenner for technical assistance, Katalin Konya and Sabine Klarer for the propagation and maintenance of our plants in the greenhouse and Catherine Werlen for help during the initial stage of the experiments.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Ioset, JR., Urbaniak, B., Ndjoko-Ioset, K. et al. Flavonoid profiling among wild type and related GM wheat varieties. Plant Mol Biol 65, 645–654 (2007). https://doi.org/10.1007/s11103-007-9229-9
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11103-007-9229-9