Author/Editor		Coll, Anna; Nadal, Anna; Rossignol, Michel; Puigdomenech, Pere; Pla, Maria
Title		Proteomic analysis of MON810 and comparable non-GM maize varieties grown in agricultural fields
Type		članek
Source		Transgenic Res
Vol. and No.		Letnik 20, št. 4
Publication year		2011
Volume		str. 939-49
Language		eng
Abstract		Worldwide maize is the second major agricultural commodity and around one-fourth is currently biotech, with significant application of the insect resistant event MON810 particularly in the European Union. Grains are the major commercialized part of the plant, and can be harvested after maturity (for food and feed purposes) or at late milky-starchy stage (for forage uses, with the whole plant). We assessed possible proteomic unintended effects of the MON810 transgene using two-dimensional gel electrophoresis coupled to mass spectrometry. To keep in a realistic scenario we used plants grown in agricultural fields in a region where ~50% of maize was MON810, and analyzed grains at milky-starchy stage. In maize, differential transcripts and metabolites between GM and comparable non-GM varieties tend to be variety specific. Thus, we analyzed two variety pairs, DKC6575/Tietar and PR33P67/PR33P66 which are considered representative of Food and Agriculture Organization 700 and 600 varieties commercially grown in the region. MON810 and non-GM milky-starchy grains had virtually identical proteomic patterns, with a very small number of spots showing fold-variations in the 1-1.8 range. They were all variety specific and had divergent identities and functions. Although 2DE allows the analysis of a limited dataset our results support substantial equivalence between MON810 and comparable non-GM varieties.
Descriptors		CORN PLANTS, TRANSGENIC PLANT PROTEINS INSECTS ELECTROPHORESIS, GEL, TWO-DIMENSIONAL SPECTRUM ANALYSIS, MASS POLYMERASE CHAIN REACTION