High throughput metabolome and proteome analysis of transgenic rice plants (Oryza sativa L.)

Abstract

We profiled metabolic patterns of transgenic rice organs and tissue by Fourier-transform ion cyclotron mass spectrometry (FT-MS) to reveal effects of the over-expression of YK1 possessing high homology with maize HC-toxin reductase gene. Comparison of metabolic patterns revealed that compositions of organ- or tissue-specific metabolites were not significantly varied between the control and the YK1 rice, where expression levels of some metabolites were altered. Proteome analysis of cultured cells over-expressing YK1 showed the up-regulation of several stress-related proteins such as osmotin-like protein and osr40c1. Thus, alteration of metabolites as well as proteins may contribute to multiple stress tolerances in transgenic YK1 rice.