Altered sucrose degradation pathway using Plant MetGenMAP software http://bioinfo.bti.cornell.edu/cgi-bin/MetGenMAP/home.cgiconstructed on the basis of differentially expressed genes and metabolite content alteration. The rice variety IR-64 was germinated and allowed to grow for 5 d at 37°C and then transferred to Hewitt solution for growth. After 10 d of growth, seedlings of uniform size and growth were treated with 100 μM of Cr (VI) under standard physiological conditions. The microarray was performed using one-cycle target labeling and control reagents. The hybridization data were analyzed using dCHIP software. Metabolites in rice roots exposed to 100 μM Cr (VI) for 24 h analyzed mainly by GC-MS and NMR.