The differences in leaf proteins observed either between the genotypes or between control (C) and drought-stressed (S) plants of 2023 and CE704 maize genotypes, as evaluated by the 2D-electrophoresis method.

AT  =  Arabidopsis thaliana (L.) Heynh.; ETC  =  electron transport chain; OEC  =  oxygen evolving complex of photosystem II; OS  =  Oryza sativa L.; LE  =  Lycopersicon esculentum Mill.; TA  =  Triticum aestivum L.; ZM  =  Zea mays L. The following symbols indicate the quantity of individual spots: –  =  absence, +/−  =  very weak intensity, +  =  medium intensity, ++  =  high intensity.