Fig. 2. Quantitative expression analysis of genes with putative function of disease resistance and drought tolerance by reverse transcription PCR (RT-PCR). Total RNA was extracted from peanut C34-24 leaf samples of healthy plants (A), drought stressed plants (B), or plants challenged by fungal leaf spots (C), and from peanut A13 immature seeds without stress (D), drought stressed (E), or challenged by fungus Aspergillus flavus under drought stress (D). Genes examined: 1-Histone H3.3 (positive internal control), 2-Allergen Ara h3/4, 3-10-kDa protein, 4-Leucine-rich protein, 5-Bax inhibitor, 6-Heat shock cognate protein, 7-Non-specific lipid transfer protein, 8-drought inducible 22-kDa protein, 9-drought inducible RPR 10, 10-Defensin protein.