Fig. 3

Expression profile analysis of the drought-related genes or transcription regulators by RT-PCR. 45-day-old plants were subjected to drought stress, with no water for 2 weeks. mRNA was extracted from roots of normal irrigated plants (Control) and drought exposed plants after 2, 4, 6, 8 and 10 days. Deeper rooting (DRO) potato, LRR receptor-like serine/threonine-protein kinase ERECTA (ERECTA), ethylene response factor (ERF), dehydration responsive element binding (DREB) and StMYB were examined in Atlantic cv., Agata cv., Diamond cv., Kennebec cv., Russet Burbank cv. and Anya cv. and Gala cv. plants. The findings were verified to be reproducible using samples from three independently grown plants. PCR products were analyzed on a 2% agarose gel