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Transcript level of the CKX1 gene in leaves and roots of CKX1 transgenic tobacco plants. Control, control (hydrated) conditions; D, drought stress (10 d dehydration); D+HS, combined drought and heat stress (10 d dehydration+40 °C for 2h); D recovery, 24h recovery following rehydration; D+HS recovery, 24h recovery after combined stress; 2h HS; heat stress (40 °C for 2h); 6h HS, heat stress (40 °C for 6h).
