Fig. 7From: Genome-wide identification and characterization of NAC transcription factor family members in Trifolium pratense and expression analysis under lead stressAnalysis of the expression patterns of TpNACs under different concentrations of lead stress. (A) Expression calorigram of TpNAC genes after 45 days of lead stress treatment at concentrations of 0, 500, 1000, 2000 and 3000Â mg/kg. (B) The expression levels of 8 TpNAC genes were measured at 0Â h, 12Â h, 24Â h, 36 and 48Â h in 45-day-old red clover leaves subjected to 1000Â mg/kg stressBack to article page