Fig. 7From: Identification and expression analysis of ATP-binding cassette (ABC) transporters revealed its role in regulating stress response in pear (Pyrus bretchneideri)Expression levels of PbrABC transporter genes under drought stress. RNA-seq data were used to measure the expression level of PbrABC transporter genes under drought treatment. Blue indicates a low expression level and red indicates a high expression level. The heatmap was generated using TBtoolsBack to article page