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Fig. 6 | BMC Plant Biology

Fig. 6

From: Identification and analysis of glutathione S-transferase gene family in sweet potato reveal divergent GST-mediated networks in aboveground and underground tissues in response to abiotic stresses

Fig. 6

Hierarchical clustering of gene-expression data. a The FPKM data of 27 GST genes across 8 different tissues of purple-flesh and non-purple-flesh sweet potato were extracted from DB16 (log2 transformed, see text for more details) and color scaled as shown in the bottom (gray boxes mean FPKM = 0). S, shoot; YL, young leaf; ML, mature leaf; T, stem; FR, fibrous root; IR, initial tuberous roots; ER, expending tuberous root; MR, mature tuberous root. b The fold changes (test to control samples in aboveground and underground tissues, respectively) of gene expression in five experiments of abiotic stress treatments were calculated and color scaled as shown in the bottom. The expression data of all 42 full-length GSTs were obtained by quantitative RT-PCR. -A, aboveground; −U, underground; H2O2, hydrogen peroxide; Cu, copper stress; As, arsenic; Cd, cadmium; Zn, zinc

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