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. 2021 Sep 24;108(4):1053–1068. doi: 10.1111/tpj.15492

Figure 5.

Figure 5

GC‐MS total ion chromatograms (a) and mass spectra (b) of diterpenoids detected in organic solvent extracts of switchgrass roots identified diterpenoids 4 and 19. FA, fatty acid derivative. (c) Hierarchical cluster analysis of select diTPS and CYP71Z25–CYP71Z29 gene expression profiles from drought‐stressed tissues. Samples were collected before starting treatment (W0), and then after 2 weeks (W2) and 4 weeks (W4) of drought stress treatment. Key: C, well‐watered; D, drought stressed; L, leaves; R, roots.