Figure 8

qRT-PCR analysis of the genes involved podophyllotoxin biosynthesis pathway in L. album. The GAPDH gene was used as an internal control to normalize the expression data. The relative expression levels of each genes were expressed as the fold change between control and other treatment. SDH, Secoisolariciresinol dehydrogenase; 2-ODD, Deoxypodophyllotoxin synthase; OMT1, 5′-desmethyl-yatein O-methyltransferase. The treatments are shown as D, drought; K, K+ deficiency; D*K, drought*K+ deficiency. Data are expressed as Mean ± standard deviation. Bars not sharing a common letter are significantly different (P ≤ 0.01).