Figure 9

HPLC analysis of lignan contents in L. album. The podophyllotoxin, 6-methoxypodophyllotoxin, and secoisolariciresinol content in shoots and roots of L. album at 12 and 48 h. PTOX, Podophyllotoxin; 6-MPTOX, 6-methoxypodophyllotoxin; SECO, Secoisolariciresinol. The treatments are shown as D, drought; K, K+ deficiency; D*K, drought*K+ deficiency and C, control. Data are expressed as mean ± standard deviation. Bars not sharing a common letter are significantly different (P ≤ 0.01).