图3. 干旱对拟南芥根部NO含量及NO合成酶活性和相关基因表达的影响
(A) 干旱胁迫下拟南芥根部NO荧光成像(Bars=100 μm); (B) 干旱对拟南芥根部NO含量的影响; (C) 干旱对拟南芥根部NOS活性的影响; (D) 干旱对拟南芥根部NR活性的影响; (E) 干旱对拟南芥根部AtNOS1表达量的影响; (F) 干旱对拟南芥根部AtNia1表达量的影响; (G) 干旱对拟南芥根部AtNia2表达量的影响。CK: 对照; WT: 野生型; NOS: 一氧化氮合酶; NR: 硝酸还原酶。不同小写字母表示不同株系的不同处理间差异显著(P<0.05)。

Figure 3. Effects of drought stress on NO content, activities and gene expression of NO synthesis enzymes in Arabidopsis roots
(A) NO fluorescence imaging of Arabidopsis roots under drought stress (Bars=100 μm); (B) Effects of drought stress on NO content in Arabidopsis roots; (C) Effects of drought stress on NOS activity in Arabidopsis roots; (D) Effects of drought stress on NR activity in Arabidopsis roots; (E) Effects of drought stress on relative expression level of AtNOS1 in Arabidopsis roots; (F) Effects of drought stress on relative expression level of AtNia1 in Arabidopsis roots; (G) Effects of drought stress on relative expression level of AtNia2 in Arabidopsis roots. CK: Control; WT: Wild type; NOS: Nitric oxide synthase; NR: Nitrate reductase. Different lowercase letters indicate significant differences among different treatments of different lines at P<0.05.