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Salicylic acid‐enhanced biosynthesis of pharmacologically important lignans and neo lignans in cell suspension culture of Linum ussitatsimum L

机译:水杨酸增强亚麻的细胞悬浮培养中重要药理作用的木脂素和新木脂素的生物合成

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摘要

L. (flax) is a perennial herb with magnitude of medicinal and commercial applications. In the present study, we investigated the effects of salicylic acid (SA) on biosynthesis of lignans (secoisolariciresinol diglucoside (SDG) and lariciresinol diglucoside (LDG)) and neolignans (dehydrodiconiferyl alcohol glucoside (DCG) and guaiacylglycerol‐β‐coniferyl alcohol ether glucoside (GGCG)) in cell cultures of flax. Moderate concentration of SA (50 μM) enhanced biomass accumulation (10.98 g/L dry weight (DW)), total phenolic content (37.81 mg/g DW), and antioxidant potential (87.23%) to two‐fold than their respective controls after 72 h of exposure. However, higher levels of total flavonoid content (5.32 mg/g DW) were noted after 48 h of exposure to 50 μM of SA. HPLC analyses revealed that 50 μM SA, significantly enhanced biosynthesis of SDG (7.95 mg/g DW), LDG (7.52 mg/g DW), DCG (54.90 mg/g DW), and GGCG (16.78 mg/g DW), which was almost 2.7, 1.8, 3.88, and 3.98 fold higher than their respective controls after 72 h of exposure time, respectively. These results indicated that moderate concentrations of SA had significant effects on biosynthesis and productivity of lignans and neolignans in cell culture of .
机译:L.(亚麻)是多年生草本植物,具有药用和商业用途。在本研究中,我们研究了水杨酸(SA)对木脂素(secoisolariciresinol diglucoside(SDG)和lariciresinol diglucoside(LDG))和新木脂素(dehydrodiconiferylanol葡萄糖苷(DCG)和愈创甘油甘油-β-松柏醇醚的生物合成的影响(GGCG))在亚麻的细胞培养物中。中等浓度的SA(50μM)可使生物量积累(10.98 g / L干重(DW)),总酚含量(37.81 mg / g DW)和抗氧化剂潜力(87.23%)分别比对照高两倍暴露72小时但是,暴露于50μM的SA 48小时后,总黄酮含量较高(5.32 mg / g DW)。 HPLC分析表明,50μMSA显着增强了SDG(7.95 mg / g DW),LDG(7.52 mg / g DW),DCG(54.90 mg / g DW)和GGCG(16.78 mg / g DW)的生物合成。在72小时的曝光时间后,它们分别比各自的对照高了近2.7、1.8、3.88和3.98倍。这些结果表明,适度的SA浓度对大豆细胞培养中的木质素和新木质素的生物合成和生产力有显着影响。

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