纳米硒对棉花的促生与抗病作用  

Effect of Nano Selenium on the Growth Promotion and Disease Resistance of Cotton

作　　者：王雨萌 蒋文明 

机构地区：[1]重庆化工职业学院,制药工程学院与环境与质量检测学院,重庆

出　　处：《植物学研究》2024年第3期280-288,共9页Botanical Research

摘　　要：为了研究纳米硒在植物保护中的作用;本研究利用一株植物内生菌合成纳米硒,并将其用于棉花抗病黄萎病的研究。体外抑菌实验表明,纳米硒对大丽轮枝菌的生长有抑制作用。促生实验表明,亚硒酸钠浓度达到50 mg/L时,植株叶片明显枯萎发黄,根长、茎长、鲜重和干重相较对照组显著降低(p 2O2、MDA、POD的活性随着SeNPs浓度的升高显著降低;这说明棉花在经过SeNPs处理后,受病原菌胁迫程度减弱。因此,SeNPs可以提高植物体内的抗氧化酶活性,从而提高植株对大丽轮枝菌的抗病性。To investigate the role of nano selenium in plant protection, this study utilized a plant endophytic bacterium to synthesize nano sized selenium (SeNPs) and applied it to the study of cotton resistance to Verticillium wilt. In vitro antibacterial experiments have shown that SeNPs have an inhibitory effect on the growth of Verticillium dahlia (V. dahlia). Plant growth promotion experiments have shown that sodium selenite can inhibit the growth and development of cotton. But when the concentration reached 50 mg/L, the leaves of the plant significantly wither and turn yellow. The root length, stem length, fresh weight, and dry weight of the plant were significantly reduced compared to the control group (p 2O2, MDA, and POD significantly decreased with the increase of SeNPs concentration, which indicates that after treatment with SeNPs, the degree of stress on cotton by pathogenic bacteria decreases. Therefore, SeNPs can enhance the activity of antioxidant enzymes in plants, thereby enhancing their resistance to V. dahlia.

关 键 词：纳米硒 植物促生 抗氧化 抗菌 

分 类 号：S43[农业科学—农业昆虫与害虫防治]