仿生型信号分子对烟草硝酸盐、亚硝酸盐的抑制作用  

Inhibition Action of Bionics Signal Molecule to Nitrate and Nitrite Contents in Tobacco

作　　者：华煜[1] 林国平 黄文昌 程新胜[1] 

机构地区：[1]中国科学技术大学烟草与健康研究中心,合肥市徽州大道1129号230052 [2]中国烟草白肋烟试验站,武汉市硚口区宝丰路6号430030

出　　处：《烟草科技》2010年第4期51-53,58,共4页Tobacco Science & Technology

基　　金：国家烟草专卖局资助项目"白肋烟优质抗病新品种选育"(110200202004)

摘　　要：硝酸盐、亚硝酸盐是烟草特有亚硝胺(TSNAs)的前体物。用源于取食烟草的寡食性昆虫口腔分泌物的仿生型信号分子(BSM)物质,在不同浓度下,对烤烟和白肋烟打顶后伤口进行涂抹处理,用比色法检测处理株和对照株烟叶中NO3-,NO2-的含量,并分析BSM对烟草NO3-,NO2-的影响。结果表明:BSM物质对烤烟和白肋烟打顶后叶片中NO3-,NO2-有不同程度的抑制作用;BSM处理对中部叶NO3-和NO2-含量影响大于上部叶、对NO3-的抑制作用强于NO2-;在白肋烟上,BSM对NO3-和NO2-含量的抑制程度与剂量有关,BSM的浓度越高,处理株中NO-和NO-含量越低。Nitrate and nitrite are the precursors of TSNAs.The bionics signal molecule（BSM） matter sourced from oral secretion of oligophagous tobacco pests was applied to the topped caulis of flue-cured and burley tobacco at different concentrations. The contents of NO3^- and NO2^- in treated tobacco leaves and the control were analyzed with colorimetry,and the effects of BSM on NO3^- and NO2^- contents were analyzed.The results indicated that： BSM inhibited NO3^- and NO2^- accumulation in flue-cured and burley tobacco leaves after topping to different extents;BSM＇s effects on middle leaves was stronger than on upper leaves,stronger on NO3^- content than on NO2^- content.For burley tobacco,the effects of BSM on NO3^- and NO2^- correlated with the dose,the higher the concentration of BSM,the lower the contents of NO3^- and NO2^- would be.

关 键 词：烟草 信号分子(BSM) NO3- NO2- 抑制作用 

分 类 号：S572.01[农业科学—烟草工业]