---

作 者 ：仪慧兰,李红孩,孟紫强

期 刊 ：生态学报 2004年 24卷 2期 页码：368~371

关键词：SO2衍生物；亚硫酸氢钠；蚕豆；微核；遗传损伤；

Keywords:SO_2 derivatives, sodium bisulfite, Vicia faba, micronucleus, genetic damage,

摘 要 ：以蚕豆为材料 ,研究 SO2 体内衍生物 -亚硫酸钠与亚硫酸氢钠混合液 (3:1)对根尖细胞的遗传毒效应。结果表明 :0 .0 5～2 .0 0 mmol/ L的 SO2 衍生物处理可诱发两品种蚕豆根尖中的微核细胞明显增加 ;不同浓度 (0 .0 5～ 15 .0 0 mmol/ L ) SO2 衍生物处理 12、2 4、36 h后 ,根尖微核细胞率是对照组的 2 .5～ 5 .0倍 ,显著高于对照组。在一定浓度范围内 ,蚕豆根尖细胞微核率与SO2 衍生物浓度之间具有正的线性相关。研究结果表明 ,SO2 衍生物能够破坏蚕豆根尖细胞的遗传稳定性。

Abstract:The previous studies showed that sulfur dioxide (SO_2) caused visible foliar damage such as chlorosis and necrosis, injured photosynthetic process and influenced the activities of enzymes for scavenging reactive oxygen species (ROS) in plant cells. However, concerning the genotoxic effect of SO_2 in plants, there is rather scantly information. For this reason, the Vicia root-micronucleus (MCN) assay was selected to assess for DNA aberration induced by the derivatives of SO_2, a mixture of sodium bisulfite a...

---