钕对金鱼藻生长生理及细胞叶绿体结构的影响  

Effects of Neodymium on physiology and chloroplast ultrastructure of Ceratophyllum demersum

作　　者：胡勤海[1,2] 叶畅[1,2] 叶兆杰[1,2] 胡志强 

机构地区：[1]浙江农业大学环境科学系 [2]中国科学院沈阳应用生态研究所

出　　处：《浙江农业大学学报》1997年第2期175-178,共4页

基　　金：浙江省自然科学基金

摘　　要：研究了稀土元素钕（Ｎｄ）对金鱼藻（Ｃｅｒａｔｏｐｈｙｌｕｍｄｅｍｅｒｓｕｍ）叶绿素总量、抗坏血酸氧化酶、过氧化氢酶、过氧化物酶等生理指标和细胞叶绿体显微结构的影响，以及金鱼藻对钕的吸收富集作用．结果表明，短期内低浓度（２～１０ｍｇ／Ｌ）的钕对金鱼藻的一些生理学指标各有一定的刺激促进作用，但随着处理时间的延长及处理浓度的提高，抑制作用明显加强，并破坏细胞叶绿体结构；Effects of Neodymium on some physiological index and chloroplast ultrastructure of Ceratophyllum demersum were studied, and the accumulation concentration of Neodymium in Ceratophyllum demersum was determined. The results showed that lower concentration of Neodymium (2～10 mg/L) stimulated the chlorophyll content increasing and the activities of ascorbic acid, hydrogen peroxidase, peroxidase of Ceratophyllum demersum at the beginning of test, but restrained them with test time prolonging and as concentration of Neodymium increased, and destroied the ultrastructure of chloroplast. It was also shown that Ceratophyllum demersum are very capable of absorbing and accumulating Neodyumium.

关 键 词：稀土元素 钕 金鱼藻 生理 细胞结构 叶绿体 

分 类 号：Q949.2[生物学—植物学] S143.4[农业科学—肥料学]