稀土元素钕对油菜超微结构的影响  

The effect of rare-earth element neodymium on ultrastructure of oilseed rape (Brassica napus)

作　　者：魏幼璋[1] 高其康[2] 

机构地区：[1]浙江大学华家池校区土化系,杭州310029 [2]浙江大学华家池校区电镜室,杭州310029

出　　处：《电子显微学报》2000年第2期149-153,共5页Journal of Chinese Electron Microscopy Society

基　　金：国家自然科学基金资助项目 !(396 70 42 2 )

摘　　要：电镜观察表明 :低浓度的钕对完全营养液培养的油菜顶叶叶尖细胞的叶绿体片层结构有明显的改善作用 ,而高浓度的钕会引起细胞结构损坏。适当浓度的钕能对缺钙油菜苗受损的细胞有修复作用 ,这表明钕有部分替代钙的作用。钕对油菜主根根尖细胞的作用与对顶叶叶尖细胞作用类似 ,但对根细胞超微结构影响更为明显。Observation with TEM (transmission electronic microscopy) indicated that relatively low neodymium concentration had the function of improving clloroplost structure of rape terminal leaflet, while higher neodymium concentration damaged cell structures. It showed that proper neodymium concentration treatment alleviate the cell damage caused by Calcium\|deficiency, which suggested that neodymium could replace Calcium to function in cell partially. The effect of neodymium on root tip cell was similar to that on mesophyll cell. The influence of neodymium on cell ultrastructure was more evident in root.

关 键 词：油菜 超微结构 钕 钙 

分 类 号：Q945[生物学—植物学]