钕对缺钙油菜膜损伤和过氧化进程的影响  

Effect of Nd(NO_3)_3 on Membrane Damage and Peroxidization Process in Rape during Ca^(2+)-Starvation

作　　者：周晓波[1] 魏幼璋[1] 

机构地区：[1]浙江大学土化系,浙江杭州310029

出　　处：《中国稀土学报》2000年第1期63-66,共4页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金! ( 39670 4 2 2 )资助项目

摘　　要：通过在缺钙条件下对油菜进行水培 ,探讨了Nd对缺钙油菜膜损伤和过氧化进程的影响。3 μmol·L- 1硝酸钕可降低根质膜相对透性和叶片中膜脂过氧化作用产物丙二醛含量 ,提高过氧化氢酶 ,过氧化物酶和超氧化物歧化酶的活性。Nd可减轻油菜缺Ca症状 ,抑制膜的过氧化进程 ,完全营养液中加入硝酸钕也有类似效果。Treated with 3 μmol·L -1 Nd(NO 3) 3 in Ca 2+ deficient solution, the symptom of Ca 2+ starvation was relieved and the peroxidization process in rape was inhibited. It indicates that Nd(NO 3) 3 lowers the root relative permeability and MDA content in leaves, increases CAT, POD, SOD activities in rape. The addition Nd(NO 3) 3 to Hoagland solution shows similar results. The effects of Nd 3+ are similar to Ca 2+ .

关 键 词：钕油菜 过氧化 稀土元素 缺钙 生物膜损伤 

分 类 号：O614.335[理学—无机化学] S565.401[理学—化学]