Effects of Lanthanum on Root Growth and Senescence of GF_(43) (Prunus domestica) Plantlet in Vitro  

作　　者：宋卫平 顾福根 于佳 沈叶 溪群华 刘佳佳 

机构地区：[1]Life Sciences College, Suzhou University, Suzhou 215006, China

出　　处：《Journal of Rare Earths》2004年第5期696-700,共5页稀土学报（英文版）

基　　金：ProjectsupportedbytheNaturalScienceFoundationofJiangsuProvice (BK2 0 0 2 5 0 1)

摘　　要：The effect and the action mechanism of lanthanum on GF_(43) plantlet in vitro were studied. The results of experiments show that root growth rate and dry weight of GF_(43) by LaCl_3 treatments increase. The activities of antioxidant enzymes in root system such as superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD) apparently enhance. Moreover ·O^-_2 and malond ialdehyde (MDA) contents and cell membrane permeability of GF_(43) are decreased by LaCl_3. The relatively stable membrane structure of cell could also be maintained and the root ageing of GF_(43) plantlet in vitro delays.The effect and the action mechanism of lanthanum on GF_(43) plantlet in vitro were studied. The results of experiments show that root growth rate and dry weight of GF_(43) by LaCl_3 treatments increase. The activities of antioxidant enzymes in root system such as superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD) apparently enhance. Moreover ·O^-_2 and malond ialdehyde (MDA) contents and cell membrane permeability of GF_(43) are decreased by LaCl_3. The relatively stable membrane structure of cell could also be maintained and the root ageing of GF_(43) plantlet in vitro delays.

关 键 词：agricultural biology LaCl_3 GF_(43) plantlet in vitro ROOTING SENESCENCE rare earths 

分 类 号：Q945[生物学—植物学]