桢楠种子萌发过程中丙二醛和氧自由基的变化  

Changes of Contents of MDA, ROS and SOD during Seed Germination of Phoebe zhennan

作　　者：孙雁霞[1] 罗建勋[2] 龙汉利[2] 辜云杰[2] 邬晓勇[1] 

机构地区：[1]成都大学生物产业学院,四川成都610106 [2]四川省林业科学研究院林业研究所,四川成都610081

出　　处：《浙江林业科技》2013年第3期1-4,共4页Journal of Zhejiang Forestry Science and Technology

基　　金：林业公益性行业科研专项"四川地震灾区灾后植被恢复及可持续发展关键技术研究与示范"(201104109)

摘　　要：对桢楠(Phoebe zhennan)种子在萌发过程中丙二醛(MDA)和氧自由基(ROS)含量以及超氧化物歧化酶(SOD)活性进行了测定,以了解这些生理指标在种子萌发过程中的变化趋势。结果表明:SOD活性在种子发芽过程中呈上升趋势,当发芽完全后出现下降,之后趋于平缓;MDA和ROS的含量变化则相反,从种子吸胀开始到开始发芽,一直处于下降趋势,而在后期有上升趋势,并趋于平缓,这说明在桢楠种子萌发过程中SOD发挥了重要的作用,降低膜脂氧化程度,促进种子发芽。Determinations were conducted on content of malonicaldehyde（MDA）,oxygen free radicals（ROS） and superoxide dismutase（SOD） activity during the process of germination of Phoebe zhennan seeds.Results showed that the activity of SOD increased with germination,and stabled after germination,while the content of MDA and ROS decreased first and increased later.The determinations concluded that SOD played an important role in reducing the degree of membrane lipid oxidation and promoted seed germination.

关 键 词：桢楠 种子萌发 丙二醛 氧自由基 超氧化物歧化酶 

分 类 号：S722.1[农业科学—林木遗传育种]