摘要
分析两种豇豆 (Vignaunguiculata)萌发种子 (萌发 3d)和幼苗 (萌发 6d)的多胺氧化酶 (PAO)活性的分布特点 ,结果表明 :种子中PAO活性主要分布在胚芽 ,其次是子叶和胚轴 ,种皮和胚根中无PAO活性 ;幼苗中PAO活性主要集中在幼叶 (含顶芽 ) ,其次是子叶和上胚轴 ,下胚轴和根中检测不到PAO活性。
Distribution of polyamine oxidase(PAO,EC 1.4.3.4)activity was studied in seeds and seedlings of two cowpea cultivars ( Vigna unguiculata cv‘Jingfen No1' and ‘Tianbao No1') germinated in moistened vermiculite with a light/dark cycle of 16 hr (90 μmol cm 2 min 1 )/8 hr at 28℃. No PAO activity was detected in the seeds of either cowpea until germinated for 1.5 d, and then the PAO activity increased quickly. In both cowpea seeds at germination for 3 d, PAO activity was only detectable in the plumula, cotyledon and embryonic axe, and no PAO activity was detected in radicle and seed coat. In both cowpea seedlings at germination for 6 d, PAO activity was only detectable in the primary leaves (containing the shoot apex) , cotyledon and epicotyl, and no PAO activity could be detected in the hypocotyl and roots. The paper discussed the physiological roles of the plant PAO in above pattern of distribution.
出处
《仲恺农业技术学院学报》
2000年第3期1-4,共4页
Journal of Zhongkai Agrotechnical College
基金
广东省自然科学基金资助项目! (970 6 5 5 )
关键词
豇豆
多胺氧化酶
分布
种子
幼苗
cowpea( Vigna unguiculata)
polyamine oxidase
distribution
seeds
seedlings
