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植物研究 ›› 1999, Vol. 19 ›› Issue (2): 33-38.

• 论文 • 上一篇    下一篇

盐碱胁迫下星星草种子萌发过程中氮代谢的初步研究

李艳波1, 陈月艳2, 孙国荣2, 阎秀峰3   

  1. 1. 哈尔滨师范专科学院生物系, 哈尔滨 150086;
    2. 哈尔滨师范大学生物系, 哈尔滨 150080;
    3. 东北林业大学森林植物生态学开放研究实验室, 哈尔滨 150040
  • 收稿日期:1997-07-14 出版日期:1999-06-15 发布日期:2016-06-14

PRELIMINARY STUDY ON NITROGENOUS METABOLISM OF GERMINATING PUCCINELLIA TENUIFLORA SEEDS UNDER ALKALINE SALT STRESS

Li Yan-bo1, Chen Yue-yan2, Sun Guo-rong2, Yan Xiu-feng3   

  1. 1. Departemnt of Biology, Harbin Teachers, School, Harbin 150086;
    2. Department of Biology, Harbin Normal University, Harbin 150080;
    3. Open Research Laboratory of Forest Plant Ecology, Northeast Forestry University, Harbin 150040
  • Received:1997-07-14 Online:1999-06-15 Published:2016-06-14

摘要: 对不同浓度Na2CO3胁迫下星星草种子萌发过程中可溶性蛋白质、游离氨基酸及游离脯氨酸含量的变化进行了研究。结果表明:无盐胁迫下,伴随种子的萌发过程,可溶性蛋白质、游离氨基酸含量不断增加,脯氨酸含量在种子萌发前期增加较快,随后趋于稳定;Na2CO3胁迫下,星星草种子萌发过程中,与无盐胁迫相比,可溶性蛋白质与游离氨基酸含量降低,并与Na3CO3浓度呈极显著的负相关关系。脯氨酸含量与总游离氨基酸含量呈现不同的变化趋势。种子萌发后期,不同浓度Na2CO3胁迫下无盐胁迫相比,脯氨酸含量均有不同程度的增加。

关键词: 星星草, 萌发, 可溶性蛋白质, 游离氨基酸, 脯氨酸

Abstract: Soluble protein, free animo acid and free proline content of germinating Puccinellia tenuiflora seeds under different concentration of Na2CO3 stress was studied. The results indicates: in the salt free condition, soluble protein and free amino acid content increased gradually along with the germination process, proline content increased rapidly in earlier period and then keep stable; soluble protein and free amino acid content decreased under Na2CO3 stress compared with that in Na2CO3 free condition and had significant negative correlation with Na2CO3 concentration. Proline content showed a different tendency with total free amino and increased on different level under different concentration of Na2CO3 stress compared with that in Na2CO3 free condition.

Key words: Puccinellia tenuiflora, Germination, Soluble protein, Free amino acid, Proline