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应用生态学报 ›› 1996, Vol. 7 ›› Issue (2): 155-158.

• 研究论文 • 上一篇    下一篇

NaCl胁迫下羊草幼苗的生理反应及外源ABA的缓解效应

王萍, 殷立娟, 李建东   

  1. 东北师范大学国家草地生态工程实验室, 长春130024
  • 收稿日期:1994-09-12 修回日期:1995-09-20 出版日期:1996-04-25 发布日期:1996-04-25
  • 基金资助:

    国家自然科学基金资助项目

Physiological response of Aneurolepidium chinense seedlings on NaCl stress and mitigation effect of external ABA on it

Wang Ping, Yin Lijuan, Li Ji,ong   

  1. National Laboratory of Grassland Ecological Engineering, Northeast Normal University, Changchun 130024
  • Received:1994-09-12 Revised:1995-09-20 Online:1996-04-25 Published:1996-04-25

摘要: 对NaCl胁迫下羊草(Aneurolepidium chinense)的生长、生理和代谢变化的研究表明,在Na+胁迫下,羊草幼苗生长受抑,叶片细胞膜相对透性增大,体内脯氨酸累积增加,无机Na+含量增多.叶绿素含量减少.外源ABA处理可促进羊草对K+吸收,抑制Na+吸收,减轻Na+毒害,增强膜稳定性、光合能力和渗透调节能力,并提高羊草生长代谢活性和叶绿素含量.

关键词: NaCl胁迫, 生理反应, ABA处理, 羊草, 分子营养标记, 共生珊瑚, 异养营养

Abstract: Studies on the growth and metabolism of Aneurolepidium chinense seedlings show that under NaCl stress, their growth is inhibited, while the relative permeability of leaf cell membrane is increased, which induces the accumulation of inorganic Na+ in leaf. The leaf content of proline is increased, but that of chlorophyll is decreased. External ABA can promote the uptake of K+ by A.chinense,but inhibit the uptake of Na+, weaken the toxicity of Na+, enhance the stability of leaf cell membrane and the photosynthetic capacity and permeability regulation ability of leaf, and increase the activity of plant growth and metabolism and the content of chlorophyll.

Key words: NaCl stress, Physiological response, ABA treatment, Aneurolepidium chinense, symbiotic coral, heterotrophic nutrition, molecular nutrition markers