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生态学杂志 ›› 2005, Vol. ›› Issue (7): 833-836.

• 研究简报 • 上一篇    下一篇

不同有机酸对铅胁迫小麦幼苗的缓解作用

李雪梅1,2, 张利红2, 陶思源1, 何兴元2   

  1. 1. 沈阳师范大学化学与生命科学学院实验中心, 沈阳, 110034;
    2. 中国科学院沈阳应用生态研究所, 沈阳, 110016
  • 收稿日期:2004-09-14 修回日期:2004-11-08 出版日期:2005-07-10
  • 通讯作者: 何兴元
  • 基金资助:
    国家自然科学基金项目(20377043和20337010);沈阳师范大学博士启动基金资助项目(054-554318).

Relieving effects of different organic acids on wheat seedling under lead stress

LI Xuemei1,2, ZHANG Lihong2, TAO Siyuan1, HE Xingyuan 2   

  1. 1. Experimental Center, Institute of Chemical and Life Science, Shenyang Normal University, Shenyang 110034, China;
    2. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
  • Received:2004-09-14 Revised:2004-11-08 Online:2005-07-10

摘要: 研究了在铅胁迫条件下,加入外源有机酸对小麦铅毒害的缓解效应.结果表明,低浓度的草酸和乙酸能增加铅胁迫小麦叶绿素含量,不同程度地提高SOD、CAT、POD活性,降低MDA含量,而高浓度草酸和乙酸及柠檬酸对此则无明显的缓解作用;乙酸处理减少根系活跃吸收面积,柠檬酸能明显提高根系活力.草酸对铅胁迫的缓解效果最明显.

关键词: 玉米生长, 土壤N2O排放, 土壤施氮, 温度

Abstract: Relieving effects of different organic acids on wheat seedling under lead stress were studied in this paper.The results showed that low concentration of oxalic acid and acetic acid could increase the content of chlorophyll,enhance the activities of SOD,CAT and POD,and decrease the content of MDA,while high concentration of oxalic acid,acetic acid and citric acid had no apparent relieving effects.Acetic acid could reduce active absorbing area of roots while citric acid could increase roots activity.Among the tested organic acids,oxalic acid had the strongest relieving effect.

Key words: Maize growth, N2O emission from soil, N application, Temperature

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