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生态学杂志 ›› 2005, Vol. ›› Issue (4): 422-427.

• 博士论坛 • 上一篇    下一篇

外生菌根与植物抗重金属胁迫机理

黄艺, 黄志基   

  1. 北京大学环境学院, 北京, 100871
  • 收稿日期:2004-05-31 修回日期:2004-07-30 出版日期:2005-04-10
  • 通讯作者: 黄艺,女,1964年生,博士,副教授.主要从事环境生物学研究,发表论文20余篇.
  • 基金资助:
    国家自然科学基金项目(400211010);广东省自然科学基金资助项目(035018)

Ectomycorrhizae and heavy metals resistance of higher plants

HUANG Yi, HUANG Zhiji   

  1. College of Environmental Science, Peking University, Beijing 100871, China
  • Received:2004-05-31 Revised:2004-07-30 Online:2005-04-10

摘要: 外生菌根是外生菌根真菌和植物营养根形成的共生体,能够增加植物对污染胁迫的抵抗能力。本文综述了20多年来国内外研究外生菌根增加植物抗重金属毒害的成果,指出了外生菌根在植物抗重金属毒害中的积极作用,并概括其抗性的主要机理为:外延菌丝的吸收作用;菌根分泌物的调节与螯合作用;菌根菌套或哈蒂氏网吸收过滤有毒金属;菌根菌套的疏水性作用。在研究外生菌根抗重金属毒害机理的基础上,提出了该领域今后的研究前景。

关键词: 红树林, 生物量, 净初级生产力

Abstract: Ectomycorrhizae have been proved to be able to enhance higher plant to grow in the contaminated area.This paper reviewed achievement of studies on the heavy metal resistance of ectomycorrhizae in the last 20 years,and discussed the positive effect of ectomycorrhizae on the resistance of higher plant to heavy metals attribute to the following mechanisms such as sorption on the external mycelium; exudation of chelating substances and adjustment of fungus slime; filtration and sorption of metals in the hyphal sheath or Hartig net; and hydrophobicity of the hyphal sheath.Some suggestions for future research in this field were put forward based on the mentioned mechanisms.

Key words: Mangrove, Biomass, Net primary productivity

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