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Position: Home > Articles > Phyto-Toxicity of Selenium on Plants Journal of Agro-Environment Science 2002,21 (06) 17-19

硒对植物的毒害作用

作  者:
台培东;李培军
单  位:
中国科学院应用生态研究所
关键词:
硒;ALA;ABA;6BA;毒害作用;植物
摘  要:
采用室内培养的方法,研究了硒对小麦、黄瓜等植物的毒害作用。结果表明,低浓度的Na2SeO3能够促进植物体内叶绿素前体物质ALA(δ-aminolevalinicacid)的合成,有利于植物的生长发育;但浓度较高时(0.1mmol)会导致植物抗逆境反应物质ABA的增加,抑制ALA的合成,影响植物的正常生长发育;浓度达到1.0mmol时,ABA含量开始下降,植物出现毒害症状。同时也发现,外源6BA对硒的毒害有明显的拮抗作用。
译  名:
Phyto-Toxicity of Selenium on Plants
作  者:
TAI Pei dong, LI Pei jun(Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110015, China)
关键词:
selenium; ALA; ABA; 6BA; phyto-toxicity; Plants
摘  要:
It has been discovered that Na2SeO3 at low concentration can promote the biosynthesis of ALA (d-aminolevalinic acid), a precursor of chlorophyll in plants, which is beneficial to plant growth. But at high concentration, it can lead to an increase of the stress-resistance substance ABA, and inhibit ALA biosynthesis, which influence plant growth negatively. When the concentration is 1.0 mmol, the content of ABA begins to decrease, and some phyto-toxic symptom appears. It is also found that exotic 6BA can significantly antagonize the toxic effects of selenium on the plants studied.

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