镉(Cd)污染土壤接种丛枝菌根真菌(Glomus mosseae)对黑麦草生长和光合的影响

›› 2013, Vol. 21 ›› Issue (1): 135-141.

镉(Cd)污染土壤接种丛枝菌根真菌(Glomus mosseae)对黑麦草生长和光合的影响

田野, 张会慧, 孟祥英, 王娟, 胡举伟, 孙广玉

东北林业大学生命科学学院, 黑龙江哈尔滨 150040

收稿日期:2012-08-12 修回日期:2012-11-02 出版日期:2013-02-15 发布日期:2013-02-27
通讯作者: 孙广玉
作者简介:田野(1988-),女,辽宁兴城人,硕士研究生,研究方向为植物生理生态学,E-mail:2012tianye@gmail.com
基金资助:
国家自然科学基金(31070307)(30771746);黑龙江省自然科学基金重点项目(ZD201105);国家科技支撑项目(2011BAD08B02-3)资助

Effects of Arbuscular Mycorrhizal Fungi (Glomus mosseae) on Growth and Photosynthesis Characteristics of Lolium perenne L. under Cd Contaminated Soil

TIAN Ye, ZHANH Hui-hui, MENG Xiang-ying, WANG Juan, HU Ju-wei, SUN Guang-yu

College of Life Science, Northeast Forest University, Harbin, Heilongjiang Province 150040, China

Received:2012-08-12 Revised:2012-11-02 Online:2013-02-15 Published:2013-02-27

摘要/Abstract

摘要： 研究镉(Cd)污染土壤中接种丛枝菌根真菌Glomus mosseae对黑麦草(Lolium porenne L.)生长、根系活力、叶片膜质过氧化程度和叶绿素含量以及光合特性的影响。结果表明:镉污染降低了黑麦草的根系活力和根系生长,叶片丙二醛(MDA)含量和相对电导率增加,叶绿素含量降低。接种Glomus mosseae的黑麦草根系的菌根侵染率达50%~70%,同没有接种Glomus mosseae的黑麦草相比较,镉污染条件下黑麦草的根系活力增强,叶片的叶绿素增加,叶片膜质的过氧化程度减轻。镉污染条件下,Glomus mosseae侵染后的黑麦草叶片光合速率和气孔导度增加,提高了黑麦草的生物生长量。因此,接种Glomus mosseae改善了黑麦草耐镉的生长特性,而且增强了耐镉的生理功能,降低了镉对黑麦草的毒害。

关键词: 黑麦草, 镉, 丛枝菌根真菌, 生长, 光合特性

Abstract: The effects of arbuscular mycorrhizal fungi (Glomus mosseae) on growth, root vigor, cell membrane injury, chlorophyll content and photosynthesis characteristics of Lolium perenne L. were investigated under Cd contaminated soil. Results showed that the root vigor of Lolium perenne L. was increased significantly under Cd contaminated soil which inhibited root growth more than aerial parts. Cd pollution significantly increased MDA content and relative conductivity, whereas decreased chlorophyll content, especially chlorophyll a content. The root vigor of Lolium perenne L. with 50%~70% colonization rate of Glomus mosseae slightly increased compared with no Glomus mosseae infection. The degradation of chlorophyll under Cd contaminated soil, and membrane-lipid peroxidation was alleviated with the influence of colonization. The infection of Glomus mosseae improved stomatal conductance under Cd contaminated soil, and increased the Cd tolerance of photosynthetic apparatus on non stomatal factors in order to promote photosynthetic capacity and growth. Glomus mosseae infection improved the Cd tolerance of Lolium perenne L., and reduced the poisoning effect of Cd pollution.

Key words: Lolium perenne L., Cd, Arbuscular mycorrhizal fungi, Growth, Photosynthesis characteristics

中图分类号:

田野, 张会慧, 孟祥英, 王娟, 胡举伟, 孙广玉. 镉(Cd)污染土壤接种丛枝菌根真菌(Glomus mosseae)对黑麦草生长和光合的影响[J]. , 2013, 21(1): 135-141.

TIAN Ye, ZHANH Hui-hui, MENG Xiang-ying, WANG Juan, HU Ju-wei, SUN Guang-yu. Effects of Arbuscular Mycorrhizal Fungi (Glomus mosseae) on Growth and Photosynthesis Characteristics of Lolium perenne L. under Cd Contaminated Soil[J]. , 2013, 21(1): 135-141.

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