Volume 17, Issue 63 (Spring 2013)                   jwss 2013, 17(63): 37-46 | Back to browse issues page

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A. Madani, A. Lakzian, GH. Haghnia, R. Khorasani. Contribution of External Hyphae of Arbuscular Mycorrhizal Fungi to Transfer Cadmium, Zinc and Phosphorus to White Clover . jwss 2013; 17 (63) :37-46
URL: http://jstnar.iut.ac.ir/article-1-2540-en.html
, madani.aida@yahoo.com
Abstract:   (12253 Views)
Mycorrhizal fungus colonization of roots may modify plant metal acquisition. In order to study the role of external hyphae of mycorrhizal fungi in metals transferring, the root and hyphal growth zone were separated by 30 µm nylon meshes. Plants were inoculated with G. mosseae and G. intraradices and grown in the root compartment. Six combinations of metals (400 mg of Zn, 25 mg of Cd, 400 mg of Zn + 25 mg of Cd, 50 mg P, 50 mg of P+ 400 mg of Zn + 25 mg of Cd, and no metal kg-1 soil sample) were added to the hyphal compartments. This experiment was carried out as a completely randomized design (CRD) with factorial arrangement in three replications. The results showed that dry shoot weight and phosphorus concentration in mycorrhizal treatments increased significantly compared with non mycorrhizal treatments. of the two fungal species, G. mosseae had more effect on phosphorus concentration in white clover plant. AM fungi increased the Zn concentration in shoot and root of white clover. AM fungi also significantly increased cadmium concentration in root of mycorrhizal treatments compared to non mycorrhizal plants. of the two fungal species, G. intraradices accumulated more cadmium in clover roots. ALL in all the results demonstrated that AM fungi increased phosphorus and Zn transferring to the shoots while cadmium transferring was decreased by stabilizing in the roots.
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Type of Study: Research | Subject: Ggeneral
Received: 2013/06/2 | Accepted: 2013/06/2 | Published: 2013/06/2

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