The ability of two Leguminous Plants to increase Zinc metal tolerance by Arbuscular mycorrhizal fungi colonization

• A. S Banni

  Botany Department, Faculty of Science, Benghazi University.

  Author

• Salah Hajomer

  Botany Department, Faculty of Science, Benghazi University

  Author

• Y. A Tayeb

  Botany Department, Faculty of Science, Benghazi University

  Author

Pot experiment was carried out in green house at Agriculture Faculty (Saba bacha), Alexandria University. The experiment was done to investigate the role of  arbuscular mycorrhizae (AMF) to increase uptake of zinc (Zn) by some crops. Two species of leguminous soybean (Glycine max. L) and lentil (Lens culinaris. L) were grown in sandy  soil . Zinc was applied as ZnSO₄.7HO₂, in four concentrations (0, 30, 50 and 70 mg/ kg soil). The plants were collected after 60 day from sowing. The results indicating that AMF colonization increased the tested plant resistance to Zinc metal. It also significantly stimulated the form ation of root nodules, either increased the P uptake in all treatments, which might be one of the tolerance mechanisms conferred by AMF. All treatments were compared with the control, Mycorrhizal plants inoculated by G. intraradices shown more accumulation of zinc in roots and large reductions in shoots of the two legumes, indicating that the decreased Zinc metal uptake and growth dilution were induced by AMF treatment, thereby reducing the Zinc metal toxicity to the plants.

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