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  • 2018, Vol. 16, No. 4
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  • 2018, Vol. 16, No. 4
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Study of effect of arbuscular mycorrhiza (Glomus intraradices) fungus on wheat under nickel stress

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Date
2018
Author
Heydarian, A.
Tohidi Moghadam, H.R.
Donath, T.W.
Sohrabi, M.
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Abstract
In many regions of the world soils are contaminated with heavy metals and therefore restricted in their use. For instance, the absorption of nickel (Ni) in the tissue of plants increase the plant’s metabolism and cause physiological disorders or even death. Arbuscular mycorrhizal fungi are known to enhance the tolerance of host plants to abiotic and biotic stress. Thus, we investigated the potential of the arbuscular m ycorrhizal fungi Glomus intraradices to mitigate deleterious effects of Ni in wheat. The experiment was conducted using four levels of Ni (0, 60, 120 and 180 mg per kg of soil) and two levels of mycorrhizal fungi application (with and without Glomus intrar adices ). Nickel stress significantly decreased seed number per spike, thousand - seed weight, seed yield per plant, concentration of chlorophyll a and b. At the same time, we found increased catalase (CAT) enzyme activity and dityrosine (DT) treatments. Mycorrhizal fungi application attenuated Ni effects, i.e. fungal presence increased seed number per spike, thousand - seed weight, chlorophyll a and b. Furthermore mycorrhizal fungi application reduce CAT enzyme activity and DT. In general, our results sugge st that mycorrhizal fungi application reduces harmful effects of Ni stress in wheat.
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http://hdl.handle.net/10492/4388
http://dx.doi.org/10.15159/ar.18.167
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  • 2018, Vol. 16, No. 4

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