Record ID No. |
6133 |
Author(s) |
Kanwal S.*, Bano A. and Malik R. N. , 2016 |
Affiliation |
*Environmental Biology and Ecotoxicology Laboratory, Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan. |
Title |
Role of arbuscular mycorrhizal fungi in phytoremediation of heavy metals and effects on growth and biochemical activities of wheat (Triticum aestivum L.) plants in Zn contaminated soils. |
Source. Vol.(no):Page |
African Journal of BIotechnology. 15(20): |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Physiology Pollution |
Sub-subjects |
Heavy Metals |
Host |
Triticum aestivum |
Organism |
Glomus spp. |
Country |
Pakistan |
Abstracts |
The increase of metals pollution in soil is a worldwide problem that affects the health of humans and
environment. The use of green technology such as phytoremediation is one of the environmental friendly techniques, in which plants and other microbes are used to reduce the level of metals contaminants in soil and lower its uptake towards plants tissues. Studies report that a number of cereal crops such as wheat accumulates heavy metals in their tissues at higher concentrations. In the present study, we investigated the effect of arbuscular mycorrhizal fungi (AMF) on wheat plants with the
increase of three different zinc (Zn) concentrations (0, 100, 300 and 900 mgkg-1) in soil. After eight
weeks of pot experiment, roots colonization, shoot and root biomass, growth, heavy metals contents
and other biochemical parameters were assessed. The results indicate mycorrhizal inoculated (M)
plants performed better at moderate Zn concentrations (300 mgkg-1). In AMF associated plants, Zn contents were lower in shoot part of plants as compared to roots. In addition, higher P contents were observed in M treated plants as compared to NM plants. The decrease of nutrient contents, growth and antioxidant enzymatic activities were found at the highest applied Zn concentrations (900 mgkg-1).
Results indicate that AMF inoculum exhibit different tolerance strategies to reduce metals toxicity in
host plants. The effective mycorrhizal symbiosis was observed with wheat plants and can be useful for
phytostabilization of Zn contaminated soils which can play a vital role in the increase of food productivity and safety. |