Journal
EUROPEAN JOURNAL OF SOIL BIOLOGY
Volume 46, Issue 5, Pages 306-311Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ejsobi.2010.05.006
Keywords
Arbuscular mycorrhiza; Lead contaminate; Oxidative stress response; Transmission electron microscope (TEM)
Categories
Funding
- National Natural Science Foundation of China [30630054]
- Program for Changjiang Scholars and Innovative Research Team in University of China [IRT0748]
Ask authors/readers for more resources
In this work, a greenhouse experiment, arranged in a randomized block design 2 x 6 factorial with six replicates, was conducted to estimate the effect of inoculation with arbuscular mycorrhizal fungi (AMF) on lead uptake, location and stress attenuation in mycorrhizal Zea mays L seedlings. Treatments were the mycorrhizal inoculation (+M) or non-mycorrhizal inoculation (-M) and six lead concentrations (0, 50, 100, 200, 500 and 1000 mu g/g) to soil. The results showed that AM fungal inoculation could attenuate the oxidative stress of lead to Z. mays seedlings. The higher height, basal diameter and biomass of seedlings were found in mycorrhizal Z. mays seedlings growing in the soil with increasing lead concentrations. Moreover, superoxide dismutase (SOD) activity was higher than that of non-inoculated seedlings. AMF increased accumulation of lead in the root system. In the presence of 200, 500 and 1000 mu g/g lead, there were higher lead concentrations in roots of mycorrhizal seedlings than in non-mycorrhizal seedlings. Lead was identified to dominantly deposit in the hyphal wall, the hyphal inner chambers, the hyphal inner-chamber membranes and the vacuole inner-chambers membrane. It is, therefore, hypothesized that lead stress can be decreased through the AM fungal cell. The ability of arbuscular mycorrhiza immobilizing lead can alleviate the phytotoxicity of lead to Z. mays seedlings. Crown Copyright (C) 2010 Published by Elsevier Masson SAS. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available