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Autori: Neagoe Aurora, Virgil Iordache, Hans Bergmann† and Erika Kothe
Editorial: Willey, Journal of Plant Nutrition and Soil Science, 176, p.273-286, 2013.
Arbuscular mycorrhizal fungi (AMF) are integral functioning parts of plant root systems and are widely recognized for enhancing plant growth on severely disturbed sites, including those contaminated with heavy metals. However, the generality of detailed patterns observed for their influence on various metals and oxidative-stress parameters in multiple plant species is not clarified. The goal of this study was to investigate the patterns of metal-stress alleviation by AMF in four plant species. For this purpose, clover, sunflower, mustard, and phacelia were inoculated with Glomus intraradices and compared to noinoculated plants grown under heavy metal–stressed conditions. The study focused on the effect of AMF inoculation on plant biomass, assimilating pigments, total protein, superoxide dismutase and peroxidase activity, lipid peroxidation and As, Cd, Co, Cu, Fe, Mn, P, Pb, U, and Zn contents. As a result of inoculation very different patterns of variation were obtained for concentrations of elements and for biochemical parameters in plants. The particular effect of AMF inoculation on plants was species- and metal-specific, although there was a general enhancement of plant growth.
Cuvinte cheie: clover, sunflower, mustard, phacelia, metals, oxidative stress // clover, sunflower, mustard, phacelia, metals, oxidative stress