Record ID No. |
574 |
Author(s) |
Malcov R., Gryndler M., Vostka M , 2002 |
Affiliation |
(1)Institute of Botany, Academy of Sciences of the Czech Republic, 252 43 Pruhonice, Czech Republic (2)Institute of Microbiology, Academy of Sciences of the Czech Republic, Vdensk 1083, 142 20 Prague 4, Czech Republic |
Title |
Magnesium ions alleviate the negative effect of manganese on Glomus claroideum BEG23 |
Source. Vol.(no):Page |
Mycorrhiza, 12(3): 125-129p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Soil plant relations |
Sub-subjects |
Heavy Metals |
Host |
Zea mays |
Organism |
Glomus claroideum |
Country |
Czech Republic, Europe |
Abstracts |
The phytotoxicity of excessive levels of manganese (Mn), an essential micronutrient, can be alleviated significantly by a high supply of magnesium (Mg) ions to plants. A similar interaction of these two elements in the development of arbuscular mycorrhizal (AM) fungi has been verified in two experimental systems. In in vitro experiments, an outgrowth of hyphae from excised, surface-disinfected root segments colonised with Glomus claroideum BEG23 was measured after 5 days incubation in liquid media. When only Mn ions were present in the media at higher concentrations (>0.05 mM), the growth of hyphae from root segments was reduced significantly. Addition of magnesium sulphate to the incubation solution reduced the inhibitory effects of Mn on hyphal growth. Alleviation of Mn toxicity by Mg ions observed in in vitro experiments was verified also for the symbiotic association between G. claroideum and maize as a host plant in a hydroponics sand culture experiment. |