Record ID No. |
1409 |
Author(s) |
Paradi I., Berecz B., Halasz K., Bratek Z. , 2003 |
Affiliation |
Department of Plant Physiology, Eotvos Lorand University, Budapest, Hungary. |
Title |
Influence of arbuscular mycorrhiza and cadmium on the polyamine contents of Ri T-DNA transformed Daucus carota L. root cultures |
Source. Vol.(no):Page |
Acta Biologica Szegediensis.47: 31-36p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Systematics |
Sub-subjects |
Cultural Studies |
Host |
Daucus carota |
Organism |
Glomus intraradices |
Country |
Hungary, Europe |
Abstracts |
The effect of arbuscular mycorrhizal (AM) colonization on free polyamine (PA) contents and ratios was studied in vitro by Ri T-DNA transformed root cultures (Daucus carota and Glomus intraradices) under Cd-treatment. The roots were soaked in Cd(NO3)2 solutions at 3x10-6 and 5x10-5 M for 6 hours. Roots were strongly colonized and their Cd-content increased for high Cd-treatment only. In contrast to earlier results, Cd treatment reduced putrescine and spermidine contents of the non-mycorrhizal (NM) Daucus carota roots, whereas that of mycorrhizal (M) roots did not change. The spermine content showed a slight increase in all cases. NM roots always had higher PA ratios. AM symbiosis may have established a more equalized environment for the roots and so decreased the volume of physiological responses induced by stress conditions, which are normally reflected by strong changes in polyamine contents.. |