Record ID No. |
1803 |
Author(s) |
Turnau, K., Anielska, T., Ryszka, P., Gawronski, S., Ostachowicz, B., Jurkiewicz, A , 2008 |
Affiliation |
Jagiellonian Univ, Inst Environm Sci, Ul Gronostajowa 7, PL-30387 Krakow, POLAND |
Title |
Establishment of arbuscular mycorrhizal plants originating from xerothermic grasslands on heavy metal rich industrial wastes-new solution for waste revegetation |
Source. Vol.(no):Page |
Plant and Soil.305(1-2):267-280p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Biochemistry |
Sub-subjects |
Miscellaneous |
Organism |
n.a. |
Country |
POLAND, Europe |
Abstracts |
Industrial waste substrata, rich in heavy metals, are poorly suited for plant
growth. Efforts are made to establish an appropriate plant cover to reduce erosion and further
contamination. Grasses are the usual solution, as they grow fast, thrive on poor substrata and
have well-developed root systems. Some of them are also highly dependent on mycorrhizal symbiosis
that supports their growth especially on poor and polluted soils. However, the commercially
available grasses often meet a lack of well established mycorrhiza on the site and the introduced
plant populations dramatically decrease with time, despite large financial input including
covering the substratum with soil and intensive watering. The aim of this paper was to select
proper plants together with mycorrhizal fungi that could accelerate the establishment of the
vegetation and improve its diversity under these extreme conditions, minimizing the financial
costs of the reclamation (no use of soil layering and watering). The experiments were carried out
under field and laboratory conditions. The plant seeds used originated from dry calcareous
grasslands. The seeds were germinated under field conditions or in pots filled with soil
supplemented with substratum from the industrial wastes. The seedlings were inoculated with AM
fungi and introduced on the field plots a few weeks after germination. The inoculum consisted of
either crude inoculum harvested from the dry calcareous grasslands or strains originating from
polluted areas. Plants colonized by mycorrhizal fungi established well in the experimental plots.
The results suggest that inocula from dry calcareous grasslands are potentially useful in
revegetation of industrial wastes. Although in several cases the photosynthetic activity of
plants was lower than at the natural sites, almost all plants survived and formed seeds. In all
experiments the plant vitality was estimated on the basis of chlorophyll a fluorescence and was
useful to show differences between waste substrata, inocula and coexisting plant species. The
interactions between mycorrhizal and non-mycorrhizal plants were studied under greenhouse
conditions and at least no negative effect of this coexistence was found. |