Document Detail


A modified glass bead compartment cultivation system for studies on nutrient and trace metal uptake by arbuscular mycorrhiza.
MedLine Citation:
PMID:  11237297     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A modified glass bead compartment cultivation system is described in which glass beads continue to be used in the hyphal compartment but are replaced by coarse river sand in the compartments for host plant roots and mycorrhizal hyphae. Arbuscular mycorrhizal (AM) associations were established using two host plant species, maize (Zea mays L.) and red clover (Trifolium pratense L.) and two AM fungi, Glomus mosseae and G. versiforme. When the standard and modified cultivation systems were compared, the new method yielded much more fungal tissue in the hyphal compartment. Using G. versiforme as the fungal symbiont, up to 30 mg of fungal dry matter (DM) was recovered from the hyphal compartment of mycorrhizal maize and about 6 mg from red clover. Multi-element analysis was conducted on samples of host plant roots and shoots and on harvested fungal biomass. Concentrations of P, Cu and Zn were much higher in the fungal biomass than in the roots or shoots of the host plants but fungal concentrations of K, Ca, Mg, Fe and Mn were similar to or lower than those in the plants. There were also significant differences in nutrient concentrations between the two AM fungi and these may be related to differences in their proportions of extraradical mycelium to spores. The high affinity of the fungal mycelium for Zn was very striking and is discussed in relation to the potential use of arbuscular mycorrhiza in the phytoremediation of Zn-polluted soils.
Authors:
B Chen; P Christie; X Li
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Chemosphere     Volume:  42     ISSN:  0045-6535     ISO Abbreviation:  Chemosphere     Publication Date:  2001 Jan 
Date Detail:
Created Date:  2001-03-09     Completed Date:  2001-04-19     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0320657     Medline TA:  Chemosphere     Country:  England    
Other Details:
Languages:  eng     Pagination:  185-92     Citation Subset:  IM    
Affiliation:
College of Agricultural Resources and Environmental Sciences, China Agricultural University, Beijing, People's Republic of China.
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MeSH Terms
Descriptor/Qualifier:
Biomass
Fabaceae / microbiology
Fungi / metabolism*
Glass
Metals, Heavy / metabolism*
Microspheres
Mycology / methods*
Plants, Medicinal
Trace Elements / metabolism*
Zea mays / microbiology
Chemical
Reg. No./Substance:
0/Metals, Heavy; 0/Trace Elements

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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