Record ID No. |
1210 |
Author(s) |
Chen SH, Tibbett M , 2007 |
Affiliation |
Tibbett, M, Univ Western Australia, Ctr Land Rehabil, Sch Earth & Geog Sci, Fac Nat & Agr Sci, 35 Stirling Highway, Crawley, WA 6009, Australia |
Title |
Phosphate supply and arsenate toxicity in ectomycorrhizal fungi |
Source. Vol.(no):Page |
JOURNAL OF BASIC MICROBIOLOGY. 47(4):358-362p. |
Categories |
Ectomycorrhiza |
Subjects |
Soil plant relations |
Sub-subjects |
Soil toxicity |
Host |
EcM |
Organism |
Hebeloma crustuliniforme, Sufflus variegatus, Cenococcum geophilum |
Country |
Australia, Oceania |
Abstracts |
Three species of ectomycorrhizal fungi (Hebeloma crustuliniforme, Sufflus variegatus and Cenococcum geophilum) were grown in axenic culture amended with range of AsO43- concentration under three different PO43- regimes. The fungi exhibited different growth responses to AsO43- that varied with PO43- concentration. Suillus variegatus showed the greatest sensitivity to AsO43-, with growth almost completely inhibited in the presence of AsO43- under the lower two PO43- treatments. Under the highest PO43- treatment however, growth was enhanced and S. variegatus was able to persist at AsO43- concentrations of up to 4 mM. Hebeloma crustuliniforme also showed high sensitivity to AsO43- especially at low PO43- concentration. The two higher PO43- treatments had an ameliorating effect on AsO43- toxicity in H. crustuliniforme. This demonstrates the ability of PO43- toxicity to alleviate AsO43-. The response from S. variegatus and H. crustuliniforme, both basidiomycetes, was in contrast to the ascomycete C. geophilum. This fungus demonstrated tolerance to AsO43- when grown in culture solution and PO43- did not have an ameliorating effect on AsO43- toxicity in C. geophilum. |