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Ectomycorrhizal protection of Pinus sylvestris against copper toxicity by Katia K. Van Tichelen; Jan V. Colpaert; Jaco Vangronsveld is a Agricultural and Biological Sciences article available to read on EtoBox.

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## Summary Change in the copper (Cu) sensitivity of __Pinus sylvestris__ is presented, in response to the ectomycorrhizal fungi, __Suillus bovinus__ and __Thelephora terrestris__ , common mycobionts on metal contaminated sites. Seedlings grown under phosphorus (P) limitation were exposed to a range of Cu concentrations. Plant and fungal development, P nutrition, sorption of Cu on roots and external mycelia as well as transfer of Cu to shoots were assessed. Root growth and P nutrition were severely inhibited in nonmycorrhizal pines at elevated Cu compared with mycorrhizal plants. Excess Cu had little effect on the development of mycorrhizal roots and mycelia. __Thelephora terrestris__ was less sensitive to Cu stress than __S. bovinus__ . The extraradical mycelium of __S. bovinus__ retained large amounts of Cu. However, binding of Cu in fungal tissue was not a prerequisite for low Cu sensitivity since __T. terrestris__ absorbed considerably less Cu that __S. bovinus__ . Both ectomycorrhizal fungi protect __P. sylvestris__ against Cu toxicity; a benefit that was not due to a metal dilution effect. The mechanisms of mycorrhizal amelioration of Cu toxicity are probably diverse and speci

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Author

Katia K. Van Tichelen; Jan V. Colpaert; Jaco Vangronsveld

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Cambridge University Press (CUP); Wiley (ISSN 0028-646X)

Published

2001

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)