金属离子（镉、铅、锌和锑）对菌根真菌体外生物量生产的毒性相互作用。

Toxic interactions of metal ions (Cd , Pb , Zn and Sb ) on in vitro biomass production of ectomycorrhizal fungi.

作者信息

Hartley Jeanette, Cairney John W G, Sanders Francis E, Meharg Andrew A

机构信息

Institute of Terrestrial Ecology, Monks Wood, Huntingdon, Cambridgeshire, PE17 2LS, UK.

Department of Biology, University of Leeds, Leeds, LS2 9JT, UK.

出版信息

New Phytol. 1997 Nov;137(3):551-562. doi: 10.1046/j.1469-8137.1997.00835.x.

DOI:10.1046/j.1469-8137.1997.00835.x

PMID:33863068

Abstract

A number of ectomycorrhizal (ECM) fungi, from sites uncontaminated by toxic metals, were investigated to determine their sensitivity to Cd , Pb , Zn and Sb , measured as an inhibition of fungal biomass production, Isolates were grown in liquid media amended with the metals, Individually (over a range of concentrations) and in combination (at single concentrations) to determine any significant interactions between the metals. Significant interspecific variation in sensitivity to Cd and Zn was recorded, while Pb and Sb individually had little effect. The presence of Pb and Sb in the media did however, amcliorate Cd and Zn toxicity in some circumstances. Interactions between Cd and Zn were investigated further over a range of concentrations. Zn was found to significantly ameliorate the toxicity of Cd to three of the four isolates tested. The influence of Zn varied between ECM species and with the concentrations of metals tested.

摘要

对一些来自未受有毒金属污染地点的外生菌根（ECM）真菌进行了研究，以确定它们对镉、铅、锌和锑的敏感性，通过抑制真菌生物量生产来衡量。将分离菌株在添加了这些金属的液体培养基中培养，单独培养（在一系列浓度范围内）和组合培养（在单一浓度下），以确定这些金属之间是否存在任何显著的相互作用。记录到对镉和锌的敏感性存在显著的种间差异，而铅和锑单独作用时影响较小。然而，培养基中铅和锑的存在在某些情况下确实减轻了镉和锌的毒性。在一系列浓度范围内进一步研究了镉和锌之间的相互作用。发现锌能显著减轻镉对所测试的四种分离菌株中三种的毒性。锌的影响因ECM物种不同以及所测试的金属浓度而异。