1株外生菌根真菌的分离与抗重金属能力测定

摘要

Ectotrophic mycorrhiza fungi anti-heavy metal was isolated from pine in Qingshitan Reservoir (Guilin, Guangxi), and was initially identified as Sclerodermatales, Sclerodermataceae, Scleroderma, Scleroderma flavidum. Tests showed that heavy metals Zn, Cu, Hg, Cd had significant inhibition on growth of Scleroderma flavidum and in which Cd was the strongest inhibitory. At the same time, Scleroderma flavidum had a strong ability of anti-heavy metal, and the tolerance to Zn, Cd is much larger than that to Cu, Hg.%从广西桂林青狮潭水库库区松林中分离得到1株外生菌根真菌,初步鉴定为硬皮马勃目、硬皮马勃科、硬皮马勃属、黄硬皮马勃(Scleroderma flavidum).试验结果表明,重金属Zn、Cu、Hg、Cd 均对Scleroderma flavidum 的生长有显著抑制作用,其中Cd的抑制作用最强.同时,Scleroderma flavidum 具较强的抗重金属能力,且对Zn、Cd的耐性远大于对Cu与Hg 的耐性.