Purkayastha R P, Mitra A K
Department of Botany, University of Calcutta, India.
Indian J Exp Biol. 1992 Dec;30(12):1184-7.
Uptake of a few metals by V. volvacea was determined during submerged growth of the organism in sublethal concentration of each metal salt. The uptake of Pb2+ and Hg2+ was 5 and 5.23 micrograms g-1 respectively while that of Cu2+ was 500 micrograms g-1 under experimental conditions. Treatment of spawned substrate separately with different metal salts showed maximum and minimum uptake of Pb2+ (100 micrograms g-1) and Cd2+ (2.93 micrograms g-1) respectively by sporocarps. All metal salts at test concentrations reduced biological efficiency of sporocarp production but markedly by Co2+. Cd2+ and Co2+ were highly toxic to mycelia and sporocarps respectively. The uptake of Cu2+ by mycelia and Pb2+ by sporocarps were highest among the five metals tested. Metal toxicity, tolerance and uptake capacity of V. volvacea differ considerably with concentration of metal ions.
在该生物体于每种金属盐的亚致死浓度下进行 submerged 生长期间，测定了草菇对几种金属的吸收情况。在实验条件下，Pb2+ 和 Hg2+ 的吸收量分别为 5 和 5.23 微克/克，而 Cu2+ 的吸收量为 500 微克/克。用不同金属盐分别处理已接种的基质，结果表明子实体对 Pb2+（100 微克/克）和 Cd2+（2.93 微克/克）的吸收量分别达到最大和最小。所有测试浓度的金属盐均降低了子实体生产的生物学效率，但 Co2+ 的影响尤为显著。Cd2+ 和 Co2+ 分别对子实体和菌丝体具有高毒性。在所测试的五种金属中，菌丝体对 Cu2+ 的吸收以及子实体对 Pb2+ 的吸收最高。草菇对金属的毒性、耐受性和吸收能力会因金属离子浓度的不同而有很大差异。
