Metal uptake by mycelia during submerged growth and by sporocarps of an edible fungus Volvariella volvacea.
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.
Purkayastha
R P
RP
Department of Botany, University of Calcutta, India.
Mitra
A K
AK
D000363:Agaricales / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism*; D002104:Cadmium / Q000378:metabolism; D019187:Cadmium Compounds; D003035:Cobalt / Q000378:metabolism; D003300:Copper / Q000378:metabolism; D019327:Copper Sulfate; D005502:Food; D006801:Humans; D007854:Lead / Q000378:metabolism; D008627:Mercuric Chloride / Q000378:metabolism; D008670:Metals / Q000378:metabolism* / Q000494:pharmacology; D013172:Spores, Fungal / Q000187:drug effects / Q000378:metabolism; D013431:Sulfates
D019187:Cadmium Compounds; D008670:Metals; D013431:Sulfates; D002104:Cadmium; D007854:Lead; D003035:Cobalt; D008627:Mercuric Chloride; D003300:Copper; C037123:cadmium sulfate; C032722:lead sulfate; C026305:cobalt sulfate; D019327:Copper Sulfate