Some factors effecting mycelial growth of Pholiota aurivella (Batsch: Fr.) Kummer
1990
Takabatake, K.(Toyama-ken. Forestry and Forest Products Research Center, Imizu (Japan))
Some factors having an effect on mycelial growth of Pholiota aurivella in culture were investigated. The results are summarized as follows: 1) The minimum, maximum and optimum temperatures for the mycelial growth were 5degC, 31.5degC and 23-27degC, respectively. The suitable moisture content of the sawdust-rice bran medium for mycelial growth was 60-80%. The suitable and optimum initial pH were between pH 5.4-7.1 with a mean of about pH 6.5. 2) The mycelial growth in the liquid culture indicated that the dried weight increased rapidly after incubation and decreased slowly after it reached its maximum. The pH became lower as the mycelial weight was increased. Thereafter, the pH was increased slightly to pH 5.2-5.4. 3) Among the various carbon sources which were tested, mannose and glucose were utilized most effectively for mycelial growth. Peptone and casamino acid as the organic nitrogen sources gave the best results among the nitrogen sources tested. 4) The optimum concentrations of KH2PO4, MgSO4.7H2O, CaCl2.2H2O for the mycelial growth were 0.05%, 0.02% and 0.01%, respectively. The absence of Znsup(2+) and Fesup(2+) in the basal medium allow remarkable mycelial growth. An addition of riboflabin, inositol and thiamine to the basal medium promoted the mycelial growth.
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