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http://dx.doi.org/10.4489/KJM.2008.36.2.172

Effect of Heavy Metals on Mycelial Growth of Color Mutants at Pleurotus ostreatus  

Lee, Kang-Hyo (Mushroom Research Division, National Academy of Agricultural Science, RDA)
Seok, Soon-Ja (National Agrobiodiversity Center, National Academy of Agricultural Science, RDA)
Weon, Hang-Yeon (Mushroom Research Division, National Academy of Agricultural Science, RDA)
Kim, Seung-Hwan (Mushroom Research Division, National Academy of Agricultural Science, RDA)
Kim, Wan-Gyu (Agricultural Microbiology Division, National Academy of Agricultural Science, RDA)
Sung, Jae-Mo (Department of Agricultural Biology, Kangwon National University)
Publication Information
The Korean Journal of Mycology / v.36, no.2, 2008 , pp. 172-177 More about this Journal
Abstract
Mycelial growth of Pleurotus ostreatus isolates was examined on PDA media added with heavy metals to reveal effects of heavy metals on mycelial growth of the fungus. Cd and Cu strongly inhibited mycelial growth of three isolates of fungus tested. However, addition of $2{\sim}10\;mM$ Pb to growing media of white color mutant of fungus resulted in increase of the fungal growth rate. Addition of 2 mM Cr to the media resulted in increase of growth rate of the white color mutant and the dark color mutant of fungus. Mycelial growth rate of the white color mutant was relatively better than the other isolates on media added with Cr, Pb, Cu, or Mn, respectly. Tolerance of the white color mutans to heavy metals was higher than that of the black color mutant. It is suggested that tolerance of the white color mutant to heavy metals was not controled by color-related substance of the fungus.
Keywords
Color mutants; Heavy metals; Pleurotus ostreatus; Tolerance;
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