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자료유형
학술저널
저자정보
Lee, Ji-A (Department of Microbiology and Research Institute of Life Sciences, Gyeongsang National University) Kang, Hyeon-Woo (Department of Microbiology and Research Institute of Life Sciences, Gyeongsang National University) Kim, Sang-Woo (Department of Microbiology and Research Institute of Life Sciences, Gyeongsang National University) Lee, Chang-Yun (Greenpeace Mushroom Co.) Ro, Hyeon-Su (Department of Microbiology and Research Institute of Life Sciences, Gyeongsang National University)
저널정보
한국균학회 Mycobiology Mycobiology 제39권 제4호
발행연도
2011.1
수록면
272 - 277 (6page)

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Chemical mutagenesis of basidiospores of Hypsizygus marmoreus generated new mushroom strains. The basidospores were treated with methanesulfonate methylester, an alkylating agent, to yield 400 mutant monokaryotic mycelia. Twenty fast-growing mycelia were selected and mated each other by hyphal fusion. Fifty out of the 190 matings were successful (mating rate of 26.3%), judged by the formation of clamp connections. The mutant dikaryons were cultivated to investigate their morphological and cultivation characteristics. Mutant strains No. 3 and No. 5 showed 10% and 6% increase in fruiting body production, respectively. Eight mutant strains showed delayed and reduced primordia formation, resulting in the reduced production yield with prolonged cultivation period. The number of the fruiting bodies of mutant No. 31, which displayed reduced primordial formation, was only 15, compared to the parental number of 65. Another interesting phenotype was a fruiting body with a flattened stipe and pileus. Dikaryons generated by mating with the mutant spore No. 14 produced flat fruiting bodies. Further molecular biological studies will provide details of the mechanism. This work shows that the chemical mutagenesis approach is highly utilizable in the development of mushroom strains as well as in the generation of resources for molecular genetic studies.

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