Abstract

자연 상태에서 발생한 천마버섯 자실체의 다양한 부위로부터 분리한 조직을 버섯완전배지 및 감자배지에 배양하여 균사생장 속도, 균총 형태, 균사속 형성 정도에 따라 12종류로 구분할 수 있었다. 자실체배양체(fruiting culture isolate; FC)의 균사생장과 균사속은 감자배지보다 버섯완전배지에서 빠르고 잘 형성되었다. 이들을 다시 2차 계대 배양한 결과 버섯완전배지에서 11번 균주가 균총 분리 되면서 다시 분화되어 성장하였다. 균총 분리된 한 쪽의 균총이 12번과 유사하였고 이 12번 균주는 다른 종류와는 전혀 다른 특이한 양상을 나타내었다. 또한 RAPD에 의한 DNA 패턴 분석 결과 자실체 조직배양체는 천마균1호 품종과 동일한 양상을 나타냈으나 12번은 달랐다. 자실체 조직배양체 중에서 기존 천마균1호 품종보다 균사생장과 균사속 형성이 양호한 것을 선발할 수 있었다. 따라서 이들 조직배양체는 새로운 우량 계통으로 이용될 수 있을 것으로 사료된다. The fruiting body of honey mushroom, Armillaria gallica, was collected from Gastrodia elata cultivated fields. Pure cultures were isolated from fruiting body tissue of the mushrooms, and cultured on MCM (mushroom complete medium) or PDA (potato dextrose agar) medium. Then, 12 different types of mycelial growth characteristics such as growth rate, colony morphology and rhizomorph formation were obtained. The vitality of the mycelial growth and rhizomorph formation of the fruiting body culture isolates were better on MCM than PDA, suggesting that the optimal culture medium for A. gallica mycelia was MCM. To observe the feature of colony morphology, the subculture of isolates were incubated on MCM. Consequently, we could find the segregated or differentiated colony morphology from isolate type 11 that was similar morphology to isolate type 12. For phylogenetic analysis of the 12 isolates, RAPD (Random Amplified Polymorphic DNA) were performed. The isolate type 12 was not only shown different band patterns of RAPD variation in other 11 isolates, but also commercial strain known as Chunmagyun No. 1. Among the tissue culture isolates of fruiting, strains with better mycelial growth characteristics than Chunmagyun No. 1 were selected. We expect that the new strain can be substituted to commercial strain Chunmagyun No. 1.

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