Isolation and Characterization of $A{\alpha}$ mating locus from Schizophyllum commune

치마버섯(Schizophyllum commune)으로부터 $A{\alpha}$ mating locus의 분리 및 특성

  • Park, Dong-Chul (Dept. of Food & Nutrition, Yeungnam University) ;
  • Novotny, Charles P. (Department of Microbiology, University of Vermont) ;
  • Ullich, Robert C. (Department of Botany, University of Vermont) ;
  • Lee, Kap-Duk (Dept. of Chemistry, Dongguk University) ;
  • Lee, Kap-Rang (Dept. of Food & Nutrition, Yeungnam University)
  • 박동철 (영남대학교 식품영양학과) ;
  • ;
  • ;
  • 이갑득 (동국대학교 화학과) ;
  • 이갑랑 (영남대학교 식품영양학과)
  • Published : 1994.09.01

Abstract

This study was carried out to isolate and characterize $A{\alpha}$ mating locus controlling fruiting body formation directly in the Basidiomycete Schzophyllum commune growing in the North America. Total numbers of genomic library of S. commune UVM1-34 was about $2{\times}10^4$ cells. About 90% library was appeared to have about 35 kb inserted genome DNA in cosmid pTC20 vector. 6 clones were proved to have positive signal to probes within Z and Y region in colony and southern hybridization. In the mating activity test, all the 6 positive clones were appeared to have $A{\alpha}3$ mating activity although they had two different restriction patterns. pSC13 containing 5.7 Kb PstI-fragment of UVM 1-34 $A{\alpha}3$ allele showed about 50% clamp cell formation indicating mating activity when cotransformation was done together with cosmid pTC20.

본 연구는 고등균류중 담자균류에 속하는 치마버섯에 있어 자실체 형성을 직접적으로 조절하는 mating locus의 분리 및 특성을 규명하고자 하였다. 북미 자생의 치마버섯 UVM 1-34 균주로부터 $A{\alpha}3$ allele 분리를 위하여 만든 genomic library의 전체 숫자는 약 $2{\times}10^4$ cells로서 이중 약 90%가 약 35kb의 inserted DNA를 가진 것으로 나타났으며, colony 및 southern hybridization을 통해 얻은 6개의 clone 모두가 mating activity를 나타내었다. 이 중에서 1개 clone을 선정하여 남미자생의 UVM 1-71 $A{\alpha}3$ allele의 Z, Y region을 포함하는 5.7kb의 단편을 pBluescript ll KS(+)에 subcloning 시켜 trp1 gene 함유의 pTC20 cosmid와 함께 cotransformation 시킨 결과 약 50%의 clamp cell 형성을 보임으로서 이 clone이 mating activity를 가지는 것으로 나타났다.

Keywords