RISS 학술연구정보서비스

검색
다국어 입력

http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.

변환된 중국어를 복사하여 사용하시면 됩니다.

예시)
  • 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
  • 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
닫기
    인기검색어 순위 펼치기

    RISS 인기검색어

      검색결과 좁혀 보기

      선택해제

      오늘 본 자료

      • 오늘 본 자료가 없습니다.
      더보기
      • 무료
      • 기관 내 무료
      • 유료
      • KCI등재

        Transient gene expression and promoter analysis in basidiomycete

        Yoichi Honda,Eiji Tanigawa,Takahito Watanabe,Takashi Watanabe 한국버섯학회 2010 한국버섯학회지 Vol.8 No.4

        Ceriporiopsis subvermispora is a unique white rot fungus degrading plant cell wall lignin without severe loss of cellulose. Recombinant plasmids containing homologous gene expression signals fused to the coding sequence of Escherichia coli hph which encodes for hygromycin phosphotransferase were introduced in protoplasts of wild type C. subvermispora using PEG/CaCl2 protocol. A number of hygromycin B resistant strains were isolated on a screening plate containing 100㎍/ml of hygromycin B: whereas, no colonies were observed when protoplasts were treated with no DNA as a negative control. It was demonstrated that most of the isolates lost their drug resistance during successive cultivations in the presence of the same concentration of hygromycin B, but some of the isolates showed stable drug resistance after five times repeated screening. They did not lose the drug resistance even after the cultivation in the absence of hygromycin B and incorporation of the hph sequence was confirmed by specific amplification of the target sequence in PCR experiments and Southern hybridization analysis. The stable transformation system will make it possible to do molecular genetic analysis, as well as breeding of genetically modified strains, in C. subvermispora. Moreover, it was demonstrated that recombinant constructs with truncated promoter showed reduced number of the drug resistant isolates on the first screening plate, in response with the length of the remaining promoter sequence. These findings indicated that unstable drug resistance observed in these isolates should originate from transient expression of the introducing marker genes, and that a promoter assay system has been developed for the first time in basidiomycete. This system is practically not affected by the positional effect of the integrated recombinant gene in the host chromosome.

      연관 검색어 추천

      이 검색어로 많이 본 자료

      활용도 높은 자료

      해외이동버튼