A Efficient Selection of Hybrids Following Intergeneric Transfer of Nuclei from Trichoderma harzianum into Gliocladium virens Protoplasts

Gliocladium virens와 Trichoderma harzianum의 속간(屬間) 핵(核) 전이체(轉移體)의 효율적(效率的) 선발(選拔)

To obtain hybrids producing antagonisms and plant growth promoting effects by intergeneric nuclei transfer, the nuclei were isolated from the protoplasts of Trichoderma harzianum T95 and treated with colchicine. The nuclei were tranferred into protoplast of multi-auxotrophic Gliocladium virens G88 which cannot grow in minimal medium. The nuclei tranferred into protoplasts of G. virens G88 were selected on the regeneration minimal medium containing chloroneb as a haploid inducer. Low transfer frequency of 0.08% was observed with three chemical treatment, however no segregants were found in the intergeneric nuclei transfer. The various types of hybrids with different morphology were detected when different concentration of chloroneb were treated. These morphologies were classified as parental, recombinant and petite type.

길항작용 뿐만 아니라 식물생장촉진효과가 있는 속간 핵 전이체를 선발하기 위하여 T. harzianum의 원형질체로부터 핵을 분리한 다음 $15\:{\mu}g/ml$의 콜히친을 처리하였다. 최소배지에서 성장하지 않은 영양요구성 균주인 G. virens G88의 원형질체에 콜히친이 처리된 핵을 전이하여 chloroneb이 함유된 재생용 최소배지에서 선발하였다. 전이효율은 0.08%로서 콜히친 및 chloroneb을 처리하지 않은 것보다는 낮지만 segregants는 전혀 나타나지 않았다. 또한 chloroneb 농도에 따라 다양한 형태의 전이체가 선발되었으며 재조합형, 양친형, 그리고 petite형 등으로 동정되었다.