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KMID : 0545119970070030161
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Journal of Microbiology and Biotechnology
1997 Volume.7 No. 3 p.161 ~ p.166
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Molecular Characterization of Intergeneric Hybrids between Trichoderma harzianum and Gliocladium virens
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Shin, Pyung Gyun
Ryu, Jin Chang/Yoo, Young Bok/Jeong Won Hwa/Cho, Moo Je
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Abstract
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Nuclei were isolated from the protoplasts of Trichoderma harzianum T95 and treated with colchicine, a polyploid inducer. The nuclei were transferred into the protoplast of multi-auxotrophic Gliocladium virens G88 which cannot grow in minimal medium. The protoplast of G. virens G88 carrying the transferred nuclei were regenerated in a regeneration minimal medium containing 17 ㎍/㎖ of chloroneb as a haploid inducer. Six intergeneric hybrids between G. virens and T. harzianum were isolated from the regeneration minimal medium. The hybrids could be classified into three types according to morphology, those with an isozyme pattern, those with an protein band and those with an randomly amplified polymorphic DNA(RAPD) pattern produced by random primers and repetitive sequences. The first group was identified to be a haploid recombinant, the second group a heterokaryon, and the third appeared to be petite.
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