Factors Affecting the Genetic Stability of Non-parental Type Segregants Derived from Fusants between Aspergillus oryzae and Aspergillus niger(Microbiology & Fermentation Industry)
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概要
- 論文の詳細を見る
Factors affecting the genetic stability of cycloheximide-kabicidin resistant segregants as non-parental type segregants generated from fusants between cycloheximide 500μg/ml resistant strains derived from A. oryzae IFO 5239 and kabicidin 240μg/ml resistant segregants derived from A. niger IFO 4407 were investigated. There were two types of cycloheximide-kabicidin resistant segregants. One type was the heterokaryons and the other type contained fused nuclei. Almost all colonies were unstable heterokaryons, and balanced heterokaryons were not seen. This was considered to be caused by the difference of growth rates between parental strains although A. oryzae are multinuclear by nature. It was suspected that the difference of growth rates between two strains in colonies were caused by the decrease in medium pH owing to higher acid production of A. niger.
- 社団法人日本農芸化学会の論文
- 1990-11-23
著者
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Toyama H
Minamikyushu Univ. Miyazaki Jpn
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Toyama Hideo
Department Of Fermentation Technology Osaka University
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Toyama Nobuo
Department Of Food Technology Faculty Of Horiculture Minamikyushu University
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- Nuclear Abnormality of Conidia Induced by Colchicine in Trichoderma reesei QM 9414(Microbiology & Fermentation Industry)
- Factors Affecting the Genetic Stability of Non-parental Type Segregants Derived from Fusants between Aspergillus oryzae and Aspergillus niger(Microbiology & Fermentation Industry)