Cytological evidence for somatic diploidization in dikaryotic cells ofArmillariella mellea |
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Authors: | Kari Korhonen Dr. Veikko Hintikka |
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Affiliation: | 1. Finnish Forest Research Institute, Helsinki, Unioninkatu 40 A, SF-00170, Helsinki 17, Finland
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Abstract: | Dikaryotic hyphae isolated from basidiocarps ofArmillariella mellea are unstable in aseptic culture and change into monokaryotic hypae. During monokaryotization the nuclei of a dikaryon fuse and fusion nucleus immediately divides resulting in two uninucleate cells, from which the monokaryotic mycelium originates. Similar fusion of two nuclei takes place in matings of compatible singlespore isolates. It is concluded that the resulting monokaryotic mycelium is diploid. |
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