Exchange of nuclei between dikaryons in Coprinus lagopus
نویسندگان
چکیده
منابع مشابه
Dark dependence of meiosis at elevated temperatures in the basidiomycete Coprinus lagopus.
Under continuous-light regimen Coprinus lagopus can enter and complete meiosis at 25 C, but is unable to do so at 35 C. The temperature-sensitive and the dark-dependent period is 10 hr before karyogamy. It is conjectured that the basidia are programmed for the initiation of meiosis during that 10-hr period.
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Meiosis within fruiting bodies of Coprinus lagopus Fr. is closely synchronized. This conveniently facilitates joint lightand electron-microscope observations. Before nuclear fusion the chromatin appears diffuse in the light microscope; after nuclear fusion individual chromosomes can be recognized. In the electron micrographs the chromatin of pre-fusion and early fusion nuclei cannot be recogniz...
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The specific activity of Coprinus lagopus pyruvate kinase is high under conditions of glycolysis but low under conditions of gluconeogenesis. Only a single form of the enzyme was detectable, the properties of which resemble in a number of respects those of the allosteric forms of pyruvate kinase. These properties include co-operative interactions with phosphoenolpyruvate (PEP), ATP and fructose...
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Optimal conditions, defined by the use of a known auxotrophic strain, are described for the mutagenesis of Coprinus Zagopus oidia by N-methyl-N’nitro-N-nitrosoguanidine (NTG), which is a very effective mutagen for bacteria and yeast. The oidia were best treated in phosphate buffer (PH 6.8) with a concentration of 15 pg. NTG/ml. for about 70 min. The yield of auxotrophs was considerably less tha...
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ژورنال
عنوان ژورنال: Acta Societatis Botanicorum Poloniae
سال: 2015
ISSN: 2083-9480
DOI: 10.5586/asbp.1961.034