Národní úložiště šedé literatury Nalezeno 3 záznamů.  Hledání trvalo 0.00 vteřin. 
Genetic and epigenetic acpects of sex determination
Janoušek, Bohuslav ; Hodurková, Jaromíra ; Žlůvová, Jitka ; Lengerová, Martina ; Hobza, Roman ; Nix, Tomáš ; Vyskot, Boris
The article concentrates on the latest knowledge concerning the role of epigenetic mechanisms in sex determination in model dioecious species Silene latifolia. Results suggest that the locus suppressing development of female organs in male plants is hypersensitive to the action of agents influencing level of DNA methylation (5-azacytidine) and histone acetylation (trichostatin A). According to the results obtained via inter-specific hybridisation and the ability of the smut Ustilago violacea to activate development of male organs in female plants, it can be deduced that there is a locus suppressing male organ development in standard female plants. Function of this locus is not influenced by the drugs mentioned above.
DNA methylation and histone acetylation studies on angiosperm plant pollen
Janoušek, Bohuslav ; Žlůvová, Jitka ; Vyskot, Boris
The immunohistochemical studies showed that vegetative nucleus of pollen of Lilium longiflorum is DNA-hypermethylated and histone-hypoacetylated in comparison with generative nucleus. This status could represent an adaptation for the long term survival of pollen grain. Different DNA methylation and histone acetylation patterns were observed in the ephemeric spring species Gagea lutea

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