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Cytophotometric studies of the nuclear cycle of Sphaeromyxa elegini



Cytophotometric studies of the nuclear cycle of Sphaeromyxa elegini



Tsitologiia 17(2): 200-205



The cytophotometric investigation of DNA content in the nuclei of Myxosporidia Sphaeromyxa elegini Dogiel 1948 was made. It was found that not only nuclei of sporoplasm but also capsulogenic nuclei are haploid. The fact makes us leave apart, as far as these species are concerned, the scheme of nucl eic cycle according to which all somatic nuclei are diploid. It seems possible that two nuclei of sporoplasm as well as two capsulogenic nuclei are the four products of two-step meiosis, but lacking the data on DNA content in valvogenic nuclei we cannot be sure of this. It spite of some peculiarities in the distribution according to DNA content it seems that sporoblasts nuclei cna be considered as diploid at all the stages investigated. The vegetative nuclei are polyploid (tetraploid as usual).

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Accession: 039733572

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PMID: 807002


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