Abstract
Nucleolus-associated bodies (NABs) have long been noted in interphase nuclei of a wide variety of plant species. We have recently shown that these bodies consist largely of snRNPs and that they are located on the nucleolar surface in the immediate vicinity of the nucleolar organizer tracks. The present study revealed that, following exposure of roots to KCN, an agent that induces nucleolar segregation, NABs were intimately associated with intranucleolar chromatin. Although immunocytochemical tests with anti-DNA indicated that NABs contained no demonstrable amounts of DNA, our observations nevertheless add further support to the notion that these bodies are somehow related to the nucleolar chromosomes.
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