Gruzova M N, Batalova F M
Ontogenez. 1979;10(4):323-31.
Changes in the nuclear structures and their participation in RNA synthesis in the growing oocytes were followed in two species of beetles Blaps lethifera and Gnaptor spinimanus. In the oocytes of both the species, the chromosomes join into the karyosphere following the short-term lampbrush stage. A large capsule appears around the karayosphere which consists of the fibrous substance, granules and karyosphere nucleoli. The latter form in the karyosphere and contain RNP but they are not true nucleoli since they do not include 3H-uridine. RNA synthesis on the chromosomes, active at the lampbrush stage, falls markedly following their joining into the karyosphere. The oocyte nuclei of these beetles are, thus, characterized by the absence of RNA synthesizing nucleolar system and, as compared with the trophocytes, by the low level of RNA synthesis on the chromosomes.
在两种甲虫（致黑扁谷盗和刺脊扁谷盗）中，对生长中的卵母细胞的核结构变化及其在RNA合成中的参与情况进行了跟踪研究。在这两种甲虫的卵母细胞中，染色体在短期灯刷期后会聚集形成核球。在核球周围会出现一个大的囊，它由纤维物质、颗粒和核球核仁组成。后者在核球中形成，含有核糖核蛋白，但它们不是真正的核仁，因为它们不包含3H-尿苷。在灯刷期活跃的染色体上的RNA合成，在它们聚集形成核球后显著下降。因此，这些甲虫的卵母细胞核的特征是缺乏RNA合成核仁系统，并且与滋养细胞相比，染色体上的RNA合成水平较低。
