Beridze T
Biochim Biophys Acta. 1975 Jul 7;395(3):274-9. doi: 10.1016/0005-2787(75)90197-5.
The distribution of nuclear DNAs of nine species of the genus Brassica in CsCl density gradients was investigated. The amount of satellite DNA with buoyant density of 1.704 g - cm-minus3 varies widely between the species. The satellite component is completely absent in B. oleracea; in B. nigra its amount reaches 37%, and in the other species it occupies an intermediate position. The absence of satellite DNA in B. oleracea was demonstrated by equilibrium centrifugation using a Cs2SO4 density gradient, containing Hg2+.
对芸苔属9个物种的核DNA在氯化铯密度梯度中的分布进行了研究。浮力密度为1.704 g - cm⁻³的卫星DNA数量在不同物种间差异很大。甘蓝型油菜中完全没有卫星DNA；在黑芥中其数量达到37%，而在其他物种中则处于中间位置。通过使用含有Hg²⁺的硫酸铯密度梯度进行平衡离心，证明了甘蓝型油菜中不存在卫星DNA。
