RELATIONSHIP BETWEEN SATELLITE DEOXYRIBONUCLEIC-ACID, RIBOSOMAL RIBONUCLEIC-ACID GENE REDUNDANCY, AND GENOME SIZE IN PLANTS
RELATIONSHIP BETWEEN SATELLITE DEOXYRIBONUCLEIC-ACID, RIBOSOMAL RIBONUCLEIC-ACID GENE REDUNDANCY, AND GENOME SIZE IN PLANTS
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DOI：
10.1104/pp.55.3.496
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发表时间：
1975-01-01
期刊：
影响因子：
7.4
通讯作者：
SINCLAIR, J
中科院分区：
文献类型：
--
作者：
INGLE, J;TIMMIS, JN;SINCLAIR, J
核糖体DNA的浮力密度在有或没有卫星DNA的物种中是相似的，并且在所有被检查的物种中与卫星DNA的浮力密度是可区分的。在甜瓜（Cucumus梅洛）组织中，卫星DNA的百分比与核糖体RNA杂交的百分比不相关。卫星DNA序列似乎并不分散在核糖体RNA的编码序列之间。卫星DNA的存在与高核糖体RNA基因冗余度之间没有相关性，但卫星DNA与小基因组大小之间存在相关性，这导致卫星DNA与核糖体RNA的高百分比杂交之间存在相关性。卫星DNA定义为CsCl离心后的次要组分。
The buoyant density of ribosomal DNA is similar in species with or without satellite DNA, and in all species examined was distinguishable from that of the satellite DNA. In melon tissues (Cucumus melo) the percentage satellite DNA is not correlated with the percentage hybridization to ribosomal RNA. Satellite DNA sequences do not appear to be dispersed between those coding for ribosomal RNA. There is no correlation between the presence of satellite DNA and high ribosomal RNA gene redundancy, but there is a correlation between satellite DNA and small genome size, which results in a correlation between satellite DNA and a high percentage hybridization to ribosomal RNA. Satellite DNAs are defined as minor components after CsCI centrifugation.