✦ LIBER ✦

The status of ribosomal RNA genes during nuclear DNA reversion in flax

✍ Scribed by J. N. Timmis; J. Ingle

Publisher: Springer
Year: 1975
Tongue: English
Weight: 296 KB
Volume: 13
Category: Article
ISSN: 0006-2928
DOI: 10.1007/bf00484920

No coin nor oath required. For personal study only.

✦ Synopsis

Heritable changes in plant weight and nuclear DNA content may be induced in certain varieties of flax by different fertilizer environments. The large stable form (L) has 16% more nuclear DNA that the small stable form (S). In subsequent generations in particular environments the nuclear DNA difference disappears, although the plant weight differences remain, while in other environments both DNA and plant weight differences are maintained. The large stable form has 56-70% more rRNA genes than the small stable form. The majority of this difference in rDNA is maintained in types where the nuclear difference has reverted. It is suggested that the expression of the flax genome may be susceptible to a reduction in the multiplicity of rRNA genes which limits the availability of protein synthetic machinery needed for growth.

📜 SIMILAR VOLUMES

In vitro transcription of the ribosomal

In vitro transcription of the ribosomal RNA genes of E. coli DNA

✍ S�megi, J�nos ;Udvardy, Andor ;Venetianer, P�l 📂 Article 📅 1977 🏛 Springer 🌐 English ⚖ 746 KB

Bacterial ribosomal RNA synthesis was studied in an in vitro system in which the presence of heparin prevented reinitiation of transcription. The number of heparin-resistant binary complexes of RNA-polymerase and E. coli DNA depended strongly on the quality of the template. High-molecular weight DNA

Methylation status of ribosomal RNA gene

Methylation status of ribosomal RNA gene clusters in the flow-sorted human acrocentric chromosomes

✍ Kazuhiko Kawasaki; Shinsei Minoshima; Jun Kudoh; Ryuichi Fukuyama; Nobuyoshi Shi 📂 Article 📅 1992 🏛 Springer-Verlag 🌐 English ⚖ 691 KB

Southern blot analysis of the human acrocentric chromosomes that were flow-sorted from B-lymphoblastoid cell line GM130B revealed that the sensitivity of the ribosomal RNA (rDNA) gene clusters to the restriction enzyme NotI differs among these rDNA-containing chromosomes: the rDNA clusters of Chromo

Molecular Phylogenetic Relationships of

Molecular Phylogenetic Relationships of Pond Frogs Distributed in the Palearctic Region Inferred from DNA Sequences of Mitochondrial 12S Ribosomal RNA and Cytochrome b Genes

✍ Masayuki Sumida; Mitsuaki Ogata; Midori Nishioka 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 89 KB

The evolutionary relationships of pond frogs distributed in the Far East and Europe were investigated by analyses of nucleotide sequences of mitochondrial 12S ribosomal RNA (12S rRNA) and cytochrome b (cyt b) genes. The nucleotide sequences of a 412-bp segment of the 12S rRNA gene and a 534-bp segme