EVIDENCE FOR HOMOLOGOUS RECOMBINATION BETWEEN REPEATED SEQUENCES CONTAINING 18S AND 5S RIBOSOMAL-RNA GENES IN WHEAT MITOCHONDRIAL-DNA
EVIDENCE FOR HOMOLOGOUS RECOMBINATION BETWEEN REPEATED SEQUENCES CONTAINING 18S AND 5S RIBOSOMAL-RNA GENES IN WHEAT MITOCHONDRIAL-DNA
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DOI：
10.1002/j.1460-2075.1984.tb01799.x
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发表时间：
1984-01-01
期刊：
影响因子：
11.4
通讯作者：
GRAY, MW
中科院分区：
文献类型：
--
作者：
FALCONET, D;LEJEUNE, B;GRAY, MW
Closely linked genes for 18S and 5S rRNA were located on 4 different cloned SalI restriction fragments of wheat (Triticum aestivum L.) mitochondrial DNA. Restriction analysis revealed that in each of the cloned fragments, the 18S and 5S rRNA genes are contained within the same basic structural unit, R, which is at least 4 kbp [kilobase pair] long. This unit is flanked by sequences designated u (0.8 kbp), v (13.7 kbp), w (0.7 kbp), and y (1.4 kbp), in the orientations v-R-w, v-R-y, u-R-w and u-R-y in the 4 different SalI fragments. The 18S + 5S rRNA genes are located at several distinct sites in the wheat mitochondrial genome. Reciprocal intra- and/or intermolecular recombination between such repeated sequences could promote extensive genomic rearrangement and thus contribute to the physical heterogeneity that is a hallmark of most plant mitochondrial DNA.
