FINE-STRUCTURE AND EVOLUTION OF THE RDNA INTERGENIC SPACER IN RICE AND OTHER CEREALS

被引：1

作者：

CORDESSE, F ^{[1
]}

COOKE, R ^{[1
]}

TREMOUSAYGUE, D ^{[1
]}

GRELLET, F ^{[1
]}

DELSENY, M ^{[1
]}

机构：

[1] UNIV PERPIGNAN, PHYSIOL & BIOL MOLEC VEGETALES LAB, CNRS, URA 565, F-66860 PERPIGNAN, FRANCE

来源：

JOURNAL OF MOLECULAR EVOLUTION | 1993年 / 36卷 / 04期

关键词：

ORYZA-SATIVA; RIBOSOMAL DNA; RIBOSOMAL RNA; INTERGENIC SPACER; REPEATED SEQUENCE;

D O I：

暂无

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The intergenic spacer of a rice ribosomal RNA gene repeating unit has been completely sequenced. The spacer contains three imperfect, direct repeated regions of 264-253 bp, followed by a related but more highly divergent region. Detailed analysis of the sequence allows the presentation of an evolutionary scenario in which the 264-253-bp repeats are derived from an ancestral 150-bp sequence by deletion and amplification. Comparison of the rice sequence with those of maize, wheat, and rye shows that, despite considerable divergence from the ancestral sequence, several regions have been highly conserved, suggesting that they may play an important role in the structure and/or expression of the ribosomal genes.

引用

页码：369 / 379

页数：11

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