DNA regions flanking the major Arabidopsis thaliana satellite are principally enriched in Athila retroelement sequences

被引：79

作者：

Pelissier, T ^{[1
]}

Tutois, S ^{[1
]}

Tourmente, S ^{[1
]}

Deragon, JM ^{[1
]}

Picard, G ^{[1
]}

机构：

[1] UNIV CLERMONT FERRAND,BIOMOVE,URA CNRS 1940,F-63177 CLERMONT FERRAND,FRANCE

来源：

GENETICA | 1996年 / 97卷 / 02期

关键词：

Arabidopsis; heterochromatin; retroviral element; satellite DNA; transposon; DROSOPHILA-MELANOGASTER HETEROCHROMATIN; TRANSPOSABLE ELEMENTS; NUCLEOTIDE-SEQUENCE; REPETITIVE SEQUENCES; BETA-HETEROCHROMATIN; ORGANIZATION; GENES; FAMILY; EXPRESSION; CHROMATIN;

D O I：

10.1007/BF00054621

中图分类号：

Q3 [遗传学];

学科分类号：

071007 ; 090102 ;

摘要：

An analysis of Arabidopsis thaliana heterochromatic regions revealed that genomic sequences immediately flanking the major 180 bp satellite are essentially made of middle repetitive sequences and that most of these sequences correspond to defective Athila retroelements. Using YAC and lambda clones, we evaluated the distribution of Athila elements in the Arabidopsis genome and showed that, despite the presence of numerous euchromatic copies, these elements are especially concentrated in or near heterochromatic regions. Sequencing of the various DNA transitions between satellite and Athila repeats provides strong evidence that most of the heterochromatic elements retrotransposed directly into 180 bp satellite clusters.

引用

页码：141 / 151

页数：11

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