Ty1-copia-retrotransposon behavior in a polyploid cotton

被引：46

作者：

Hanson, RE

Islam-Faridi, MN

Crane, CF

Zwick, MS

Czeschin, DG

Wendel, JF

McKnight, TD

Price, HJ

Stelly, DM ^{[1
]}

机构：

[1] Texas A&M Univ, Dept Soil & Crop Sci, College Stn, TX 77843 USA

[2] Iowa State Univ, Dept Bot, Ames, IA 50011 USA

[3] Texas A&M Univ, Dept Biol, College Stn, TX 77843 USA

来源：

CHROMOSOME RESEARCH | 2000年 / 8卷 / 01期

关键词：

evolution; genome; Gossypium; polyploidization; repetitive element; retrotransposon;

D O I：

10.1023/A:1009239522541

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：

Retrotransposons constitute a ubiquitous and dynamic component of plant genomes. Intragenomic and intergenomic comparisons of related genomes offer potential insights into retrotransposon behavior and genomic effects. Here, we have used fluorescent in-situ hybridization to determine the chromosomal distributions of a Ty1-copia-like retrotransposon in the cotton AD-genome tetraploid Gossypium hirsutum and closely related putative A- and D-genome diploid ancestors. Retrotransposon clone A108 hybridized to all G. hirsutum chromosomes, approximately equal in intensity in the A- and D-subgenomes. Similar results were obtained by hybridization of A108 to the A-genome diploid G. arboreum, whereas no signal was detected on chromosomes of the D-genome diploid G. raimondii. The significance and potential causes of these observations are discussed.

引用

页码：73 / 76

页数：4

共 25 条

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