Centromeric behaviour in wheat with high and low homoeologous chromosomal pairing

被引：43

作者：

AragonAlcaide, L ^{[1
]}

Reader, S ^{[1
]}

Miller, T ^{[1
]}

Moore, G ^{[1
]}

机构：

[1] JOHN INNES CTR,NORWICH NR4 7UH,NORFOLK,ENGLAND

来源：

CHROMOSOMA | 1997年 / 106卷 / 05期

关键词：

D O I：

10.1007/s004120050254

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：

Control of homoeologous chromosomal pairing in hexaploid wheat stems from a balance between a number of suppressor and promoter genes. This study used centromeric behaviour as a tool to investigate the mechanism. Fluorescent in situ hybridization employing centromeric and telomeric sequences as probes was applied to pollen mother cells of wheat and wheat/alien hybrids having different pairing gene combinations. It showed: association of centromeres during pre-meiotic interphase; decondensation of centromeric structure; sister chromatid disjunction of univalent chromosomes in homoeologous pairing situations at anaphase I; and centromeric stretching between univalent sister chromatids in wheat/rye hybrids deficient for pairing genes. The implications of these results are discussed.

引用

页码：327 / 333

页数：7

共 32 条

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