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Physiological and morphological responses to water stress in Aegilops biuncialis and Triticum aestivum genotypes with differing tolerance to drought.对干旱耐受性不同的节节麦和普通小麦基因型中水分胁迫的生理和形态学响应
Funct Plant Biol. 2004 Dec;31(12):1149-1159. doi: 10.1071/FP03143.
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Satellite DNA in the karyotype evolution of domestic animals--clinical considerations.家畜核型进化中的卫星DNA——临床考量
Cytogenet Genome Res. 2009;126(1-2):12-20. doi: 10.1159/000245903. Epub 2009 Dec 9.
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Wheat-alien metaphase I pairing of individual wheat genomes and D genome chromosomes in interspecific hybrids between Triticum aestivum L. and Aegilops geniculata Roth.普通小麦（Triticum aestivum L.）与弯穗山羊草（Aegilops geniculata Roth）种间杂种中单个小麦基因组和D基因组染色体的小麦-外源中期I配对
Theor Appl Genet. 2009 Sep;119(5):805-13. doi: 10.1007/s00122-009-1090-6. Epub 2009 Jun 26.
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Evolutionary dynamics and sites of illegitimate recombination revealed in the interspersion and sequence junctions of two nonhomologous satellite DNAs in cactophilic Drosophila species.嗜仙人掌果蝇物种中两个非同源卫星DNA的散布和序列连接处揭示的非法重组的进化动力学和位点。
Heredity (Edinb). 2009 May;102(5):453-64. doi: 10.1038/hdy.2009.9. Epub 2009 Mar 4.
5
Detection of intergenomic chromosome rearrangements in irradiated Triticum aestivum--Aegilops biuncialis amphiploids by multicolour genomic in situ hybridization.利用多色基因组原位杂交技术检测经辐照的普通小麦-二芒山羊草双二倍体中的基因组间染色体重排
Genome. 2009 Feb;52(2):156-65. doi: 10.1139/g08-114.
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Comparative genomics and molecular dynamics of DNA repeats in eukaryotes.真核生物中DNA重复序列的比较基因组学与分子动力学
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Repetitive DNA and chromosomal rearrangements: speciation-related events in plant genomes.重复DNA与染色体重排：植物基因组中与物种形成相关的事件
Cytogenet Genome Res. 2008;120(3-4):351-7. doi: 10.1159/000121084. Epub 2008 May 23.
8
Physical organisation of simple sequence repeats (SSRs) in Triticeae: structural, functional and evolutionary implications.小麦族中简单序列重复（SSR）的物理组织：结构、功能及进化意义
Cytogenet Genome Res. 2008;120(3-4):210-9. doi: 10.1159/000121069. Epub 2008 May 22.
9
Genome differentiation in Aegilops. 1. Distribution of highly repetitive DNA sequences on chromosomes of diploid species.小麦族基因组分化。1. 二倍体物种染色体上高度重复 DNA 序列的分布。
Genome. 1996 Apr;39(2):293-306. doi: 10.1139/g96-040.
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Identification of the entire chromosome complement of bread wheat by two-colour FISH.利用双色 FISH 技术鉴定普通小麦的整套染色体。
Genome. 1997 Oct;40(5):589-93. doi: 10.1139/g97-077.

在异源多倍体野生小麦的自然种群中，简单重复序列丰富的染色体区域与基因组间易位断点之间的关联。

Association between simple sequence repeat-rich chromosome regions and intergenomic translocation breakpoints in natural populations of allopolyploid wild wheats.

机构信息

Agricultural Research Institute of the Hungarian Academy of Sciences, H-2462, Martonvásár, POB 19, Hungary.

出版信息

Ann Bot. 2011 Jan;107(1):65-76. doi: 10.1093/aob/mcq215. Epub 2010 Oct 28.

DOI:10.1093/aob/mcq215
PMID:21036694
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3002473/
Abstract

BACKGROUND AND AIMS

Repetitive DNA sequences are thought to be involved in the formation of chromosomal rearrangements. The aim of this study was to analyse the distribution of microsatellite clusters in Aegilops biuncialis and Aegilops geniculata, and its relationship with the intergenomic translocations in these allotetraploid species, wild genetic resources for wheat improvement.

METHODS

The chromosomal localization of (ACG)(n) and (GAA)(n) microsatellite sequences in Ae. biuncialis and Ae. geniculata and in their diploid progenitors Aegilops comosa and Aegilops umbellulata was investigated by sequential in situ hybridization with simple sequence repeat (SSR) probes and repeated DNA probes (pSc119·2, Afa family and pTa71) and by dual-colour genomic in situ hybridization (GISH). Thirty-two Ae. biuncialis and 19 Ae. geniculata accessions were screened by GISH for intergenomic translocations, which were further characterized by fluorescence in situ hybridization and GISH.

KEY RESULTS

Single pericentromeric (ACG)(n) signals were localized on most U and on some M genome chromosomes, whereas strong pericentromeric and several intercalary and telomeric (GAA)(n) sites were observed on the Aegilops chromosomes. Three Ae. biuncialis accessions carried 7U(b)-7M(b) reciprocal translocations and one had a 7U(b)-1M(b) rearrangement, while two Ae. geniculata accessions carried 7U(g)-1M(g) or 5U(g)-5M(g) translocations. Conspicuous (ACG)(n) and/or (GAA)(n) clusters were located near the translocation breakpoints in eight of the ten translocated chromosomes analysed, SSR bands and breakpoints being statistically located at the same chromosomal site in six of them.

CONCLUSIONS

Intergenomic translocation breakpoints are frequently mapped to SSR-rich chromosomal regions in the allopolyploid species examined, suggesting that microsatellite repeated DNA sequences might facilitate the formation of those chromosomal rearrangements. The (ACG)(n) and (GAA)(n) SSR motifs serve as additional chromosome markers for the karyotypic analysis of UM genome Aegilops species.

摘要

背景与目的

重复 DNA 序列被认为参与了染色体重排的形成。本研究旨在分析节节麦和长穗偃麦草中微卫星簇的分布，并分析其与这两种野生小麦遗传资源属间易位之间的关系。

方法

通过使用简单序列重复（SSR）探针和重复 DNA 探针（pSc119·2、Afa 家族和 pTa71）进行顺序原位杂交，以及使用双色基因组原位杂交（GISH），研究了节节麦和长穗偃麦草中（ACG）（n）和（GAA）（n）微卫星序列在其二倍体祖先种粗山羊草和华山新麦草中的染色体定位。通过 GISH 对 32 个节节麦和 19 个长穗偃麦草品系进行了属间易位筛选，并用荧光原位杂交和 GISH 进一步对其进行了鉴定。

结果

单个着丝粒（ACG）（n）信号定位于大多数 U 染色体和一些 M 染色体上，而粗山羊草染色体上则观察到强烈的着丝粒和一些中间及端粒（GAA）（n）位点。3 个节节麦品系携带 7U(b)-7M(b)相互易位，1 个品系携带 7U(b)-1M(b)重排，而 2 个长穗偃麦草品系携带 7U(g)-1M(g)或 5U(g)-5M(g)易位。在所分析的 10 个易位染色体中，有 8 个易位染色体的（ACG）（n）和/或（GAA）（n）簇靠近易位断点，其中 6 个的 SSR 带和断点统计上位于同一染色体位置。

结论

在所研究的异源多倍体物种中，属间易位断点经常定位在富含 SSR 的染色体区域，表明微卫星重复 DNA 序列可能有助于这些染色体重排的形成。（ACG）（n）和（GAA）（n）SSR 基序可作为 UM 基因组粗山羊草属物种核型分析的附加染色体标记。