Gross chromosome rearrangements are occurring in an accession of the grass Lolium rigidum

被引：45

作者：

Thomas, HM ^{[1
]}

Harper, JA ^{[1
]}

Morgan, WG ^{[1
]}

机构：

[1] AFRC, Inst Grassland & Environm Res, Aberystwyth SY23 3EB, Dyfed, Wales

来源：

CHROMOSOME RESEARCH | 2001年 / 9卷 / 07期

关键词：

chromosome rearrangement; FISH; grass; mitosis; translocation;

D O I：

10.1023/A:1012499303514

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：

Chromosome structure was analysed at mitosis in root tip meristems of eight genotypes of Lolium rigidum. FISH revealed changed positions in the rDNA sites indicating extensive chromosome rearrangements; indeed no two genotypes were the same. In one genotype, there were differences between cells within individual root tips. The changed positions of the rDNA sites appear to be reflections of chromosome translocations and this was confirmed by the presence of quadrivalents at metaphase I of meiosis. Possible mechanisms are discussed for this exceptional level of chromosome instability.

引用

页码：585 / 590

页数：6

共 17 条

[1] PHYSICAL MAPPING OF 5S RDNA REVEALS A NEW LOCUS ON 3R AND UNEXPECTED COMPLEXITY IN A RYE TRANSLOCATION USED IN CHROMOSOME MAPPING [J].

ALONSOBLANCO, C ;

PENDAS, AM ;

GARCIASUAREZ, R ;

ROCA, A ;

GOICOECHEA, PG ;

GIRALDEZ, R .

CHROMOSOMA, 1994, 103 (05) :331-337

[2] Genome differentiation in Aegilops .2. Physical mapping of 5S and 18S-26S ribosomal RNA gene families in diploid species [J].

Badaeva, ED ;

Friebe, B ;

Gill, BS .

GENOME, 1996, 39 (06) :1150-1158

[3] Identification of different chromatin classes in wheat using in situ hybridization with simple sequence repeat oligonucleotides [J].

Cuadrado, A ;

Schwarzacher, T ;

Jouve, N .

THEORETICAL AND APPLIED GENETICS, 2000, 101 (5-6) :711-717

[4] ABOUT MAIZE TRANSPOSABLE ELEMENTS AND DEVELOPMENT [J].

FEDOROFF, NV .

CELL, 1989, 56 (02) :181-191

[5]

JAING J, 1994, CHROMOSOMA, V103, P179

[6] CHROMOSOME ALTERATIONS IN TISSUE-CULTURE CELLS OF ALLIUM-FISTULOSUM [J].

JOACHIMIAK, A ;

ILNICKI, T ;

KOWALSKA, A ;

PRZYWARA, L .

GENETICA, 1995, 96 (03) :191-198

[7]

Morgan W. G., 2000, Cytologia (Tokyo), V65, P173, DOI 10.1508/cytologia.65.173

[8] EXTREME CHROMOSOMAL HETEROGENEITY IN A SMALL-ISLAND POPULATION OF RUMEX-ACETOSA [J].

PARKER, JS ;

WILBY, AS .

HEREDITY, 1989, 62 :133-140

[9]

Rieger R., 1976, GLOSSARY GENETICS CY

[10] A CHROMOSOME REARRANGEMENT SUGGESTS THAT DONOR AND RECIPIENT SITES ARE ASSOCIATED DURING TAM3 TRANSPOSITION IN ANTIRRHINUM-MAJUS [J].

ROBBINS, TP ;

CARPENTER, R ;

COEN, ES .

EMBO JOURNAL, 1989, 8 (01) :5-13

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