Karyotyping of the chromosomes and physical mapping of the 5S rRNA and 18S-26S rRNA gene families in five different species in Capsicum

この論文にアクセスする

この論文をさがす

著者

抄録

Since clear identification of individual chromosomes in <i>Capsicum</i> species was not possible due to the gradient in sizes and similar morphology, <i>in situ</i> hybridization using 5S rDNA and 18S-26S rDNA probes was utilized to karyotype the chromosomes of the five species, <i>Capsicum annuum</i>, <i>C. chinense</i>, <i>C. frutescens</i>, <i>C. baccatum</i>, and <i>C. pubescens</i>. The 5S rDNA located on only one pair of chromosomes in all five species. The 5S rDNA carrying chromosome was designated as chromosome 1 by the synteny relationship with tomato. In two species, <i>C. baccatum</i> and <i>C. pubescens</i>, the 5S rDNA was physically linked with a 18S-26S rDNA locus. The number and chromosomal location of 18S-26S rDNA loci were highly variable among the species. The number of loci was as few as two in <i>C. annuum</i> and as many as 14 in <i>C. baccatum</i>. The chromosomal positions of the 18S-26S loci were in the telomere regions in the corresponding chromosomes and some chromosomes showed hybridization signals in this region of both long and short arms. A pair of acrocentric chromosomes carrying the 18S-26S rDNA locus in the satellite region was found in all five species. The <i>in situ</i> and Southern hybridization patterns of the rDNAs were similar between <i>C. annuum</i> and <i>C. chinense</i>. <i>C. frutescens</i> was similar to <i>C. chinense</i>. <i>C. baccatum</i> and <i>C. pubescens</i> were speculated to be less related to the former three <i>Capsicum</i> species. The variable nature of the 18S-26S rDNA loci in the <i>Capsicum</i> species might provide a good model for rDNA evolution.<br>

収録刊行物

  • Genes & genetic systems  

    Genes & genetic systems 74(4), 149-157, 1999-08 

    The Genetics Society of Japan

参考文献:  28件

参考文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

各種コード

  • NII論文ID(NAID)
    10004718101
  • NII書誌ID(NCID)
    AA11077421
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13417568
  • NDL 記事登録ID
    4922672
  • NDL 雑誌分類
    ZR1(科学技術--生物学)
  • NDL 請求記号
    Z53-W539
  • データ提供元
    CJP書誌  NDL  J-STAGE 
ページトップへ