Molecular Biology Reports

, Volume 45, Issue 2, pp 109–118 | Cite as

Location of low copy genes in chromosomes of Brachiaria spp.

  • Thaís Furtado Nani
  • James C. Schnable
  • Jacob D. Washburn
  • Patrice Albert
  • Welison Andrade Pereira
  • Fausto Souza Sobrinho
  • James A. Birchler
  • Vânia Helena Techio
Original Article


Repetitive DNA sequences have been widely used in cytogenetic analyses. The use of gene sequences with a low-copy-number, however, is little explored especially in plants. To date, the karyotype details in Brachiaria spp. are limited to the location of rDNA sites. The challenge lies in developing new probes based on incomplete sequencing data for the genus or complete sequencing of related species, since there are no model species with a sequenced genome in Brachiaria spp. The present study aimed at the physical location of conserved genes in chromosomes of Brachiaria ruziziensis, Brachiaria brizantha, and Brachiaria decumbens using RNAseq data, as well as sequences of Setaria italica and Sorghum bicolor through the fluorescent in situ hybridization technique. Five out of approximately 90 selected sequences generated clusters in the chromosomes of the species of Brachiaria studied. We identified genes in synteny with 5S and 45S rDNA sites, which contributed to the identification of chromosome pairs carrying these genes. In some cases, the species of Brachiaria evaluated had syntenic segments conserved across the chromosomes. The use of genomic sequencing data is essential for the enhancement of cytogenetic analyses.


Forage grasses Single-copy genes FISH Molecular cytogenetics Urochloa 



The authors are thankful to Dr. Ryan Douglas at University of Missouri for helping in designing the centromeric retrotransposons of maize 1 probe (CRM1), and to the Brazilian agencies of research support as Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG), and the program “Science without Borders” of the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES).

Supplementary material

11033_2018_4144_MOESM1_ESM.docx (144 kb)
Supplementary material 1 (DOCX 143 KB)


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Copyright information

© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  • Thaís Furtado Nani
    • 1
  • James C. Schnable
    • 2
  • Jacob D. Washburn
    • 3
  • Patrice Albert
    • 3
  • Welison Andrade Pereira
    • 1
  • Fausto Souza Sobrinho
    • 4
  • James A. Birchler
    • 3
  • Vânia Helena Techio
    • 1
  1. 1.Department of BiologyFederal University of LavrasLavrasBrazil
  2. 2.University of Nebraska LincolnLincolnUSA
  3. 3.Division of Biological SciencesUniversity of MissouriColumbiaUSA
  4. 4.Empresa Brasileira de Pesquisa Agropecuária (Embrapa), Embrapa Gado de Leite (CNPGL)Juiz de ForaBrazil

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