Tropical Plant Biology

, Volume 5, Issue 4, pp 261–276

Genomic Resources for Evolutionary Studies in the Large, Diverse, Tropical Genus, Begonia

  • Adrian Christopher Brennan
  • Stephen Bridgett
  • Mobina Shaukat Ali
  • Nicola Harrison
  • Andrew Matthews
  • Jaume Pellicer
  • Alex David Twyford
  • Catherine Anne Kidner
Article

DOI: 10.1007/s12042-012-9109-6

Cite this article as:
Brennan, A.C., Bridgett, S., Shaukat Ali, M. et al. Tropical Plant Biol. (2012) 5: 261. doi:10.1007/s12042-012-9109-6

Abstract

Begonia is one of the ten largest angiosperm genera with over 1,500 species found throughout the tropics. To use this group as a model for the evolution of diversity in tropical herbaceous plants, we have produced three species transcriptomes, physical genome size measures, and two backcross genetic maps. We chose to focus on two Central American species, B. conchifolia and B. plebeja, and one SE Asian species, B. venusta, allowing us to pose questions at widely different evolutionary scales within the genus. We used next generation sequencing of cDNA libraries to produce annotated transcriptome databases for each of the three species. Though Begonia is functionally diploid, transcriptome analysis suggested a genome duplication occurred at or near the base of the Begonia clade. The genetic maps were built from first generation backcrosses in both directions between B. plebeja and B.conchifolia using 105 SNP markers in genes known to regulate development that were identified from the transcriptomes and the map bulked out with 226 AFLP loci. The genetic maps had 14 distinct linkage groups each and mean marker densities of between 3.6 and 5.8 cM providing between 96 and 99 % genomic coverage within 10 cM. We measured genome size 1C value of 0.60 and 0.63 pg for B. conchifolia and B. plebeja corresponding to recombination rates of between 441 and 451 Kb per cM in the genetic maps. Altogether, these new data represent a powerful new set of molecular genetic tools for evolutionary study in the genus Begonia.

Keywords

Begonia Genetic map Transcriptome Tropical diversity Genome duplication 

Supplementary material

12042_2012_9109_MOESM1_ESM.docx (13 kb)
Supplementary note 1AFLP protocol and primers (DOCX 13 kb)
12042_2012_9109_MOESM2_ESM.xls (82 kb)
Supplementary table 1Mapping details (XLS 82 kb)
12042_2012_9109_MOESM3_ESM.docx (17 kb)
Supplementary table 2Mapping details (DOCX 16.9 KB)
12042_2012_9109_Fig8_ESM.jpg (199 kb)
Supplementary figure 1

GO terms for tri-scriptome contigs (JPEG 199 kb)

12042_2012_9109_MOESM4_ESM.tif (210 kb)
High resolution image(TIFF 209 kb)

Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  • Adrian Christopher Brennan
    • 1
    • 7
  • Stephen Bridgett
    • 2
  • Mobina Shaukat Ali
    • 3
    • 7
  • Nicola Harrison
    • 3
    • 4
    • 7
  • Andrew Matthews
    • 5
  • Jaume Pellicer
    • 6
  • Alex David Twyford
    • 3
    • 7
  • Catherine Anne Kidner
    • 3
    • 7
  1. 1.Estación Biológica de Doñana (EBD-CSIC)SevillaSpain
  2. 2.GenepoolUniversity of EdinburghEdinburghUK
  3. 3.Royal Botanic Garden EdinburghEdinburghUK
  4. 4.East Malling ResearchKentUK
  5. 5.Queen Mary, University of LondonLondonUK
  6. 6.Royal Botanic Gardens, KewKewUK
  7. 7.Institute of Molecular Plant SciencesUniversity of EdinburghEdinburghUK

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