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

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

Content Provider	Springer Nature Link
Author	Brennan, Adrian Christopher Bridgett, Stephen Shaukat Ali, Mobina Harrison, Nicola Matthews, Andrew Pellicer, Jaume Twyford, Alex David Kidner, Catherine Anne
Copyright Year	2012
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.
Starting Page	261
Ending Page	276
Page Count	16
File Format	PDF
ISSN	19359756
Journal	Tropical Plant Biology
Volume Number	5
Issue Number	4
e-ISSN	19359764
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-10-02
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Begonia Genetic map Transcriptome Tropical diversity Genome duplication Plant Sciences Plant Genetics & Genomics Plant Breeding/Biotechnology Plant Ecology Transgenics
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science

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