Sequencing
SFAF2016%20Meeting%20Guide%20Final%203
SFAF2016%20Meeting%20Guide%20Final%203
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11th Annual <strong>Sequencing</strong>, Finishing, and Analysis in the Future Meeting<br />
PACBIO, DOVETAIL, AND BIONANO TECHNOLOGIES<br />
ENABLE QUALITY PLANT GENOME ASSEMBLIES.<br />
Friday, 3rd June 11:40 La Fonda Ballroom Talk (OS‐8.01)<br />
Thiruvarangan Ramaraj 1 , Diego Fajardo 1 , Karen Moll 1 , Peng Zhou 2 , Peter Tiffin 2 , Jason<br />
Miller 3 , Kevin Silverstein 2 , Nevin Young 4 , Joann Mudge 1<br />
1 National Center for Genome Resources (NCGR), 2 University of Minnesota,<br />
3 J. Craig Venter Institute, 4 University of New Mexico<br />
Next generation sequencing and physical/optical mapping technologies have enabled interrogation<br />
of rapidly evolving genomic regions that generate a high frequency of tandem duplications. In plants,<br />
these regions are important because they control interactions with microbes. For Medicago truncatula,<br />
a nitrogen‐fixing legume, interactions with microbial partners include not only plant defense, but<br />
symbiotic interactions with both nitrogen‐fixing bacteria and fungal mycorrhizae, neither of which<br />
is present in the model plant, Arabidopsis thaliana. Here, we have used long reads (PacBio) to<br />
generate a de novo genome assembly of R108, an important Medicago truncatula accession because<br />
of its ability to be transformed. We have also generated a BioNano map and a Dovetail library for<br />
scaffolding. We’ve used the BioNano and Dovetail data to improve the continuity of the assembly,<br />
generating five different assemblies with different combinations and orderings of these long‐range<br />
technologies. On these data, assembly connectivity increased with applications of BioNano or Dovetail<br />
and even further with their combination. The largest increase was produced having the Dovetail<br />
step precede the BioNano step.<br />
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