Capturing variation in Lens (Fabaceae): development and utility of an exome capture array for lentil.

Ogutcen Ezgi, Ramsay Larissa, von Wettberg Eric, Bett Kirstin. Capturing variation in Lens (Fabaceae): development and utility of an exome capture array for lentil. Applications in Plant Science. 2018.
Publication Year
2018
DOI
10.1002/aps3.1165
URL
https://doi.org/10.1002/aps3.1165

Premise of the Study

Lentil is an important legume crop with reduced genetic diversity caused by domestication bottlenecks. Due to its large and complex genome, tools for reduced representation sequencing are needed. We developed an exome capture array for use in various genetic diversity studies.

Methods

Based on the CDC Redberry draft genome, we developed an exome capture array using multiple sources of transcript resources. The probes were designed to target not only the cultivated lentil, but also wild species. We assessed the utility of the developed method by applying the generated data set to population structure and phylogenetic analyses.

Results

The data set includes 16 wild lentils and 22 cultivar accessions of lentil. Alignment rates were over 90%, and the genic regions were well represented in the capture array. After stringent filtering, 6.5 million high‐quality variants were called, and the data set was used to assess the interspecific relationships within the genus Lens.

Discussion

The developed exome capture array provides large amounts of genomic data to be used in many downstream analyses. The method will have useful applications in marker‐assisted breeding programs aiming to improve the quality of cultivated lentil.