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Research Project: CURATION AND DEVELOPMENT OF THE SOYBEAN BREEDER'S TOOLBOX AND ITS INTEGRATION WITH OTHER PLANT GENOME DATABASES

Location: Corn Insects and Crop Genetics Research

Title: Draft genome sequence of kabuli chickpea (Cicer arietinum): genetic structure and breeding constraints for crop improvement

Authors
item Varshney, Rajeev -
item Song, Chi -
item Saxena, Rachit -
item Azam, Sarwar -
item Yu, Sheng -
item Sharpe, Andrew -
item Cannon, Steven
item Rosen, Benjamin -
item Tar'an, Bunyamin -
item Millan, Teresa -

Submitted to: Nature Genetics
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: December 21, 2012
Publication Date: January 27, 2013
Citation: Varshney, R.K., Song, C., Saxena, R.K., Azam, S., Yu, S., Sharpe, A.G., Cannon, S.B., Rosen, B., Tar'An, B., Millan, T. 2013. Draft genome sequence of kabuli chickpea (Cicer arietinum): genetic structure and breeding constraints for crop improvement. Nature Genetics. DOI:10.1038/nbt.2491.

Interpretive Summary: Chickpea is the world's second most important grain legume crop (after soybean), accounting for a significant proportion of human dietary protein for many people and playing a critical role in food security in developing countries. This research reports the sequence of the genome (the full set of DNA instruction) for a variety of chickpea that is widely grown in North America, as well as partial genome sequences for 90 other cultivated and wild chickpea varieties. This work provides chickpea breeders with information that can be used to more efficiently breed varieties that are resistant to diseases and environmental stresses, and to improve qualities such as nutrition and yield.

Technical Abstract: Chickpea (Cicer arietinum) is the world’s second most important grain legume crop, accounting for a significant proportion of human dietary protein and playing a critical role in food security in developing countries. We report the sequence of the ~738 Mb kabuli (CDC Frontier) chickpea genome, which combined with re-sequencing of 90 cultivated and wild genotypes from 10 chickpea grown countries comprise a resource for molecular breeding, and provide insight into genome diversity and breeding history. The current assembly contains an estimated 28,269 genes. We identify genome regions with low overall genetic differentiation, proposed targets of breeding-associated genetic sweeps. We also identify regions of recently elevated nucleotide diversity, proposed targets of breeding-associated balancing selection. These genome intervals contain candidate genes for agronomic traits, including those distinguishing the two market classes of cultivated chickpea, as well as genes for disease resistance. This report portends a fundamental shift in strategies for chickpea improvement.

   

 
Project Team
Grant, David
Abel, Craig
Cannon, Steven
Nelson, Rex
 
Publications
   Publications
 
Related National Programs
  Plant Genetic Resources, Genomics and Genetic Improvement (301)
 
Related Projects
   DEVELOPMENT OF PROTOCOLS FOR EFFICIENT SOYBEAN AND LEGUME TRANSFORMATION USING ENGINEERED VIRAL VECTORS
   LEGUME INFORMATION SYSTEM - A LEGUME BIOINFORMATICS RESOURCE
   ACCELERATED COMMERCIAL DEVELOPMENT OF HYDROTREATED RENEWABLE JET FUEL (HRJ) FROM REDESIGNED OILSEED FEEDSTOCKS SUPPLY CHAINS
 
 
Last Modified: 05/21/2013
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