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Sci Rep. 2015 Jan 28;5:8069. doi: 10.1038/srep08069.

Draft genome sequence of adzuki bean, Vigna angularis.

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Department of Plant Science and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-921, Korea.
Indonesian Center for Agricultural Biotechnology and Genetic Resources Research and Development (ICABIOGRAD-IAARD), Jalan Tentara Pelajar No. 3A Bogor 16111, Indonesia.
Program in Plant Breeding, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University, Kamphaeng Saen, Nakhon Pathom 73140, Thailand.
National Institute of Crop Science, Rural Development Administration, Suwon, 441-857, Korea.
Research Policy Bureau, R&D Performance Evaluation &Management Division, Nongsaengmyeong-ro 300, Wansan-gu, Junju, 560-500, Korea.
International Crops Research Institute for the Semi-Arid Tropics, Patancheru, Andhra Pradesh, India.
Soybean Research Team, Legume &Oil Crop Research Division, Jeompiljae-ro 20, Miryang, Gyeongnamdo, 627-803, Korea.
National Agrobiodiversity Center of NAAS, RDA, SuwonxGyeongnamdo, Korea.
Agricultural Genome Center, National Academy of Agricultural Science, Rural Development Administration, Suwon, 441-707, Korea.
1] Department of Plant Science and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-921, Korea [2] Plant Genomics and Breeding Institute, Seoul National University, Seoul, 151-921, Korea.


Adzuki bean (Vigna angularis var. angularis) is a dietary legume crop in East Asia. The presumed progenitor (Vigna angularis var. nipponensis) is widely found in East Asia, suggesting speciation and domestication in these temperate climate regions. Here, we report a draft genome sequence of adzuki bean. The genome assembly covers 75% of the estimated genome and was mapped to 11 pseudo-chromosomes. Gene prediction revealed 26,857 high confidence protein-coding genes evidenced by RNAseq of different tissues. Comparative gene expression analysis with V. radiata showed that the tissue specificity of orthologous genes was highly conserved. Additional re-sequencing of wild adzuki bean, V. angularis var. nipponensis, and V. nepalensis, was performed to analyze the variations between cultivated and wild adzuki bean. The determined divergence time of adzuki bean and the wild species predated archaeology-based domestication time. The present genome assembly will accelerate the genomics-assisted breeding of adzuki bean.

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