2nd Sept (Sun) 10:50 - 12:20

Legume Evolutionary Genomics

Evolution is a romance. The deeper we get into, the more we want to understand. Now we have known many things about evolution, but it never gives up surprising us and motivating our curiosity. To understand evolution, DNA sequences have long been recognized as strong tools. With sequences of ~100 polymorphic sites we could calculate differentiation and diversification among populations and species. However, such “population genetics” approaches could hardly tell us direct information of genetic changes behind adaptive traits. Given usual diploid plants have ~30,000 genes, sequencing only 100 genes are far from being enough to find genes responsible for the traits. Now genomics changed everything. It is now relatively easy to detect trait-related SNPs and INDELs by genome scan and genome-wide association studies. In this symposium we’d like to introduce how whole genome approaches reveal legume evolutions.

ORGANIZERS: Steven Cannon (United States Department of Agriculture, U.S.A.); Sachiko Isobe (Kazusa DNA Research Center, Japan); Ken Naito (National Agriculture and Food Research Organization, Japan)

1. Genome evolution in the legumes: common patterns, exceptions, and a candidate for the "ur-legume" genome.
Steven B Cannon*1, Jacob S Stai2, Longhui Ren2, Matthew Crook3, Jean-Michel Ané4, Jeff J Doyle5 (1USDA - Agricultural Research Service, CICGRU, Iowa State University, Ames, IA, USA;2Interdepartmental Genetics and Genomics Program, Iowa State University, Ames, IA, USA;3Department of Microbiology, Weber State University, Weber, UT, USA;4Departments of Bacteriology and Agronomy, University of Wisconsin, Madison, WI, USA;5Department of Plant Breeding & Genetics, Cornell University, Ithaca, NY, USA )

2. New insights on the origin of nodulation from genomic sequences of nodulating and non-nodulating legumes and other rosids
Jeff J. Doyle* (Cornell University, Plant Breeding & Genetics Section)

3. Genome-wide association study for the differences in flowering time variation under two conditions in Lotus japonicus in Japan
Tomomi Wakabayashi*1, Stig Uggerhøj Andersen2, Shusei Sato3, Masayoshi Kawaguchi4, Hiroaki Setoguchi5 (1CORE of STEM, Nara Women;2345 )

4. Genome-wide epigenetic regulation in realizing heterosis in pigeonpea (Cajanus cajan L.)
Pallavi Sinha*1, Vikas K Singh1, Rachit K Saxena1, Sandip Kale1, Yuqi Li2, Aamir W Khan1, Tang Meifang2, Vanika Garg1, Kyung Do Kim4, Annapurna Chitikineni1, K B Saxena1, Sameer Kumar CV1, Xin Liu2, Xun Xu2, Scott Jackson3, Wayne Powell5, Eviatar Nevo6, Rajeev K Varshney1 (1Center of Excellence in Genomics & Systems Biology, International Crops Research Institute for the Semi-Arid Tropics, Patancheru - 502324, Telangana State, India;2BGI-Shenzhen, Yantian District, Shenzhen 518083, China;3University of Georgia, Athens, USA;4LG Science Park, 30 Magokjungang 10-ro, Gangseo-gu, Seoul, 07796, Republic of Korea;5Scotland;67 )