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The Medicago genome provides insight into the evolution of rhizobial symbioses

Nature2011Vol. 480(7378), pp. 520–524

Citations Over TimeTop 1% of 2011 papers

Nevin D. Young, Frédéric Debellé, Giles Oldroyd, René Geurts, Steven B. Cannon, Michael K. Udvardi, Vagner A. Benedito, Klaus Mayer, Jérôme Gouzy, Heiko Schoof, Yves Van de Peer, Sebastian Proost, Douglas R. Cook, Blake C. Meyers, M. Spannagl, Foo Cheung, Stéphane De Mita, Vivek Krishnakumar, Heidrun Gundlach, Shiguo Zhou, Joann Mudge, Arvind K. Bharti, Jeremy D. Murray, Marina Naoumkina, Benjamin D. Rosen, Kevin A.T. Silverstein, Haibao Tang, Stéphane Rombauts, Patrick X. Zhao, Peng Zhou, Valérie Barbe, Philippe Bardou, Michael Bechner, Arnaud Bellec, Anne Berger, Hélène Bergès, Shelby Bidwell, Ton Bisseling, Nathalie Choisne, Arnaud Couloux, Roxanne Denny, Shweta Deshpande, Xinbin Dai, Jeff J. Doyle, Anne-Marie Dudez, Andrew Farmer, Stéphanie Fouteau, Carolien Franken, Chrystel Gibelin, John Gish, Steven Goldstein, Álvaro González, Pamela J. Green, Asis Hallab, Marijke Hartog, Axin Hua, Sean Humphray, Dong-Hoon Jeong, Yi Jing, Anika Jöcker, Steve Kenton, Dong-Jin Kim, Kathrin Klee, Hongshing Lai, Chunting Lang, Shaoping Lin, Simone L. Macmil, Ghislaine Magdelenat, Lucy Matthews, Jamison McCorrison, Erin L. Monaghan, Jeong-Hwan Mun, Fares Z. Najar, Christine Nicholson, Céline Noirot, Majesta O’Bleness, Charles R. Paule, Julie Poulain, Florent Prion, Baifang Qin, Chunmei Qu, Ernest F. Retzel, Claire Riddle, Erika Sallet, Sylvie Samain, Nicolas Samson, Iryna Sanders, Olivier Saurat, Claude Scarpelli, Thomas Schiex, Béatrice Segurens, Andrew Severin, D. Janine Sherrier, Ruihua Shi, Sarah Sims, Susan R. Singer, Senjuti Sinharoy, Lieven Sterck, Agnès Viollet, Bing Bing Wang, Keqin Wang, Mingyi Wang, Xiaohong Wang, Jens Warfsmann, Jean Weissenbach, Doug D. White, Jim White, Graham B. Wiley, Patrick Wincker, Yanbo Xing, Limei Yang, Ziyun Yao, Ying Fu, Jixian Zhai, Liping Zhou, Antoine Zuber, Jean Denarié, Richard A. Dixon, Gregory D. May, David C. Schwartz, Jane Rogers, Françis Quétier, Christopher D. Town, Bruce A. Roe

Abstract

Legumes (Fabaceae or Leguminosae) are unique among cultivated plants for their ability to carry out endosymbiotic nitrogen fixation with rhizobial bacteria, a process that takes place in a specialized structure known as the nodule. Legumes belong to one of the two main groups of eurosids, the Fabidae, which includes most species capable of endosymbiotic nitrogen fixation. Legumes comprise several evolutionary lineages derived from a common ancestor 60 million years ago (Myr ago). Papilionoids are the largest clade, dating nearly to the origin of legumes and containing most cultivated species. Medicago truncatula is a long-established model for the study of legume biology. Here we describe the draft sequence of the M. truncatula euchromatin based on a recently completed BAC assembly supplemented with Illumina shotgun sequence, together capturing ∼94% of all M. truncatula genes. A whole-genome duplication (WGD) approximately 58 Myr ago had a major role in shaping the M. truncatula genome and thereby contributed to the evolution of endosymbiotic nitrogen fixation. Subsequent to the WGD, the M. truncatula genome experienced higher levels of rearrangement than two other sequenced legumes, Glycine max and Lotus japonicus. M. truncatula is a close relative of alfalfa (Medicago sativa), a widely cultivated crop with limited genomics tools and complex autotetraploid genetics. As such, the M. truncatula genome sequence provides significant opportunities to expand alfalfa's genomic toolbox.

Citations Over TimeTop 1% of 2011 papers

Abstract

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