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The Medicago genome provides insight into the evolution of rhizobial symbioses

Nevin D. Young 1, * Frederic Debellé 2, 3 Giles E. D. Oldroyd 4 Rene Geurts 5 Steven Cannon 6, 7 Michael K. Udvardi 8 Vagner A. Benedito 9 Klaus F. X. Mayer 10 Jerome Gouzy 2, 11 Heiko Schoof 12 Yves van de Peer 13 Sebastian Proost 13 Douglas R. Cook 14 Blake C. Meyers 15 Manuel Spannagl 10 Foo Cheung 16 Stéphane de Mita 17, 5 Vivek Krishnakumar 16 Heidrun Gundlach 10 Shiguo Zhou 18 Joann Mudge 19 Arvind K. Bharti 19 Jeremy D. Murray 20, 8 Marina A. Naoumkina 8 Benjamin Rosen 14 Kevin A. T. Silverstein 1 Haibao Tang 16 Stephane Rombauts 21 Patrick X. Zhao 8 Peng Zhou 1 Valérie Barbe 22 Philippe Bardou 2, 3 Mickael Bechner 18 Arnaud Bellec 23 Anne Berger 22 Helene Berges 23 Shelby Bidwell 16 Ton Bisseling 5, 24 Nathalie Choisne 22 Arnaud Couloux 22 Roxanne Denny 1 Shweta Deshpande 25 Xinbin Dai 8 Jeff J. Doyle 26 Anne-Marie Dudez 2, 3 Andrew D. Farmer 19 Stéphanie Fouteau 22 Carolien Franken 5 Chrystel Gibelin 2, 3 John Gish 14 Steven Goldstein 18 Alvaro J. Gonzalez 15 Pamela J. Green 15 Asis Hallab 27 Marijke Hartog 28 Axin Hua 25 Sean Humphray 29 Dong-Hoon Jeong 15 Yi Jing 25 Anika Jöcker 27 Steve M. Kenton 25 Dong-Jin Kim 14, 30 Kathrin Klee 27 Hongshing Lai 25 Chunting Lang 5 Shaoping Lin 25 Simone L. Macmil 25 Ghislaine Magdelenat 22 Lucy Matthews 29 Jamison Mccorrison 16 Erin L. Monaghan 16 Jeong-Hwan Mun 31, 32 Fares Z. Najar 25 Christine Nicholson 29 Céline Noirot 33 Majesta O'Bleness 25 Charles R. Paule 1 Julie Poulain 22 Florent Prion 2, 3 Baifang Qin 25 Chunmei Qu 25 Ernest F. Retzel 19 Claire Riddle 29 Erika Sallet 2, 3 Sylvie Samain 22 Nicolas Samson 2, 3 Iryna Sanders 25 Olivier Saurat 2, 3 Claude Scarpelli 22 Thomas Schiex 33 Béatrice Ségurens 22 Andrew Severin 7 D. Janine Sherrier 15 Ruihua Shi 25 Sarah Sims 29 Susan R. Singer 34 Senjuti Sinharov 8 Lieven Sterck 13 Agnès Viollet 22 Bing-Bing Wang 1 Keqin Wang 25 Mingyi Wang Xiaohong Wang 1 Jens Warfsmann 27 Jean Weissenbach 13 Doug D. White 25 Jim D. White 25 Graham B. Wiley Patrick Wincker 22 Yanbo Xing 25 Limei Yang 25 Ziyun Yao 25 Fu Ying 25 Jixian Zhai 15 Liping Zhou 25 Antoine Zuber 2, 3 Jean Denarié 2, 3 Richard A. Dixon 8 Gregory D. Mary 19 David C. Schwartz Jane Rogers Francis Quétier 22 Christopher D. Town 16 Bruce A. Roe 25
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 fixation1. 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 species2. 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.
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https://hal.inrae.fr/hal-02652790
Déposant : Migration Prodinra <>
Soumis le : vendredi 29 mai 2020 - 20:15:10
Dernière modification le : lundi 26 octobre 2020 - 11:34:28

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Nevin D. Young, Frederic Debellé, Giles E. D. Oldroyd, Rene Geurts, Steven Cannon, et al.. The Medicago genome provides insight into the evolution of rhizobial symbioses. Nature, Nature Publishing Group, 2011, 480 (7378), pp.520-524. ⟨10.1038/nature10625⟩. ⟨hal-02652790⟩

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