Phylogenomics reveals multiple losses of nitrogen-fixing root nodule symbiosis

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Griesmann, Maximilian | Chang, Yue | Liu, Xin | Song, Yue | Haberer, Georg | Crook, Matthew | Billault-Penneteau, Benjamin | Lauressergues, Dominique | Keller, Jean | Imanishi, Leandro | Roswanjaya, Yuda Purwana | Kohlen, Wouter | Pujic, Petar | Battenberg, Kai | Alloisio, Nicole | Liang, Yuhu | Hilhorst, Henk | Salgado, Marco | Hocher, Valerie | Gherbi, Hassen | Svistoonoff, Sergio | Doyle, Jeff | He, Shixu | Xu, Yan | Xu, Shanyun | Qu, Jing | Gao, Qiang | Fang, Xiaodong | Fu, Yuan | Normand, Philippe | Berry, Alison | Wall, Luis | Ané, Jean-Michel | Pawlowski, Katharina | Xu, Xun | Yang, Huanming | Spannagl, Manuel | Mayer, Klaus | Wong, Gane Ka-Shu | Parniske, Martin | Delaux, Pierre-Marc | Cheng, Shifeng

Edité par CCSD ; American Association for the Advancement of Science (AAAS) -

International audience. Genomic traces of symbiosis loss A symbiosis between certain bacteria and their plant hosts delivers fixed nitrogen to the plants. Griesmann et al. sequenced several plant genomes to analyze why nitrogen-fixing symbiosis is irregularly scattered through the evolutionary tree (see the Perspective by Nagy). Various genomes carried traces of lost pathways that could have supported nitrogen-fixing symbiosis. It seems that this symbiosis, which relies on multiple pathways and complex interorganismal signaling, is susceptible to selection and prone to being lost over evolutionary time. Science , this issue p. eaat1743 ; see also p. 125

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