CytokininNodulationPaper - A Gain-of-Function Mutation in a...

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DOI: 10.1126/science.1132397 , 104 (2007); 315 Science et al. Leïla Tirichine, Triggers Spontaneous Root Nodule Organogenesis A Gain-of-Function Mutation in a Cytokinin Receptor (this information is current as of January 30, 2008 ): The following resources related to this article are available online at version of this article at: including high-resolution figures, can be found in the online Updated information and services, can be found at: Supporting Online Material found at: can be related to this article A list of selected additional articles on the Science Web sites , 10 of which can be accessed for free: cites 26 articles This article 9 article(s) on the ISI Web of Science. cited by This article has been 5 articles hosted by HighWire Press; see: cited by This article has been Botany : subject collections This article appears in the following in whole or in part can be found at: this article permission to reproduce of this article or about obtaining reprints Information about obtaining registered trademark of AAAS. is a Science 2007 by the American Association for the Advancement of Science; all rights reserved. The title Copyright American Association for the Advancement of Science, 1200 New York Avenue NW, Washington, DC 20005. (print ISSN 0036-8075; online ISSN 1095-9203) is published weekly, except the last week in December, by the Science on January 30, 2008 Downloaded from
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27. S. Gonzalez-Rizzo, M. Crespi, F. Frugier, Plant Cell 18 , 2680 (2006). 28. K. Szczyglowski et al. , Mol. Plant Microbe Interact. 11 , 684 (1998). 29. D. P. Lohar et al. , Plant J. 38 , 203 (2004). 30. We thank A. Molnar for preparation of figures, L. Ross for technical help, and S. Kosuta and M. Held for helpful comments on the manuscript. This work was funded by Agriculture and Agri-Food Canada Crop Genomics Initiative and National Sciences and Engineering Research Council of Canada grant no. 3277A01 to K.S. Supporting Online Material Materials and Methods Figs. S1 to S8 References and Notes 14 July 2006; accepted 27 October 2006 Published online 16 November 2006; 10.1126/science.1132514 Include this information when citing this paper. A Gain-of-Function Mutation in a Cytokinin Receptor Triggers Spontaneous Root Nodule Organogenesis Leïla Tirichine, 1 Niels Sandal, 1 Lene H. Madsen, 1 Simona Radutoiu, 1 Anita S. Albrektsen, 1 Shusei Sato, 2 Erika Asamizu, 2 Satoshi Tabata, 2 Jens Stougaard 1 * Legume root nodules originate from differentiated cortical cells that reenter the cell cycle and form organ primordia. We show that perception of the phytohormone cytokinin is a key element in this switch. Mutation of a Lotus japonicus cytokinin receptor gene leads to spontaneous development of root nodules in the absence of rhizobia or rhizobial signal molecules. The mutant
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