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25-28 August 2016, Budapest, Hungary 1 12th European Nitrogen Fixation Conference BOOK OF ABSTRACTS 25-28 August 2016, Budapest, Hungary 2 12th European Nitrogen Fixation Conference 12th European Nitrogen Fixation Conference Book of Abstracts 25-28 August 2016 Budapest, Hungary ISBN 978-615-5270-26-0 Editors-in-chief: Éva Kondorosi, Gabriella Endre, Péter Kaló, Attila Kereszt Technical editor: Robert Hohol Cover photos: Tamás Thaler All rights are reserved for Diamond Congress Ltd., Budapest, Hungary, except the right of the authors to (re)publish their materials wherever they decide. This book is a working material for the 12th European Nitrogen Fixation Conference. The professional and grammatical level of the materials is the authors' responsibility. 25-28 August 2016, Budapest, Hungary 3 TABLE OF CONTENTS Assembly of Symbionts and Endophytes at Lotus japonicus Root-Soil Interface .......................................... 25 Simona Radutoiu Gatekeepers of Symbiotic Nitrogen Fixation in Legumes ............................................................................... 27 Jens Stougaard Nuclear Calcium Signalling in Symbioses ......................................................................................................... 29 Myriam Charpentier, Jongho Sun, Teresa vaz Martins, Guru V. Radhakrishnan, Eleni Soumpourou, Richard Morris, Giles Oldroyd Regulatory System Evolution of Symbiotic Organ Development ................................................................... 30 Satoru Okamoto, Takema Sasaki, Emiko Yoro, Hikota Miyazawa, Takashi Soyano, Makoto Hayashi, Naoya Takeda, Yoshikatsu Matsubayashi, Hironori Fujita, Takuya Suzaki, Masayoshi Kawaguchi Expression and Maturation of Nitrogenase Components in Mitochondria ................................................... 32 G. López-Torrejón, S. Burén, E. Jiménez-Vicente, J. A. Hernandez, J. M. Buesa, M. Veldhuizen, M. Navarro- Rodríguez, C. Echavarri-Erasun, Luis M. Rubio Connecting the Dots, Gene Regulatory Networks in Rhizobial Infection ...................................................... 34 Cheng-Wu Liu, Andy Breakspear, Donna Cousins, Fran Robson, Kirsty Jackson, Da-Song Chen, Sonali Roy, Nicola Stacey, Christian Rogers, Marion R. Cerri, Martin Trick, Giles E. Oldroyd, Fernanda de Carvalho-Niebel, Andreas Niebel and Jeremy D. Murray Regulation of Infection in Root Epidermis and Cortex for Nodulation ......................................................... 35 Makoto Hayashi A Novel Component of the CCaMK/CYCLOPS Complex Regulates Root Nodule Symbiosis .................... 37 Martin Parniske DELLA-mediated Gibberellin Signaling Is a Direct Regulator of Nod Factor Signaling and Rhizobial Infection ............................................................................................................................................................... 39 Camille Fonouni-Farde, Sovanna Tan, Maël Baudin, Mathias Brault, Jiangqi Wen, Kirankumar S. Mysore, Andreas Niebel, Anouck Diet and Florian Frugier Identification of Genes Controlling Cytokinin Homeostasis during Nodule Development in Lotus japonicus ................................................................................................................................................ 40 Dugald Reid, Ondrej Novák, Marcin Nadzieja, Anne B. Heckmann, Niels Sandal and Jens Stougaard miRNAs Regulate Nodule Number in Soybean ................................................................................................ 41 Y. N. Wang, L. X. Wang, Y. M. Zou, B. J. Ferguson, P. M. Gresshoff, Xia Li A Micro RNA Acts as a Signal in Systemic Control of Nodulation Symbiosis .............................................. 42 Daniela Tsikou, Zhe Yan, Jens Stougaard and Katharina Markmann From the Genetic Map to the Genome Assembly of the Nod Factor-independent Aeschynomene evenia to Shed Light on the Evolution of Nodulation ...................................................................................................... 43 P. Leleux, C. Chaintreuil, L. Lamy, R. Rivallan, C. Klopp, D. J. Bertioli, E. Giraud, Jean-Francois Arrighi The Pea (Pisum sativum L.) Receptor-like Kinase Gene LykX, the Most Prominent Candidate for Sym2, is Required for Successful Penetration of Rhizobia into the Root Hair ............................................................. 44 Anton Sulima, Vladimir Zhukov, Alexey Borisov, Igor Tikhonovich Lotus-Rhizobium Symbiosis is Facilitated by the Epidermal Nod Factor Receptor ..................................... 45 Eiichi Murakami, Jeryl Cheng, Zoltán Bozsóki, Kira Gysel, Yasuyuki Kawaharada, Lene H. Madsen, Jens Stougaard & Simona Radutoiu Identification of a Novel Component of the CCaMK/CYCLOPS Complex .................................................. 46 Katja Katzer and Martin Parniske 4 12th European Nitrogen Fixation Conference KNAT3/4/5-like KNOX Transcription Factors Regulate Symbiotic Nodule Organ Development in Medicago truncatula Potentially Through the MtEFD/MtRR4 Cytokinin-Related Regulatory Module...... 47 Carole Laffont, Elisabetta Di Giacomo, Francesca Sciarra, Maria Adelaide Iannelli, Florian Frugier and Giovanna Frugis Nodule and Lateral Root Development Are Mediated by Independent Pathways Downstream of the MtCEP1 Peptide / CRA2 Receptor in Medicago truncatula ............................................................................ 48 Nadiatul A. Mohd Radzman, Carole Laffont, Ariel Ivanovici, Neha Patel, Dugald Reid, Jens Stougaard, Florian Frugier, Nijat Imin and Michael A. Djordjevic Genetic Requirements for Biosynthesis and Activity of FeFe Nitrogenase .................................................... 50 Jianguo Yang, Xiaqing Xie, Xia Wang, Ray Dixon and Yi-Ping Wang The Role of Rhizobial (NifV) and Plant (FEN1) Homocitrate Synthases in Symbiotic Nitrogen Fixation ................................................................................................................................................ 51 Nico Nouwen, Jean-François Arrighi, Fabienne Cartieaux, Djamel Gully, Clemence Chaintreuil and Eric Giraud The Role of the Signal Peptide Peptidase in Nodule Development and Symbiosis ........................................ 52 Rui Lima, Attila Farkas, Attila Szűcs, Edit Ábrahám, Edina Kiss, Hilda Tiricz, Olga Nagy, Attila Kereszt, Éva Kondorosi Sinorhizobium meliloti YbeY: A Novel Endoribonuclease Involved in RNA-mediated Gene Silencing ...... 53 José I. Jiménez-Zurdo, Marta Robledo, Alexandra Peregrina, Natalia I. García-Tomsig, Margarida Saramago, Rute G. Matos, Cecilia Arraiano, Rolf Hilker, Anke Becker Comparative Biochemical Studies of Lotus japonicus LysM Receptor Like Kinases ................................... 54 Kira Gysel, M. Vinther, M. Blaise, J. Cheng, C. T. Hjuler, Y. Kawaharada, A. Muszynski, M. B. Thygesen, K. R. Andersen, S. S. Thirup, K. J. Jensen, J. Stougaard Regulation of Bacterial Metabolism by the Phosphotransferase System (PTSNtr) ........................................ 55 Carmen Sanchez-Cañizares, Francesco Pini, Jürgen Prell, Philip Poole The Nod Factor Hydrolase of Medicago truncatula: An Example of Symbiosis-related Neofunctionalization ........................................................................................................................................... 56 Lan-Yue Zhang, Jie Cai, Wei Liu, Ru-Jie Li, Kam-Bo Wong, Jiangqi Wen, Kirankumar S. Mysore, Thomas Boller, Zhi-Ping Xie, Christian Staehelin From Symbiosis to Biotechnology: The Metal Ion-inducible Autocleavage (MIIA) Domain ....................... 57 Jana Schirrmeister, Susan Ibe, Elisabeth Hoyer, Martina Liebmann, Susanne Zehner, Karim Fahmy, Michael Göttfert Heterologous Expression of Enzymes of the Nitrogenase Pathway ................................................................ 58 Laure Decamps, Ivana Djurdjevic, Oliver Einsle Exploring the Function of the Inorganic Phosphate Transporter (PiT)-associated Protein in Sinorhizobium meliloti .................................................................................................................................... 59 Daniel K. C. Hsieh, Vahid Hosseininaveh, Rahat Zaheer, Richard Morton and Turlough M. Finan Diversity of Nodulation and Infection in Lotus x Rhizobium Combinations Revealed Dynamic Evolutionary Processes ....................................................................................................................................... 61 J. Liang and Macarena Marín Autoregulation of Infection in the Sinorhizobium meliloti-Medicago Symbiosis ........................................... 62 Anne M. Garnerone, Fernando G. Sorroche, Mathilda Walch, Catherine Masson-Boivin, Jacques Batut Role of SYMbiosis Receptor Kinase (SYMRK) in Synchronising Epidermal Cortical Responses in Root Nodule Symbiosis ................................................................................................................................................ 63 Sudip Saha, Anindita Paul, Laura Herring, Ayan Dutta, Avisek Bhattacharya, Sandip Samaddar, Michael B. Goshe and Maitrayee DasGupta The Unique Brush Allele Reveals Redundancy in a Cluster of Channel Proteins during Root Development and Infection by Rhizobia .................................................................................................................................. 64 David M. Chiasson, K. Haage, K. Sollweck and M. Parniske 25-28 August 2016, Budapest, Hungary 5 NF-Y TFs as Key Regulators of Nodule Development and Infection ............................................................. 65 Arnaud Bethencourt,