Plant Mol Biol (2017) 93:549–562 DOI 10.1007/s11103-016-0581-5 The monomeric GTPase RabA2 is required for progression and maintenance of membrane integrity of infection threads during root nodule symbiosis 1 1 1 1 Virginia Dalla Via · Soledad Traubenik · Claudio Rivero · O. Mario Aguilar · 1 1 María Eugenia Zanetti · Flavio Antonio Blanco Received: 28 October 2016 / Accepted: 21 December 2016 / Published online: 10 January 2017 © Springer Science+Business Media Dordrecht 2017 Abstract modified this localization. Colocalization of RabA2 with Key message Progression of the infection canal that ArfA1 and a Golgi marker indicates that RabA2 localizes conducts rhizobia to the nodule primordium requires in Golgi stacks and the trans-Golgi network. Our results a functional Rab GTPase located in Golgi/trans-Golgi suggest that RabA2 is part of the vesicle transport events that also participate in root hair polar growth. required to maintain the integrity of the membrane during Abstract Common bean (Phaseolus vulgaris) symbioti- IT progression. cally associates with its partner Rhizobium etli, resulting in the formation of root nitrogen-fixing nodules. Compat- Keywords Nitrogen fixation · Vesicle transport · ible bacteria can reach cortical cells in a tightly regulated Legume · Rhizobia · Nodulation infection process, in which the specific recognition of sig- nal molecules is a key step to select the symbiotic partner. In this
Plant Molecular Biology – Springer Journals
Published: Jan 10, 2017
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