03323naa a2200265 a 450000100080000000500110000800800410001902200420006002400370010210000200013924501940015926000090035350010070036252014090136965300180277865300270279665300130282370000200283670000160285670000170287270000150288970000140290470000170291877301220293510631942022-12-02       2022    bl uuuu     u00u1 u    #d  a1598-2254 (print); 2093-9280 (online)7 a10.5423/PPJ.OA.01.2022.00082DOI1 aDALLA RIZZA, M.  aField performance of resistant potato genotypes transformed with the EFR receptor from Arabidopsis thaliana in the absence of bacterial wilt (Ralstonia solanacearum).h[electronic resource]  c2022  aArticle history: Received 20 January 2022; Revised 9 May 2022; Accepted 10 May 2022. -- Corresponding author: Marco Dalla-Rizza, Email: mdallarizza@inia.org.uy  --  Marco Dalla-Rizza and Claudia Schvartzman contributed equally to this study as co-first authors. -- Handling Editor: Cheol Seong Jang. Acknowledgments: To Laura Orrego, for her constant bibliographic support; Adriana Reggio and Armando de Paz, for helping in field work. The authors are grateful for Cyril Zipfel?s critical reading, suggestions and corrections to the manuscript. Research project founded by the National Agency for Research and Innovation (ANII_FMV_ 136506). License: This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited. -- Article: Gold Open Access; Green Open Access.  aABSTRACT - Bacterial wilt caused by the pathogen Ralstonia solanacearum is a devastating disease of potato crops. Harmonizing immunity to pathogens and crop yield is a balance between productive, economic, and environmental interests. In this work, the agronomic performance of two events of potato cultivar INIA Iporá expressing the Arabidopsis thaliana EFR gene (Iporá EFR 3 and Iporá EFR 12) previously selected for their high resistance to bacterial wilt was evaluated under pathogen-free conditions. During two cultivation cycles, the evaluated phenotypic characteristics were emergence, beginning of flowering, vigor, growth, leaf morphology, yield, number and size of tubers, analyzed under biosecurity standards. The phenotypic characteristics evaluated did not show differences, except in the morphology of the leaf with a more globose appearance and a shortening of the rachis in the transformation events with respect to untransformed Iporá. The Iporá EFR 3 genotype showed a ~40% yield decrease in reference to untransformed Iporá in the two trials, while Iporá EFR 12 did not differ statistically from untransformed Iporá. Iporá EFR 12 shows performance stability in the absence of the pathogen, compared to the untransformed control, positioning it as an interesting candidate for regions where the presence of the pathogen is endemic and bacterial wilt has a high economic impact.  aDefense genes  aGenetic transformation  aImmunity1 aSCHVARTZMAN, C.1 aMURCHIO, S.1 aBERRUETA, C.1 aBOSCHI, F.1 aLENZI, A.1 aGIMÉNEZ, G.  tThe Plant Pathology Journal, 2022, vol.38 (3): 239-247. OPEN ACCESS. doi: https://doi.org/10.5423/PPJ.OA.01.2022.0008