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00925njm 22002777a 4500 dc Río‐Álvarez, Isabel author Muñoz‐Gómez, Cristina author Navas‐Vásquez, Mariela author Martínez‐García, Pedro M. author Antúnez‐Lamas, María author Rodríguez‐Palenzuela, Pablo author López‐Solanilla, Emilio author 2015-04-14 Chemotaxis enables bacteria to move towards an optimal environment in response to chemical signals. In the case of plant-pathogenic bacteria, chemotaxis allows pathogens to explore the plant surface for potential entry sites with the ultimate aim to prosper inside plant tissues and to cause disease. Chemoreceptors, which constitute the sensory core of the chemotaxis system, are usually transmembrane proteins which change their conformation when sensing chemicals in the periplasm and transduce the signal through a kinase pathway to the flagellar motor. In the particular case of the soft-rot pathogen Dickeya dadantii 3937, jasmonic acid released in a plant wound has been found to be a strong chemoattractant which drives pathogen entry into the plant apoplast. In order to identify candidate chemoreceptors sensing wound-derived plant compounds, we carried out a bioinformatics search of candidate chemoreceptors in the genome of Dickeya dadantii 3937. The study of the chemotactic response to several compounds and the analysis of the entry process to Arabidopsis leaves of 10 selected mutants in chemoreceptors allowed us to determine the implications of at least two of them (ABF-0020167 and ABF-0046680) in the chemotaxis-driven entry process through plant wounds. Our data suggest that ABF-0020167 and ABF-0046680 may be candidate receptors of jasmonic acid and xylose, respectively. Río-Álvarez, I., Muñoz-Gómez, C., Navas-Vasquez, M, Martínez-García P., Antúnez-Lamas, M.,Rodríguez-Palenzuela, P. and López-Solanilla, E. 2015. Role of Dickeya dadantii 3937 chemoreceptors in the entry to Arabidopsis leaves through wounds. Molecular Plant Pathology 1464-6722 10.1111/mpp.12227 https://hdl.handle.net/20.500.14352/96505 1364-3703 https://doi.org/10.1111/mpp.12227 Role of Dickeya dadantii 3937 chemoreceptors in the entry to Arabidopsis leaves through wounds