Accepted Manuscript © The Author(s) 2020. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For permissions, please email: journals.permissions@oup.com N-acyl homoserine lactone-mediated modulation of plant growth and defense against Pseudoperonospora cubensis in cucumber (Cucumis sativus L.) Sercan Pazarlar 1* , Nedim Cetinkaya 1 , Melike Bor 2 , Recep Serdar Kara 3 1 Department of Plant Protection, Faculty of Agriculture, Ege University, Izmir, Turkey 2 Department of Biology, Faculty of Science, Ege University, Izmir, Turkey 3 Department of Water Resources, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czechia e-mails: sercan.pazarlar@ege.edu.tr (*corresponding author), nedim.cetinkaya@ege.edu.tr, melike.bor@ege.edu.tr, karar@af.czu.cz Telephone number: 00905525424941 Highlight N-3-tetradecanoyl-L-homoserine lactone-mediated systemic defense is associated with the activation of the SA-related response, strengthening of cell walls by the accumulation of phenolic-based compounds and ROS, mainly H 2 O 2 , and activation of PR proteins. Downloaded from https://academic.oup.com/jxb/advance-article/doi/10.1093/jxb/eraa384/5895367 by guest on 27 August 2020