Jakab, Gabor Ton, Jurriaan Flors, Victor Zimmerli, Laurent Métraux, Jean-Pierre Mauch-Mani, Brigitte 2005 Drought and salt stress tolerance of Arabidopsis (<i>Arabidopsis thaliana</i>) plants increased following treatment with the nonprotein amino acid <i>β</i>-aminobutyric acid (BABA), known as an inducer of resistance against infection of plants by numerous pathogens. BABA-pretreated plants showed earlier and higher expression of the salicylic acid-dependent <i>PR-1</i> and <i>PR-5</i> and the abscisic acid (ABA)-dependent <i>RAB-18</i> and <i>RD-29A</i> genes following salt and drought stress. However, <i>non-expressor of pathogenesis-related genes 1</i> and <i>constitutive expressor of pathogenesis-related genes 1</i> mutants as well as transgenic NahG plants, all affected in the salicylic acid signal transduction pathway, still showed increased salt and drought tolerance after BABA treatment. On the contrary, the <i>ABA deficient 1</i> and <i>ABA insensitive 4</i> mutants, both impaired in the ABA-signaling pathway, could not be protected by BABA application. Our data demonstrate that BABA-induced water stress tolerance is based on enhanced ABA accumulation resulting in accelerated stress gene expression and stomatal closure. Here, we show a possibility to increase plant tolerance for these abiotic stresses through effective priming of the preexisting defense pathways without resorting to genetic alterations. application/pdf https://folia.unifr.ch/global/documents/300075 https://folia.unifr.ch/documents/300075/files/1_metraux_eas.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1104/pp.105.065698 info:eu-repo/semantics/openAccess License undefined Plant Physiology. - 2005, vol. 139, no. 1, p. 267-274 info:eu-repo/classification/udc/57 Enhancing Arabidopsis salt and drought stress tolerance by chemical priming for its abscisic acid responses http://purl.org/coar/resource_type/c_6501