Priming: it’s all the world to induced disease resistance

Airborne Induction and Priming of Plant Defenses against a Bacterial Pathogen

“…This pattern is redolent of primed plants, in which a plant's defense arsenal had been sensitized rather than fully induced (Ton et al, 2007;Goellner and Conrath, 2008). Primed plants usually show no enhanced expression of phenotypic defense traits, but they respond faster or stronger to challenge inoculation than unprimed plants (van Hulten et al, 2006;Bruce et al, 2007;Goellner and Conrath, 2008). BTH is known to both induce and prime disease resistance in other plant species (Cools and Ishii, 2002;Kohler et al, 2002).…”

“…Plants were exposed to the VOCs emitted from neighbors that had been treated with the chemical SAR elicitor benzothiadiazole [BTH; benzo (1,2,3)thiadiazole-7-carbothioic acid S-methyl ester] or that had been induced biologically, and resulting changes in resistance were monitored at the phenotypic and gene expression levels. A common phenomenon involved in disease resistance is priming, which prepares the plant to respond more rapidly and/or effectively to subsequent attack (van Hulten et al, 2006;Bruce et al, 2007;Goellner and Conrath, 2008) but which comes at much lower costs than direct resistance induction (Heil and Baldwin, 2002;Walters and Boyle, 2005;Walters and Heil, 2007). Therefore, we investigated whether VOCs also can prime resistance to pathogens by first exposing plants to VOCs coming from directly induced plants and then challenging them with Pseudomonas syringae pv syringae.…”

The role of sugar signaling in plant defense responses against fungal pathogens

“…Already the results of earlier studies based on enzyme activity showed that many mechanisms of plant response to various stresses are similar and even many metabolic pathways initiated in defense against various stresses are identical. However, only the results of recent research, particularly concerning the regulation of gene expression, have made it possible to develop certain models explaining the relationships between biotic and abiotic stresses (Goellner and Conrath 2008). They also shed some light on the role of sugars in those responses.…”

“…Another example of the positive effect of plant acclimation to abiotic stress on the increase in their resistance to the attack of a fungal pathogen may be connected with adaptation to NaCl (Kuźniak et al 2010Libik-Konieczny et al 2011. The positive effect of certain abiotic stresses on plant resistance to biotic stresses may be viewed as their role of defense priming in plants (Goellner and Conrath 2008). ''Defence priming is a unique physiological state that can be induced by molecular patterns of microbes or plants, pathogen-derived effectors, beneficial microbes, and treatment with some natural or synthetic compounds and wounding.…”

Defense induced by a bis-aryl methanone compound leads to resistance in potato against Phytophthora infestans

“…Cheong et al (1991) showed that chemically synthesized oligo-8-glucosides, ranging in size from hexamer to decamer, induced phytoalexin accumulation in soybean. Benzothiadiazole (BTH) and 2,6-dichloroisonicotinic acid (INA) induced resistance in different plant species as a preventive measure against pathogen growth (Goellner and Conrath 2008;Perazzolli et al 2008;Vallad and Goodman 2004). A synthetic harmless chemical, b-aminobutyric acid induced resistance against numerous plant diseases in various pathosystems (Jakab et al 2001).…”