| Title: | Defense priming by non-jasmonate producing fatty acids in maize (Zea mays) |
| Author(s): | Li T; Cofer TM; Engelberth MJ; Engelberth J; |
| Address: | "a Department of Biology , University of Texas at San Antonio, One UTSA Circle , San Antonio , TX , USA. b Center for Chemical Ecology, Department of Entomology, Pennsylvania State University , University Park , PA , USA" |
| DOI: | 10.1080/15592324.2016.1243635 |
| ISSN/ISBN: | 1559-2324 (Electronic) 1559-2316 (Print) 1559-2316 (Linking) |
| Abstract: | "Previously, we described a priming effect of alpha-linolenic acid (LnA) on anti-herbivore defense response in maize seedlings. (1) We showed that exogenous application of LnA stimulated higher jasmonic acid (JA) accumulation and herbivore-induced plant volatile (HIPV) emission after treatment with insect elicitor (IE). To further investigate the specificity of LnA's priming effect, we incubated maize seedlings in palmitoleic acid (PeicA), gamma-linolenic acid (gamma LnA) and stearic acid (StA) solutions, and analyzed HIPV emission in response to IE. Seedlings incubated in PeicA and gamma LnA had 3 and 1.8 times higher HIPV release when compared to controls. In contrast, treatment with StA did not up-regulate HIPV release. We propose that the elevated level and/or the presence of unsaturated fatty acids sensitize the defense signaling system, which in turn augments the defense response of maize when under insect herbivore attack" |
| Keywords: | "Animals Cyclopentanes/*metabolism Fatty Acids/*metabolism Fatty Acids, Monounsaturated/pharmacology Gene Expression Regulation, Plant Herbivory/physiology Insecta/physiology Oxylipins/*metabolism Seedlings/drug effects/metabolism Stearic Acids/pharmacolog;" |
| Notes: | "MedlineLi, Ting Cofer, Tristan M Engelberth, Marie J Engelberth, Jurgen eng 2016/10/21 Plant Signal Behav. 2016 Nov; 11(11):e1243635. doi: 10.1080/15592324.2016.1243635" |
