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Mol Plant Pathol


Title:Abscisic acid deficiency increases defence responses against Myzus persicae in Arabidopsis
Author(s):Hillwig MS; Chiozza M; Casteel CL; Lau ST; Hohenstein J; Hernandez E; Jander G; MacIntosh GC;
Address:"Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, IA, 50011, USA. Boyce Thompson Institute for Plant Research, Ithaca, NY, 14853, USA"
Journal Title:Mol Plant Pathol
Year:2016
Volume:20150607
Issue:2
Page Number:225 - 235
DOI: 10.1111/mpp.12274
ISSN/ISBN:1364-3703 (Electronic) 1464-6722 (Print) 1364-3703 (Linking)
Abstract:"Comparison of Arabidopsis thaliana (Arabidopsis) gene expression induced by Myzus persicae (green peach aphid) feeding, aphid saliva infiltration and abscisic acid (ABA) treatment showed a significant positive correlation. In particular, ABA-regulated genes are over-represented among genes that are induced by M. persicae saliva infiltration into Arabidopsis leaves. This suggests that the induction of ABA-related gene expression could be an important component of the Arabidopsis-aphid interaction. Consistent with this hypothesis, M. persicae populations induced ABA production in wild-type plants. Furthermore, aphid populations were smaller on Arabidopsis aba1-1 mutants, which cannot synthesize ABA, and showed a significant preference for wild-type plants compared with the mutant. Total free amino acids, which play an important role in aphid nutrition, were not altered in the aba1-1 mutant line, but the levels of isoleucine (Ile) and tryptophan (Trp) were differentially affected by aphids in wild-type and mutant plants. Recently, indole glucosinolates have been shown to promote aphid resistance in Arabidopsis. In this study, 4-methoxyindol-3-ylmethylglucosinolate was more abundant in the aba1-1 mutant than in wild-type Arabidopsis, suggesting that the induction of ABA signals that decrease the accumulation of defence compounds may be beneficial for aphids"
Keywords:Abscisic Acid/*metabolism Amino Acids/metabolism Animals Aphids/*physiology Arabidopsis/*immunology/*parasitology Ecotype Glucosinolates/metabolism Herbivory/physiology Indoles/metabolism Mutation/genetics Saliva Arabidopsis Myzus persicae abscisic acid a;
Notes:"MedlineHillwig, Melissa S Chiozza, Mariana Casteel, Clare L Lau, Siau Ting Hohenstein, Jessica Hernandez, Enrique Jander, Georg MacIntosh, Gustavo C eng Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. England 2015/05/07 Mol Plant Pathol. 2016 Feb; 17(2):225-35. doi: 10.1111/mpp.12274. Epub 2015 Jun 7"

 
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