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J Exp Bot

Title:		ML3: a novel regulator of herbivory-induced responses in Arabidopsis thaliana
Author(s):		Fridborg I; Johansson A; Lagensjo J; Leelarasamee N; Flokova K; Tarkowska D; Meijer J; Bejai S;
Address:		"Department of Plant Biology and Forest Genetics, Uppsala Biocenter, Swedish University of Agricultural Sciences and Linnean Center for Plant Biology, Uppsala, Sweden"
Journal Title:		J Exp Bot
Year:		2013
Volume:		20130110
Issue:		4
Page Number:		935 - 948
DOI:		10.1093/jxb/ers372
ISSN/ISBN:		1460-2431 (Electronic) 0022-0957 (Print) 0022-0957 (Linking)
Abstract:		ML (MD2-related lipid recognition) proteins are known to enhance innate immune responses in mammals. This study reports the analysis of the putative ML gene family in Arabidopsis thaliana and suggests a role for the ML3 gene in herbivory-associated responses in plants. Feeding by larvae of the Lepidopteran generalist herbivore Spodoptera littoralis and larvae of the specialist herbivore Plutella xylostella activated ML3 transcription in leaf tissues. ML3 loss-of-function Arabidopsis plants were compromised in the upregulation of herbivory-induced genes and displayed a semi-dwarf phenotype. Herbivory bioassays showed that larvae of S. littoralis fed on ml3 mutant plants gained more weight compared to larvae fed on wild-type plants while larvae of P. xylostella did not show any significant difference. Virus-induced gene silencing of ML3 expression in plants compromised in jasmonic acid (JA) and salicylic acid (SA) signalling revealed a complex role of ML3 in JA/defence signalling affecting both JA- and SA-dependent responses. The data suggest that ML3 is involved in herbivory-mediated responses in Arabidopsis and that it has a potential role in herbivory-associated molecular pattern recognition
Keywords:		"Animals Arabidopsis/genetics/*metabolism/physiology Arabidopsis Proteins/genetics/metabolism Cyclopentanes/pharmacology *Gene Expression Regulation, Plant Gene Silencing *Genes, Plant *Herbivory Larva/physiology Multigene Family Oxylipins/pharmacology Phy;"
Notes:		"MedlineFridborg, Ingela Johansson, Anna Lagensjo, Johanna Leelarasamee, Natthanon Flokova, Kristyna Tarkowska, Danuse Meijer, Johan Bejai, Sarosh eng Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. England 2013/01/15 J Exp Bot. 2013 Feb; 64(4):935-48. doi: 10.1093/jxb/ers372. Epub 2013 Jan 10"