« Previous AbstractComparison of an Offline SPE-GC-MS and Online HS-SPME-GC-MS Method for the Analysis of Volatile Terpenoids in Wine    Next AbstractIntraspecific variation in odor-mediated host preference of the mosquito Culex annulirostris »

J Exp Bot

Title:		Induced epidermal permeability modulates resistance and susceptibility of wheat seedlings to herbivory by Hessian fly larvae
Author(s):		Williams CE; Nemacheck JA; Shukle JT; Subramanyam S; Saltzmann KD; Shukle RH;
Address:		"USDA-ARS Crop Production and Pest Control Research Unit, MWA, West Lafayette, IN 47907, USA. Christie.Williams@ars.usda.gov"
Journal Title:		J Exp Bot
Year:		2011
Volume:		20110609
Issue:		13
Page Number:		4521 - 4531
DOI:		10.1093/jxb/err160
ISSN/ISBN:		1460-2431 (Electronic) 0022-0957 (Print) 0022-0957 (Linking)
Abstract:		"Salivary secretions of neonate Hessian fly larvae initiate a two-way exchange of molecules with their wheat host. Changes in properties of the leaf surface allow larval effectors to enter the plant where they trigger plant processes leading to resistance and delivery of defence molecules, or susceptibility and delivery of nutrients. To increase understanding of the host plant's response, the timing and characteristics of the induced epidermal permeability were investigated. Resistant plant permeability was transient and limited in area, persisting just long enough to deliver defence molecules before gene expression and permeability reverted to pre-infestation levels. The abundance of transcripts for GDSL-motif lipase/hydrolase, thought to contribute to cuticle reorganization and increased permeability, followed the same temporal profile as permeability in resistant plants. In contrast, susceptible plants continued to increase in permeability over time until the entire crown of the plant became a nutrient sink. Permeability increased with higher infestation levels in susceptible but not in resistant plants. The ramifications of induced plant permeability on Hessian fly populations are discussed"
Keywords:		"Amino Acid Motifs Amino Acid Sequence Animals Diptera/*physiology Discriminant Analysis Gene Expression Regulation, Enzymologic Gene Expression Regulation, Plant Herbivory/*physiology Hydrolases/chemistry/genetics/metabolism Larva/physiology Molecular Seq;"
Notes:		"MedlineWilliams, Christie E Nemacheck, Jill A Shukle, John T Subramanyam, Subhashree Saltzmann, Kurt D Shukle, Richard H eng Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. England 2011/06/11 J Exp Bot. 2011 Aug; 62(13):4521-31. doi: 10.1093/jxb/err160. Epub 2011 Jun 9"