Document Detail


Differential accumulation of phytohormones in wheat seedlings attacked by avirulent and virulent Hessian fly (Diptera: Cecidomyiidae) larvae.
MedLine Citation:
PMID:  20214384     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We analyzed the accumulation of six phytohormones and phytohormone-related compounds in a wheat, Triticum aestivium L., genotype, 'Molly', after attacks by avirulent and virulent Hessian fly, Mayetiola destructor (Say) (Diptera: Cecidomyiidae), larvae, respectively, and we examined the expression of genes in the jasmonic acid (JA) pathway by Northern blot analysis. Compared with uninfested plants, attacks by avirulent larvae resulted in increased accumulation of salicylic acid (SA) by 11.3- and 8.2-fold, 12-oxo-phytodienoic acid (OPDA) by 36.4-and 18.7-fold, 18:3 fatty acid by 4.5- and 2.2-fold, and 18:1 fatty acid by 1.8- and 1.9-fold at 24 and 72 h post-initial attack (hpia), respectively, but an 20% decrease in JA accumulation at 24 hpia at the attack site. Attacks by the virulent larvae did not affect the accumulation of SA, OPDA, and 18:3 and 18:1 fatty acids but dramatically increased the concentration of auxin (AUX) from undetectable in uninfested plants to 381.7 ng/g fresh weight at 24 hpia and 71.0 ng/g fresh weight at 72 hpia in infested plants. Transcript levels of genes encoding lipoxygenase 2, allene oxide synthase, and Arabidopsis storage protein 2 were increased after avirulent larval attacks but decreased after virulent larval attacks. Our results suggest that OPDA and SA may act together in wheat resistance to the Hessian fly, whereas AUX may play a role in the susceptibility of wheat plants. The increased OPDA accumulation after avirulent larval attacks was at least partially regulated through gene transcription.
Authors:
Lieceng Zhu; Xiang Liu; Ming-Shun Chen
Related Documents :
1551444 - Both the anaerobic pathway and aerobic desaturation are involved in the synthesis of un...
10962234 - Effect of skin pretreatment with fatty acids on percutaneous absorption and skin retent...
19932114 - The composition of the free fatty acids from dendrolimus pini exuviae.
2931204 - Preparation of functional group analogs of unsaturated fatty acids and their effects on...
25466004 - Systematic qualitative and quantitative assessment of fatty acids in the seeds of 60 tr...
19492914 - Long chain polyunsaturated fatty acids in mothers and term babies.
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  Journal of economic entomology     Volume:  103     ISSN:  0022-0493     ISO Abbreviation:  J. Econ. Entomol.     Publication Date:  2010 Feb 
Date Detail:
Created Date:  2010-03-10     Completed Date:  2010-04-05     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2985127R     Medline TA:  J Econ Entomol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  178-85     Citation Subset:  IM    
Affiliation:
Department of Natural Science, Fayetteville State University, Fayetteville, NC 28301, USA. lzhu@uncfsu.edu
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Animals
Diptera / pathogenicity*
Gene Expression Regulation, Plant / physiology
Larva / pathogenicity
Plant Growth Regulators / metabolism*
Plant Proteins / genetics,  metabolism
Seedling / metabolism*,  parasitology*
Triticum / metabolism*,  parasitology*
Virulence
Grant Support
ID/Acronym/Agency:
P20 MD001089/MD/NCMHD NIH HHS
Chemical
Reg. No./Substance:
0/Plant Growth Regulators; 0/Plant Proteins

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Characteristics of Cimex lectularius (Hemiptera: Cimicidae), infestation and dispersal in a high-ris...
Next Document:  Potential of suction traps as a monitoring tool for Aphis glycines (Hemiptera: Aphididae) in soybean...