World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Plos One : Exposure to Bacterial Signals Does Not Alter Pea Aphids’ Survival Upon a Second Challenge or Investment in Production of Winged Offspring, Volume 8

By Leulier, François

Click here to view

Book Id: WPLBN0003948251
Format Type: PDF eBook :
File Size:
Reproduction Date: 2015

Title: Plos One : Exposure to Bacterial Signals Does Not Alter Pea Aphids’ Survival Upon a Second Challenge or Investment in Production of Winged Offspring, Volume 8  
Author: Leulier, François
Volume: Volume 8
Language: English
Subject: Journals, Science, Medical Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary)
Historic
Publication Date:
Publisher: Plos

Citation

APA MLA Chicago

Leulier, F. (n.d.). Plos One : Exposure to Bacterial Signals Does Not Alter Pea Aphids’ Survival Upon a Second Challenge or Investment in Production of Winged Offspring, Volume 8. Retrieved from http://netlibrary.net/


Description
Description : Pea aphids have an obligate nutritional symbiosis with the bacteria Buchnera aphidicola and frequently also harbor one or more facultative symbionts. Aphids are also susceptible to bacterial pathogen infections, and it has been suggested that aphids have a limited immune response towards such pathogen infections compared to other, more well-studied insects. However, aphids do possess at least some of the genes known to be involved in bacterial immune responses in other insects, and immune-competent hemocytes. One possibility is that immune priming with microbial elicitors could stimulate immune protection against subsequent bacterial infections, as has been observed in several other insect systems. To address this hypothesis we challenged aphids with bacterial immune elicitors twenty-four hours prior to live bacterial pathogen infections and then compared their survival rates to aphids that were not pre-exposed to bacterial signals. Using two aphid genotypes, we found no evidence for immune protection conferred by immune priming during infections with either Serratia marcescens or with Escherichia coli. Immune priming was not altered by the presence of facultative, beneficial symbionts in the aphids. In the absence of inducible immune protection, aphids may allocate energy towards other defense traits, including production of offspring with wings that could escape deteriorating conditions. To test this, we monitored the ratio of winged to unwinged offspring produced by adult mothers of a single clone that had been exposed to bacterial immune elicitors, to live E. coli infections or to no challenge. We found no correlation between immune challenge and winged offspring production, suggesting that this mechanism of defense, which functions upon exposure to fungal pathogens, is not central to aphid responses to bacterial infections.

 

Click To View

Additional Books


  • Plos One : Homing Pigeons Respond to Tim... (by )
  • Plos One : the Effect of Deltamethrin-tr... (by )
  • Plos One : Induction of Glycerol Synthes... (by )
  • Plos One : Patterns of Cross-continental... (by )
  • Plos One : First Genome-wide Association... (by )
  • Plos One : Crosstalk Between Thyroid Hor... (by )
  • Plos One : Factors Associated with Post-... (by )
  • Plos One : Higher Chlamydia Trachomatis ... (by )
  • Plos One : Pkcd as a Regulator for Tgfb1... (by )
  • Plos One : Myeloperoxidase Polymorphism,... (by )
  • Plos One : Mucin Deficiency Causes Funct... (by )
  • Plos One : Randomised Clinical Trial Inv... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.