Document Detail


Hydrogen sulfide exposure increases desiccation tolerance in Drosophila melanogaster.
MedLine Citation:
PMID:  20670629     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
Hydrogen sulfide (H(2)S) has been shown to effect physiological alterations in several animals, frequently leading to an improvement in survival in otherwise lethal conditions. In the present paper, a volatility bioassay system was developed to evaluate the survivorship of Drosophila melanogaster adults exposed to H(2)S gas that emanated from a K(2)S donor. Using this bioassay system, we found that H(2)S exposure significantly increased the survival of flies under arid and food-free conditions, but not under humid and food-free conditions. This suggests that H(2)S plays a role in desiccation tolerance but not in nutritional stress alleviation. To further confirm the suggestion, the mRNA levels of two desiccation tolerance-related genes Frost and Desat2, and a starvation-related gene Smp-30, from the control and treated flies were measured by quantitative real-time PCR. These genes were up-regulated within 2h when the flies transferred to the arid and food-free bioassay system. Addition of H(2)S further increased Frost and Desat2 mRNA levels, in contrast to Smp-30. Thus, our molecular results were consistent with our bioassay findings. Because of the molecular and genetic tools available for Drosophila, the fly will be a useful system for determining how H(2)S regulates various physiological alterations.
Authors:
Jian-Feng Zhong; Shu-Ping Wang; Xiao-Qin Shi; Li-li Mu; Guo-Qing Li
Related Documents :
2332399 - The establishment and persistence of food preferences in lambs exposed to selected foods.
19531369 - Refining the threshold of toxicological concern (ttc) for risk prioritization of trace ...
11258869 - "total" and respirable dust exposures in the u.s. carbon black manufacturing industry.
11462149 - Environmental residues and biomonitoring estimates of human insecticide exposure from t...
14612299 - Exposure to inhalable flour dust in canadian flour mills.
10853289 - Exposures to jet fuel and benzene during aircraft fuel tank repair in the u.s. air force.
19810019 - Influence of thermal processing on ige reactivity to lentil and chickpea proteins.
10322509 - Food exploitation: searching for the optimal joining policy.
10489089 - Access to white bread as an intervention for chronic ruminative vomiting.
Publication Detail:
Type:  Journal Article     Date:  2010-08-01
Journal Detail:
Title:  Journal of insect physiology     Volume:  56     ISSN:  1879-1611     ISO Abbreviation:  J. Insect Physiol.     Publication Date:  2010 Dec 
Date Detail:
Created Date:  2010-10-29     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2985080R     Medline TA:  J Insect Physiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  1777-82     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Ltd. All rights reserved.
Affiliation:
Department of Entomology, College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, Ministry of Agriculture, Nanjing 210095, China.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

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


Previous Document:  Trypanosoma cruzi I genotypes in different geographical regions and transmission cycles based on a m...
Next Document:  Induction of oviposition by injection of male-derived extracts in two Callosobruchus species.