| Hydrogen sulfide exposure increases desiccation tolerance in Drosophila melanogaster. | |
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MedLine Citation:
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PMID: 20670629 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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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. |
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Authors:
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Jian-Feng Zhong; Shu-Ping Wang; Xiao-Qin Shi; Li-li Mu; Guo-Qing Li |
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Publication Detail:
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Type: Journal Article Date: 2010-08-01 |
Journal Detail:
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Title: Journal of insect physiology Volume: 56 ISSN: 1879-1611 ISO Abbreviation: J. Insect Physiol. Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2010-10-29 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 2985080R Medline TA: J Insect Physiol Country: England |
Other Details:
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Languages: eng Pagination: 1777-82 Citation Subset: IM |
Copyright Information:
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Copyright © 2010 Elsevier Ltd. All rights reserved. |
Affiliation:
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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. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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