Journal
JOURNAL OF EXPERIMENTAL BIOLOGY
Volume 217, Issue 1, Pages 119-128Publisher
COMPANY BIOLOGISTS LTD
DOI: 10.1242/jeb.090571
Keywords
Cyclic AMP; Cyclic GMP; Calcium; Stress; D. melanogaster; Malpighian tubule
Categories
Funding
- Biotechnology and Biological Sciences Research Council (UK) [BB/G020620/1, BB/J002143/1, BB/E011438/1]
- Biotechnology and Biological Sciences Research Council [BB/G020620/1, BB/L002647/1, BB/J002143/1, BB/E011438/1] Funding Source: researchfish
- BBSRC [BB/E011438/1, BB/G020620/1, BB/L002647/1, BB/J002143/1] Funding Source: UKRI
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Insects successfully occupy most environmental niches and this success depends on surviving a broad range of environmental stressors including temperature, desiccation, xenobiotic, osmotic and infection stress. Epithelial tissues play key roles as barriers between the external and internal environments and therefore maintain homeostasis and organismal tolerance to multiple stressors. As such, the crucial role of epithelia in organismal stress tolerance cannot be underestimated. At a molecular level, multiple cell-specific signalling pathways including cyclic cAMP, cyclic cGMP and calcium modulate tissue, and hence, organismal responses to stress. Thus, epithelial cell-specific signal transduction can be usefully studied to determine the molecular mechanisms of organismal stress tolerance in vivo. This review will explore cell signalling modulation of stress tolerance in insects by focusing on cell signalling in a fluid transporting epithelium - the Malpighian tubule. Manipulation of specific genes and signalling pathways in only defined tubule cell types can influence the survival outcome in response to multiple environmental stressors including desiccation, immune, salt (ionic) and oxidative stress, suggesting that studies in the genetic model Drosophila melanogaster may reveal novel pathways required for stress tolerance.
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