Hand 1988 Science: Difference between revisions
Bader Helga (talk | contribs) No edit summary |
Bader Helga (talk | contribs) No edit summary |
||
Line 7: | Line 7: | ||
|abstract=Continuous measurement of heat dissipation from brine shrimp embryos during reversible transitions from aerobic development to anaerobic dormancy demonstrates a primary role for intracellular ''p''H (''p''Hi) in this metabolic switching. Artificially elevating the depressed ''p''Hi during anoxia by adding ammonia markedly reactivates metabolism, as judged by increases in heat dissipation, trehalose catabolism, and the ratio of adenosine triphosphate to adenosine diphosphate. Energy flow during anaerobic dormancy is suppressed to 2.4 percent of aerobic values, which is the lowest percentage thus far reported for euryoxic animals. Use of diguanosine tetraphosphate stores cannot account for this observed heat dissipation. Thus, mobilizing trace amounts of trehalose may explain the energy metabolism during quiescence. | |abstract=Continuous measurement of heat dissipation from brine shrimp embryos during reversible transitions from aerobic development to anaerobic dormancy demonstrates a primary role for intracellular ''p''H (''p''Hi) in this metabolic switching. Artificially elevating the depressed ''p''Hi during anoxia by adding ammonia markedly reactivates metabolism, as judged by increases in heat dissipation, trehalose catabolism, and the ratio of adenosine triphosphate to adenosine diphosphate. Energy flow during anaerobic dormancy is suppressed to 2.4 percent of aerobic values, which is the lowest percentage thus far reported for euryoxic animals. Use of diguanosine tetraphosphate stores cannot account for this observed heat dissipation. Thus, mobilizing trace amounts of trehalose may explain the energy metabolism during quiescence. | ||
|keywords=Twin-Flow | |keywords=Twin-Flow | ||
|mipnetlab= | |mipnetlab=AT Innsbruck Gnaiger E, US LA Baton Rouge Hand SC | ||
}} | }} | ||
{{Labeling | {{Labeling |
Revision as of 13:13, 20 March 2015
Hand SC, Gnaiger E (1988) Anaerobic dormancy quantified in Artemia embryos: A calorimetric test of the control mechanism. Science 239:1425-7. |
Hand SC, Gnaiger E (1988) Science
Abstract: Continuous measurement of heat dissipation from brine shrimp embryos during reversible transitions from aerobic development to anaerobic dormancy demonstrates a primary role for intracellular pH (pHi) in this metabolic switching. Artificially elevating the depressed pHi during anoxia by adding ammonia markedly reactivates metabolism, as judged by increases in heat dissipation, trehalose catabolism, and the ratio of adenosine triphosphate to adenosine diphosphate. Energy flow during anaerobic dormancy is suppressed to 2.4 percent of aerobic values, which is the lowest percentage thus far reported for euryoxic animals. Use of diguanosine tetraphosphate stores cannot account for this observed heat dissipation. Thus, mobilizing trace amounts of trehalose may explain the energy metabolism during quiescence. โข Keywords: Twin-Flow
โข O2k-Network Lab: AT Innsbruck Gnaiger E, US LA Baton Rouge Hand SC
Labels: MiParea: Respiration, Comparative MiP;environmental MiP, Developmental biology
Stress:Hypoxia Organism: Artemia
Preparation: Intact organism
Regulation: ADP, ATP, pH Coupling state: ROUTINE
CaloRespirometry, Twin-Flow