Temperature-induced changes in lipid composition and transition temperature of flight muscle mitochondria of

Downer, Roger; Kallapur, V. L.

doi:10.1016/0306-4565(81)90005-x

Cited by 22 publications

(13 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cholesterol has been implicated in the homeoviscous response and it is possible that a gradient of membrane cholesterol content exists along the retia. Although some studies suggest that cholesterol levels do not change with temperature acclimation (6), others show a positive correlation between acclimation temperature and the cholesterolto-phospholipid ratio (10). Cholesterol is known to spread out the transition between the fluid and gel phases of lipid bilayers, thereby buffering against dramatic changes in membrane fluidity that would otherwise accompany a temperature change (27).…”

Section: Discussionmentioning

confidence: 99%

No evidence for homeoviscous adaptation in a heterothermic tissue: tuna heat exchangers

Fudge

Stevens

Ballantyne

1998

American Journal of Physiology-Regulatory, Integrative and Comp

View full text Add to dashboard Cite

Many poikilotherms are known to adjust the membrane composition of their cells in response to a temperature change so that membrane fluidity, and therefore function, is conserved. Such compensatory changes in membrane composition are considered “homeoviscous adaptations.” In this study, we examined a heterothermic tissue, the visceral rete mirabile of the bluefin tuna, for evidence of homeoviscous adaptation. We measured the proportions of phospholipid fatty acids and phospholipid head groups as a function of position along the rete thermal gradient, which has been estimated to be ∼10°C. We found no effect of position along the rete on the composition of either phospholipid fatty acids or head groups. Our results were unexpected in light of our previous demonstration of compensation of metabolic enzyme activity in the same tissue. The lack of evidence for a homeoviscous response may be due to the fluctuating nature of the thermal gradient along the visceral retia; i.e., membranes may be adapted to a eurythermal existence rather than being fine-tuned to a particular temperature.

show abstract

Section: Discussionmentioning

confidence: 99%

No evidence for homeoviscous adaptation in a heterothermic tissue: tuna heat exchangers

Fudge

Stevens

Ballantyne

1998

American Journal of Physiology-Regulatory, Integrative and Comp

View full text Add to dashboard Cite

show abstract

“…Similarly, both the onset and completion of phase separation (detected with a 5-doxylstearate ESR probe) in phospholipids of the winter-active crustacean C. vicinus were shifted to lower temperatures in winter (20 ° and 10° C) than summer animals (30° and 10° C) and transitions evident in liver phospholipids from summer populations of the tropical fish Channa punctatus disappeared following acclimation to 16° C (Dutta et al 1985). The gel/fluid transition in flight muscle mitochondria of Schistocerca (as detected by X-ray diffraction) also declined from + 2 ° to -3 ° C following acclimation from 45 ° to 31 ° C (Downer and Kallapur 1981).…”

Section: Homeophasic Adaptation Oj Membrane Structurementioning

confidence: 90%

“…Consequently, addition of cholesterol to a fluid bilayer reduces the permeability to glucose and cations and inhibits both Na + IK + -and sarcoplasmic reticular ATPase activities (Madden et al 1979). Thus, in those cases [including muscle mitochondria (Wodtke 1978), hepatic microsomes, and red blood cell membranes of carp (Wodtke 1983) and flight muscle mitochondria of Schistocerca (Downer and Kallapur 1981)] where cholesterol content is positively correlated with growth temperature, cholesterol may act to stabilize membrane structure at high temperatures and in this manner contribute to thermal compensation of membrane function. However, membrane cholesterol levels do not vary in a consistent manner with acclimation temperature and some membranes [including synaptic and myelin membranes of goldfish brain Cossins 1977)] are not influenced at all by changes in growth temperature.…”

Section: Cholesterol Regulation As a Means Oj Homeoviscous Adaptationmentioning

confidence: 95%

Cold Adaptation in Ectotherms: Regulation of Membrane Function and Cellular Metabolism

Hazel

1989

Advances in Comparative and Environmental Physiology

View full text Add to dashboard Cite

“…However, it is not known if the phospholipid structural properties of housefly mitochondrial membranes change in response to a change in temperature. Reports of phospholipid compositional changes in the mitochondrial membranes of blowfly (Danks and Tribe 1979) and Locust (Downer and Kallapur 1981;Kallapur et al 1982) in response to altered growth temperatures suggest that insects may have the ability to alter mitochondrial phospholipid structure. The present study investigates this possibility using steady-state measurements of the fluorescence polarization of 1,6-diphenyl-l,3,5-hexatriene (DPH) incorporated into the flight muscle mitochondrial membranes of adult houseflies reared at 15 and 25°C.…”

mentioning

confidence: 98%

Effect of growth temperature on the steady-state fluorescence polarization of 1,6-diphenyl-1,3,5-hexatriene incorporated into flight muscle mitochondrial membranes of houseflies (Musca domestica)

Plaskon¹,

Anderson²

1984

Can. J. Zool.

View full text Add to dashboard Cite

PLASKON, R. R., and G. L. ANDERSON. 1984. Effect of growth temperature on the steady-state fluorescence polarization of 1,6-diphenyl-l,3,5-hexatriene incorporated into flight muscle mitochondrial membranes of houseflies (Musca dornestica). Can. J . Zool. 62: 1747-1750. This study reports steady-state measurements of the fluorescence polarization of 1,6-diphenyl-l,3,5-hexatriene (DPH) within flight muscle mitochondrial membrane fragments from adult houseflies (Musca dornestica) grown at 15 and 25°C. Growth temperature of the houseflies is shown to have no effect on the polarization of DPH's fluorescence, whereas the temperature sensitivity of fluorescence polarization (A polarization) is 16% higher in flies grown at 25°C than in those grown at 15°C. Since the fluorescence polarization of DPH gives an indication of the degree of order within membranes, these results suggest that houseflies have the ability to alter the temperature dependence of their flight muscle mitochondrial membrane structure in response to a change in temperature. Little attention has been directed to the effects of growth temperature on A polarization values and this study suggests a procedure for detecting the existence of changes in this quantity.PLASKON, R. R., et G. L. ANDERSON. 1984. Effect of growth temperature on the steady-state fluorescence polarization of 1,6-diphenyl-l,3,5-hexatriene incorporated into flight muscle mitochondrial membranes of houseflies (Musca dornestica). Can. J . Zool. 62: 1747-1750. On trouvera dans cette Ctude des mesures, a l'dtat d'kquilibre, de la polarisation de la fluorescence du 1,6-diphdnyl-1,3,5-hexatrikne dans des fragments des membranes des mitochondries des muscles du vol chez des mouches domestiques (Musca dornestica) Clevdes a 15 et a 25°C. La tempkrature d'klevage des mouches n'a pas d'effet sur la polarisation de la fluorescence du produit, mais la sensibilitd de la polarisation de la fluorescence a la temphature (A polarisation) est 16% plus dlevde chez les mouches dlevCes a 25°C que chez les mouches dlevdes a 15°C. La polarisation de la fluorescence du 1,6-diphdnyl-1,3,5-hexatrikne donne une indication du degrd d'organisation qui prCvaut a l'intkrieur des membranes; les rdsultats semblent donc indiquer que les mouches domestiques sont capables de modifier la dkpendance a 1'Cgard de la tempkrature de la structure des membranes mitochondriques de leurs muscles de vol lors d'un changement de tempkrature. Les effets de la tempdrature de croissance sur la A polarisation ont it6 peu dtudids et on trouvera ici la description d'une mithode de dktection des changements de valeur de ce paramktre.[Traduit par le journal]Poikilotherms exhibit various physiological alterations in response to a change in growth temperature. Many of these changes have been interpreted as mechanisms for the maintenance of physiological processes over a wide range of environmental temperatures (Precht et al. 1973;Pohl 1976). Several attempts to determine the exact nature of these mechanisms have focused on the effects of tempera...

show abstract

Temperature-induced changes in lipid composition and transition temperature of flight muscle mitochondria of

Cited by 22 publications

References 34 publications

No evidence for homeoviscous adaptation in a heterothermic tissue: tuna heat exchangers

No evidence for homeoviscous adaptation in a heterothermic tissue: tuna heat exchangers

Cold Adaptation in Ectotherms: Regulation of Membrane Function and Cellular Metabolism

Effect of growth temperature on the steady-state fluorescence polarization of 1,6-diphenyl-1,3,5-hexatriene incorporated into flight muscle mitochondrial membranes of houseflies (Musca domestica)

Contact Info

Product

Resources

About