Control of Glycolytic Oscillations by Temperature

Mair, Thomas; Warnke, Christian; Tsuji, Kinko; Müller, Stefan

doi:10.1529/biophysj.104.043398

Cited by 29 publications

(14 citation statements)

References 32 publications

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“…Such differences in temperature-dependent regulation can be responsible for the accumulation of the dark pool under higher temperatures and depletion under lower temperatures. Analogously, partial steps of photosynthesis and glycolysis are known to be regulated differently by temperature, resulting in accumulation and depletion of certain photosynthetic intermediate pools (Pastenes and Horton, 1996) and in oscillations in glycolysis intermediates (Mair et al, 2005) under different temperatures.…”

Section: The Mep Pathway Is Temporarily Reactivated In the Darkmentioning

confidence: 99%

Induction of a Longer Term Component of Isoprene Release in Darkened Aspen Leaves: Origin and Regulation under Different Environmental Conditions

et al. 2011

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After darkening, isoprene emission continues for 20 to 30 min following biphasic kinetics. The initial dark release of isoprene (postillumination emission), for 200 to 300 s, occurs mainly at the expense of its immediate substrate, dimethylallyldiphosphate (DMADP), but the origin and controls of the secondary burst of isoprene release (dark-induced emission) between approximately 300 and 1,500 s, are not entirely understood. We used a fast-response gas-exchange system to characterize the controls of dark-induced isoprene emission by light, temperature, and CO 2 and oxygen concentrations preceding leaf darkening and the effects of short light pulses and changing gas concentrations during dark-induced isoprene release in hybrid aspen (Populus tremula 3 Populus tremuloides). The effect of the 2-C-methyl-D-erythritol-4-phosphate pathway inhibitor fosmidomycin was also investigated. The integral of postillumination isoprene release was considered to constitute the DMADP pool size, while the integral of dark-induced emission was defined as the "dark" pool. Overall, the steady-state emission rate in light and the maximum dark-induced emission rate responded similarly to variations in preceding environmental drivers and atmospheric composition, increasing with increasing light, having maxima at approximately 40°C and close to the CO 2 compensation point, and were suppressed by lack of oxygen. The DMADP and dark pool sizes were also similar through their environmental dependencies, except for high temperatures, where the dark pool significantly exceeded the DMADP pool. Isoprene release could be enhanced by short lightflecks early during dark-induced isoprene release, but not at later stages. Fosmidomycin strongly suppressed both the isoprene emission rates in light and in the dark, but the dark pool was only moderately affected. These results demonstrate a strong correspondence between the steady-state isoprene emission in light and the dark-induced emission and suggest that the dark pool reflects the total pool size of 2-C-methyl-D-erythritol-4-phosphate pathway metabolites upstream of DMADP. These metabolites are converted to isoprene as soon as ATP and NADPH become available, likely by dark activation of chloroplastic glycolysis and chlororespiration.

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Section: The Mep Pathway Is Temporarily Reactivated In the Darkmentioning

confidence: 99%

Induction of a Longer Term Component of Isoprene Release in Darkened Aspen Leaves: Origin and Regulation under Different Environmental Conditions

et al. 2011

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“…Additional to intrinsic characteristics of the model, external features, like intracellular temperature changes, have been recognized as a feedback control. For example, Mair et al 39 studied the entrainment of yeast glycolytic oscillations by applying thermal pulses and thermal gradients. They found that temperature acts as a controller of glycolytic oscillations, being the PFK enzyme sensitive to thermal changes.…”

Section: Figurementioning

confidence: 99%

Transition from Thermokinetic to Chemical Instabilities in a Modified Sal’nikov Model

Ochoa-Botache¹

2018

J. Braz. Chem. Soc.

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Traditionally, thermokinetic and chemical oscillations have been studied independently, but in cellular media recent studies have shown that cell's temperature is not uniform. Thus, on this context it is possible to inquire about the influence of thermal effects on chemical oscillatory behavior and vice versa. To this end, in this paper we propose a dynamical model based on a modified Sal'nikov oscillator that can address both kinds of oscillatory behavior (thermokinetic and chemical). We found that the system modeled can jump from thermal oscillations to mixed chemical-thermal oscillations through a transition or bifurcation parameter. Thermokinetic oscillations are well defined in a limit cycle, while chemical-thermal oscillations appear in the form of a burst. The model could be useful in explaining biochemical energy recovery under cellular stress conditions.

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“…GAPDH exhibits high temperature sensitivity (Mair et al, 2005) and the inhibition of this enzyme affects the photosynthetic process, by causing a secondary photoinhibitory response in PSII (Ralph, 1999) that may be the cause of the decrease in photosynthetic activity. It can also reduce energy generation if glycolysis is inhibited and ATP levels decrease.…”

Section: Glyceraldehyde-3-phosphate Dehydrogenasementioning

confidence: 99%

Expressed sequence tags from heat-shocked seagrass Zostera noltii (Hornemann) from its southern distribution range

et al. 2011

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Predicted global climate change threatens the distributional ranges of species worldwide. We identified genes expressed in the intertidal seagrass Zostera noltii during recovery from a simulated low tide heat-shock exposure. Five Expressed Sequence Tag (EST) libraries were compared, corresponding to four recovery times following sub-lethal temperature stress, and a non-stressed control. We sequenced and analyzed 7009 sequence reads from 30min, 2h, 4h and 24h after the beginning of the heat-shock (AHS), and 1585 from the control library, for a total of 8594 sequence reads. Among 51 Tentative UniGenes (TUGs) exhibiting significantly different expression between libraries, 19 (37.3%) were identified as 'molecular chaperones' and were over-expressed following heat-shock, while 12 (23.5%) were 'photosynthesis TUGs' generally under-expressed in heat-shocked plants. A time course analysis of expression showed a rapid increase in expression of the molecular chaperone class, most of which were heat-shock proteins; which increased from 2 sequence reads in the control library to almost 230 in the 30min AHS library, followed by a slow decrease during further recovery. In contrast, 'photosynthesis TUGs' were under-expressed 30min AHS compared with the control library, and declined progressively with recovery time in the stress libraries, with a total of 29 sequence reads 24h AHS, compared with 125 in the control. A total of 4734 TUGs were screened for EST-Single Sequence Repeats (EST-SSRs) and 86 microsatellites were identified.

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Control of Glycolytic Oscillations by Temperature

Cited by 29 publications

References 32 publications

Induction of a Longer Term Component of Isoprene Release in Darkened Aspen Leaves: Origin and Regulation under Different Environmental Conditions

Induction of a Longer Term Component of Isoprene Release in Darkened Aspen Leaves: Origin and Regulation under Different Environmental Conditions

Transition from Thermokinetic to Chemical Instabilities in a Modified Sal’nikov Model

Expressed sequence tags from heat-shocked seagrass Zostera noltii (Hornemann) from its southern distribution range

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