Evaluation of the importance of lactate for the activation of ethanolic fermentation in lettuce roots in anoxia

@article{KatoNoguchi2000EvaluationOT,
  title={Evaluation of the importance of lactate for the activation of ethanolic fermentation in lettuce roots in anoxia},
  author={H. Kato‐Noguchi},
  journal={Physiologia Plantarum},
  year={2000},
  volume={109},
  pages={28-33}
}
According to the Davies–Roberts hypothesis, plants primarily respond to oxygen limitation by a burst of lactate production and the resulting pH drop in the cytoplasm activates ethanolic fermentation. To evaluate this system in lettuce (Lactuca sativa L.), seedlings were subjected to anoxia and in vitro activities of alcohol dehydrogenase (ADH, EC 1.1.1.1), pyruvate decarboxylase (PDC, EC 4.1.1.1) and lactate dehydrogenase (LDH, EC 1.1.1.27) and concentrations of ethanol, acetaldehyde and… Expand
Pyruvate metabolism in rice coleoptiles under anaerobiosis
TLDR
The results suggest that the potential carbon flux from pyruvate to ethanol, lactate and alanine in anoxic coleoptiles in rice seedlings subjected to anoxic stress may be much greater than the potential flux from Pyrolysis to lactate, which is currently estimated to be 92, 1 and 7% of the total carbon flux. Expand
Sugar utilization and anoxia tolerance in rice roots acclimated by hypoxic pretreatment.
TLDR
The results show that rice roots are able to utilize the set of enzymes involved in the metabolism of soluble sugars under anoxia, and the ability to maintain an active fermentative metabolism for production of ATP by fueling the glycolytic pathway with fermentable carbohydrate is probably greater in H-PT than in N-PT roots. Expand
Effect of low temperature on ethanolic fermentation in rice seedlings.
TLDR
Production of ethanol by ethanolic fermentation may lead to low-temperature adaptation in rice plants by altering the physical properties of membrane lipids, known to prevent lipid degradation in plant membrane, and increased membrane-lipid fluidization. Expand
Activities of enzymes of fermentation pathways in the leaves and roots of contrasting cultivars of sorghum (Sorghum Bicolor L.) during flooding
TLDR
It is apparent that roots and leaves of flood tolerant variety tends to attain greater capacity to perform reactions of various fermentation pathways to sustain production of ATP under flooded conditions. Expand
Waterlogging-induced changes in fermentative metabolism in roots and nodules of soybean genotypes
TLDR
Fundacep RR 53 was more responsive to the metabolic effects caused by hypoxia and post-hypoxia than BRS Macota, and it is likely that these characteristics contribute positively to improving adaptation to oxygen deficiency. Expand
Ethanolic fermentation and anoxia tolerance in four rice cultivars.
TLDR
The results suggest that the ability to increase ethanolic fermentation may be one of the determinants in anoxia tolerance of rice coleoptiles. Expand
The catalytic direction of pyrophosphate:fructose 6-phosphate 1-phosphotransferase in rice coleoptiles in anoxia
The catalytic direction of pyrophosphate:fructose-6-phosphate 1-phosphotransferase (PFP; EC 2.7.1.90) in coleoptiles of rice (Oryza sativa L.) seedlings subjected to anoxia stress is discussed. TheExpand
Hypoxic induction of anoxia tolerance in Avena coleoptiles
TLDR
The present results are consistent with the results that were found in roots of several plants, suggesting that the mechanism in hypoxic acclimation to anoxia implicated in their roots may act in Avena coleoptiles. Expand
Hypoxic Induction of Anoxia Tolerance in Rice Coleoptiles
TLDR
The results are consistent with the results found in roots of several plants, suggesting that the mechanism in hypoxic acclimation to anoxia implicated in their roots may act in the rice coleoptiles. Expand
Effect of root-applied spermidine on growth and respiratory metabolism in roots of cucumber (Cucumis sativus) seedlings under hypoxia
TLDR
Application of Spd to hypoxic nutrient solution promoted conversion of free Put into free Spd and Spm as well as soluble conjugated and insoluble bound PAs, further enhanced IDH and SDH activities, and inhibited ethanol fermentation and lactate fermentation, resulting in increased ATP content and eventually enhanced tolerance of cucumber plants to root-zone hypoxia. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 36 REFERENCES
Anoxia tolerance in tobacco roots: effect of overexpression of pyruvate decarboxylase
TLDR
The authors favour a model in which the flux through the pathway is regulated by substrate availability, and rapid utilisation of carbohydrate reserves enhanced premature cell death in the transgenics while replenishment of carbohydrates improved survival under anoxia. Expand
L-Lactate dehydrogenase from leaves of higher plants. Kinetics and regulation of the enzyme from lettuce (Lactuca sativa L).
  • T. Betsche
  • Biology, Medicine
  • The Biochemical journal
  • 1981
TLDR
A function of leaf L-lactate dehydrogenase is proposed as a component of the systems regulating the cellular pH and/or controlling the concentration of reducing equivalents in the cytoplasm of leaf cells. Expand
The Role of Sugars, Hexokinase, and Sucrose Synthase in the Determination of Hypoxically Induced Tolerance to Anoxia in Tomato Roots
TLDR
Sucrose, but not glucose or fructose, was able to sustain glycolytic flux via the sucrose synthase pathway and allowed anoxic tolerance of acclimated roots and the ability of tomato roots to survive anoxia. Expand
Production and organ distribution of succinate in rice seedlings during anoxia
TLDR
1H-nuclear magnetic resonance spectroscopy is used to show that succinate is produced by rice seedlings subjected to anoxic conditions, suggesting its involvement in rice coleoptile elongation under anoxia. Expand
Lactic Acid efflux as a mechanism of hypoxic acclimation of maize root tips to anoxia.
TLDR
The presence of cycloheximide during pretreatment abolished this difference, suggesting that the greater efficiency of lactate efflux was linked to protein synthesis, and could account for the higher cytoplasmic pH values always found in pretreated tissues. Expand
Evidence for a Large and Sustained Glycolytic Flux to Lactate in Anoxic Roots of Some Members of the Halophytic Genus Limonium
TLDR
Investigation of the fermentative metabolism in roots of species from the halophytic genus Limonium (Plumbaginaceae) found the rate of lactate fermentation was exceptionally high, and in the latter two species the 14C flux to lactate exceeded that to ethanol. Expand
Long-Term Anaerobic Metabolism in Root Tissue (Metabolic Products of Pyruvate Metabolism)
TLDR
The observations suggest that the long-term adaptations to hypoxic conditions may be quite different than the more well-characterized short-term adaptation. Expand
Ethanolic fermentation in transgenic tobacco expressing Zymomonas mobilis pyruvate decarboxylase.
TLDR
It is shown that aerobic fermentation takes place when the respiratory system is inhibited, and results indicate that anaerobic transcription is triggered not by the metabolic consequences of oxygen limitation, but directly through an oxygen‐sensing system. Expand
Glycolytic Flux and Hexokinase Activities in Anoxic Maize Root Tips Acclimated by Hypoxic Pretreatment
TLDR
It was found that phosphorylation of hexoses by kinases was a major limiting step of glycolysis in anoxia and there was no evidence of induction during the hypoxic pretreatment of isoenzymes better adapted to the anoxic cellular environment. Expand
Induction of lactate dehydrogenase isozymes by oxygen deficit in barley root tissue.
TLDR
Neither hypoxic induction of LDH, nor lactate secretion by induced roots, is predicted from the Davies-Roberts hypothesis, which holds that lactate glycolysis ceases soon after the onset of hypoxia due to acidosis brought about by lactate accumulation in the cytoplasm. Expand
...
1
2
3
4
...