ArticleJournal of bioenergetics and biomembranes2010
Mitochondria from the salt-tolerant yeast Debaryomyces hansenii (halophilic organelles?).
Article in Journal of bioenergetics and biomembranes, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Hog1 MAP kinase modulates early riboflavin accumulation under low-pH and saline conditions inFrontiers in microbiology · 2026Article
- Evolution and maintenance of mtDNA gene content across eukaryotes.The Biochemical journal · 2024Review
- Thriving in Oxygen While Preventing ROS Overproduction: No Two Systems Are Created Equal.Frontiers in physiology · 2022Review
- Coupling/Uncoupling Reversibility in Isolated Mitochondria fromLife (Basel, Switzerland) · 2021Article
- Adaptive mitochondrial response of the whiteleg shrimp Litopenaeus vannamei to environmental challenges and pathogens.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2021Article
- Overlapping responses between salt and oxidative stress in Debaryomyces hansenii.World journal of microbiology & biotechnology · 2019Article
- Properties of the Permeability Transition of Pea Stem Mitochondria.Frontiers in physiology · 2018Article
- High Osmolarity Environments Activate the Mitochondrial Alternative Oxidase in Debaryomyces Hansenii.PloS one · 2017Article
- The Saccharomyces cerevisiae mitochondrial unselective channel behaves as a physiological uncoupling system regulated by Ca2+, Mg2+, phosphate and ATP.Journal of bioenergetics and biomembranes · 2015Article
- Physiological uncoupling of mitochondrial oxidative phosphorylation. Studies in different yeast species.Journal of bioenergetics and biomembranes · 2011Article
- The mitochondrial permeability transition from yeast to mammals.FEBS letters · 2010Review
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The yeast Debaryomyces hansenii is considered a marine organism. Sea water contains 0.6 M Na(+) and 10 mM K(+); these cations permeate into the cytoplasm of D. hansenii where proteins and organelles have to adapt to high salt concentrations. The effect of high concentrations of monovalent and divalent cations on isolated mitochondria from D. hansenii was explored. As in S. cerevisiae, these mitochondria underwent a phosphate-sensitive permeability transition (PT) which was inhibited by Ca(2+) or Mg(2+). However, D. hansenii mitochondria require higher phosphate concentrations to inhibit PT. In regard to K(+) and Na(+), and at variance with mitochondria from all other sources known, these monovalent cations promoted closure of the putative mitochondrial unspecific channel. This was evidenced by the K(+)/Na(+)-promoted increase in: respiratory control, transmembrane potential and synthesis of ATP. PT was equally sensitive to either Na(+) or K(+). In the presence of propyl-gallate PT was still observed while in the presence of cyanide the alternative pathway was not active enough to generate a Delta Psi due to a low AOX activity. In D. hansenii mitochondria K(+) and Na(+) optimize oxidative phosphorylation, providing an explanation for the higher growth efficiency in saline environments exhibited by this yeast.
Indexed as
Identifiers
20091106What OpenQuestion holds
Registered trials
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