Matches in SemOpenAlex for { <https://semopenalex.org/work/W1989469350> ?p ?o ?g. }
Showing items 1 to 90 of
90
with 100 items per page.
- W1989469350 endingPage "167" @default.
- W1989469350 startingPage "155" @default.
- W1989469350 abstract "In thin slices of leaves or potato tubers dehydrated in hypertonic sorbitol solutions, photosynthesis or dark-fixation of CO2 was almost fully inhibited at an osmotic potential of 50 bar, while respiratory oxygen uptake was less than 50% reduced. At the same osmotic potential, coupled oxidation of succinate and exogenous NADH by isolated leaf or tuber mitochondria suspended in media containing sorbitol or sucrose was between 20% and 60% inhibited. As in situ, oxidation was more sensitive to osmotic stress in tuber than in leaf mitochondrial preparations. Coupled oxidation of glycine or malate by leaf mitochondria was only insignificantly reduced when sorbitol was used as osmoticant, while strong inhibition was observed with sucrose or raffinose. The difference appeared to be due to penetration of sorbitol which caused less osmotic shrinkage of mitochondria thus preventing internal solutes from reaching injurious levels. Inhibition of substrate oxidation during osmotic dehydration of mitochondria decreased respiratory control and, less significantly, ADP/O ratios. In contrast to osmotic inhibition of photosynthesis in isolated chloroplasts (Kaiser et al., 1981 a), osmotic inhibition of respiratory activity was found to be reversible on transfer of mitochondria from a hypertonic to an isotonic medium. The low sensitivity of respiration to water stress in vivo compared to the higher sensitivity of photosynthesis is ascribed to different effects. In contrast to chloroplasts illuminated with high light intensities, mitochondria do not work at full capacity in situ. Inhibition of excess work capacity by water stress does not necessarily find expression in performance which reflects ATP turnover and slippage (basal electron transfer). In addition, entry of compatible neutral compounds such as monosaccharides into mitochondria may prevent excessive shrinkage during dehydration. In vitro, this reduces inhibition of respiratory reactions. Leaf mitochondria are more permeable to monosaccharides than are chloroplasts." @default.
- W1989469350 created "2016-06-24" @default.
- W1989469350 creator A5063215255 @default.
- W1989469350 creator A5080280317 @default.
- W1989469350 creator A5085512588 @default.
- W1989469350 date "1983-07-01" @default.
- W1989469350 modified "2023-10-02" @default.
- W1989469350 title "Respiratory Activities of Plant Mitochondria Under Osmotic Stress" @default.
- W1989469350 cites W1775749144 @default.
- W1989469350 cites W1969004278 @default.
- W1989469350 cites W1974907033 @default.
- W1989469350 cites W1976907208 @default.
- W1989469350 cites W1981326383 @default.
- W1989469350 cites W1993041851 @default.
- W1989469350 cites W2012079710 @default.
- W1989469350 cites W2030902156 @default.
- W1989469350 cites W2034542961 @default.
- W1989469350 cites W2046256391 @default.
- W1989469350 cites W2052965093 @default.
- W1989469350 cites W2054002642 @default.
- W1989469350 cites W2054445480 @default.
- W1989469350 cites W2119706051 @default.
- W1989469350 cites W2141529594 @default.
- W1989469350 cites W2159774817 @default.
- W1989469350 cites W2169806092 @default.
- W1989469350 cites W2178087201 @default.
- W1989469350 cites W2316494340 @default.
- W1989469350 cites W2396430470 @default.
- W1989469350 cites W3009458354 @default.
- W1989469350 cites W3181398045 @default.
- W1989469350 doi "https://doi.org/10.1016/s0044-328x(83)80041-5" @default.
- W1989469350 hasPublicationYear "1983" @default.
- W1989469350 type Work @default.
- W1989469350 sameAs 1989469350 @default.
- W1989469350 citedByCount "11" @default.
- W1989469350 crossrefType "journal-article" @default.
- W1989469350 hasAuthorship W1989469350A5063215255 @default.
- W1989469350 hasAuthorship W1989469350A5080280317 @default.
- W1989469350 hasAuthorship W1989469350A5085512588 @default.
- W1989469350 hasConcept C104317684 @default.
- W1989469350 hasConcept C117277713 @default.
- W1989469350 hasConcept C12554922 @default.
- W1989469350 hasConcept C168529131 @default.
- W1989469350 hasConcept C182215343 @default.
- W1989469350 hasConcept C183688256 @default.
- W1989469350 hasConcept C185592680 @default.
- W1989469350 hasConcept C2776779347 @default.
- W1989469350 hasConcept C2777977896 @default.
- W1989469350 hasConcept C2778597767 @default.
- W1989469350 hasConcept C28859421 @default.
- W1989469350 hasConcept C55493867 @default.
- W1989469350 hasConcept C59822182 @default.
- W1989469350 hasConcept C86803240 @default.
- W1989469350 hasConcept C9603476 @default.
- W1989469350 hasConceptScore W1989469350C104317684 @default.
- W1989469350 hasConceptScore W1989469350C117277713 @default.
- W1989469350 hasConceptScore W1989469350C12554922 @default.
- W1989469350 hasConceptScore W1989469350C168529131 @default.
- W1989469350 hasConceptScore W1989469350C182215343 @default.
- W1989469350 hasConceptScore W1989469350C183688256 @default.
- W1989469350 hasConceptScore W1989469350C185592680 @default.
- W1989469350 hasConceptScore W1989469350C2776779347 @default.
- W1989469350 hasConceptScore W1989469350C2777977896 @default.
- W1989469350 hasConceptScore W1989469350C2778597767 @default.
- W1989469350 hasConceptScore W1989469350C28859421 @default.
- W1989469350 hasConceptScore W1989469350C55493867 @default.
- W1989469350 hasConceptScore W1989469350C59822182 @default.
- W1989469350 hasConceptScore W1989469350C86803240 @default.
- W1989469350 hasConceptScore W1989469350C9603476 @default.
- W1989469350 hasIssue "2" @default.
- W1989469350 hasLocation W19894693501 @default.
- W1989469350 hasOpenAccess W1989469350 @default.
- W1989469350 hasPrimaryLocation W19894693501 @default.
- W1989469350 hasRelatedWork W174773649 @default.
- W1989469350 hasRelatedWork W1989469350 @default.
- W1989469350 hasRelatedWork W1997303299 @default.
- W1989469350 hasRelatedWork W2087737303 @default.
- W1989469350 hasRelatedWork W2181495190 @default.
- W1989469350 hasRelatedWork W2313429087 @default.
- W1989469350 hasRelatedWork W2412087464 @default.
- W1989469350 hasRelatedWork W2524106575 @default.
- W1989469350 hasRelatedWork W2581689422 @default.
- W1989469350 hasRelatedWork W3016886979 @default.
- W1989469350 hasVolume "111" @default.
- W1989469350 isParatext "false" @default.
- W1989469350 isRetracted "false" @default.
- W1989469350 magId "1989469350" @default.
- W1989469350 workType "article" @default.