Literature DB >> 24258500

Effects of pH and deuterium oxide on the heat-inactivation temperature of chloroplasts.

P S Venediktov1, A A Krivoshejeva.   

Abstract

The inactivation temperature for Hill activity and for the long-lived delayed fluorescence of isolated Pisum sativum L. chloroplasts was found to depend on pH, the maximal value being in the pH region 5-7. Salts increase the inactivation temperature by 4-7°C. Effects of D2O and some other substances that modify the thermostability of chloroplasts are dependent on pH. It is concluded that thermal denaturation of proteins is the most probable mechanism for heat inactivation of chloroplasts.

Entities:  

Year:  1984        PMID： 24258500     DOI： 10.1007/BF00402854

Source DB:  PubMed          Journal:  Planta        ISSN： 0032-0935            Impact factor:   4.116


  11 in total

1.  Preparation of an active, oxygen-evolving photosystem 2 particle from a blue-green alga.

Authors:  A C Stewart; D S Bendall
Journal:  FEBS Lett       Date:  1979-11-15       Impact factor: 4.124

2.  Photosynthetic light reactions in chemically fixed spinach thylakoids.

Authors:  U W Hallier; R B Park
Journal:  Plant Physiol       Date:  1969-04       Impact factor: 8.340

3.  Relative thermostability of the chloroplast envelope.

Authors:  G H Krause; K A Santarius
Journal:  Planta       Date:  1975-01       Impact factor: 4.116

4.  The influence of heating on the morphology and photochemical activity of isolated chloroplasts.

Authors:  Y G Molotkovsky; I M Zheskova
Journal:  Biochem Biophys Res Commun       Date:  1965-08-16       Impact factor: 3.575

5.  Ascorbate-supported NADP photoreduction by heated Euglena chloroplasts.

Authors:  S Katoh; A San Pietro
Journal:  Arch Biochem Biophys       Date:  1967-10       Impact factor: 4.013

6.  Effect of polyethylene glycol on heat inactivation of the Hill reaction.

Authors:  T Oku; G Tomita
Journal:  Biochem Biophys Res Commun       Date:  1971-08-20       Impact factor: 3.575

7.  Mechanism of protein stabilization by glycerol: preferential hydration in glycerol-water mixtures.

Authors:  K Gekko; S N Timasheff
Journal:  Biochemistry       Date:  1981-08-04       Impact factor: 3.162

8.  The protective effect of sugars on chloroplast membranes during temperature and water stress and its relationship to frost, desiccation and heat resistance.

Authors:  K A Santarius
Journal:  Planta       Date:  1973-06       Impact factor: 4.116

9.  Thermodynamics of polyol-induced thermal stabilization of chymotrypsinogen.

Authors:  K Gekko; T Morikawa
Journal:  J Biochem       Date:  1981-07       Impact factor: 3.387

10.  The influence of metal cations and pH on the heat sensitivity of photosynthetic oxygen evolution and chlorophyll fluorescence in spinach chloroplasts.

Authors:  E Weis
Journal:  Planta       Date:  1982-03       Impact factor: 4.116
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  3 in total

1.  High-temperature damage and acclimation of the photosynthetic apparatus : II. Effect of mono- and divalent cations and pH on the temperature sensitivity of some functional characteristics of chloroplasts isolated from heat-acclimated and non-acclimated bean plants.

Authors:  V Goltsev; I Yordanov; T Stoyanova; O Popov
Journal:  Planta       Date:  1987-04       Impact factor: 4.116

2.  High-temperature damage and acclimation of the photosynthetic apparatus : I. Temperature sensitivity of some photosynthetic parameters of chloroplasts isolated from acclimated and non-acclimated bean leaves.

Authors:  I Yordanov; V Goltsev; T Stoyanova; P Venediktov
Journal:  Planta       Date:  1987-04       Impact factor: 4.116

3.  Protection of photosynthetic O2 evolution against heat inactivation: the role of chloride, pH and coupling status.

Authors:  C Critchley; R K Chopra
Journal:  Photosynth Res       Date:  1988-02       Impact factor: 3.573
  3 in total

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