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Literature DB >> 16657139

The osmotic behavior of corn mitochondria.

Abstract

The volume changes undergone by corn (Zea mays L.) mitochondria suspended in solutions of constant or varying osmolarity were studied. Within the range of osmotic pressure from 1.8 to 8.4 atmospheres, corn mitochondria behave as osmometers, if allowance is made for an osmotic "dead space" of about 6.9 mul/mg protein. The final equilibrium volume of mitochondria swollen in solutions containing both ribose and sucrose were shown to depend upon the concentration of impermeable solute (sucrose) present and not upon the concentration of ribose present. Osmotic reversibility was found for mitochondria swollen in isotonic solutions of KCI or ribose. The passive swelling of corn mitochondria may be due to the osmotic flow of water coupled to the diffusion of a permeable solute.

Entities: Chemical Species

Year: 1969 PMID： 16657139 PMCID： PMC396173 DOI： 10.1104/pp.44.6.839

Source DB: PubMed Journal: Plant Physiol ISSN： 0032-0889 Impact factor: 8.340

11 in total

The osmotic behavior of corn mitochondria.

1. Osmotic reversal of mitochondrial swelling.

2. The osmotic behavior of the sucrose-inaccessible space of mitochondrial pellets from rat liver.

3. The osmotic behavior and permeability to non-electrolytes of mitochondria.

4. Relationship between the Physical Nature of Mitochondrial Membranes and Chilling Sensitivity in Plants.

5. Protein measurement with the Folin phenol reagent.

6. An outer metabolic region of the yeast cell.

7. Ion transport in liver mitochondria. II. Metabolism-linked ion extrusion.

8. Osmotic volume changes induced by a permeable solute.

9. Swelling and contraction of phaseolus hypocotyl mitochondria.

10. Contracted state as an energy source for ca binding and ca + inorganic phosphate accumulation by corn mitochondria.

1. The effects of water stress on some membrane characteristics of corn mitochondria.

2. Mode of Methomyl and Bipolaris maydis (race T) Toxin in Uncoupling Texas Male-Sterile Cytoplasm Corn Mitochondria.

3. Effects of gramicidin on corn mitochondria.

4. [Endosymoiosis of leafhoppers: A model for the evolution of the eukaryotic cell (author's transl)].

5. Temperature-dependent Changes in the Polysomal Population of Senescent (Ripening) Pear Fruit.

6. Activation of endogenous respiration and anion transport in corn mitochondria by acidification of the medium.

7. Corn Mitochondrial Swelling and Contraction-an Alternate Interpretation.

8. Swelling and Contraction of Mitochondria from Cold-hardened and Nonhardened Wheat and Rye Seedlings.

9. Diffusion and osmotic transfer in corn mitochondria.

10. The response of plant mitochondria to media of high solute content.