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Literature DB >> 16661766

Measurement of the sieve tube membrane potential.

Abstract

A procedure is described for the measurement of the sieve tube membrane potential in the phloem of bark strips from Salix exigua Nutt. Measurements were made by inserting a measuring microelectrode into sap exuding from severed stylets of the willow aphid, Tuberolachnus salignus. Data taken from 20 bark strips gave an average potential of -155 +/- 9 millivolts. Evidence is presented for an electrogenic component of the sieve tube membrane potential. The occurrence of a saturable sucrose-induced membrane depolarization is consistent with the concept of sugar accumulation by a sucrose/H(+) co-transport mechanism.

Entities: Chemical Species

Year: 1981 PMID： 16661766 PMCID： PMC425784 DOI： 10.1104/pp.67.4.845

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

2 in total

1. Unstirred layer, source of biased Michaelis constant in membrane transport.

Authors: D Winne
Journal: Biochim Biophys Acta Date: 1973-02-27

2. Phloem loading of sucrose: involvement of membrane ATPase and proton transport.

Authors: R T Giaquinta
Journal: Plant Physiol Date: 1979-04 Impact factor: 8.340

2 in total

14 in total

7. Surcose transport in isolated plasma-membrane vesicles from sugar beet (Beta vulgaris L.) Evidence for an electrogenic sucrose-proton symport.

Authors: T J Buckhout
Journal: Planta Date: 1989-06 Impact factor: 4.116

8. Sucrose transport into the phloem of Ricinus communis L. seedlings as measured by the analysis of sieve-tube sap.

Authors: J Kallarackal; G Orlich; C Schobert; E Komor
Journal: Planta Date: 1989-03 Impact factor: 4.116

9. Symplastic isolation of the sieve element-companion cell complex in the phloem of Ricinus communis and Salix alba stems.

Authors: A J van Bel; R Kempers
Journal: Planta Date: 1991-12 Impact factor: 4.116

10. Sucrose-dependent H(+) transport in plasma-membrane vesicles isolated from sugarbeet leaves (Beta vulgaris L.) : Evidence in support of the H(+)-symport model for sucrose transport.

Authors: J H Slone; T J Buckhout
Journal: Planta Date: 1991-03 Impact factor: 4.116

Measurement of the sieve tube membrane potential.

1. Unstirred layer, source of biased Michaelis constant in membrane transport.

2. Phloem loading of sucrose: involvement of membrane ATPase and proton transport.

1. Polar-localised poplar K+ channel capable of controlling electrical properties of wood-forming cells.

2. Thermodynamic battle for photosynthate acquisition between sieve tubes and adjoining parenchyma in transport phloem.

3. A guide to the use of the exuding-stylet technique in phloem physiology.

4. Transport of hexoses by the phloem of Ricinus communis L. seedlings.

5. The proton-sucrose symport.

6. Characteristics of electrical signals in poplar and responses in photosynthesis.

7. Surcose transport in isolated plasma-membrane vesicles from sugar beet (Beta vulgaris L.) Evidence for an electrogenic sucrose-proton symport.

8. Sucrose transport into the phloem of Ricinus communis L. seedlings as measured by the analysis of sieve-tube sap.

9. Symplastic isolation of the sieve element-companion cell complex in the phloem of Ricinus communis and Salix alba stems.

10. Sucrose-dependent H(+) transport in plasma-membrane vesicles isolated from sugarbeet leaves (Beta vulgaris L.) : Evidence in support of the H(+)-symport model for sucrose transport.