Transport in Fungal Cells

Jennings, David

doi:10.1007/978-3-642-66227-0_7

Cited by 6 publications

(2 citation statements)

References 179 publications

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“…Relatively little is known of the mechanisms whereby microorganisms, particularly fungi, achieve and regulate uptake of phosphate (13,24). There are conflicting reports regarding the number and the kinetic properties of the uptake systems of the yeast Saccharomyces cerevisiae (2,3,8,15).…”

mentioning

confidence: 99%

Kinetic characterization of the two phosphate uptake systems in the fungus Neurospora crassa

Burns¹,

Beever²

1977

J Bacteriol

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The kinetics of phosphate uptake by exponentially growing Neurospora crassa were studied to determine the nature of the differences in uptake activity associated with growth at different external phosphate concentrations. Conidia, grown in liquid medium containing either 10 mM or 50 ,AM phosphate, were harvested, and their phosphate uptake ability was measured. Initial experiments, where uptake was examined over a narrow concentration range near that of the growth medium, indicated the presence of a low-affinity (high Kmn) system in germlings from 10 mM phosphate and a high-affinity (low

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mentioning

confidence: 99%

Kinetic characterization of the two phosphate uptake systems in the fungus Neurospora crassa

Burns¹,

Beever²

1977

J Bacteriol

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“…Indeed, it may be that the fundamental mechanism of organic solute transport is a co-transport with protons and the sodium co-transport system may be regarded as an evolutionary development. Certainly organisms that lack the sodium co-transport mechanism are either less responsive to sodium or exist in an environment with a low sodium concentration (Jennings, 1976).…”

Section: Mechanism Of Proton-sugar Co-transportmentioning

confidence: 99%

Proton Co‐transport of Organic Solutes by Plant Cells

Baker

1978

New Phytologist

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I. SUMMARY The possible role of proton co‐transport in the uptake of sugars and amino acids by plant cells is discussed. Evidence is presented for sodium or proton co‐transport of organic solutes in animal, bacterial and algal systems and this is discussed in relation to evidence for a similar mechanism operating in the cells of higher plants. It appears that in plant cells an electrogenic proton efflux pump generates a gradient of electrochemical potential for protons which provides energy for the movement of an organic solute‐proton‐carrier complex across the membrane. The large sugar transport associated with the loading of phloem sieve elements is postulated to be driven by a proton co‐transport system and the relation of this loading process to transport and subsequent unloading of the phloem is considered.

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