A phosphate transporter from the mycorrhizal fungus Glomus versiforme
Article Abstract:
A study has been conducted to examine the molecular mechanisms of phosphate uptake and translocation from the mycorrhizal fungus, Glomus versiforme, by using cDNA cloning techniques. A complementary DNA encoding a transmembrane phosphate transporter from the fungus was encoded through complementation of a yeast phosphate transport mutants. The results showed that expression of the trans-membrane phosphate transporter is localized to the external hyphae of G. versiforme, which is the site for initial phosphate uptake.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1995
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A channel-like transporter for NH4+ on the symbolic interface of N2-fixing plants
Article Abstract:
A study has been conducted to characterize ammonium ion transport in nitrogen-fixing plants using patch-clamp techniques. Membrane patches on isolated symbiosomes showed the passive smoothly activating currents acts a the major transporter of ammonium ions across the membrane. The currents are largest when ammonium cation is at physiological concentration, but are blocked by calcium ions on the bacteroid side of the membrane, suggesting that the current acts more like a channel than a carrier-mediated transport.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1995
User Contributions:
Comment about this article or add new information about this topic:
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