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.

Mycorrhizas, Mycorrhizae

---

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.

Physiological aspects, Nitrogen-fixing microorganisms, Nitrogen-fixing plants

---

Similar abstracts:

• Abstracts: A new family of monotremes from the Cretaceous of Australia. Ground rules for early birds
• Abstracts: Mammalian facilitative hexose transporters mediate the transport of dehydroascorbic acid. The biosynthetic pathway of vitamin C in higher plants
• Abstracts: A stellar origin for the short-lived nuclides in the early Solar System. Observations of high-velocity, weakly shocked ejecta from experimental impacts
• Abstracts: A lesson from secretory granules. A synthetic mimic of the secretory granule for drug delivery. Release of secretory products during transient vesicle fusion
• Abstracts: Insect protection against viruses. RAMPs regulate the transport and ligand specificity of the calcitonin-receptor-like receptor

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.