A phosphate transporter gene from the extra-radical mycelium of an arbuscular mycorrhizal fungus Glomus intraradices is regulated in response to phosphate in the environment

Molecular Plant-microbe Interactions : MPMI
I E Maldonado-MendozaM J Harrison

Abstract

The majority of vascular flowering plants are able to form symbiotic associations with arbuscular mycorrhizal fungi. These symbioses, termed arbuscular mycorrhizas, are mutually beneficial, and the fungus delivers phosphate to the plant while receiving carbon. In these symbioses, phosphate uptake by the arbuscular mycorrhizal fungus is the first step in the process of phosphate transport to the plant. Previously, we cloned a phosphate transporter gene involved in this process. Here, we analyze the expression and regulation of a phosphate transporter gene (GiPT) in the extra-radical mycelium of the arbuscular mycorrhizal fungus Glomus intraradices during mycorrhizal association with carrot or Medicago truncatula roots. These analyses reveal that GiPT expression is regulated in response to phosphate concentrations in the environment surrounding the extra-radical hyphae and modulated by the overall phosphate status of the mycorrhiza. Phosphate concentrations, typical of those found in the soil solution, result in expression of GiPT. These data imply that G. intraradices can perceive phosphate levels in the external environment but also suggest the presence of an internal phosphate sensing mechanism.

References

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Citations

May 5, 2005·Planta·Bettina Hause, Thomas Fester
Sep 28, 2006·Mycorrhiza·Raffaella Balestrini, Luisa Lanfranco
Aug 26, 2011·Mycorrhiza·Sonia LabidiAnissa Lounès-Hadj Sahraoui
Apr 11, 2013·Mycorrhiza·Leonardo CasieriDaniel Wipf
Sep 17, 2008·Nature Reviews. Microbiology·Martin Parniske
Jul 16, 2010·Tree Physiology·C Plassard, B Dell
Oct 15, 2011·Molecular Plant-microbe Interactions : MPMI·Shu-Yi Yang, Uta Paszkowski
Nov 13, 2002·Plant Physiology·Pål Axel OlssonHervé Rouhier
May 5, 2005·Applied and Environmental Microbiology·Pål Axel OlssonGöran Bengtsson
May 17, 2011·BMC Systems Biology·Peter E LarsenFrank R Collart
Jan 1, 2002·The Arabidopsis Book·Yves Poirier, Marcel Bucher
May 28, 2014·Fungal Biology·Ma del Carmen A González-ChávezRogelio Carrillo-González
Sep 9, 2010·Annual Review of Genetics·Ian R Sanders, Daniel Croll
Jul 16, 2014·Trends in Plant Science·Scott W Behie, Michael J Bidochka
Nov 26, 2011·Fungal Biology·Ma del Carmen A González-ChávezIgnacio E Maldonado-Mendoza
May 20, 2008·Journal of Environmental Radioactivity·Veronika GyuriczaStéphane Declerck
Feb 12, 2008·Trends in Plant Science·Ruairidh J H SawersUta Paszkowski
Feb 1, 2007·Plant, Cell & Environment·Hélène JavotMaria J Harrison
Sep 2, 2006·The New Phytologist·Uta Paszkowski

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