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Cereal phosphate transporters associated with the mycorrhizal pathway of phosphate uptake into roots.
Planta. 2005 Nov; 222(4):688-98.P

Abstract

A very large number of plant species are capable of forming symbiotic associations with arbuscular mycorrhizal (AM) fungi. The roots of these plants are potentially capable of absorbing P from the soil solution both directly through root epidermis and root hairs, and via the AM fungal pathway that delivers P to the root cortex. A large number of phosphate (P) transporters have been identified in plants; tissue expression patterns and kinetic information supports the roles of some of these in the direct root uptake pathways. Recent work has identified additional P transporters in several unrelated species that are strongly induced, sometimes specifically, in AM roots. The primary aim of the work described in this paper was to determine how mycorrhizal colonisation by different species of AM fungi influenced the expression of members of the Pht1 gene families in the cereals Hordeum vulgare (barley), Triticum aestivum (wheat) and Zea mays (maize). RT-PCR and in-situ hybridisation, showed that the transporters HORvu;Pht1;8 (AY187023), TRIae;Pht1;myc (AJ830009) and ZEAma;Pht1;6 (AJ830010), had increased expression in roots colonised by the AM fungi Glomus intraradices,Glomus sp. WFVAM23 and Scutellospora calospora. These findings add to the increasing body of evidence indicating that plants that form AM associations with members of the Glomeromycota have evolved phosphate transporters that are either specifically or preferentially involved in scavenging phosphate from the apoplast between intracellular AM structures and root cortical cells. Operation of mycorrhiza-inducible P transporters in the AM P uptake pathway appears, at least partially, to replace uptake via different P transporters located in root epidermis and root hairs.

Authors+Show Affiliations

Glassop D
CSIRO Plant Industry, Queensland Bioscience Precinct, 306 Carmody Rd, St Lucia, 4067, Queensland. donna.glassop@csiro.au
Smith SE
No affiliation info available
Smith FW
No affiliation info available

MeSH

Cloning, MolecularEdible GrainGene Expression Regulation, PlantGenes, ReporterHordeumMycorrhizaePhosphate Transport ProteinsPhosphatesPlant ProteinsPlant RootsPlants, Genetically ModifiedReverse Transcriptase Polymerase Chain ReactionTriticumZea mays

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16133217

Citation

Glassop, Donna, et al. "Cereal Phosphate Transporters Associated With the Mycorrhizal Pathway of Phosphate Uptake Into Roots." Planta, vol. 222, no. 4, 2005, pp. 688-98.
Glassop D, Smith SE, Smith FW. Cereal phosphate transporters associated with the mycorrhizal pathway of phosphate uptake into roots. Planta. 2005;222(4):688-98.
Glassop, D., Smith, S. E., & Smith, F. W. (2005). Cereal phosphate transporters associated with the mycorrhizal pathway of phosphate uptake into roots. Planta, 222(4), 688-98.
Glassop D, Smith SE, Smith FW. Cereal Phosphate Transporters Associated With the Mycorrhizal Pathway of Phosphate Uptake Into Roots. Planta. 2005;222(4):688-98. PubMed PMID: 16133217.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cereal phosphate transporters associated with the mycorrhizal pathway of phosphate uptake into roots. AU - Glassop,Donna, AU - Smith,Sally E, AU - Smith,Frank W, Y1 - 2005/11/04/ PY - 2004/12/22/received PY - 2005/04/27/accepted PY - 2005/9/1/pubmed PY - 2006/3/3/medline PY - 2005/9/1/entrez SP - 688 EP - 98 JF - Planta JO - Planta VL - 222 IS - 4 N2 - A very large number of plant species are capable of forming symbiotic associations with arbuscular mycorrhizal (AM) fungi. The roots of these plants are potentially capable of absorbing P from the soil solution both directly through root epidermis and root hairs, and via the AM fungal pathway that delivers P to the root cortex. A large number of phosphate (P) transporters have been identified in plants; tissue expression patterns and kinetic information supports the roles of some of these in the direct root uptake pathways. Recent work has identified additional P transporters in several unrelated species that are strongly induced, sometimes specifically, in AM roots. The primary aim of the work described in this paper was to determine how mycorrhizal colonisation by different species of AM fungi influenced the expression of members of the Pht1 gene families in the cereals Hordeum vulgare (barley), Triticum aestivum (wheat) and Zea mays (maize). RT-PCR and in-situ hybridisation, showed that the transporters HORvu;Pht1;8 (AY187023), TRIae;Pht1;myc (AJ830009) and ZEAma;Pht1;6 (AJ830010), had increased expression in roots colonised by the AM fungi Glomus intraradices,Glomus sp. WFVAM23 and Scutellospora calospora. These findings add to the increasing body of evidence indicating that plants that form AM associations with members of the Glomeromycota have evolved phosphate transporters that are either specifically or preferentially involved in scavenging phosphate from the apoplast between intracellular AM structures and root cortical cells. Operation of mycorrhiza-inducible P transporters in the AM P uptake pathway appears, at least partially, to replace uptake via different P transporters located in root epidermis and root hairs. SN - 0032-0935 UR - https://www.unboundmedicine.com/medline/citation/16133217/Cereal_phosphate_transporters_associated_with_the_mycorrhizal_pathway_of_phosphate_uptake_into_roots_ DB - PRIME DP - Unbound Medicine ER -