| dc.contributor.author |
Rigas, S |
en |
| dc.contributor.author |
Debrosses, G |
en |
| dc.contributor.author |
Haralampidis, K |
en |
| dc.contributor.author |
Vicente-Agullo, F |
en |
| dc.contributor.author |
Feldmann, KA |
en |
| dc.contributor.author |
Grabov, A |
en |
| dc.contributor.author |
Dolan, L |
en |
| dc.contributor.author |
Hatzopoulos, P |
en |
| dc.date.accessioned |
2014-06-06T06:44:45Z |
|
| dc.date.available |
2014-06-06T06:44:45Z |
|
| dc.date.issued |
2001 |
en |
| dc.identifier.issn |
10404651 |
en |
| dc.identifier.uri |
http://dx.doi.org/10.1105/tpc.13.1.139 |
en |
| dc.identifier.uri |
http://62.217.125.90/xmlui/handle/123456789/2042 |
|
| dc.subject.other |
Arabidopsis |
en |
| dc.subject.other |
Saccharomyces |
en |
| dc.subject.other |
carrier protein |
en |
| dc.subject.other |
potassium |
en |
| dc.subject.other |
amino acid sequence |
en |
| dc.subject.other |
Arabidopsis |
en |
| dc.subject.other |
article |
en |
| dc.subject.other |
chemistry |
en |
| dc.subject.other |
gene |
en |
| dc.subject.other |
genetic complementation |
en |
| dc.subject.other |
genetics |
en |
| dc.subject.other |
growth, development and aging |
en |
| dc.subject.other |
ion transport |
en |
| dc.subject.other |
metabolism |
en |
| dc.subject.other |
molecular genetics |
en |
| dc.subject.other |
phenotype |
en |
| dc.subject.other |
plant root |
en |
| dc.subject.other |
protein conformation |
en |
| dc.subject.other |
sequence homology |
en |
| dc.subject.other |
Amino Acid Sequence |
en |
| dc.subject.other |
Arabidopsis |
en |
| dc.subject.other |
Carrier Proteins |
en |
| dc.subject.other |
Genes, Plant |
en |
| dc.subject.other |
Genetic Complementation Test |
en |
| dc.subject.other |
Ion Transport |
en |
| dc.subject.other |
Molecular Sequence Data |
en |
| dc.subject.other |
Phenotype |
en |
| dc.subject.other |
Plant Roots |
en |
| dc.subject.other |
Potassium |
en |
| dc.subject.other |
Protein Conformation |
en |
| dc.subject.other |
Sequence Homology, Amino Acid |
en |
| dc.subject.other |
Support, Non-U.S. Gov't |
en |
| dc.title |
TRH1 encodes a potassium transporter required for tip growth in arabidopsis root hairs |
en |
| heal.type |
journalArticle |
en |
| heal.identifier.primary |
10.1105/tpc.13.1.139 |
en |
| heal.publicationDate |
2001 |
en |
| heal.abstract |
Root hair initiation involves the formation of a bulge at the basal end of the trichoblast by localized diffuse growth. Tip growth occurs subsequently at this initiation site and is accompanied by the establishment of a polarized cytoplasmic organization. Arabidopsis plants homozygous for a complete loss-of-function tiny root hair 1 (trh1) mutation were generated by means of the T-DNA-tagging method. Trichoblasts of trh1 plants form initiation sites but fail to undergo tip growth. A predicted primary structure of TRH1 indicates that it belongs to the AtKT/AtKUP/HAK K+ transporter family. The proposed function of TRH1 as a K+ transporter was confirmed in 86Rb uptake experiments, which demonstrated that trh1 plants are partially impaired in K+ transport. In line with these results, TRH1 was able to complement the trk1 potassium transporter mutant of Saccharomyces, which is defective in high-affinity K+ uptake. Surprisingly, the trh1 phenotype was not restored when mutant seedlings were grown at high external potassium concentrations. These data demonstrate that TRH1 mediates K+ transport in Arabidopsis roots and is responsible for specific K+ translocation, which is essential for root hair elongation. |
en |
| heal.journalName |
Plant Cell |
en |
| dc.identifier.issue |
1 |
en |
| dc.identifier.volume |
13 |
en |
| dc.identifier.doi |
10.1105/tpc.13.1.139 |
en |
| dc.identifier.spage |
139 |
en |
| dc.identifier.epage |
151 |
en |