MARC details
| 000 -LEADER |
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| fixed length control field |
02721nam a2200325Ia 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
MX-MdCICY |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20250625140657.0 |
| 040 ## - CATALOGING SOURCE |
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| Transcribing agency |
CICY |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
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| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
B-11773 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
250602s9999 xx |||||s2 |||| ||und|d |
| 245 10 - TITLE STATEMENT |
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| Title |
Competition between uptake of ammonium and potassium in barley and Arabidopsis roots: molecular mechanisms and physiological consequences |
| 490 0# - SERIES STATEMENT |
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| Volume/sequential designation |
Journal of Experimental Botany, 61, p.2303-2315, 2010 |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
Plants can use ammonium (NH1 4 ) as the sole nitrogen source, but at high NH1 4 concentrations in the root medium, particularly in combination with a low availability of K1, plants suffer from NH1 4 toxicity. To understand the role of K1 transporters and non-selective cation channels in K1/NH1 4 interactions better, growth, NH1 4 and K1 accumulation and the specific fluxes of NH1 4 , K1, and H1 were examined in roots of barley (Hordeum vulgare L.)and Arabidopsis seedlings. Net fluxes of K1 and NH1 4 were negatively correlated, as were their tissue concentrations, suggesting that there is direct competition during uptake. pharmacological treatments with the K1 transport inhibitors tetraethyl ammonium (TEA1)and gadolinium (Gd31)reduced NH1 4 influx, and the addition of TEA1 alleviated the NH1 4 -induced depression of root growth in germinating Arabidopsis plants. Screening of a barley root cDNA library in a yeast mutant lacking all NH1 4 and K1 uptake proteins through the deletion of MEP1-3 and TRK1 and TRK2 resulted in the cloning of the barley K1 transporter HvHKT2;1. Further analysis in yeast suggested that HvHKT2;1, AtAKT1, and AtHAK5 transported NH1 4 , and that K1 supplied at increasing concentrations competed with this NH1 4 transport. On the other hand, uptake of K1 by AtHAK5, and to a lesser extent via HvHKT2;1 and AtAKT1, was inhibited by increasing concentrations of NH1 4 . Together, the results of this study show that plant K1 transporters and channels are able to transport NH1 4 . Unregulated NH1 4 uptake via these transporters may contribute to NH1 4 toxicity at low K1 levels, and may explain the alleviation of NH1 4 toxicity by K1. |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
AMMONIUM TOXICITY |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
ARABIDOPSIS |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
BARLEY |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
COMPETITION |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
GADOLINIUM |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
POTASSIUM NUTRITION |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
TETRAETHYL AMMONIUM |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Hoopen, F. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Cuin, T. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Pedas, P. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Hegelund, J.N. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Shabala, S. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Schjoerring, J.K. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Jahn, T.P. |
| 856 40 - ELECTRONIC LOCATION AND ACCESS |
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| Uniform Resource Identifier |
<a href="https://drive.google.com/file/d/1Bh_km_u_Dx4UwvO3Xho7SH4kV6uniyxq/view?usp=drivesdk">https://drive.google.com/file/d/1Bh_km_u_Dx4UwvO3Xho7SH4kV6uniyxq/view?usp=drivesdk</a> |
| Public note |
Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Source of classification or shelving scheme |
Clasificación local |
| Koha item type |
Documentos solicitados |
