Amino-acid influx at the soil-root interface of Zea mays L. and its implications in the rhizosphere (Record no. 44420)

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fixed length control field 01975nam a2200229Ia 4500
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control field MX-MdCICY
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20250625140626.0
040 ## - CATALOGING SOURCE
Transcribing agency CICY
090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN)
Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-10181
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245 10 - TITLE STATEMENT
Title Amino-acid influx at the soil-root interface of Zea mays L. and its implications in the rhizosphere
490 0# - SERIES STATEMENT
Volume/sequential designation Plant and Soil, 163(1), p.1-12, 1994
520 3# - SUMMARY, ETC.
Summary, etc. The aim of the study was to investigate the ability of intact Zea mays. L. roots to regulate the amount of free amino-acids present in the rhizosphere. Using metabolic inhibitors it was demonstrated that the release of aminoacids from the root occurred by passive diffusion, whilst free amino-acids outside the root could be re-captured by an active transport mechanism. The influx of amino-acids into the root was shown to be relatively independent of spatial location along the root and was little affected by the presence of other organic compounds in solution. It was deduced from root concentration gradients that the main site of amino-acid exudation was at root tips. Amino-acid uptake by the root was shown to be independent of both inorganic-N concentration and the presence of other organic solutes in solution. A computer simulation model was constructed to assess the contribution of organic-N uptake (acidic, basic and neutral amino-acids)to the plant's N budget, in comparison to the inorganic solutes NO3 and NH4. Simulations of N uptake from a 0.5 mm radius rhizosphere indicated that when inorganic-N concentrations in soil were limiting (~< 0.1 pmoles cm -3 soil), the uptake of amino-N accounted for up to 90
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element AMINO-ACIDS
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element MAIZE
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element RHIZOSPHERE
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element ROOT EXUDATES
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Jones, D.L.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Darrah, Rr.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1ig0Qdg4N00333T_bNYTcP6I95Eq7-_cb/view?usp=drivesdk">https://drive.google.com/file/d/1ig0Qdg4N00333T_bNYTcP6I95Eq7-_cb/view?usp=drivesdk</a>
Public note Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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Source of classification or shelving scheme Clasificación local
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-10181 25.06.2025 25.06.2025 Documentos solicitados