Spatial and temporal variation in citrate and malate exudation and tissue concentration as affected by P stress in roots of white lupin (Record no. 40875)

MARC details
000 -LEADER
fixed length control field 02572nam a2200193Ia 4500
003 - CONTROL NUMBER IDENTIFIER
control field MX-MdCICY
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20250625124644.0
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-6534
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field 250602s9999 xx |||||s2 |||| ||und|d
245 10 - TITLE STATEMENT
Title Spatial and temporal variation in citrate and malate exudation and tissue concentration as affected by P stress in roots of white lupin
490 0# - SERIES STATEMENT
Volume/sequential designation Plant and Soil , 241(2), p.209-221, 2002
520 3# - SUMMARY, ETC.
Summary, etc. Exudation of carboxylates represents one the most efficient strategies used by P-starved white lupin (Lupinus albus L.)to acquire phosphorus from sparingly soluble sources. This exudation occurs through proteoid root clusters, with citrate being the predominant organic acid released. The occasional detection of malate in whole root exudates suggests that this acid would also be released, but from tissues other than root clusters. To investigate the spatial and temporal pattern of exudation, citrate and malate exudation and concentration were measured in whole roots and root sections of white lupin, from seedling emergence to plant senescence due to P starvation. Both organic acids were detected in whole root exudates of P-stressed plants, and they were released at similar rates throughout the experiment. Malate was predominantly exuded from apices of both seedling taproots and proteoid roots, whereas citrate exudation was restricted to proteoid root clusters. Studies directed to address the association between carboxylate exudation and concentration in proteoid root clusters showed a non-linear response for citrate, within the range of 7 to 23 mol g-1 fresh weight. This association was further assessed by altering citrate concentration in the whole root. Adding P to 24-day-old P-starved plants reduced citrate concentration and exudation to the level of the control P-fed plants, demonstrating that citrate exudation and concentration are associated. Malate exudation and concentration did not correlate significantly. Results indicate that citrate release by P-starved white lupin would occur whenever a certain threshold of citrate concentration is attained, and that the sites, the rates and the span of transient exudation depend on the physiological age of the tissue. Lupinus albus - organic acids - phosphorus deficiency - proteoid
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Peñaloza, E.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Corcuera, L.J.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Martinez, J.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1xV2jlpOVa1jTErH8uZsU3mNW2uBn40U2/view?usp=drivesdk">https://drive.google.com/file/d/1xV2jlpOVa1jTErH8uZsU3mNW2uBn40U2/view?usp=drivesdk</a>
Public note Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Source of classification or shelving scheme Clasificación local
Koha item type Documentos solicitados
Holdings
Lost status Source of classification or shelving scheme Damaged status Not for loan Collection Home library Current library Shelving location Date acquired Total checkouts Full call number Date last seen Price effective from Koha item type
  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-6534 25.06.2025 25.06.2025 Documentos solicitados