Aluminum stress stimulates the accumulation of organic acids in root apices of Brachiaria species

Wenzl, Peter; Chavez, Alba L.; Patiño, Gloria M.; Mayer, Jorge Edgard; Rao, Idupulapati M.

Aluminum stress stimulates the accumulation of organic acids in root apices of Brachiaria species

CIAT- Outstanding Research Publication Award (ORPA) - 2003

Saved in:

Bibliographic Details
Main Authors:	Wenzl, Peter, Chavez, Alba L., Patiño, Gloria M., Mayer, Jorge Edgard, Rao, Idupulapati M.
Format:	Journal Article biblioteca
Language:	English
Published:	Wiley 2002
Subjects:	feed crops, brachiaria decumbens, brachiaria ruziziensis, feed grasses, aluminium, organic acids, apical meristems, roots, detoxification, gramíneas forrajeras, aluminio, acidos orgánicos, meristemas apicales, raíces, desintoxicación,
Online Access:	https://hdl.handle.net/10568/77715 https://doi.org/10.1002/1522-2624(200210)165:5<582
Tags:	Add Tag No Tags, Be the first to tag this record!

id	dig-cgspace-10568-77715
record_format	koha
spelling	dig-cgspace-10568-777152023-03-21T14:11:42Z Aluminum stress stimulates the accumulation of organic acids in root apices of Brachiaria species Wenzl, Peter Chavez, Alba L. Patiño, Gloria M. Mayer, Jorge Edgard Rao, Idupulapati M. feed crops brachiaria decumbens brachiaria ruziziensis feed grasses aluminium organic acids apical meristems roots detoxification gramíneas forrajeras aluminio acidos orgánicos meristemas apicales raíces desintoxicación CIAT- Outstanding Research Publication Award (ORPA) - 2003 Aluminum‐resistant Brachiaria decumbens Stapf cv. Basilisk (signalgrass) and closely related, but less resistant Brachiaria ruziziensis Germain & Evrard cv. Common (ruzigrass) both accumulated high concentrations of aluminum (Al) in roots. Approximately two thirds of the total Al was complexed by soluble low‐molecular‐weight ligands, suggesting that it had been taken up into the symplasm. We therefore investigated whether these species might employ Al‐chelating organic acids for internal detoxification of Al taken up by root apices, the primary site of Al injury. Unlike root apices of other Al‐resistant plant genotypes, which secrete organic‐acid anions to detoxify Al externally, apices of Brachiaria species accumulated organic acids within the tissue. A comparison with whole roots showed that this preference for accumulation (as opposed to secretion) was restricted to apices. Citric acid, and to a lesser extent trans‐aconitic acid, accumulated in a uniform dose‐dependent manner in root apices of both species as their Al content increased under Al‐toxic growth conditions. Their accumulation was accompanied by a stimulation of malate synthesis in Al‐resistant B. decumbens, while it occurred at the expense of malate in Al‐sensitive B. ruziziensis. These data suggest a role of organic acids in the internal detoxification of Al in root apices of both Brachiaria species, presumably contributing to their comparatively high basal level of Al resistance. Yet internal detoxification of Al by organic acids does not appear to be the principal mechanism responsible for the superior resistance of B. decumbens. 2002 2016-11-10T20:29:09Z 2016-11-10T20:29:09Z Journal Article Wenzl, Peter; Chaves, Alba Lucía; Patiño, Gloria M.; Mayer, Jorge Edgard; Rao, Idupulapati Madhusudana. 2002. Aluminum stress stimulates the accumulation of organic acids in root apices of Brachiaria species . Zeitschrift für Pflanzenernährung und Bodenkunde = Journal of Plant Nutrition and Soil Science (Germany) 165(5):582-588. 1436-8730 https://hdl.handle.net/10568/77715 https://doi.org/10.1002/1522-2624(200210)165:5<582 en Limited Access 165(5):582-588 Wiley Zeitschrift für Pflanzenernährung und Bodenkunde
institution	CGIAR
collection	DSpace
country	Francia
countrycode	FR
component	Bibliográfico
access	En linea
databasecode	dig-cgspace
tag	biblioteca
region	Europa del Oeste
libraryname	Biblioteca del CGIAR
language	English
topic	feed crops brachiaria decumbens brachiaria ruziziensis feed grasses aluminium organic acids apical meristems roots detoxification gramíneas forrajeras aluminio acidos orgánicos meristemas apicales raíces desintoxicación feed crops brachiaria decumbens brachiaria ruziziensis feed grasses aluminium organic acids apical meristems roots detoxification gramíneas forrajeras aluminio acidos orgánicos meristemas apicales raíces desintoxicación
spellingShingle	feed crops brachiaria decumbens brachiaria ruziziensis feed grasses aluminium organic acids apical meristems roots detoxification gramíneas forrajeras aluminio acidos orgánicos meristemas apicales raíces desintoxicación feed crops brachiaria decumbens brachiaria ruziziensis feed grasses aluminium organic acids apical meristems roots detoxification gramíneas forrajeras aluminio acidos orgánicos meristemas apicales raíces desintoxicación Wenzl, Peter Chavez, Alba L. Patiño, Gloria M. Mayer, Jorge Edgard Rao, Idupulapati M. Aluminum stress stimulates the accumulation of organic acids in root apices of Brachiaria species
description	CIAT- Outstanding Research Publication Award (ORPA) - 2003
format	Journal Article
topic_facet	feed crops brachiaria decumbens brachiaria ruziziensis feed grasses aluminium organic acids apical meristems roots detoxification gramíneas forrajeras aluminio acidos orgánicos meristemas apicales raíces desintoxicación
author	Wenzl, Peter Chavez, Alba L. Patiño, Gloria M. Mayer, Jorge Edgard Rao, Idupulapati M.
author_facet	Wenzl, Peter Chavez, Alba L. Patiño, Gloria M. Mayer, Jorge Edgard Rao, Idupulapati M.
author_sort	Wenzl, Peter
title	Aluminum stress stimulates the accumulation of organic acids in root apices of Brachiaria species
title_short	Aluminum stress stimulates the accumulation of organic acids in root apices of Brachiaria species
title_full	Aluminum stress stimulates the accumulation of organic acids in root apices of Brachiaria species
title_fullStr	Aluminum stress stimulates the accumulation of organic acids in root apices of Brachiaria species
title_full_unstemmed	Aluminum stress stimulates the accumulation of organic acids in root apices of Brachiaria species
title_sort	aluminum stress stimulates the accumulation of organic acids in root apices of brachiaria species
publisher	Wiley
publishDate	2002
url	https://hdl.handle.net/10568/77715 https://doi.org/10.1002/1522-2624(200210)165:5<582
work_keys_str_mv	AT wenzlpeter aluminumstressstimulatestheaccumulationoforganicacidsinrootapicesofbrachiariaspecies AT chavezalbal aluminumstressstimulatestheaccumulationoforganicacidsinrootapicesofbrachiariaspecies AT patinogloriam aluminumstressstimulatestheaccumulationoforganicacidsinrootapicesofbrachiariaspecies AT mayerjorgeedgard aluminumstressstimulatestheaccumulationoforganicacidsinrootapicesofbrachiariaspecies AT raoidupulapatim aluminumstressstimulatestheaccumulationoforganicacidsinrootapicesofbrachiariaspecies
_version_	1779054507318050816

Aluminum stress stimulates the accumulation of organic acids in root apices of Brachiaria species

Similar Items

Resource Map