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| Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
Fecha : |
20/11/2015 |
Actualizado : |
23/05/2016 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
MANZI, M.; LADO, J.; RODRIGO, M.J.; ZACARÍAS, L.; ARBONA, V.; GÓMEZ-CADENAS, A. |
Afiliación : |
MATÍAS MANZI, Universidad Jaume I; JOANNA LADO LINDNER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARÍA JESÚS RODRIGO, IATA (Instituto de Agroquímica y Tecnología de Alimentos); LORENZO ZACARÍAS, IATA (Instituto de Agroquímica y Tecnología de Alimentos); VICENT ARBONA, Universidad Jaume I; AURELIO GÓMEZ-CADENAS, Universidad Jaume I. |
Título : |
Root ABA accumulation in long-term water-stressed plants is sustained by hormone transport from aerial organs. |
Fecha de publicación : |
2015 |
Fuente / Imprenta : |
Plant and Cell Physiology, 2015, v. 56, no.12, p. 2457-2466. |
ISSN : |
Online ISSN 1471-9053 - Print ISSN 0032-0781 |
DOI : |
10.1093/pcp/pcv161 |
Idioma : |
Inglés |
Notas : |
Received July 24, 2015. Accepted October 22, 2015. First published online: November 4, 2015 |
Contenido : |
ABSTRACT.
The reduced pool of the abscisic acid (ABA) precursors, ?-? carotenoids, in roots does not account for the substantial increase of ABA content in response to water stress (WS) conditions, suggesting that ABA could be transported from other organs. Basipetal transport was interrupted by stem-girdling and ABA levels were determined in roots after two cycles of WS induced by transplanting plants to dry perlite. Leaf applications of isotope-labelled ABA and reciprocal grafting of ABA-deficient tomato mutants were used to confirm the involvement of aerial organs on root ABA accumulation. Disruption of basipetal transport reduced ABA accumulation in roots and this decrease was more severe after two consecutive WS periods. This effect was linked to a sharp decrease in the ?-? carotenoid pool in roots in response to water deficit. Significant levels of isotope-labelled ABA were transported from leaves to roots, mainly in plants subjected to water dehydration. Furthermore, the use of different ABA-deficient tomato mutants in reciprocal grafting combinations with wild-type genotypes confirmed the involvement of aerial organs in the ABA accumulation in roots. In conclusion, accumulation of ABA in roots after long-term WS periods largely relies on the aerial organs suggesting a reduced ability of the roots to synthesize ABA from carotenoids. Furthermore, plants are able to basipetally transport ABA to sustain high hormone levels in roots.
© The Author 2015. Published by Oxford University Press on behalf of Japanese Society of Plant Physiologists. All rights reserved. MenosABSTRACT.
The reduced pool of the abscisic acid (ABA) precursors, ?-? carotenoids, in roots does not account for the substantial increase of ABA content in response to water stress (WS) conditions, suggesting that ABA could be transported from other organs. Basipetal transport was interrupted by stem-girdling and ABA levels were determined in roots after two cycles of WS induced by transplanting plants to dry perlite. Leaf applications of isotope-labelled ABA and reciprocal grafting of ABA-deficient tomato mutants were used to confirm the involvement of aerial organs on root ABA accumulation. Disruption of basipetal transport reduced ABA accumulation in roots and this decrease was more severe after two consecutive WS periods. This effect was linked to a sharp decrease in the ?-? carotenoid pool in roots in response to water deficit. Significant levels of isotope-labelled ABA were transported from leaves to roots, mainly in plants subjected to water dehydration. Furthermore, the use of different ABA-deficient tomato mutants in reciprocal grafting combinations with wild-type genotypes confirmed the involvement of aerial organs in the ABA accumulation in roots. In conclusion, accumulation of ABA in roots after long-term WS periods largely relies on the aerial organs suggesting a reduced ability of the roots to synthesize ABA from carotenoids. Furthermore, plants are able to basipetally transport ABA to sustain high hormone levels in roots.
© The Author 2015. Published by Oxfo... Presentar Todo |
Palabras claves : |
ABA-GE; BASIPETAL TRANSPORT; CAROTENOIDS; DROUGHT; GIRDING; WATER DEFICIT. |
Asunto categoría : |
-- |
Marc : |
LEADER 02528naa a2200289 a 4500 001 1053961 005 2016-05-23 008 2015 bl uuuu u00u1 u #d 022 $aOnline ISSN 1471-9053 - Print ISSN 0032-0781 024 7 $a10.1093/pcp/pcv161$2DOI 100 1 $aMANZI, M. 245 $aRoot ABA accumulation in long-term water-stressed plants is sustained by hormone transport from aerial organs.$h[electronic resource] 260 $c2015 500 $aReceived July 24, 2015. Accepted October 22, 2015. First published online: November 4, 2015 520 $aABSTRACT. The reduced pool of the abscisic acid (ABA) precursors, ?-? carotenoids, in roots does not account for the substantial increase of ABA content in response to water stress (WS) conditions, suggesting that ABA could be transported from other organs. Basipetal transport was interrupted by stem-girdling and ABA levels were determined in roots after two cycles of WS induced by transplanting plants to dry perlite. Leaf applications of isotope-labelled ABA and reciprocal grafting of ABA-deficient tomato mutants were used to confirm the involvement of aerial organs on root ABA accumulation. Disruption of basipetal transport reduced ABA accumulation in roots and this decrease was more severe after two consecutive WS periods. This effect was linked to a sharp decrease in the ?-? carotenoid pool in roots in response to water deficit. Significant levels of isotope-labelled ABA were transported from leaves to roots, mainly in plants subjected to water dehydration. Furthermore, the use of different ABA-deficient tomato mutants in reciprocal grafting combinations with wild-type genotypes confirmed the involvement of aerial organs in the ABA accumulation in roots. In conclusion, accumulation of ABA in roots after long-term WS periods largely relies on the aerial organs suggesting a reduced ability of the roots to synthesize ABA from carotenoids. Furthermore, plants are able to basipetally transport ABA to sustain high hormone levels in roots. © The Author 2015. Published by Oxford University Press on behalf of Japanese Society of Plant Physiologists. All rights reserved. 653 $aABA-GE 653 $aBASIPETAL TRANSPORT 653 $aCAROTENOIDS 653 $aDROUGHT 653 $aGIRDING 653 $aWATER DEFICIT 700 1 $aLADO, J. 700 1 $aRODRIGO, M.J. 700 1 $aZACARÍAS, L. 700 1 $aARBONA, V. 700 1 $aGÓMEZ-CADENAS, A. 773 $tPlant and Cell Physiology, 2015$gv. 56, no.12, p. 2457-2466.
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INIA Las Brujas (LB) |
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| Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
Registro completo
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Biblioteca (s) : |
INIA La Estanzuela; INIA Las Brujas. |
Fecha actual : |
21/02/2014 |
Actualizado : |
18/06/2021 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
Internacional - -- |
Autor : |
TOUS, J.; VILLAMIL, J.; HERMOSO, J.F.; ALBÍN, A. |
Afiliación : |
J. TOUS, Institut de Recerca i Tecnologia Agroalimentilries (IRTA), España.; JOSE MILTON VILLAMIL LUCAS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; J.F. HERMOSO, Institut de Recerca i Tecnologia Agroalimentilries (IRTA), España.; ALFREDO SANTIAGO ALBÍN FERREIRA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
El olivo en Uruguay. |
Fecha de publicación : |
2005 |
Fuente / Imprenta : |
Olivae, 2005, v.6, no.103, p.56-61. |
Idioma : |
Español |
Contenido : |
En Uruguay, la actividad económica más importante del sector agropecuario es la ganadería, aunque en los últimos años otros sectores como el forestal y el frutícola
se han desarrollado significativamente. El cultivo del olivo en este país, aunque con un interés creciente, tiene actualmente muy poca importancia económica. |
Thesagro : |
OLIVOS; URUGUAY; VARIEDADES. |
Asunto categoría : |
-- F01 Cultivo |
Marc : |
LEADER 00765naa a2200193 a 4500 001 1012765 005 2021-06-18 008 2005 bl uuuu u00u1 u #d 100 1 $aTOUS, J. 245 $aEl olivo en Uruguay. 260 $c2005 520 $aEn Uruguay, la actividad económica más importante del sector agropecuario es la ganadería, aunque en los últimos años otros sectores como el forestal y el frutícola se han desarrollado significativamente. El cultivo del olivo en este país, aunque con un interés creciente, tiene actualmente muy poca importancia económica. 650 $aOLIVOS 650 $aURUGUAY 650 $aVARIEDADES 700 1 $aVILLAMIL, J. 700 1 $aHERMOSO, J.F. 700 1 $aALBÍN, A. 773 $tOlivae, 2005$gv.6, no.103, p.56-61.
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