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 | Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
20/11/2015 |
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Actualizado : |
23/05/2016 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
MANZI, M.; LADO, J.; RODRIGO, M.J.; ZACARÍAS, L.; ARBONA, V.; GÓMEZ-CADENAS, A. |
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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. |
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Título : |
Root ABA accumulation in long-term water-stressed plants is sustained by hormone transport from aerial organs. |
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Fecha de publicación : |
2015 |
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Fuente / Imprenta : |
Plant and Cell Physiology, 2015, v. 56, no.12, p. 2457-2466. |
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ISSN : |
Online ISSN 1471-9053 - Print ISSN 0032-0781 |
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DOI : |
10.1093/pcp/pcv161 |
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Idioma : |
Inglés |
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Notas : |
Received July 24, 2015. Accepted October 22, 2015. First published online: November 4, 2015 |
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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 |
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Palabras claves : |
ABA-GE; BASIPETAL TRANSPORT; CAROTENOIDS; DROUGHT; GIRDING; WATER DEFICIT. |
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Asunto categoría : |
-- |
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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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Registro original : |
INIA Las Brujas (LB) |
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| Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha actual : |
21/02/2014 |
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Actualizado : |
30/09/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
B - 1 |
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Autor : |
MORON, A.; COZZOLINO, D. |
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Afiliación : |
DAVID ALEJANDRO MORON YACOEL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; DANIEL COZZOLINO GÓMEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Determination of potentially mineralizable nitrogen and nitrogen in particulate organic matter fractions in soil by visible and near-infrared reflectance spectroscopy. |
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Fecha de publicación : |
2004 |
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Fuente / Imprenta : |
Journal of Agricultural Science, June 2004, Volume 142, Issue 3, Pages 335-343. |
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DOI : |
10.1017/S0021859604004290 |
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Idioma : |
Inglés |
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Notas : |
Article history:Revised MS received 2 July 2004 |
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Contenido : |
SUMMARY:
Visible (VIS) and near-infrared reflectance spectroscopy (NIRS) combined with multivariate data analysis was used to predict potentially mineralizable nitrogen (PMN) and nitrogen in particulate organic matter fractions (PSOM-N). Soil samples from a long-term experiment (n=24) as well as
soils under commercial management (n=160) in Uruguay (South America) were analysed. Samples were scanned in a NIRS 6500 monochromator instrument by reflectance (400?2500 nm). Modified partial least square regression (MPLS) and cross validation were used to develop the calibration
models between NIRS data and reference values. NIRS calibration models gave a coefficient of determination for the calibration (R2 CAL)>0.80 and the standard deviation of reference data to standard error in cross validation (RPD) ratio ranging from 2 to 5. 5 for the variables evaluated. The
results obtained in the study showed that NIRS could have the potential to determine PMN and PSOM-N fractions in soils under different agronomic conditions. However, the relatively limited number of samples led us to be cautious in terms of conclusions and to extend the results of this work
to similar conditions. |
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Palabras claves : |
AGRICULTURAL SOILS; MINERALIZATION; MULTIVARIATE ANALYSIS; NITROGEN CONTNET; ORGANIC SOILS; SOIL ORGANIC MATTER(SOM). |
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Thesagro : |
NIRS. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 02043naa a2200241 a 4500
001 1035241
005 2019-09-30
008 2004 bl uuuu u00u1 u #d
024 7 $a10.1017/S0021859604004290$2DOI
100 1 $aMORON, A.
245 $aDetermination of potentially mineralizable nitrogen and nitrogen in particulate organic matter fractions in soil by visible and near-infrared reflectance spectroscopy.$h[electronic resource]
260 $c2004
500 $aArticle history:Revised MS received 2 July 2004
520 $aSUMMARY: Visible (VIS) and near-infrared reflectance spectroscopy (NIRS) combined with multivariate data analysis was used to predict potentially mineralizable nitrogen (PMN) and nitrogen in particulate organic matter fractions (PSOM-N). Soil samples from a long-term experiment (n=24) as well as soils under commercial management (n=160) in Uruguay (South America) were analysed. Samples were scanned in a NIRS 6500 monochromator instrument by reflectance (400?2500 nm). Modified partial least square regression (MPLS) and cross validation were used to develop the calibration models between NIRS data and reference values. NIRS calibration models gave a coefficient of determination for the calibration (R2 CAL)>0.80 and the standard deviation of reference data to standard error in cross validation (RPD) ratio ranging from 2 to 5. 5 for the variables evaluated. The results obtained in the study showed that NIRS could have the potential to determine PMN and PSOM-N fractions in soils under different agronomic conditions. However, the relatively limited number of samples led us to be cautious in terms of conclusions and to extend the results of this work to similar conditions.
650 $aNIRS
653 $aAGRICULTURAL SOILS
653 $aMINERALIZATION
653 $aMULTIVARIATE ANALYSIS
653 $aNITROGEN CONTNET
653 $aORGANIC SOILS
653 $aSOIL ORGANIC MATTER(SOM)
700 1 $aCOZZOLINO, D.
773 $tJournal of Agricultural Science, June 2004, Volume 142, Issue 3, Pages 335-343.
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