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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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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 : |
07/07/2020 |
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Tipo de producción científica : |
Trabajos en Congresos/Conferencias |
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Autor : |
VÁZQUEZ, D.; WILLIAMS, P.C.; WATTS, B. |
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Afiliación : |
DANIEL VÁZQUEZ PEYRONEL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
NIR spectroscopy as a tool for quality screening. |
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Fecha de publicación : |
2007 |
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Fuente / Imprenta : |
ln: International Wheat Conference, 7., 27 Nov-2 Dec 2005, Mar del Plata, AR Buck, H.T.; Nisi, J.E.; Salomón, N., ed. Wheat production in stressed environments : proceedings. Dordrecht: Springer, 2007. |
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Páginas : |
p. 527-533 |
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Serie : |
(Developments in Plant Breeding ; 12) |
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Idioma : |
Inglés |
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Notas : |
Donación S. Germán, 2007 |
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Contenido : |
Abstract: Simplicity of sample preparation, rapidity of the whole analytical procedure and small sample size requirements make near-infrared spectroscopy (NIRS) a very attractive tool for quality screening in wheat breeding programs. Although good results have been achieved for protein content, limited results have been obtained for other quality components such as protein functionality. The suitability of this technology to measure different quality components was studied using different sets of Uruguayan wheat samples n = 73–470#4;. Reference methods included protein composition, hardness, rheological variables and baking tests. Whole and ground wheat grain, and white flour samples were scanned with a Foss (NIRSystem) Model 6500 spectrophotometer. Differences among several math pretreatments for derivatives, gap and segment (smoothing) were
not critical to the quality of the calibration. Results were best when flour was scanned, but were also acceptable using ground wheat and even whole grain. Increasing the size of the scanned sample did not improve results, however duplicating the NIR spectra resulted in better calibrations. Calibration equations obtained were suitable to determine three independent quality components in one simple and fast operation, although with
different accuracies. Protein content was predicted with accuracy similar to that of the reference method (standard error of prediction = SEP = 0.16%; coefficient of determination = r2 = 0#5;99). Hardness calibration was successful only with the ground sample (SEP < 2%#6; r2 = 0#5;85). Results obtained for protein functionality variables had lower coefficients of determination but were sufficient for screening breeding lines. Coefficients of determination of calibration sets for the variables alveogram extensibility (L), MenosAbstract: Simplicity of sample preparation, rapidity of the whole analytical procedure and small sample size requirements make near-infrared spectroscopy (NIRS) a very attractive tool for quality screening in wheat breeding programs. Although good results have been achieved for protein content, limited results have been obtained for other quality components such as protein functionality. The suitability of this technology to measure different quality components was studied using different sets of Uruguayan wheat samples n = 73–470#4;. Reference methods included protein composition, hardness, rheological variables and baking tests. Whole and ground wheat grain, and white flour samples were scanned with a Foss (NIRSystem) Model 6500 spectrophotometer. Differences among several math pretreatments for derivatives, gap and segment (smoothing) were
not critical to the quality of the calibration. Results were best when flour was scanned, but were also acceptable using ground wheat and even whole grain. Increasing the size of the scanned sample did not improve results, however duplicating the NIR spectra resulted in better calibrations. Calibration equations obtained were suitable to determine three independent quality components in one simple and fast operation, although with
different accuracies. Protein content was predicted with accuracy similar to that of the reference method (standard error of prediction = SEP = 0.16%; coefficient of determination = r2 = 0#5;99). Hardness cali... Presentar Todo |
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Palabras claves : |
NIR (NEAR INFRARED REFLECTANCE); QUALITY. |
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Thesagro : |
ESPECTROSCOPIA INFRARROJA; FITOMEJORAMIENTO; INSPECCIÓN DE CALIDAD; TRITICUM. |
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Asunto categoría : |
F01 Cultivo |
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Marc : |
LEADER 02684naa a2200253 a 4500
001 1048187
005 2020-07-07
008 2007 bl uuuu u00u1 u #d
100 1 $aVÁZQUEZ, D.
245 $aNIR spectroscopy as a tool for quality screening.
260 $c2007
300 $ap. 527-533
490 $a(Developments in Plant Breeding ; 12)
500 $aDonación S. Germán, 2007
520 $aAbstract: Simplicity of sample preparation, rapidity of the whole analytical procedure and small sample size requirements make near-infrared spectroscopy (NIRS) a very attractive tool for quality screening in wheat breeding programs. Although good results have been achieved for protein content, limited results have been obtained for other quality components such as protein functionality. The suitability of this technology to measure different quality components was studied using different sets of Uruguayan wheat samples n = 73–470#4;. Reference methods included protein composition, hardness, rheological variables and baking tests. Whole and ground wheat grain, and white flour samples were scanned with a Foss (NIRSystem) Model 6500 spectrophotometer. Differences among several math pretreatments for derivatives, gap and segment (smoothing) were not critical to the quality of the calibration. Results were best when flour was scanned, but were also acceptable using ground wheat and even whole grain. Increasing the size of the scanned sample did not improve results, however duplicating the NIR spectra resulted in better calibrations. Calibration equations obtained were suitable to determine three independent quality components in one simple and fast operation, although with different accuracies. Protein content was predicted with accuracy similar to that of the reference method (standard error of prediction = SEP = 0.16%; coefficient of determination = r2 = 0#5;99). Hardness calibration was successful only with the ground sample (SEP < 2%#6; r2 = 0#5;85). Results obtained for protein functionality variables had lower coefficients of determination but were sufficient for screening breeding lines. Coefficients of determination of calibration sets for the variables alveogram extensibility (L),
650 $aESPECTROSCOPIA INFRARROJA
650 $aFITOMEJORAMIENTO
650 $aINSPECCIÓN DE CALIDAD
650 $aTRITICUM
653 $aNIR (NEAR INFRARED REFLECTANCE)
653 $aQUALITY
700 1 $aWILLIAMS, P.C.
700 1 $aWATTS, B.
773 $tln: International Wheat Conference, 7., 27 Nov-2 Dec 2005, Mar del Plata, AR Buck, H.T.; Nisi, J.E.; Salomón, N., ed. Wheat production in stressed environments : proceedings. Dordrecht: Springer, 2007.
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