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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha : |
17/06/2015 |
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Actualizado : |
25/09/2018 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
GODWIN, I.; LI, L.; LUIJBEN, K.; OELBRANDT, N.; VELAZCO, J.I.; MILLER, J.; HEGARTY, R. |
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Afiliación : |
SCHOOL OF ENVIRONMENTAL AND RURAL SCIENCE, UNIVERSITY OF NEW ENGLAND; SCHOOL OF ENVIRONMENTAL AND RURAL SCIENCE, UNIVERSITY OF NEW ENGLAND; SCHOOL OF ENVIRONMENTAL AND RURAL SCIENCE, UNIVERSITY OF NEW ENGLAND; SCHOOL OF ENVIRONMENTAL AND RURAL SCIENCE, UNIVERSITY OF NEW ENGLAND; JOSÉ IGNACIO VELAZCO DE LOS REYES, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; SCHOOL OF ENVIRONMENTAL AND RURAL SCIENCE, UNIVERSITY OF NEW ENGLAND; SCHOOL OF ENVIRONMENTAL AND RURAL SCIENCE, UNIVERSITY OF NEW ENGLAND. |
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Título : |
The effects of chronic nitrate supplementation on erythrocytic methaemoglobin reduction in cattle. |
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Fecha de publicación : |
2015 |
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Fuente / Imprenta : |
Animal Production Science, 2015, v. 55(5), p. 611-616. |
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ISSN : |
1836-0939; eISSN: 1836-5787 |
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DOI : |
http://dx.doi.org/10.1071/AN13366 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 2 September 2013, accepted 6 February 2014, published online 8 May 2014. |
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Contenido : |
Abstract:
Calcium nitrate and urea were fed as a supplement on an isonitrogenous basis to Angus steers and their erythrocytic methaemoglobin concentrations and NADH- and NADPH-methaemoglobin reductase levels were measured over a 54-day period. Methaemoglobin concentrations remained elevated despite increases in NADH-methaemoglobin reductase activity. In a second experiment, Brahman cross steers were fed either calcium nitrate or urea supplements for 111 days. Blood cells were then taken, washed and exposed to sodium nitrite to convert all haemoglobin to methaemoglobin.
The rates of glycolysis and methaemoglobin reduction were measured following incubation of these cells in buffers containing 1, 5 or 10 mM inorganic phosphate. Glucose consumption and methaemoglobin reduction were increased by inorganic phosphate and were more rapid in those animals supplemented with nitrate. Lactate production of erythrocytes was reduced in those animals fed nitrate. It is concluded that adaptation to chronic nitrite exposure occurs in the erythron, resulting in greater methaemoglobin reduction potential and that there is competition between NADH-methaemoglobin reductase and lactate dehydrogenase for NADH. |
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Palabras claves : |
EMISIONES DE GASES; EMISIONES DE METANO; FOSFATO INORGÁNICO; INORGANIC PHOSPHATE; METAHEMOGLOBINA REDUCTASA; METHAEMOGLOBIN REDUCTASE. |
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Thesagro : |
BOVINOS; DIETA; SUPLEMENTACION. |
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Asunto categoría : |
L20 Ecología animal |
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Marc : |
LEADER 02263naa a2200337 a 4500
001 1052767
005 2018-09-25
008 2015 bl uuuu u00u1 u #d
022 $a1836-0939; eISSN: 1836-5787
024 7 $ahttp://dx.doi.org/10.1071/AN13366$2DOI
100 1 $aGODWIN, I.
245 $aThe effects of chronic nitrate supplementation on erythrocytic methaemoglobin reduction in cattle.
260 $c2015
500 $aArticle history: Received 2 September 2013, accepted 6 February 2014, published online 8 May 2014.
520 $aAbstract: Calcium nitrate and urea were fed as a supplement on an isonitrogenous basis to Angus steers and their erythrocytic methaemoglobin concentrations and NADH- and NADPH-methaemoglobin reductase levels were measured over a 54-day period. Methaemoglobin concentrations remained elevated despite increases in NADH-methaemoglobin reductase activity. In a second experiment, Brahman cross steers were fed either calcium nitrate or urea supplements for 111 days. Blood cells were then taken, washed and exposed to sodium nitrite to convert all haemoglobin to methaemoglobin. The rates of glycolysis and methaemoglobin reduction were measured following incubation of these cells in buffers containing 1, 5 or 10 mM inorganic phosphate. Glucose consumption and methaemoglobin reduction were increased by inorganic phosphate and were more rapid in those animals supplemented with nitrate. Lactate production of erythrocytes was reduced in those animals fed nitrate. It is concluded that adaptation to chronic nitrite exposure occurs in the erythron, resulting in greater methaemoglobin reduction potential and that there is competition between NADH-methaemoglobin reductase and lactate dehydrogenase for NADH.
650 $aBOVINOS
650 $aDIETA
650 $aSUPLEMENTACION
653 $aEMISIONES DE GASES
653 $aEMISIONES DE METANO
653 $aFOSFATO INORGÁNICO
653 $aINORGANIC PHOSPHATE
653 $aMETAHEMOGLOBINA REDUCTASA
653 $aMETHAEMOGLOBIN REDUCTASE
700 1 $aLI, L.
700 1 $aLUIJBEN, K.
700 1 $aOELBRANDT, N.
700 1 $aVELAZCO, J.I.
700 1 $aMILLER, J.
700 1 $aHEGARTY, R.
773 $tAnimal Production Science, 2015$gv. 55(5), p. 611-616.
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INIA Treinta y Tres (TT) |
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| Acceso al texto completo restringido a Biblioteca INIA Salto Grande. Por información adicional contacte bibliosg@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Salto Grande. |
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Fecha actual : |
24/10/2014 |
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Actualizado : |
17/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
LADO, J.; RODRIGO, M.J.; CRONJE, P.; ZACARÍAS, L. |
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Afiliación : |
JOANNA LADO LINDNER, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; M.J. RODRIGO, IATA (Instituto de Agroquímica y Tecnología de Alimentos), España; P. CRONJE, Citrus Research International (CRI), University of Stellenbosch, Sudáfrica; L. ZACARÍAS, IATA (Instituto de Agroquímica y Tecnología de Alimentos), España. |
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Título : |
Involvement of lycopene in the induction of tolerance to chilling injury in grapefruit. |
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Fecha de publicación : |
2015 |
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Fuente / Imprenta : |
Postharvest Biology & Technology, 2015, v.100, p. 176-186. |
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ISSN : |
0925-5214 |
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DOI : |
10.1016/j.postharvbio.2014.10.002 |
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Idioma : |
Inglés |
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Contenido : |
ABSTRACT.
Grapefruit are among the more sensitive Citrus varieties likely to develop chilling injury (CI) symptoms during postharvest storage at low temperatures. Comparative observations of the incidence of CI in fruit of white Marsh (MSH) and red Star Ruby (SR) grapefruit during postharvest storage at 2 C plus 7 days at 20 C to simulate shelf-life revealed that (1) the former was consistently more sensitive to CI, developing cold damage uniformly throughout the whole rind surface, and (2) more strikingly, CI symptoms in fruit of SR grapefruit were restricted to the yellow areas of the rind and the red-colored zones were almost absent of cold damage. This tolerance to CI in red flavedo was associated with high carotenoid (2) and lycopene (14) contents, as compared with yellow-colored flavedo. Absence of chilling damage in red areas of SR grapefruit rind was confirmed by cellular ultrastructure observations, in which these epidermal cells were intact, with a well-defined structure and compact vacuoles filled with content. Cells of yellow-colored tissue developing CI, were collapsed, with a contracted vacuole and shrinking organelles. To explore whether the tolerance to CI in red areas of grapefruit rind was due to an elevated lycopene concentration, chemical and environmental stimulation of this carotenoid was performed in
fruit of both grapefruit varieties. Application of the inhibitor of the lycopene cyclase activity, CPTA (2-(4- chlorophenylthio) triethylamine hydrochloride) induced red coloration, increased lycopene accumulation (32) and significantly delayed development of CI symptoms in the rind the CI-sensitive MSH.
Bagging of SR grapefruit enhanced a homogenous red coloration and substantially induced lycopene accumulation (75). CI symptoms in bagged fruit were notably delayed and reduced, as compared with non-bagged yellow fruit, upon subsequent storage at 2 C for up to 58 days and 7 days at 20 C. Analysis of the expression of ethylene biosynthetic genes (ACS1, ACS2 and ACO) revealed a significant induction in chilling-damaged tissue of both varieties that was almost absent in red chilling-tolerant tissue. Similarly, accumulation of transcripts of the ethylene receptors ETR1 and ETR3 were also associated with chilling damage, but a cold factor appears to also mediate the expression of these genes. Taken together, our results indicate that high lycopene concentration appears to be responsible for the induction of tolerance to chilling in the red-colored areas of the flavedo of grapefruit during postharvest storage at low temperatures.
ã 2014 Elsevier B.V. All rights reserved. MenosABSTRACT.
Grapefruit are among the more sensitive Citrus varieties likely to develop chilling injury (CI) symptoms during postharvest storage at low temperatures. Comparative observations of the incidence of CI in fruit of white Marsh (MSH) and red Star Ruby (SR) grapefruit during postharvest storage at 2 C plus 7 days at 20 C to simulate shelf-life revealed that (1) the former was consistently more sensitive to CI, developing cold damage uniformly throughout the whole rind surface, and (2) more strikingly, CI symptoms in fruit of SR grapefruit were restricted to the yellow areas of the rind and the red-colored zones were almost absent of cold damage. This tolerance to CI in red flavedo was associated with high carotenoid (2) and lycopene (14) contents, as compared with yellow-colored flavedo. Absence of chilling damage in red areas of SR grapefruit rind was confirmed by cellular ultrastructure observations, in which these epidermal cells were intact, with a well-defined structure and compact vacuoles filled with content. Cells of yellow-colored tissue developing CI, were collapsed, with a contracted vacuole and shrinking organelles. To explore whether the tolerance to CI in red areas of grapefruit rind was due to an elevated lycopene concentration, chemical and environmental stimulation of this carotenoid was performed in
fruit of both grapefruit varieties. Application of the inhibitor of the lycopene cyclase activity, CPTA (2-(4- chlorophenylthio) triethylamine hydrochlo... Presentar Todo |
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Thesagro : |
ALMACENAMIENTO EN FRIO; CITRUS; ESTRES TERMICO; FRIO; TECNOLOGIA POSCOSECHA; TOLERANCIA AL FRIO. |
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Asunto categoría : |
F01 Cultivo |
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Marc : |
LEADER 03375naa a2200253 a 4500
001 1051284
005 2019-10-17
008 2015 bl uuuu u00u1 u #d
022 $a0925-5214
024 7 $a10.1016/j.postharvbio.2014.10.002$2DOI
100 1 $aLADO, J.
245 $aInvolvement of lycopene in the induction of tolerance to chilling injury in grapefruit.$h[electronic resource]
260 $c2015
520 $aABSTRACT. Grapefruit are among the more sensitive Citrus varieties likely to develop chilling injury (CI) symptoms during postharvest storage at low temperatures. Comparative observations of the incidence of CI in fruit of white Marsh (MSH) and red Star Ruby (SR) grapefruit during postharvest storage at 2 C plus 7 days at 20 C to simulate shelf-life revealed that (1) the former was consistently more sensitive to CI, developing cold damage uniformly throughout the whole rind surface, and (2) more strikingly, CI symptoms in fruit of SR grapefruit were restricted to the yellow areas of the rind and the red-colored zones were almost absent of cold damage. This tolerance to CI in red flavedo was associated with high carotenoid (2) and lycopene (14) contents, as compared with yellow-colored flavedo. Absence of chilling damage in red areas of SR grapefruit rind was confirmed by cellular ultrastructure observations, in which these epidermal cells were intact, with a well-defined structure and compact vacuoles filled with content. Cells of yellow-colored tissue developing CI, were collapsed, with a contracted vacuole and shrinking organelles. To explore whether the tolerance to CI in red areas of grapefruit rind was due to an elevated lycopene concentration, chemical and environmental stimulation of this carotenoid was performed in fruit of both grapefruit varieties. Application of the inhibitor of the lycopene cyclase activity, CPTA (2-(4- chlorophenylthio) triethylamine hydrochloride) induced red coloration, increased lycopene accumulation (32) and significantly delayed development of CI symptoms in the rind the CI-sensitive MSH. Bagging of SR grapefruit enhanced a homogenous red coloration and substantially induced lycopene accumulation (75). CI symptoms in bagged fruit were notably delayed and reduced, as compared with non-bagged yellow fruit, upon subsequent storage at 2 C for up to 58 days and 7 days at 20 C. Analysis of the expression of ethylene biosynthetic genes (ACS1, ACS2 and ACO) revealed a significant induction in chilling-damaged tissue of both varieties that was almost absent in red chilling-tolerant tissue. Similarly, accumulation of transcripts of the ethylene receptors ETR1 and ETR3 were also associated with chilling damage, but a cold factor appears to also mediate the expression of these genes. Taken together, our results indicate that high lycopene concentration appears to be responsible for the induction of tolerance to chilling in the red-colored areas of the flavedo of grapefruit during postharvest storage at low temperatures. ã 2014 Elsevier B.V. All rights reserved.
650 $aALMACENAMIENTO EN FRIO
650 $aCITRUS
650 $aESTRES TERMICO
650 $aFRIO
650 $aTECNOLOGIA POSCOSECHA
650 $aTOLERANCIA AL FRIO
700 1 $aRODRIGO, M.J.
700 1 $aCRONJE, P.
700 1 $aZACARÍAS, L.
773 $tPostharvest Biology & Technology, 2015$gv.100, p. 176-186.
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