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| 8. |  | Capra, G. Instalaciones y equipo para aves ln: Jornadas para Productores Avícolas, 1977, Montevideo, Uruguay Montevideo (Uruguay): Facultad de Agronomía; OEA, 1977. s.p.| Biblioteca(s): INIA La Estanzuela. |
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| 15. | | BLUMETTO, O.; CAPRA, G. Animal behavior studies as a tool for improving husbandry strategies in pigs fa ttening systems. En: Congreso Asociación Uruguaya de Producción Animal (AUPA) (4º, 29-30 Oct. 2012, Montevideo, UY). 2012. [Actas], Montevideo, Uruguay. Veterinaria, 2012, vol. 72, no. 48, Supp. 1, p.166.| Biblioteca(s): INIA Las Brujas. |
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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 |
|
Thesagro : |
ALMACENAMIENTO EN FRIO; CITRUS; ESTRES TERMICO; FRIO; TECNOLOGIA POSCOSECHA; TOLERANCIA AL FRIO. |
|
Asunto categoría : |
F01 Cultivo |
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Marc : |
LEADER 03375naa a2200253 a 4500
001 1051284
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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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