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| Registros recuperados : 594 | |
| 141. |  | QUINTELA, R. Curso de citricultura. Montevideo (Uruguay): Facultad de Agronomía, 1974. 49 p. Contenido : Variedades y selección, Germinación, Suelos.- Material mimeografiado| Biblioteca(s): INIA Tacuarembó. |
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Chemical compounds studied in this article: Imazalil (PubChem CID: 37175) / Orthophenylphenol...| Biblioteca(s): INIA Las Brujas. |
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| 148. | | AMORÓS, M. E.; BUENAHORA, J.; ROSSINI, C. Desarrollo de potenciales atrayentes de Diaphorina citri para la optimización del monitoreo con trampas amarillas. [o9*]. Bloque 3: Manejo de insectos-plaga, malezas y enfermedades. In: Sociedad Uruguaya de Fitopatología Jornada Uruguaya de Fitopatología, 4., Jornada Uruguaya de Protección Vegetal, 2., 1° setiembre, 2017, Montevideo, Uruguay. Libro de resúmenes. Montevideo (UY): Sociedad Uruguay de Fitopatología (SUFIT), 2017. p. 47. [o9*]: *Trabajo ya presentado.
Financiamiento: Agencia Nacional de Investigación e Innovación y Programa Nacional de Investigación en Producción Citrícola, INIA Salto Grande.| Biblioteca(s): INIA Las Brujas. |
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| 150. | | Descriptors for citrus Roma (Italia): IBPGR, 1988. 27p.| Biblioteca(s): INIA La Estanzuela; INIA Salto Grande. |
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| 154. | | BENÍTEZ, M.J.; BERTONI, E.; BERTALMIO, A.; RUBIO, L.; RIVAS, C.; MAESO, D.; COLINA, R. Detección y caracterización de virus y viroides en la Citricultura del Uruguay: aportes sobre el nuevo linaje de CTV en Sudamérica y su repercusión en la protección cruzada. In: INIA (Instituto Nacional de Investigación Agropecuaria); Programa Nacional Producción Citrícola. Resultados de investigación en Citricultura: Genética, Sanidad, Productividad. Salto (Uruguay): INIA, 2015. p. 107-112 (Serie Actividades de Difusión; 752).| Biblioteca(s): INIA Las Brujas. |
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| 155. | | SIMEONE, M.; GÓMEZ, C.; BERTALMIO, A.; RUIZ, E.; HAUTEVILLE, C.; GODOY, L.; TITO, B.; GARCÍA, M.L. Detection of citrus psorosis virus by RT‐qPCR validated by diagnostic parameters. Plant Pathology, May 2021, Volume 70, Issue 4, Pages 980-986. Doi: https://doi.org/10.1111/ppa.13341 Article history: Received, 8 September 2020; Accepted, 28 December 2020, First published, 18 January 2021.
This work was supported by Agencia Nacional de Promoción Científica y Tecnológica (ANPCYT) PICT 2014‐1007 and PICT Start UP...| Biblioteca(s): INIA Las Brujas. |
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| Registros recuperados : 594 | |
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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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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha actual : |
13/11/2015 |
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Actualizado : |
13/11/2015 |
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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.; CRONJE, P.; ALQUÉZAR, B.; PAGE, A.; MANZI, M.; GÓMEZ-CADENAS, A.; STEAD, A.D.; ZACARÍAS, L.; RODRIGO, M.J. |
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Afiliación : |
JOANNA LADO LINDNER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Fruit shading enhances peel color, carotenes accumulation and chromoplast differentiation in red grapefruit. |
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Fecha de publicación : |
2015 |
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Fuente / Imprenta : |
Physiologia Plantarum, 2015, v.154, no. 4, p. 469-484. |
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Serie : |
0031-9317 |
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DOI : |
10.1111/ppl.12332 |
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Idioma : |
Inglés |
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Contenido : |
ABSTRACT.
The distinctive color of red grapefruits is due to lycopene, an unusual carotene in citrus. It has been observed that red ?Star Ruby? (SR) grapefruits grown inside the tree canopy develop a more intense red coloration than those exposed to higher light intensities. To investigate the effect of light on SR peel pigmentation, fruit were bagged or exposed to normal photoperiodic conditions, and changes in carotenoids, expression of carotenoid biosynthetic genes and plastid ultrastructure in the peel were analyzed. Light avoidance accelerated chlorophyll breakdown and induced carotenoid accumulation, rendering fruits with an intense coloration. Remarkably, lycopene levels in the peel of shaded fruits were 49-fold higher than in light-exposed fruit while concentrations of downstream metabolites were notably reduced, suggesting a bottleneck at the lycopene cyclization in the biosynthetic pathway. Paradoxically, this increment in carotenoids in covered fruit was not mirrored by changes in mRNA levels of carotenogenic genes, which were mostly up-regulated by light. In addition, covered fruits experienced profound changes in chromoplast differentiation, and the relative expression of genes related to chromoplast
development was enhanced. Ultrastructural analysis of plastids revealed an acceleration of chloroplasts to chromoplast transition in the peel of covered fruits concomitantly with development of lycopene crystals and plastoglobuli. In this sense, an accelerated differentiation of chromoplasts may provide biosynthetic capacity and a sink for carotenoids without involving major changes in transcript levels of carotenogenic genes. Light signals seem to regulate carotenoid accumulation at the molecular and structural level by
influencing both biosynthetic capacity and sink strength. Abbreviations ? 𝛽CHX, 𝛽-carotene hydroxylase; 𝛽LCY, lycopene cyclase 𝛽; ABA, abscisic acid; C, covered; Chl, chlorophyll; DXS, 1-deoxy-D-xylulose-5-phosphate synthase; FIB, fibrillin; FW, fresh weight; GGPP, geranyl geranyl pyrophosphate; GGPPS, geranyl geranyl pyrophosphate synthase; HDR, hydroxymethylbutenyl diphosphate reductase; HPLC, high-performance liquid chromatography; MEP, methyl-D-erythritol-4-phosphate; NC, non-covered; PCR, polymerase chain reaction; PDS, phytoene desaturase; PSY, phytoene synthase; sHSP, small heat shock protein; SR, Star Ruby; ZDS, 𝜁-carotene desaturase.
Physiol. Plant. MenosABSTRACT.
The distinctive color of red grapefruits is due to lycopene, an unusual carotene in citrus. It has been observed that red ?Star Ruby? (SR) grapefruits grown inside the tree canopy develop a more intense red coloration than those exposed to higher light intensities. To investigate the effect of light on SR peel pigmentation, fruit were bagged or exposed to normal photoperiodic conditions, and changes in carotenoids, expression of carotenoid biosynthetic genes and plastid ultrastructure in the peel were analyzed. Light avoidance accelerated chlorophyll breakdown and induced carotenoid accumulation, rendering fruits with an intense coloration. Remarkably, lycopene levels in the peel of shaded fruits were 49-fold higher than in light-exposed fruit while concentrations of downstream metabolites were notably reduced, suggesting a bottleneck at the lycopene cyclization in the biosynthetic pathway. Paradoxically, this increment in carotenoids in covered fruit was not mirrored by changes in mRNA levels of carotenogenic genes, which were mostly up-regulated by light. In addition, covered fruits experienced profound changes in chromoplast differentiation, and the relative expression of genes related to chromoplast
development was enhanced. Ultrastructural analysis of plastids revealed an acceleration of chloroplasts to chromoplast transition in the peel of covered fruits concomitantly with development of lycopene crystals and plastoglobuli. ... Presentar Todo |
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Thesagro : |
CITRUS; CITRUS PARADISI. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 03257naa a2200265 a 4500
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100 1 $aLADO, J.
245 $aFruit shading enhances peel color, carotenes accumulation and chromoplast differentiation in red grapefruit.$h[electronic resource]
260 $c2015
490 $a0031-9317
520 $aABSTRACT. The distinctive color of red grapefruits is due to lycopene, an unusual carotene in citrus. It has been observed that red ?Star Ruby? (SR) grapefruits grown inside the tree canopy develop a more intense red coloration than those exposed to higher light intensities. To investigate the effect of light on SR peel pigmentation, fruit were bagged or exposed to normal photoperiodic conditions, and changes in carotenoids, expression of carotenoid biosynthetic genes and plastid ultrastructure in the peel were analyzed. Light avoidance accelerated chlorophyll breakdown and induced carotenoid accumulation, rendering fruits with an intense coloration. Remarkably, lycopene levels in the peel of shaded fruits were 49-fold higher than in light-exposed fruit while concentrations of downstream metabolites were notably reduced, suggesting a bottleneck at the lycopene cyclization in the biosynthetic pathway. Paradoxically, this increment in carotenoids in covered fruit was not mirrored by changes in mRNA levels of carotenogenic genes, which were mostly up-regulated by light. In addition, covered fruits experienced profound changes in chromoplast differentiation, and the relative expression of genes related to chromoplast development was enhanced. Ultrastructural analysis of plastids revealed an acceleration of chloroplasts to chromoplast transition in the peel of covered fruits concomitantly with development of lycopene crystals and plastoglobuli. In this sense, an accelerated differentiation of chromoplasts may provide biosynthetic capacity and a sink for carotenoids without involving major changes in transcript levels of carotenogenic genes. Light signals seem to regulate carotenoid accumulation at the molecular and structural level by influencing both biosynthetic capacity and sink strength. Abbreviations ? 𝛽CHX, 𝛽-carotene hydroxylase; 𝛽LCY, lycopene cyclase 𝛽; ABA, abscisic acid; C, covered; Chl, chlorophyll; DXS, 1-deoxy-D-xylulose-5-phosphate synthase; FIB, fibrillin; FW, fresh weight; GGPP, geranyl geranyl pyrophosphate; GGPPS, geranyl geranyl pyrophosphate synthase; HDR, hydroxymethylbutenyl diphosphate reductase; HPLC, high-performance liquid chromatography; MEP, methyl-D-erythritol-4-phosphate; NC, non-covered; PCR, polymerase chain reaction; PDS, phytoene desaturase; PSY, phytoene synthase; sHSP, small heat shock protein; SR, Star Ruby; ZDS, 𝜁-carotene desaturase. Physiol. Plant.
650 $aCITRUS
650 $aCITRUS PARADISI
700 1 $aCRONJE, P.
700 1 $aALQUÉZAR, B.
700 1 $aPAGE, A.
700 1 $aMANZI, M.
700 1 $aGÓMEZ-CADENAS, A.
700 1 $aSTEAD, A.D.
700 1 $aZACARÍAS, L.
700 1 $aRODRIGO, M.J.
773 $tPhysiologia Plantarum, 2015$gv.154, no. 4, p. 469-484.
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