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Biblioteca (s) : |
INIA Las Brujas. |
Fecha : |
13/11/2015 |
Actualizado : |
13/11/2015 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
LADO, J.; CRONJE, P.; ALQUÉZAR, B.; PAGE, A.; MANZI, M.; GÓMEZ-CADENAS, A.; STEAD, A.D.; ZACARÍAS, L.; RODRIGO, M.J. |
Afiliación : |
JOANNA LADO LINDNER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Fruit shading enhances peel color, carotenes accumulation and chromoplast differentiation in red grapefruit. |
Fecha de publicación : |
2015 |
Fuente / Imprenta : |
Physiologia Plantarum, 2015, v.154, no. 4, p. 469-484. |
Serie : |
0031-9317 |
DOI : |
10.1111/ppl.12332 |
Idioma : |
Inglés |
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. In this sense, an accelerated diff... Presentar Todo |
Thesagro : |
CITRUS; CITRUS PARADISI. |
Asunto categoría : |
-- |
Marc : |
LEADER 03223naa a2200265 a 4500 001 1053867 005 2015-11-13 008 2015 bl uuuu u00u1 u #d 024 7 $a10.1111/ppl.12332$2DOI 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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Biblioteca (s) : |
INIA Las Brujas; INIA Tacuarembó. |
Fecha actual : |
21/02/2014 |
Actualizado : |
16/05/2017 |
Tipo de producción científica : |
Serie FPTA |
Autor : |
SILVEIRA, L.; CHRETIES, CH.; ALONSO, J.; AMORÍN, C.; DE IZAGUIRRE, P.; CRISCI, M.; SYMONDS, S.; MARTÍNEZ, L.; GARCÍA, M.; GARCÍA, F.; DELGADO, S.; CLÉRICI, C.; BENTANCOR, L.; HILL, M.; ALLIAUME, F.; CABRAL, P.; AUDICIO, P.; IROUMÉ, A.; HUBER, A.; SCHIPILOV, A. |
Afiliación : |
LUIS SILVEIRA, Universidad de la República (UdelaR)/ Facultad de Ingeniería; CHRISTIAN CHRETIES, Universidad de la República (UdelaR)/ Facultad de Ingeniería; JIMENA ALONSO, Universidad de la República (UdelaR)/ Facultad de Ingeniería; CARLOS AMORÍN, Universidad de la República (UdelaR)/ Facultad de Ingeniería; PEDRO DE IZAGUIRRE, Universidad de la República (UdelaR)/ Facultad de Ingeniería; MAGDALENA CRISCI, Universidad de la República (UdelaR)/ Facultad de Ingeniería; SANTIAGO SYMONDS, Universidad de la República (UdelaR)/ Facultad de Ingeniería; LETICIA MARTÍNEZ, Universidad de la República (UdelaR)/ Facultad de Agronomía; MARIO GARCÍA, Universidad de la República (UdelaR)/ Facultad de Agronomía; FERNANDO GARCÍA, Universidad de la República (UdelaR)/ Facultad de Agronomía; SILVANA DELGADO, Universidad de la República (UdelaR)/ Facultad de Agronomía; CARLOS CLÉRICI, Universidad de la República (UdelaR)/ Facultad de Agronomía; LISETTE BENTANCOR, Universidad de la República (UdelaR)/ Facultad de Agronomía; MARIANA HILL, Universidad de la República (UdelaR)/ Facultad de Agronomía; FLORENCIA ALLIAUME, Universidad de la República (UdelaR)/ Facultad de Agronomía; PABLO CABRAL, Universidad de la República (UdelaR)/ Facultad de Ciencias, Centro de Investigaciones Nucleares (CIN); PAOLA AUDICIO, Universidad de la República (UdelaR)/ Facultad de Ciencias, Centro de Investigaciones Nucleares (CIN); ANDRÉS IROUMÉ, Universidad Austral de Chile (UACh); ANTON HUBER, Universidad Austral de Chile (UACh); ALEJANDRO SCHIPILOV, Consultor. |
Título : |
Efectos de la actividad forestal sobre los recursos suelos y aguas |
Fecha de publicación : |
2011 |
Fuente / Imprenta : |
Montevideo (UY): INIA, 2011. |
Páginas : |
41 p. |
Serie : |
(Serie FPTA-INIA; 32) |
ISBN : |
978-9974-38-331-9 |
ISSN : |
1688-924X |
Idioma : |
Español |
Notas : |
"Proyecto FPTA 210: "Efecto de la actividad forestal sobre los recursos suelos y aguas, en microcuencas similares sometidas a distinto manejo". Período de Ejecución: Mar. 2007-Jun. 2010 |
Contenido : |
El objetivo del presente estudio consistió en evaluar los efectos de la actividad forestal sobre la cantidad y calidad del recurso agua y la pérdida de suelo, en microcuencas similares sometidas a distinto manejo, medido como impacto relativo al campo natural para uso ganadero, que representa el uso tradicional del suelo en Uruguay. |
Thesagro : |
EVALUACION DEL IMPACTO AMBIENTAL; FORESTACION; RECURSOS NATURALES. |
Asunto categoría : |
-- |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/2827/1/18429301111103934.pdf
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Marc : |
LEADER 01606nam a2200433 a 4500 001 1003445 005 2017-05-16 008 2011 bl uuuu u00u1 u #d 020 $a978-9974-38-331-9 022 $a1688-924X 100 1 $aSILVEIRA, L. 245 $aEfectos de la actividad forestal sobre los recursos suelos y aguas 260 $aMontevideo (UY): INIA$c2011 300 $a41 p. 490 $a(Serie FPTA-INIA; 32) 500 $a"Proyecto FPTA 210: "Efecto de la actividad forestal sobre los recursos suelos y aguas, en microcuencas similares sometidas a distinto manejo". Período de Ejecución: Mar. 2007-Jun. 2010 520 $aEl objetivo del presente estudio consistió en evaluar los efectos de la actividad forestal sobre la cantidad y calidad del recurso agua y la pérdida de suelo, en microcuencas similares sometidas a distinto manejo, medido como impacto relativo al campo natural para uso ganadero, que representa el uso tradicional del suelo en Uruguay. 650 $aEVALUACION DEL IMPACTO AMBIENTAL 650 $aFORESTACION 650 $aRECURSOS NATURALES 700 1 $aCHRETIES, CH. 700 1 $aALONSO, J. 700 1 $aAMORÍN, C. 700 1 $aDE IZAGUIRRE, P. 700 1 $aCRISCI, M. 700 1 $aSYMONDS, S. 700 1 $aMARTÍNEZ, L. 700 1 $aGARCÍA, M. 700 1 $aGARCÍA, F. 700 1 $aDELGADO, S. 700 1 $aCLÉRICI, C. 700 1 $aBENTANCOR, L. 700 1 $aHILL, M. 700 1 $aALLIAUME, F. 700 1 $aCABRAL, P. 700 1 $aAUDICIO, P. 700 1 $aIROUMÉ, A. 700 1 $aHUBER, A. 700 1 $aSCHIPILOV, A.
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