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| 21. |  | RODRIGO, M.J.; LADO, J.; ALÓS, E.; ALQUÉZAR, B.; DERY, O.; HIRSCHBERG, J.; ZACARÍAS, L. A mutant allele of ζ-carotene isomerase (Z-ISO) is associated with the yellow pigmentation of the "pinalate" sweet orange mutant and reveals new insights into its role in fruit carotenogenesis. BMC Plant Biology, 4 November 2019, Volume 19, Issue 1, Article number 465. OPEN ACCESS. Doi: DOI: 10.1186/s12870-019-2078-2 Article history: Received: 17 June 2019 / Accepted: 16 October 2019 / Published online: 4 November 2019.
Funding text: Financial support of the research grants AGL2012?34576 and AGL2015? 70218 (Ministerio Economía y Competitividad,...| Biblioteca(s): INIA Las Brujas. |
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| 22. | | MANZI, M.; LADO, J.; RODRIGO, M.J.; ZACARÍAS, L.; ARBONA, V.; GÓMEZ-CADENAS, A. Root ABA accumulation in long-term water-stressed plants is sustained by hormone transport from aerial organs. Plant and Cell Physiology, 2015, v. 56, no.12, p. 2457-2466. Received July 24, 2015. Accepted October 22, 2015. First published online: November 4, 2015| Biblioteca(s): INIA Las Brujas. |
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| 23. | | SALVO, M.; REY, F.; ARRUABARRENA, A.; GAMBETTA, G.; RODRIGO, M. J.; ZACARÍAS, L.; LADO, J. Transcriptional analysis of C-repeat binding factors in fruit of citrus species with differential sensitivity to chilling injury during postharvest storage. International Journal of Molecular Sciences, 2 January 2021, Volume 22, Issue 2, Article number 804, Pages 1-20. OPEN ACCESS. Doi: https://doi.org/10.3390/ijms22020804 Article history: Received 9 December 2020; Revised 5 January 2021; Accepted 12 January 2021; Published 15 January 2021.
This work was supported by a research grant from the National Agency of Research and Innovation (ANII-Uruguay) by the...| Biblioteca(s): INIA Las Brujas. |
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| 24. | | LADO, J.; ALÓS, E.; MANZI, M.; CRONJE, P.J.R.; GÓMEZ-CADENAS, A.; RODRIGO, M.J.; ZACARÍAS, L. Light regulation of carotenoid biosynthesis in the peel of mandarin and sweet orange fruits. Frontiers in Plant Science, 15 October 2019, Volume 10, Article number 1288. OPEN ACCESS. Doi: 10.3389/fpls.2019.01288 Article history: Received: 14 June 2019 / Accepted: 17 September 2019 / Published: 15 October 2019.
Funding text: MR and LZ are members of Eurocaroten (COST_Action CA15136) and CaRed (Spanish Carotenoid Network BIO2017-90877-REDT,...| Biblioteca(s): INIA Las Brujas. |
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| 25. | | LADO, J.; CRONJE, P.; ALQUÉZAR, B.; PAGE, A.; MANZI, M.; GÓMEZ-CADENAS, A.; STEAD, A.D.; ZACARÍAS, L.; RODRIGO, M.J. Fruit shading enhances peel color, carotenes accumulation and chromoplast differentiation in red grapefruit. Physiologia Plantarum, 2015, v.154, no. 4, p. 469-484. 0031-9317| Biblioteca(s): INIA Las Brujas. |
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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. In this sense, an accelerated diff... Presentar Todo |
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Thesagro : |
CITRUS; CITRUS PARADISI. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 03223naa a2200265 a 4500
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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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