Biosynthesis and Contents of Gibberellins in Seeded and Seedless Sweet Orange (Citrus sinensis L. Osbeck) Cultivars
In this work, we study the capacity to biosynthesize gibberellins (GA) of ovules (either fertilised or unfertilised), developing seeds and pericarp from fruitlets and their relation with fruit set capacity. Experiments were performed in adult, 12-year-old trees of seeded (Pineapple) and seedless par...
| Autores principales: | , , , , , , , , |
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| Formato: | article |
| Lenguaje: | Inglés |
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Springer
2020
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.11939/6916 https://link.springer.com/article/10.1007/s00344-016-9602-5 |
| _version_ | 1855032513626374144 |
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| author | Bermejo, Almudena Martínez-Alcántara, Belén Martínez-Cuenca, Mary-Rus Yuste, Roberto Mesejo, Carlos Reig, Carmina Agustí, Manuel Primo-Millo, Eduardo Iglesias, Domingo J. |
| author_browse | Agustí, Manuel Bermejo, Almudena Iglesias, Domingo J. Martínez-Alcántara, Belén Martínez-Cuenca, Mary-Rus Mesejo, Carlos Primo-Millo, Eduardo Reig, Carmina Yuste, Roberto |
| author_facet | Bermejo, Almudena Martínez-Alcántara, Belén Martínez-Cuenca, Mary-Rus Yuste, Roberto Mesejo, Carlos Reig, Carmina Agustí, Manuel Primo-Millo, Eduardo Iglesias, Domingo J. |
| author_sort | Bermejo, Almudena |
| collection | ReDivia |
| description | In this work, we study the capacity to biosynthesize gibberellins (GA) of ovules (either fertilised or unfertilised), developing seeds and pericarp from fruitlets and their relation with fruit set capacity. Experiments were performed in adult, 12-year-old trees of seeded (Pineapple) and seedless parthenocarpic (Washington navel) sweet orange [Citrus sinensis L. Osbeck] cultivars. The activity of GA20-, GA3- and GA2-oxidases and gibberellin levels were measured in the ovules and pericarp of fruitlets in different development states. The results indicate that ovules are the main sites of gibberellin synthesis in fruitlets during the post-anthesis period. The most intense GA1 synthesis—coincident with the highest expression of GA20ox2, GA3ox1 and GA2ox1—was detected in the ovules of the seeded cultivar, probably induced by fecundation and associated with low early fruitlet abscission rates. By contrast, the low activity detected in the sterile cultivar appears to be rather developmentally or constitutively regulated. As a fruitlet develops, the GA1 concentration is augmented in the pericarp in comparison to ovules or developing seeds, and levels therein did not exhibit noticeable differences between varieties. Furthermore, developing seeds from pineapple had higher GA1 content than the unfertilised abortive ovules from Washington navel. Taken together, data suggest a main role for this hormone in the control of fruitlet abscission, and also demonstrate a function in seed development. |
| format | article |
| id | ReDivia6916 |
| institution | Instituto Valenciano de Investigaciones Agrarias (IVIA) |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | ReDivia69162025-04-25T14:47:56Z Biosynthesis and Contents of Gibberellins in Seeded and Seedless Sweet Orange (Citrus sinensis L. Osbeck) Cultivars Bermejo, Almudena Martínez-Alcántara, Belén Martínez-Cuenca, Mary-Rus Yuste, Roberto Mesejo, Carlos Reig, Carmina Agustí, Manuel Primo-Millo, Eduardo Iglesias, Domingo J. GA-oxidases Washington Navel F30 Plant genetics and breeding F60 Plant physiology and biochemistry Citrus sinensis Gibberellins Pineapples Seeds In this work, we study the capacity to biosynthesize gibberellins (GA) of ovules (either fertilised or unfertilised), developing seeds and pericarp from fruitlets and their relation with fruit set capacity. Experiments were performed in adult, 12-year-old trees of seeded (Pineapple) and seedless parthenocarpic (Washington navel) sweet orange [Citrus sinensis L. Osbeck] cultivars. The activity of GA20-, GA3- and GA2-oxidases and gibberellin levels were measured in the ovules and pericarp of fruitlets in different development states. The results indicate that ovules are the main sites of gibberellin synthesis in fruitlets during the post-anthesis period. The most intense GA1 synthesis—coincident with the highest expression of GA20ox2, GA3ox1 and GA2ox1—was detected in the ovules of the seeded cultivar, probably induced by fecundation and associated with low early fruitlet abscission rates. By contrast, the low activity detected in the sterile cultivar appears to be rather developmentally or constitutively regulated. As a fruitlet develops, the GA1 concentration is augmented in the pericarp in comparison to ovules or developing seeds, and levels therein did not exhibit noticeable differences between varieties. Furthermore, developing seeds from pineapple had higher GA1 content than the unfertilised abortive ovules from Washington navel. Taken together, data suggest a main role for this hormone in the control of fruitlet abscission, and also demonstrate a function in seed development. 2020-12-23T11:57:33Z 2020-12-23T11:57:33Z 2016 article publishedVersion Bermejo, A., Martínez-Alcántara, B., Martínez-Cuenca, M. R., Yuste, R., Mesejo, C., Reig, C., ... & Iglesias, D. J. (2016). Biosynthesis and Contents of Gibberellins in Seeded and Seedless Sweet Orange (Citrus sinensis L. Osbeck) Cultivars. Journal of plant growth regulation, 35(4), 1036-1048. 0721-7595 (Print ISSN) 1435-8107 (Electronic ISSN) http://hdl.handle.net/20.500.11939/6916 10.1007/s00344-016-9602-5 https://link.springer.com/article/10.1007/s00344-016-9602-5 en Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ closedAccess Springer electronico |
| spellingShingle | GA-oxidases Washington Navel F30 Plant genetics and breeding F60 Plant physiology and biochemistry Citrus sinensis Gibberellins Pineapples Seeds Bermejo, Almudena Martínez-Alcántara, Belén Martínez-Cuenca, Mary-Rus Yuste, Roberto Mesejo, Carlos Reig, Carmina Agustí, Manuel Primo-Millo, Eduardo Iglesias, Domingo J. Biosynthesis and Contents of Gibberellins in Seeded and Seedless Sweet Orange (Citrus sinensis L. Osbeck) Cultivars |
| title | Biosynthesis and Contents of Gibberellins in Seeded and Seedless Sweet Orange (Citrus sinensis L. Osbeck) Cultivars |
| title_full | Biosynthesis and Contents of Gibberellins in Seeded and Seedless Sweet Orange (Citrus sinensis L. Osbeck) Cultivars |
| title_fullStr | Biosynthesis and Contents of Gibberellins in Seeded and Seedless Sweet Orange (Citrus sinensis L. Osbeck) Cultivars |
| title_full_unstemmed | Biosynthesis and Contents of Gibberellins in Seeded and Seedless Sweet Orange (Citrus sinensis L. Osbeck) Cultivars |
| title_short | Biosynthesis and Contents of Gibberellins in Seeded and Seedless Sweet Orange (Citrus sinensis L. Osbeck) Cultivars |
| title_sort | biosynthesis and contents of gibberellins in seeded and seedless sweet orange citrus sinensis l osbeck cultivars |
| topic | GA-oxidases Washington Navel F30 Plant genetics and breeding F60 Plant physiology and biochemistry Citrus sinensis Gibberellins Pineapples Seeds |
| url | http://hdl.handle.net/20.500.11939/6916 https://link.springer.com/article/10.1007/s00344-016-9602-5 |
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