Reversion of fruit-dependent inhibition of flowering in Citrusrequires sprouting of buds with epigenetically silenced CcMADS19
In Citrus, the response to environmental floral inductive signals is inhibited by the presence of developing fruits. The mechanism involves epigenetic activation of the CcMADS19 locus (FLC orthologue), encoding a floral repressor. To understand how this epigenetic regulation is reverted to allow flo...
| Autores principales: | , , , , , , , , |
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| Formato: | article |
| Lenguaje: | Inglés |
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Wiley Online Library
2021
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.11939/7659 https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.17681 |
| _version_ | 1855032646748340224 |
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| author | Mesejo, Carlos Marzal, Andrés Martínez-Fuentes, Amparo Reig, Carmina De-Lucas, Miguel Iglesias, Domingo J. Primo-Millo, Eduardo Blazquez, Miguel A. Agustí, Manuel |
| author_browse | Agustí, Manuel Blazquez, Miguel A. De-Lucas, Miguel Iglesias, Domingo J. Martínez-Fuentes, Amparo Marzal, Andrés Mesejo, Carlos Primo-Millo, Eduardo Reig, Carmina |
| author_facet | Mesejo, Carlos Marzal, Andrés Martínez-Fuentes, Amparo Reig, Carmina De-Lucas, Miguel Iglesias, Domingo J. Primo-Millo, Eduardo Blazquez, Miguel A. Agustí, Manuel |
| author_sort | Mesejo, Carlos |
| collection | ReDivia |
| description | In Citrus, the response to environmental floral inductive signals is inhibited by the presence of developing fruits. The mechanism involves epigenetic activation of the CcMADS19 locus (FLC orthologue), encoding a floral repressor. To understand how this epigenetic regulation is reverted to allow flowering in the following season, we have forced precocious sprouting of axillary buds in fruit-bearing shoots, and examined the competence to floral inductive signals of old and new leaves derived from them. We have found that CcMADS19 is enriched in repressive H3K27me3 marks in young, but not old leaves, revealing that axillary buds retain a silenced version of the floral repressor that is mitotically transmitted to the newly emerging leaves, which are able to induce flowering. Therefore, we propose that flowering in Citrus is necessarily preceded by vegetative sprouting, so that the competence to respond to floral inductive signals is reset in the new leaves. |
| format | article |
| id | ReDivia7659 |
| institution | Instituto Valenciano de Investigaciones Agrarias (IVIA) |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | Wiley Online Library |
| publisherStr | Wiley Online Library |
| record_format | dspace |
| spelling | ReDivia76592025-04-25T14:48:27Z Reversion of fruit-dependent inhibition of flowering in Citrusrequires sprouting of buds with epigenetically silenced CcMADS19 Mesejo, Carlos Marzal, Andrés Martínez-Fuentes, Amparo Reig, Carmina De-Lucas, Miguel Iglesias, Domingo J. Primo-Millo, Eduardo Blazquez, Miguel A. Agustí, Manuel Alternate bearing Chromatin remodelling FLC (Flowering locus C) FT (Flowering locus T) F62 Plant physiology - Growth and development F63 Plant physiology - Reproduction Citrus Flowering In Citrus, the response to environmental floral inductive signals is inhibited by the presence of developing fruits. The mechanism involves epigenetic activation of the CcMADS19 locus (FLC orthologue), encoding a floral repressor. To understand how this epigenetic regulation is reverted to allow flowering in the following season, we have forced precocious sprouting of axillary buds in fruit-bearing shoots, and examined the competence to floral inductive signals of old and new leaves derived from them. We have found that CcMADS19 is enriched in repressive H3K27me3 marks in young, but not old leaves, revealing that axillary buds retain a silenced version of the floral repressor that is mitotically transmitted to the newly emerging leaves, which are able to induce flowering. Therefore, we propose that flowering in Citrus is necessarily preceded by vegetative sprouting, so that the competence to respond to floral inductive signals is reset in the new leaves. 2021-10-13T10:51:05Z 2021-10-13T10:51:05Z 2021 article publishedVersion Mesejo, C., Marzal, A., Martínez‐Fuentes, A., Reig, C., de-Lucas, M., Iglesias, D. J. et al. (2021). Reversion of fruit‐dependent inhibition of flowering in Citrus requires sprouting of buds with epigenetically silenced CcMADS19. New Phytologist, 2021, 17681. 1469-8137 0028-646X (e-ISSN) http://hdl.handle.net/20.500.11939/7659 10.1111/nph.17681 https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.17681 en info:eu-repo/grantAgreement/GVA/PROMETEO 2019/021 info:eu-repo/grantAgreement/MICINN//RTI2018-101303-B-100 The work described in this paper was partially supported by grants PROMETEO/2019/021 Generalitat valenciana (MAB). Financial supported also by the Spanish Ministerio de Ciencia, Innovación y Universidades through grant nº RTI2018-101303-B-100 (CM). Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ openAccess Wiley Online Library electronico |
| spellingShingle | Alternate bearing Chromatin remodelling FLC (Flowering locus C) FT (Flowering locus T) F62 Plant physiology - Growth and development F63 Plant physiology - Reproduction Citrus Flowering Mesejo, Carlos Marzal, Andrés Martínez-Fuentes, Amparo Reig, Carmina De-Lucas, Miguel Iglesias, Domingo J. Primo-Millo, Eduardo Blazquez, Miguel A. Agustí, Manuel Reversion of fruit-dependent inhibition of flowering in Citrusrequires sprouting of buds with epigenetically silenced CcMADS19 |
| title | Reversion of fruit-dependent inhibition of flowering in Citrusrequires sprouting of buds with epigenetically silenced CcMADS19 |
| title_full | Reversion of fruit-dependent inhibition of flowering in Citrusrequires sprouting of buds with epigenetically silenced CcMADS19 |
| title_fullStr | Reversion of fruit-dependent inhibition of flowering in Citrusrequires sprouting of buds with epigenetically silenced CcMADS19 |
| title_full_unstemmed | Reversion of fruit-dependent inhibition of flowering in Citrusrequires sprouting of buds with epigenetically silenced CcMADS19 |
| title_short | Reversion of fruit-dependent inhibition of flowering in Citrusrequires sprouting of buds with epigenetically silenced CcMADS19 |
| title_sort | reversion of fruit dependent inhibition of flowering in citrusrequires sprouting of buds with epigenetically silenced ccmads19 |
| topic | Alternate bearing Chromatin remodelling FLC (Flowering locus C) FT (Flowering locus T) F62 Plant physiology - Growth and development F63 Plant physiology - Reproduction Citrus Flowering |
| url | http://hdl.handle.net/20.500.11939/7659 https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.17681 |
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