Functional diversity of phytochrome family in the control of light and gibberellin-mediated germination in Arabidopsis
In several species, seed germination is regulated by light in a way that restricts seedling emergence to the environmental conditions that are likely to be favourable for the success of the new individual, and therefore, this behaviour is recognized to have adaptive value. The phytochromes are one o...
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
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Wiley
2020
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| Online Access: | http://hdl.handle.net/20.500.12123/7663 https://onlinelibrary.wiley.com/doi/full/10.1111/pce.12286 https://doi.org/10.1111/pce.12286 |
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| author | Arana, María Veronica Sanchez Lamas, Maximiliano Strasser, B. Ibarra, Silvia E. Cerdan, Pablo Diego Botto, Juan Francisco Sanchez, Rodolfo Augusto |
| author_browse | Arana, María Veronica Botto, Juan Francisco Cerdan, Pablo Diego Ibarra, Silvia E. Sanchez Lamas, Maximiliano Sanchez, Rodolfo Augusto Strasser, B. |
| author_facet | Arana, María Veronica Sanchez Lamas, Maximiliano Strasser, B. Ibarra, Silvia E. Cerdan, Pablo Diego Botto, Juan Francisco Sanchez, Rodolfo Augusto |
| author_sort | Arana, María Veronica |
| collection | INTA Digital |
| description | In several species, seed germination is regulated by light in a way that restricts seedling emergence to the environmental conditions that are likely to be favourable for the success of the new individual, and therefore, this behaviour is recognized to have adaptive value. The phytochromes are one of the most relevant photoreceptors involved in light perception by plants. We explored the redundancy and diversity functions of the phytochrome family in the control of seed responsiveness to light and gibberellins (GA) by using a set of phytochrome mutants of Arabidopsis. Our data show that, in addition to the well-known role of phyB in the promotion of germination in response to high red to far-red ratios (R/FR), phyE and phyD stimulate germination at very low R/FR ratios, probably by promoting the action of phyA. Further, we show that phyC regulates negatively the seed responsiveness to light, unravelling unexpected functions for phyC in seed germination. Finally, we find that seed responsiveness to GA is mainly controlled by phyB, with phyC, phyD and phyE having relevant roles when acting in a phyB-deficient background. Our results indicate that phytochromes have multiple and complex roles during germination depending on the active photoreceptor background. |
| format | info:ar-repo/semantics/artículo |
| id | INTA7663 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | INTA76632020-08-03T19:01:07Z Functional diversity of phytochrome family in the control of light and gibberellin-mediated germination in Arabidopsis Arana, María Veronica Sanchez Lamas, Maximiliano Strasser, B. Ibarra, Silvia E. Cerdan, Pablo Diego Botto, Juan Francisco Sanchez, Rodolfo Augusto Semilla Fitocroma Arabidopsis Germinación de las Semillas Seed Phytochrome Seed Germination In several species, seed germination is regulated by light in a way that restricts seedling emergence to the environmental conditions that are likely to be favourable for the success of the new individual, and therefore, this behaviour is recognized to have adaptive value. The phytochromes are one of the most relevant photoreceptors involved in light perception by plants. We explored the redundancy and diversity functions of the phytochrome family in the control of seed responsiveness to light and gibberellins (GA) by using a set of phytochrome mutants of Arabidopsis. Our data show that, in addition to the well-known role of phyB in the promotion of germination in response to high red to far-red ratios (R/FR), phyE and phyD stimulate germination at very low R/FR ratios, probably by promoting the action of phyA. Further, we show that phyC regulates negatively the seed responsiveness to light, unravelling unexpected functions for phyC in seed germination. Finally, we find that seed responsiveness to GA is mainly controlled by phyB, with phyC, phyD and phyE having relevant roles when acting in a phyB-deficient background. Our results indicate that phytochromes have multiple and complex roles during germination depending on the active photoreceptor background. Estación Experimental Agropecuaria Bariloche Fil: Arana, María Veronica. Intituto Nacional de Tecnologia Agropecuaria (INTA). Estacion Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Sanchez Lamas, Maximiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Fundacion Leloir; Argentina Fil: Strasser, B. Consejo Nacional de Investigaciones Científicas y Técnicas. Fundacion Leloir; Argentina Fil: Ibarra, Silvia E. Universidad Nacional de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Cerdan, Pablo Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Fundacion Leloir; Argentina Fil: Botto, Juan Francisco. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Sanchez, Rodolfo Augusto. Universidad Nacional de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina 2020-08-03T18:54:49Z 2020-08-03T18:54:49Z 2014-03 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/7663 https://onlinelibrary.wiley.com/doi/full/10.1111/pce.12286 1365-3040 https://doi.org/10.1111/pce.12286 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Wiley Plant, Cell & Environment 37 (9) : 2014-2023 (Septiembre 2014) |
| spellingShingle | Semilla Fitocroma Arabidopsis Germinación de las Semillas Seed Phytochrome Seed Germination Arana, María Veronica Sanchez Lamas, Maximiliano Strasser, B. Ibarra, Silvia E. Cerdan, Pablo Diego Botto, Juan Francisco Sanchez, Rodolfo Augusto Functional diversity of phytochrome family in the control of light and gibberellin-mediated germination in Arabidopsis |
| title | Functional diversity of phytochrome family in the control of light and gibberellin-mediated germination in Arabidopsis |
| title_full | Functional diversity of phytochrome family in the control of light and gibberellin-mediated germination in Arabidopsis |
| title_fullStr | Functional diversity of phytochrome family in the control of light and gibberellin-mediated germination in Arabidopsis |
| title_full_unstemmed | Functional diversity of phytochrome family in the control of light and gibberellin-mediated germination in Arabidopsis |
| title_short | Functional diversity of phytochrome family in the control of light and gibberellin-mediated germination in Arabidopsis |
| title_sort | functional diversity of phytochrome family in the control of light and gibberellin mediated germination in arabidopsis |
| topic | Semilla Fitocroma Arabidopsis Germinación de las Semillas Seed Phytochrome Seed Germination |
| url | http://hdl.handle.net/20.500.12123/7663 https://onlinelibrary.wiley.com/doi/full/10.1111/pce.12286 https://doi.org/10.1111/pce.12286 |
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