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...
Guardado en:
| Autores principales: | , , , , , , |
|---|---|
| Formato: | JOUR |
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_01407791_v37_n9_p2014_Arana |
| Aporte de: |
| id |
todo:paper_01407791_v37_n9_p2014_Arana |
|---|---|
| record_format |
dspace |
| spelling |
todo:paper_01407791_v37_n9_p2014_Arana2023-10-03T14:58:29Z Functional diversity of phytochrome family in the control of light and gibberellin-mediated germination in Arabidopsis Arana, M.V. Sánchez-Lamas, M. Strasser, B. Ibarra, S.E. Cerdán, P.D. Botto, J.F. Sánchez, R.A. Duplicated genes Hormones Light quality Arabidopsis gibberellin phytochrome Arabidopsis biological model drug effects genetics germination growth, development and aging light metabolism multigene family mutation plant seed radiation response Arabidopsis Germination Gibberellins Light Models, Biological Multigene Family Mutation Phytochrome Seeds 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. © 2014 John Wiley & Sons Ltd. Fil:Cerdán, P.D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Botto, J.F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01407791_v37_n9_p2014_Arana |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Duplicated genes Hormones Light quality Arabidopsis gibberellin phytochrome Arabidopsis biological model drug effects genetics germination growth, development and aging light metabolism multigene family mutation plant seed radiation response Arabidopsis Germination Gibberellins Light Models, Biological Multigene Family Mutation Phytochrome Seeds |
| spellingShingle |
Duplicated genes Hormones Light quality Arabidopsis gibberellin phytochrome Arabidopsis biological model drug effects genetics germination growth, development and aging light metabolism multigene family mutation plant seed radiation response Arabidopsis Germination Gibberellins Light Models, Biological Multigene Family Mutation Phytochrome Seeds Arana, M.V. Sánchez-Lamas, M. Strasser, B. Ibarra, S.E. Cerdán, P.D. Botto, J.F. Sánchez, R.A. Functional diversity of phytochrome family in the control of light and gibberellin-mediated germination in Arabidopsis |
| topic_facet |
Duplicated genes Hormones Light quality Arabidopsis gibberellin phytochrome Arabidopsis biological model drug effects genetics germination growth, development and aging light metabolism multigene family mutation plant seed radiation response Arabidopsis Germination Gibberellins Light Models, Biological Multigene Family Mutation Phytochrome Seeds |
| 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. © 2014 John Wiley & Sons Ltd. |
| format |
JOUR |
| author |
Arana, M.V. Sánchez-Lamas, M. Strasser, B. Ibarra, S.E. Cerdán, P.D. Botto, J.F. Sánchez, R.A. |
| author_facet |
Arana, M.V. Sánchez-Lamas, M. Strasser, B. Ibarra, S.E. Cerdán, P.D. Botto, J.F. Sánchez, R.A. |
| author_sort |
Arana, M.V. |
| title |
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_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_sort |
functional diversity of phytochrome family in the control of light and gibberellin-mediated germination in arabidopsis |
| url |
http://hdl.handle.net/20.500.12110/paper_01407791_v37_n9_p2014_Arana |
| work_keys_str_mv |
AT aranamv functionaldiversityofphytochromefamilyinthecontroloflightandgibberellinmediatedgerminationinarabidopsis AT sanchezlamasm functionaldiversityofphytochromefamilyinthecontroloflightandgibberellinmediatedgerminationinarabidopsis AT strasserb functionaldiversityofphytochromefamilyinthecontroloflightandgibberellinmediatedgerminationinarabidopsis AT ibarrase functionaldiversityofphytochromefamilyinthecontroloflightandgibberellinmediatedgerminationinarabidopsis AT cerdanpd functionaldiversityofphytochromefamilyinthecontroloflightandgibberellinmediatedgerminationinarabidopsis AT bottojf functionaldiversityofphytochromefamilyinthecontroloflightandgibberellinmediatedgerminationinarabidopsis AT sanchezra functionaldiversityofphytochromefamilyinthecontroloflightandgibberellinmediatedgerminationinarabidopsis |
| _version_ |
1782024209365467136 |