Photoreceptor activity contributes to contrasting responses to shade in cardamine and arabidopsis seedlings
| Autor: | Sandi Paulišić, Luca Morelli, Huw Jenkins, Miltos Tsiantis, Pedro Pastor-Andreu, Irma Roig-Villanova, Jordi Moreno-Romero, Christiane Then, Xiangchao Gan, Maria José Molina-Contreras, Jaime F. Martínez-García, Asis Hallab, Manuel Rodríguez-Concepción, Aurelio Gómez-Cadenas |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Agroalimentària i Biotecnologia, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Ministerio de Economía y Competitividad (España), Generalitat de Catalunya, Ministerio de Economia y Competitividad (MINECO, FPI program predoctoral fellowship), Agencia d'Ajuts Universitaris i de Recerca (AGAUR-Generalitat de Catalunya, FI program predoctoral fellowship), International CRAG 'Severo Ochoa' postdoctoral program fellowship, MarieCurie postdoctoral contract - European Commission, Max Planck Society Foundation CELLEX |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
0301 basic medicine Cardamine hirsuta Light Photoreceptor activity Enginyeria agroalimentària::Agricultura::Biotecnologia i millora genètica vegetal [Àrees temàtiques de la UPC] Arabidopsis Plant Science Genes Plant 01 natural sciences Hypocotyl Fotoreceptors 03 medical and health sciences Phytochrome A Gene Expression Regulation Plant Phytochrome B Botany Arabidopsis thaliana Shade tolerance Research Articles health care economics and organizations Plant Proteins biology Arabidopsis Proteins fungi social sciences Cell Biology 15. Life on land Plants biology.organism_classification humanities 030104 developmental biology Seedlings Cardamine Phytochrome 010606 plant biology & botany |
| Zdroj: | The Plant Cell Digital.CSIC. Repositorio Institucional del CSIC instname UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Dipòsit Digital de Documents de la UAB Universitat Autònoma de Barcelona Plant Cell |
| Popis: | Plants have evolved two major ways to deal with nearby vegetation or shade: avoidance and tolerance. Moreover, some plants respond to shade in different ways; for example, Arabidopsis (Arabidopsis thaliana) undergoes an avoidance response to shade produced by vegetation, but its close relative Cardamine hirsuta tolerates shade. How plants adopt opposite strategies to respond to the same environmental challenge is unknown. Here, using a genetic strategy, we identified the C. hirsuta slender in shade1 mutants, which produce strongly elongated hypocotyls in response to shade. These mutants lack the phytochrome A (phyA) photoreceptor. Our findings suggest that C. hirsuta has evolved a highly efficient phyA-dependent pathway that suppresses hypocotyl elongation when challenged by shade from nearby vegetation. This suppression relies, at least in part, on stronger phyA activity in C. hirsuta; this is achieved by increased ChPHYA expression and protein accumulation combined with a stronger specific intrinsic repressor activity. We suggest that modulation of photoreceptor activity is a powerful mechanism in nature to achieve physiological variation (shade tolerance versus avoidance) for species to colonize different habitats. EC/H2020/797473 - EC/FP7/237492 - MINECO/BIO2017-85316-R - MINECO/BIO2017-84041-P - AGAUR/2017/SGR-1211 - AGAUR/2017/SGR-710 - MINECO/SEV-2015-0533 |
| Databáze: | OpenAIRE |
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