Artículo
Identification of WRKY transcription factors associated with leaf and corolla senescence in Petunia hybrida
Astigueta, Francisco Horacio
; Baigorria, Amilcar H.; Garcia, Martín Nahuel
; Delfosse, Verónica Cecilia
; González, Sergio Alejandro
; Perez de la Torre, Mariana Cecilia; Moschen, Sebastián Nicolás
; Lia, Verónica Viviana
; Heinz, Ruth Amelia
; Fernandez, Paula del Carmen
; Trupkin, Santiago Ariel
Fecha de publicación:
06/2021
Editorial:
Research Square Company
Revista:
Research Square
ISSN:
2693-5015
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Several families of transcription factors (TFs) control the progression of senescence. Many key TFs belonging to the WRKY family have been described to play crucial roles in the regulation of leaf senescence, mainly in Arabidopsis. However, little is known about senescence-associated WRKY members in floricultural species. Delay of senescence in leaves and petals of Petunia hybrida, a worldwide ornamental crop are highly appreciated traits. In this work, starting from 28 differentially expressed WRKY genes of Arabidopsis during the progression of leaf senescence, we identified the orthologous in P. hybrida and explored the expression profiles of 20 PhWRKY genes during the progression of natural (age-related) leaf and corolla senescence as well as in the corollas of flowers undergoing pollination-induced senescence. Simultaneous visualization showed consistent and similar expression profiles of PhWRKYs during natural leaf and corolla senescence, although weak expression changes were observed during pollination-induced senescence. Comparable expression trends between PhWRKYs and the corresponding genes of Arabidopsis were observed during leaf senescence, although more divergences were found in petals of pollinated petunia flowers. Integration of expression data with phylogenetics, conserved motif and cis-regulatory element analyses were used to establish a list of solid candidates that could regulate more than one senescence process. Our results suggest that several members of the WRKY family of TFs are tightly linked to the regulation of senescence in P. hybrida.
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Articulos (IABIMO)
Articulos de INSTITUTO DE AGROBIOTECNOLOGIA Y BIOLOGIA MOLECULAR
Articulos de INSTITUTO DE AGROBIOTECNOLOGIA Y BIOLOGIA MOLECULAR
Citación
Astigueta, Francisco Horacio; Baigorria, Amilcar H.; Garcia, Martín Nahuel; Delfosse, Verónica Cecilia; González, Sergio Alejandro; et al.; Identification of WRKY transcription factors associated with leaf and corolla senescence in Petunia hybrida; Research Square Company; Research Square; 6-2021; 1-29
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