Distinct Hormone Signalling-Modulation Activities Characterize Two Maize Endosperm-Specific Type-A Response Regulators
Authors
Royo Cárcamo, Joaquín; Muñiz Menéndez, Luis Miguel; Gómez Sánchez, Elisa Mercedes; Añazco Guenkova, Ana Macrina; Hueros Soto, GregorioIdentifiers
Permanent link (URI): http://hdl.handle.net/10017/53372DOI: 10.3390/plants11151992
ISSN: 2223-7747
Date
2022-07-30Funders
Ministerio de Economía y Competitividad-MINECO
Agencia Estatal de Investigación-AEI
Bibliographic citation
Royo, J. et al., 2022. Distinct Hormone Signalling-Modulation Activities Characterize Two Maize Endosperm-Specific Type-A Response Regulators. Plants (Basel), 11(15), p.1992
Keywords
Maize endosperm transfer cells
Signal transduction
Response regulator
Project
info:eu-repo/grantAgreement/MINECO//BIO2012-39822/ES/DIVERSAS RUTAS DE TRANSDUCCION DE SEÑALES CONVERGEN EN UN FACTOR TRANSCRIPCIONAL ESENCIAL EN EL LLENADO DEL GRANO DE CEREALES/
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-101803-B-I00/ES/UNA RUTA ATIPICA DE TRANSDUCCION DE SEÑALES EN MAIZ, DE TIPO DOS-COMPONENTES, REVELA UN NUEVO MECANISMO DE INTERCOMUNICACION ENTRE AUXINA Y CITOQUININA/
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/publishedVersion
Rights
Attribution 4.0 International (CC BY 4.0)
© 2022 by the authors. Licensee MDPI
Access rights
info:eu-repo/semantics/openAccess
Abstract
ZmTCRR1 and 2 are type-A response regulators expressed in the maize endosperm transfer cells (TC). While type-B response regulators transcriptionally control canonical type-A response regulators, as part of the cytokinin signal transduction mechanism, the ZmTCRRs are regulated by ZmMRP1, a master regulator of TC identity. In addition, the corresponding proteins are not detected in the TC, accumulating in the inner endosperm cells instead. These features suggest these molecules are not involved in classical, cell-autonomous, cytokinin signalling pathways. Using transgenic Arabidopsis plants ectopically expressing these genes, we have shown that ZmTCRR1 and 2 can modulate auxin and cytokinin signalling, respectively. In Arabidopsis, the ectopic expression of ZmTCRR2 blocked, almost completely, cytokinin perception. Given the conservation of these signalling pathways at the molecular level, our results suggest that the ZmTCRRs modulate cytokinin and auxin perception in the inner endosperm cells.
Files in this item
Files | Size | Format |
|
---|---|---|---|
distinct_royo_plants_2022.pdf | 2.081Mb |
|
Files | Size | Format |
|
---|---|---|---|
distinct_royo_plants_2022.pdf | 2.081Mb |
|
Collections
- FISIOLOG - Artículos [87]