A cell surface arabinogalactan ‐ peptide influences root hair cell fate

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Root hairs (RHs) develop from specialized epidermal trichoblast cells, whereas epidermal cells that lack RHs are known as atrichoblasts. The mechanism controlling RH cell fate is only partially understood. RH cell fate is regulated by a transcription factor complex that promotes the expression of th...

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Detalles Bibliográficos
Otros Autores: Borassi, Cecilia, Gloazzo Dorosz, Javier, Ricardi, Martiniano María, Carignani Sardoy, Mariana, Pol Fachin, Laercio, Marzol, Eliana, Mangano, Silvina, Ciancia, Marina
Formato: Artículo
Lenguaje:Inglés
Materias:
ARABIDOPSIS THALIANA
ARABINOGALACTAN PEPTIDE 21
BRASSINOSTEROIDS
O ‐ GLYCOSYLATION
ROOT HAIR CELL FATE
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2020borassi.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central (FAUBA) de Universidad de Buenos Aires
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245 1 0 |a A cell surface arabinogalactan ‐ peptide influences root hair cell fate 
520 |a Root hairs (RHs) develop from specialized epidermal trichoblast cells, whereas epidermal cells that lack RHs are known as atrichoblasts. The mechanism controlling RH cell fate is only partially understood. RH cell fate is regulated by a transcription factor complex that promotes the expression of the homeodomain protein GLABRA 2 (GL2), which blocks RH development by inhibiting ROOT HAIR DEFECTIVE 6 (RHD6). Suppression of GL2 expression activates RHD6, a series of downstream TFs including ROOT HAIR DEFECTIVE 6 LIKE‐4 (RSL4) and their target genes, and causes epidermal cells to develop into RHs. Brassinosteroids (BRs) influence RH cell fate. In the absence of BRs, phosphorylated BIN2 (a Type‐II GSK3‐like kinase) inhibits a protein complex that regulates GL2 expression. Perturbation of the arabinogalactan peptide (AGP21) in Arabidopsis thaliana triggers aberrant RH development, similar to that observed in plants with defective BR signaling. We reveal that an O‐glycosylated AGP21 peptide, which is positively regulated by BZR1, a transcription factor activated by BR signaling, affects RH cell fate by altering GL2 expression in a BIN2‐dependent manner. Changes in cell surface AGP disrupts BR responses and inhibits the downstream effect of BIN2 on the RH repressor GL2 in root epidermis. 
650 |2 Agrovoc  |9 26 
653 |a ARABIDOPSIS THALIANA 
653 |a ARABINOGALACTAN PEPTIDE 21 
653 |a BRASSINOSTEROIDS 
653 |a O ‐ GLYCOSYLATION 
653 |a ROOT HAIR CELL FATE 
700 1 |a Borassi, Cecilia  |u CONICET. Fundación Instituto Leloir (IIBBA) . Buenos Aires, Argentina.  |9 71824 
700 1 |a Gloazzo Dorosz, Javier  |u CONICET. Fundación Instituto Leloir (IIBBA) . Buenos Aires, Argentina.  |9 69900 
700 1 |a Ricardi, Martiniano María  |u Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Fisiologıa y Biologıa Molecular y Celular (FBMC). Instituto de Fisiología, Biología Molecular y Neurociencias (IFIByNE). Buenos Aires, Argentina.  |u CONICET - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Fisiologıa y Biologıa Molecular y Celular (FBMC). Instituto de Fisiología, Biología Molecular y Neurociencias (IFIByNE). Buenos Aires, Argentina.  |9 67546 
700 1 |a Carignani Sardoy, Mariana  |u CONICET. Fundación Instituto Leloir (IIBBA) . Buenos Aires, Argentina.  |9 71827 
700 1 |a Pol Fachin, Laercio  |u Centro Universitário. CESMAC. Maceio, Brazil.  |9 69902 
700 1 |a Marzol, Eliana  |u CONICET. Fundación Instituto Leloir (IIBBA) . Buenos Aires, Argentina.  |9 71829 
700 1 |a Mangano, Silvina  |u CONICET. Fundación Instituto Leloir (IIBBA) . Buenos Aires, Argentina.  |9 71830 
700 1 |9 46099  |a Ciancia, Marina  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Biología Aplicada y Alimentos. Cátedra de Química de Biomoléculas. Buenos Aires, Argentina.  |u Universidad de Buenos Aires. Centro de Investigación de Hidratos de Carbono (CIHIDECAR). Buenos Aires, Argentina.  |u CONICET - Universidad de Buenos Aires. Centro de Investigación de Hidratos de Carbono (CIHIDECAR). Buenos Aires, Argentina. 
773 0 |t New phytologist  |w (AR-BaUFA)SECS001166  |g vol.227, no.3 (2020), p.732–743, grafs., fot. 
856 |f 2020borassi  |i en reservorio  |q application/pdf  |u http://ri.agro.uba.ar/files/intranet/articulo/2020borassi.pdf  |x ARTI202003 
856 |u https://www.wiley.com/  |z LINK AL EDITOR 
942 |c ARTICULO 
942 |c ENLINEA 
976 |a AAG 

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