A cell surface arabinogalactan-peptide influences root hair cell fate

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dc.contributor.authorBorassi, C.
dc.contributor.authorGloazzo Dorosz, J.
dc.contributor.authorRicardi, M.M.
dc.contributor.authorCarignani Sardoy, M.
dc.contributor.authorPol Fachin, L.
dc.contributor.authorMarzol E.
dc.contributor.authorMangano, S.
dc.contributor.authorRodríguez Garcia, D.R.
dc.contributor.authorMartínez Pacheco, J.
dc.contributor.authorRondón Guerrero, Y.D.C.
dc.contributor.authorVelasquez, S.M.
dc.contributor.authorVillavicencio, B.
dc.date.accessioned2021-09-18T00:01:07Z
dc.date.available2021-09-18T00:01:07Z
dc.date.issued2020-08
dc.descriptionIndexación: Scopus.es
dc.description.abstractRoot 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. © 2020 The Authors. New Phytologist © 2020 New Phytologist Trustes
dc.description.urihttps://nph-onlinelibrary-wiley-com.recursosbiblioteca.unab.cl/doi/10.1111/nph.16487
dc.identifier.citationNew Phytologist Open Access Volume 227, Issue 3, Pages 732 - 7431 August 2020es
dc.identifier.doi10.1111/nph.16487
dc.identifier.issn0028-646X
dc.identifier.urihttp://repositorio.unab.cl/xmlui/handle/ria/20295
dc.language.isoenes
dc.publisherBlackwell Publishing Ltdes
dc.subjectArabidopsis thalianaes
dc.subjectarabinogalactan peptide 21es
dc.subjectbrassinosteroidses
dc.subjectO-glycosylationes
dc.subjectroot hair cell fatees
dc.titleA cell surface arabinogalactan-peptide influences root hair cell fatees
dc.typeArtículoes
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