A Common Pathway of Root Growth Control and Response to CLE Peptides Through Two Receptor Kinases in Arabidopsis.
Cell-cell communication is essential for plants to integrate developmental programs with external cues that affect their growth. Recent advances in plant signaling have uncovered similar molecular mechanisms in shoot, root, and vascular meristem signaling that involve receptor-like kinases and small...
| Publicado en: | Genetics Vol. 208; no. 2; pp. 687 - 705 |
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| Autores principales: | , , , , , , , |
| Formato: | Journal Article |
| Publicado: |
Oxford University Press / USA
Feb2018
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=135448976&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 135448976 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00166731 GNT jtl: Genetics issn: 00166731 maglogo: N pubinfo: dt: Feb2018 vid: 208 iid: 2 pid: 622 pub: Oxford University Press / USA artinfo: ui: 135448976 10.1534/genetics.117.300148 135448976 ppf: 687 ppct: 18 formats: tig: atl: A Common Pathway of Root Growth Control and Response to CLE Peptides Through Two Receptor Kinases in Arabidopsis. aug: au: Racolta, Adriana Nodine, Michael D. Davies, Kelli Lee, Cameron Rowe, Scott Velazco, Yulemi Wellington, Rachel Tax, Frans E. affil: University of Arizona, Tucson, Arizona 85721 sug: subj: Receptors, Cell Surface Physiology Cell Proliferation Peptides Growth Plant Roots Physiology Plant Components Cell Division Cell Differentiation Genotype Cell Communication Plants Phosphotransferases ab: Cell-cell communication is essential for plants to integrate developmental programs with external cues that affect their growth. Recent advances in plant signaling have uncovered similar molecular mechanisms in shoot, root, and vascular meristem signaling that involve receptor-like kinases and small, secreted peptides. Here, we report that the receptor-like kinases TOAD2/ RPK2 and RPK1 regulate root growth by controlling cell proliferation and affecting meristem size. Two types of developmental alterations were observed upon exogenous CLE peptide application. The first type was detected in all plants treated, and comprise increased proliferative activity of cells in the stem cell niche and a delay of progression in differentiation of daughter cells. The second type was changes specific to the genotypes that are sensitive to CLE-driven root meristem inhibition and include a large decrease in the occurrence of cell divisions in longitudinal files, correlating with shorter meristems and cessation of root growth. The root meristems of toad2/rpk2 mutant plants are insensitive to the inhibitory effect of CLE17 peptide treatment, consistent with TOAD2/RPK2 function as a receptor for CLE peptides. In addition, a strong reduction in the expression of RPK1 protein upon CLE treatment, dependent on TOAD2/RPK2, suggests that these two RLKs mediate CLE signaling in a common pathway to control root growth. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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