title: AtMKK6 and AtMPK13 are required for lateral root formation in Arabidopsis.
abstract: The mitogen-activated protein (MAP) kinase cascades are important signaling components that mediate various biological pathwaysin all eukaryotic cells. In our recent publication,1 we identified AtMPK4 as one of the downstream targets of AtMKK6 that is required for executing male-specific meiotic cytokinesis. Here we provide evidence that another target, AtMPK13, is developmentally co-expressed with AtMKK6 in Arabidopsis, and both AtMPK13 and AtMKK6 display high Promoter::GUS activity in the primary root tips and at the lateral root primordia. Partial suppression of either AtMKK6 or AtMPK13 expression significantly reduces the number of lateral roots in the transgenic lines, suggesting that the AtMKK6-AtMPK13 module positively regulates lateral root formation.
authors: Michael Smith Laboratories, University of British Columbia, Vancouver, BC Canada.
authors: Qingning
authors: Q
authors: Zeng
authors: Somrudee
authors: S
authors: Sritubtim
authors: Brian E
authors: BE
authors: Ellis
mesh_terms: D000483:Alleles; D017360:Arabidopsis / Q000201:enzymology* / Q000235:genetics / Q000254:growth & development*; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism*; D018507:Gene Expression Regulation, Developmental; D018506:Gene Expression Regulation, Plant; D055785:Gene Knockdown Techniques; D048669:MAP Kinase Kinase 6 / Q000235:genetics / Q000378:metabolism*; D048292:Mitogen-Activated Protein Kinase 13 / Q000235:genetics / Q000378:metabolism*; D010641:Phenotype; D018517:Plant Roots / Q000201:enzymology* / Q000254:growth & development*; D034622:RNA Interference
chemical_list: D029681:Arabidopsis Proteins; D048292:Mitogen-Activated Protein Kinase 13; D048669:MAP Kinase Kinase 6