| | This journal provides immediate access to some articles. In This Issue Good Things Come in Threes: A Trio of Triple Kinases Essential for Cell Division in Arabidopsis Nancy A. Eckardt PMCID: PMC543396 Research Articles CLV3 Is Localized to the Extracellular Space, Where It Activates the Arabidopsis CLAVATA Stem Cell Signaling Pathway Enrique Rojo, Vijay K. Sharma, Valentina Kovaleva, Natasha V. Raikhel, and Jennifer C. Fletcher PMCID: PMC150600 Arabidopsis RAR1 Exerts Rate-Limiting Control of R Gene–Mediated Defenses against Multiple Pathogens Paul R. Muskett, Katherine Kahn, Mark J. Austin, Lisa J. Moisan, Ari Sadanandom, Ken Shirasu, Jonathan D. G. Jones, and Jane E. Parker PMCID: PMC150601 Arabidopsis SGT1b Is Required for Defense Signaling Conferred by Several Downy Mildew Resistance Genes Mahmut Tör, Pam Gordon, Alayne Cuzick, Thomas Eulgem, Evaggelia Sinapidou, Figen Mert-Türk, Canan Can, Jeffery L. Dangl, and Eric B. Holub PMCID: PMC150602 RAR1 and NDR1 Contribute Quantitatively to Disease Resistance in Arabidopsis, and Their Relative Contributions Are Dependent on the R Gene Assayed Pablo Tornero, Peter Merritt, Ari Sadanandom, Ken Shirasu, Roger W. Innes, and Jeffery L. Dangl PMCID: PMC150603 hydra Mutants of Arabidopsis Are Defective in Sterol Profiles and Auxin and Ethylene Signaling Martin Souter, Jennifer Topping, Margaret Pullen, Jiri Friml, Klaus Palme, Rachel Hackett, Don Grierson, and Keith Lindsey PMCID: PMC150604 Structural Basis for Broad Substrate Specificity in Higher Plant β-d-Glucan Glucohydrolases Maria Hrmova, Ross De Gori, Brian J. Smith, Jon K. Fairweather, Hugues Driguez, Joseph N. Varghese, and Geoffrey B. Fincher PMCID: PMC150605 Centromeric Localization and Adaptive Evolution of an Arabidopsis Histone H3 Variant Paul B. Talbert, Ricardo Masuelli, Anand P. Tyagi, Luca Comai, and Steven Henikoff PMCID: PMC150606 Photoexcited Structure of a Plant Photoreceptor Domain Reveals a Light-Driven Molecular Switch Sean Crosson and Keith Moffat PMCID: PMC150607 The Destination for Single-Pass Membrane Proteins Is Influenced Markedly by the Length of the Hydrophobic Domain Federica Brandizzi, Nathalie Frangne, Sophie Marc-Martin, Chris Hawes, Jean-Marc Neuhaus, and Nadine Paris PMCID: PMC150608 Downregulation of a Pathogen-Responsive Tobacco UDP-Glc:Phenylpropanoid Glucosyltransferase Reduces Scopoletin Glucoside Accumulation, Enhances Oxidative Stress, and Weakens Virus Resistance Julie Chong, Rachel Baltz, Corinne Schmitt, Roland Beffa, Bernard Fritig, and Patrick Saindrenan PMCID: PMC150609 An Arabidopsis Mitogen-Activated Protein Kinase Kinase Kinase Gene Family Encodes Essential Positive Regulators of Cytokinesis Patrick J. Krysan, Peter J. Jester, Jennifer R. Gottwald, and Michael R. Sussman PMCID: PMC150610 Efficient Repair of Genomic Double-Strand Breaks by Homologous Recombination between Directly Repeated Sequences in the Plant Genome Ralph Siebert and Holger Puchta PMCID: PMC150611 Physical and Functional Interaction of the Arabidopsis K+ Channel AKT2 and Phosphatase AtPP2CA Isabelle Chérel, Erwan Michard, Nadine Platet, Karine Mouline, Carine Alcon, Hervé Sentenac, and Jean-Baptiste Thibaud PMCID: PMC150612 Evidence for Autocatalytic Cross-Linking of Hydroxyproline-Rich Glycoproteins during Extracellular Matrix Assembly in Volvox Frank Ender, Klaus Godl, Stephan Wenzl, and Manfred Sumper PMCID: PMC150613 The Cell Wall Hydroxyproline-Rich Glycoprotein RSH Is Essential for Normal Embryo Development in Arabidopsis Qi Hall and Maura C. Cannon PMCID: PMC150614 Extensive Interallelic Polymorphisms Drive Meiotic Recombination into a Crossover Pathway Hugo K. Dooner PMCID: PMC150615 |
