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Volume 28, Issue 1, January 2016
IN BRIEF
The Nucleotides That Bind: Finding the Motif behind the Hypoxia Response
Keep Your Cool: A Regulatory Region to Inactivate Heat Stress Transcription Factors under Normal Conditions
Integrative Study Reveals Sodium Dependence of a Barley Borate Transporter
Identification of a Distinct, Cutin-Related Pathway for Biosynthesis of Triacylglycerol Lipids in Bayberry
PERSPECTIVE
It's Time for Some “Site”-Seeing: Novel Tools to Monitor the Ubiquitin Landscape in Arabidopsis thaliana
RESEARCH ARTICLES
Repeated Whole-Genome Duplication, Karyotype Reshuffling, and Biased Retention of Stress-Responding Genes in Buckler Mustard
This work describes cytogenetic and transcriptome analyses of repeated WGD events and genome reshuffling supporting preferential retention of stress-responding duplicates showing a signature of strong purifying selection.
Epigenetic Regulation of Vegetative Phase Change in Arabidopsis
The deposition of H3K27me3 at MIR156A and MIR156C mediates the vegetative phase change in Arabidopsis.
The WD40 Domain Protein MSI1 Functions in a Histone Deacetylase Complex to Fine-Tune Abscisic Acid Signaling
The histone binding WD40-repeat protein MSI1 forms a complex with a histone deacetylase that represses abscisic acid receptor genes, thus affecting sensitivity to this phytohormone in Arabidopsis.
RNA Binding Proteins RZ-1B and RZ-1C Play Critical Roles in Regulating Pre-mRNA Splicing and Gene Expression during Development in Arabidopsis
Plant-specific RNA binding proteins RZ-1B and RZ-1C interact with a number of highly conserved serine/arginine-rich proteins to regulate RNA splicing and gene expression in Arabidopsis.
The Structure-Specific Endonucleases MUS81 and SEND1 Are Essential for Telomere Stability in Arabidopsis
Analyses of structure-specific endonuclease mutants show that SEND1 plays a crucial backup role to MUS81 in maintaining genome stability and bring to light its unexpected role in telomere homeostasis.
Complementary Activities of TELOMERE REPEAT BINDING Proteins and Polycomb Group Complexes in Transcriptional Regulation of Target Genes
TELOMERE REPEAT BINDING proteins sustain repression of target genes they share with Polycomb Group repressive complexes.
Pipecolic Acid Orchestrates Plant Systemic Acquired Resistance and Defense Priming via Salicylic Acid-Dependent and -Independent Pathways
Systemic acquired resistance and the associated priming response are regulated by a pipecolic acid/FMO1 signaling module that controls both salicylic acid-dependent and -independent defense pathways.
Immobilized Subpopulations of Leaf Epidermal Mitochondria Mediate PENETRATION2-Dependent Pathogen Entry Control in Arabidopsis
Powdery mildew attack induces arrest of mitochondria at sites of attempted invasion, peripheral accumulation of the myrosinase PEN2, and redox imbalances in the matrix of the immobilized mitochondria.
Comparative Analysis of the Flax Immune Receptors L6 and L7 Suggests an Equilibrium-Based Switch Activation Model
Correlation between cell death signaling, nucleotide binding, and ligand binding activities of plant immune receptor variants suggests activation is based on altering the equilibrium between ON/OFF states.
Redundant ERF-VII Transcription Factors Bind to an Evolutionarily Conserved cis-Motif to Regulate Hypoxia-Responsive Gene Expression in Arabidopsis
Group VII ERF transcription factors regulate the low-oxygen response by binding to a newly identified promoter element in hypoxia-responsive genes, leading to their transactivation.
The Transcriptional Cascade in the Heat Stress Response of Arabidopsis Is Strictly Regulated at the Level of Transcription Factor Expression
Constitutive activation of the master regulators of the heat stress response highly induces the expression of molecular chaperones, but not that of transcription factors.
A Barley Efflux Transporter Operates in a Na+-Dependent Manner, as Revealed by a Multidisciplinary Platform
A barley efflux transporter that is primarily borate-permeable operates as a channel in a Na+-dependent manner.
Reduced Biosynthesis of Digalactosyldiacylglycerol, a Major Chloroplast Membrane Lipid, Leads to Oxylipin Overproduction and Phloem Cap Lignification in Arabidopsis
The short inflorescence stem phenotype of a chloroplast lipid mutant is caused by jasmonic acid overproduction, demonstrating a direct link between the biosynthesis of this lipid and jasmonic acid.
Aspartyl Protease-Mediated Cleavage of BAG6 Is Necessary for Autophagy and Fungal Resistance in Plants
BAG6 processing confers plant immunity via autophagy.
A Novel Pathway for Triacylglycerol Biosynthesis Is Responsible for the Accumulation of Massive Quantities of Glycerolipids in the Surface Wax of Bayberry (Myrica pensylvanica) Fruit
Biochemical, morphological, and transcriptomic characterization of an unusual surface wax produced by Bayberry fruits reveals a cutin-related biosynthetic pathway that synthesizes oilseed-like glycerolipids in plants.