Table of Contents
IN BRIEF
RESEARCH ARTICLES
Horsetails Are Ancient Polyploids: Evidence from Equisetum giganteumAn ancient polypoloidy event in horsetails during the late Cretaceous predates the divergence of today's extant species and may have contributed to the longevity of the genus Equisetum.
Uncovering DELLA-Independent Gibberellin Responses by Characterizing New Tomato procera MutantsA loss-of-function mutation in the single tomato DELLA gene PROCERA revealed DELLA-related phenotypes and facilitated the identification of DELLA-independent gibberellin responses.
Genome-Wide Mapping of Structural Variations Reveals a Copy Number Variant That Determines Reproductive Morphology in CucumberGenome-wide scanning of large size sequence changes revealed a tandem duplication of a DNA segment that gives rise to cucumbers bearing only female flowers.
Dynamic Changes in ANGUSTIFOLIA3 Complex Composition Reveal a Growth Regulatory Mechanism in the Maize LeafTAP analysis to unravel protein complex composition in dividing and expanding tissue in a growing maize leaf reveals ANGUSTIFOLIA3 association with distinct GROWTH-REGULATING FACTORs to fine-tune growth.
Regulation of Jasmonate-Mediated Stamen Development and Seed Production by a bHLH-MYB Complex in ArabidopsisMYC5 is a target of JAZs and functions redundantly with MYC2, MYC3, and MYC4 to regulate stamen development and seed production via interactions with the MYB transcription factors MYB21 and MYB24.
Regulation of Jasmonate-Induced Leaf Senescence by Antagonism between bHLH Subgroup IIIe and IIId Factors in ArabidopsisThe bHLH subgroup IIIe factors MYC2, MYC3, and MYC4 redundantly meditate JA-induced leaf senescence; the subgroup IIId factors bHLH03, bHLH13, bHLH14, and bHLH17 antagonize the subgroup IIIe factors.
Auxin Produced by the Indole-3-Pyruvic Acid Pathway Regulates Development and Gemmae Dormancy in the Liverwort Marchantia polymorphaAuxin, which is synthesized in the liverwort Marchantia polymorpha via the smallest known toolkit among land plants, plays critical roles in development and dormancy of the gametophyte generation.
The Arabidopsis SWI2/SNF2 Chromatin Remodeling ATPase BRAHMA Targets Directly to PINs and Is Required for Root Stem Cell Niche MaintenanceThe Arabidopsis SWI/SNF chromatin-remodeling ATPase BRAHMA acts to maintain the stem cell niche in roots by modulating auxin distribution via regulation of the expression of PINs.
A Gibberellin-Mediated DELLA-NAC Signaling Cascade Regulates Cellulose Synthesis in RiceGibberellin (GA) promotes cellulose synthesis by degrading SLR1 (a key repressor of GA signaling), thereby freeing NAC transcription factors, which are crucial for secondary cell wall formation.
The Arabidopsis R-SNARE VAMP721 Interacts with KAT1 and KC1 K+ Channels to Moderate K+ Current at the Plasma MembraneOpposing actions of vesicle trafficking proteins on K+ channel gating implicate a ‘handoff’ in binding and channel control during vesicle fusion.
Phytosulfokine Regulates Growth in Arabidopsis through a Response Module at the Plasma Membrane That Includes CYCLIC NUCLEOTIDE-GATED CHANNEL17, H+-ATPase, and BAK1The peptide receptor PSKR1 forms a nanocluster with the cation channel CNGC17 and the H+-ATPase at the plasma membrane that promotes cell expansion.
A Dedicated Type II NADPH Dehydrogenase Performs the Penultimate Step in the Biosynthesis of Vitamin K1 in Synechocystis and ArabidopsisThe biosynthesis of vitamin K1 requires an additional bona fide step that consists of the prerequisite reduction of the demethylnaphthoquinone ring prior to its transmethylation.
Functional and Genetic Analysis Identify a Role for Arabidopsis ARGONAUTE5 in Antiviral RNA SilencingExpression of AGO5 is induced by virus infection and, in concert with AGO2, the AGO5 protein restricts Potato virus X infection in Arabidopsis.
Wheat Stripe Rust Resistance Protein WKS1 Reduces the Ability of the Thylakoid-Associated Ascorbate Peroxidase to Detoxify Reactive Oxygen SpeciesThe wheat WKS1 protein reduces the activity of a chloroplast enzyme that detoxifies reactive oxygen species and causes cell death in the infected regions, conferring partial resistance to stripe rust.
The Arabidopsis Transcription Factor NAC016 Promotes Drought Stress Responses by Repressing AREB1 Transcription through a Trifurcate Feed-Forward Regulatory Loop Involving NAPThe Arabidopsis transcription factor NAC016 activates drought stress responses by inducing NAP transcription and repressing AREB1 transcription by binding to different regions of the AREB1 promoter.
Repair of DNA Damage Induced by the Cytidine Analog Zebularine Requires ATR and ATM in ArabidopsisThe cytidine analog zebularine triggers DNA damage at replication forks, which is signaled by ATR and ATM and detoxified by synthesis-dependent strand-annealing homologous recombination.
Involvement of Arabidopsis Hexokinase1 in Cell Death Mediated by Myo-Inositol AccumulationA novel pathway of HXK1-mediated cell death in which two MIPS enzymes act cooperatively highlights a novel checkpoint of inositol homeostasis in plants.
