Table of Contents
IN BRIEF
REVIEW ARTICLE
The Moss Physcomitrium (Physcomitrella) patens: A Model Organism for Non-Seed PlantsStudies of P. patens, a powerful non-seed plant model system, have made fundamental contributions to diverse fields, including evolutionary developmental and cell biology.
LARGE-SCALE BIOLOGY ARTICLE
Meta Gene Regulatory Networks in Maize Highlight Functionally Relevant Regulatory InteractionsThe generation of gene regulatory networks from thousands of maize transcriptome data sets identifies putative transcription factor targets and candidate regulators of important metabolic pathways.
High-Throughput CRISPR/Cas9 Mutagenesis Streamlines Trait Gene Identification in MaizeApplying an improved high-throughput gene-editing pipeline to functionally mapped candidates promises high-efficiency gene discovery by large-scale knowledge-informed mutagenesis.
A Scanning Electron Micrograph-based Resource for Identification of Loci Involved in Epidermal Development in Tomato: Elucidation of a New Function for the Mixta-like Transcription Factor in LeavesA detailed screen of the Solanum lycopersicum cv M82 × Solanum pennellii ac. LA716 introgression line (IL) population revealed ILs with altered leaf trichome densities, abnormal proportions of different trichome types, and aberrant trichome morphologies leading to the identification of previously unexplored genomic regions with roles in trichome formation in tomato.
RESEARCH ARTICLE
Gene Balance Predicts Transcriptional Responses Immediately Following Ploidy Change in Arabidopsis thalianaPutatively dosage-sensitive genes exhibit coordinated transcriptional responses to ploidy level change in Arabidopsis (Arabidopsis thaliana) consistent with gene duplicate retention being driven by selection on gene balance.
Critical Role of Transcript Cleavage in Arabidopsis RNA Polymerase II Transcriptional ElongationBacktracking/arrest of RNA polymerase II commonly occurs during transcript elongation and reactivation of the enzyme is a prerequisite for plant growth.
Transcription Factors FHY3 and FAR1 Regulate Light-Induced CIRCADIAN CLOCK ASSOCIATED1 Gene Expression in ArabidopsisMembers of the photosensory-signaling pathway orchestrate the expression of the circadian clock gene CCA1 to regulate plant responses to daily changes in the light environment.
Mutagenesis of a Quintuple Mutant Impaired in Environmental Responses Reveals Roles for CHROMATIN REMODELING4 in the Arabidopsis Floral TransitionA genetic screen employed to identify genes that regulate flowering independently of environmental cues revealed a role for the chromatin remodeler CHR4 in promoting floral identity.
The Maize Hairy Sheath Frayed1 (Hsf1) Mutation Alters Leaf Patterning through Increased Cytokinin SignalingIncreased cytokinin signaling in the maize Hairy Sheath Frayed1 mutant modifies leaf development, leading to changes in patterning, growth, and cell identity.
SHORTROOT-Mediated Intercellular Signals Coordinate Phloem Development in Arabidopsis RootsCompanion cells and sieve elements, two key cell types of sugar-conducting phloem, develop as a functional unit in the root via intercellular signals triggered by the SHORTROOT transcription factor.
A Tetratricopeptide Repeat Protein Regulates Carotenoid Biosynthesis and Chromoplast Development in Monkeyflowers (Mimulus)Mutant analysis and transgenic experiments in the model plant monkeyflower (Mimulus) identify a tetratricopeptide repeat protein required for chromoplast development and carotenoid biosynthesis.
Photosynthetic Phosphoribulokinase Structures: Enzymatic Mechanisms and the Redox Regulation of the Calvin-Benson-Bassham CycleThe structures of cyanobacterial and vascular plant phosphoribulokinase, alone and in complex, provide insights into the mechanisms by which the oxygenic photosynthetic organisms regulate the CO2 assimilation in response to the redox signaling.
Arabidopsis FAR-RED ELONGATED HYPOCOTYL3 Integrates Age and Light Signals to Negatively Regulate Leaf SenescencePlants integrate age and light signals via a transcriptional module formed by FAR-RED ELONGATED HYPOCOTYL3 and transcription factor gene WRKY28 to coordinately regulate leaf senescence.
Membrane Chaperoning of a Thylakoid Protease Whose Structural Stability Is Modified by the Protonmotive ForceThe lipid environment of the thylakoid membrane chaperones the folding of an integral signal peptidase whose stability is affected by protonmotive force-mimicking pH conditions.
Calcium-Dependent Protein Kinase CPK1 Controls Cell Death by In Vivo Phosphorylation of Senescence Master Regulator ORE1The calcium-dependent protein kinase CPK1 regulates a pivotal developmental switch in senescence and leaf cell death through direct phosphorylation of transcription factor ORE1.
The GDSL Lipase MHZ11 Modulates Ethylene Signaling in Rice RootsThe GDSL lipase MHZ11 affects OsCTR2 phosphorylation status to facilitate ethylene signaling partially through modulating sterol homeostasis.
Arabidopsis Flippases Cooperate with ARF GTPase Exchange Factors to Regulate the Trafficking and Polarity of PIN Auxin TransportersALA3 and related flippases are important interactors and regulators of ADP ribosylation factor GTPase Exchange Factors regulating the polarity and trafficking of PIN auxin transporters and auxin-mediated development.
Specific Recruitment of Phosphoinositide Species to the Plant-Pathogen Interfacial Membrane Underlies Arabidopsis Susceptibility to Fungal InfectionPlant biotrophic and hemibiotrophic pathogens modulate cellular distribution of host phosphoinositides and recruit PI(4,5)P2 to the plant-pathogen interfacial membrane as a susceptibility factor for disease development.
The Medicago truncatula DREPP Protein Triggers Microtubule Fragmentation in Membrane Nanodomains during Symbiotic InfectionsSymbiosis-dependent microtubule rearrangement and processing in Medicago truncatula by DREPP occur in membrane nanodomains.
The Arabidopsis Plastidial Glucose-6-Phosphate Transporter GPT1 is Dually Targeted to Peroxisomes via the Endoplasmic ReticulumThe metabolite transporter GPT1 is important for NADPH provision in both plastid and peroxisomes, mostly during pollen tube growth towards ovules, and is thus essential for fertilization in Arabidopsis.
The Tapetal Major Facilitator NPF2.8 Is Required for Accumulation of Flavonol Glycosides on the Pollen Surface in Arabidopsis thalianaThe tapetal major facilitator NPF2.8 is required for accumulation of flavonol glycosides on the pollen surface of Arabidopsis (Arabidopsis thaliana).
Biochemical and Genetic Analysis Identify CSLD3 as a beta-1,4-Glucan Synthase That Functions during Plant Cell Wall SynthesisA combination of genetic rescue and biochemical reconstitution experiments demonstrate that the Arabidopsis (Arabidopsis thaliana) CSLD3 cell wall synthase is a beta-1,4-glucan synthase.
