Table of Contents
ON THE INSIDE
SCIENTIFIC CORRESPONDENCE
What Causes Opposing Actions of Brassinosteroids on Stomatal Development?The TOO MANY MOUTHS receptor may be responsible for the organ-specific effects of brassinosteroids.
Article
BIOCHEMISTRY AND METABOLISM
Arabidopsis and Brachypodium distachyon Transgenic Plants Expressing Aspergillus nidulans Acetylesterases Have Decreased Degree of Polysaccharide Acetylation and Increased Resistance to PathogensAcetylation of the cell wall affects plant resistance to pathogens.
Specialized Roles of the Conserved Subunit OST3/6 of the Oligosaccharyltransferase Complex in Innate Immunity and Tolerance to Abiotic StressesA subunit of the oligosaccharyltransferase complex is important for efficient glycosylation of specific glycoproteins, including the receptor kinase EFR involved in innate immunity and the endo-β-1,4-glucanase KORRIGAN1 required for cellulose biosynthesis.
Patatin-Related Phospholipase pPLAIIIδ Increases Seed Oil Content with Long-Chain Fatty Acids in ArabidopsisA phospholipase promotes triacylglycerol accumulation and fatty acid composition.
Veratrole Biosynthesis in White CampionVeratrole, a scent compound in white campion flowers, is derived from l-phenylalanine via a series of reactions that lead through intermediates including a signaling compound in plant defense.
Posttranslational Influence of NADPH-Dependent Thioredoxin Reductase C on Enzymes in Tetrapyrrole SynthesisA thioredoxin reductase influences chlorophyll biosynthesis by reducing target cysteines in its biosynthesis enzymes.
Serine Acts as a Metabolic Signal for the Transcriptional Control of Photorespiration-Related Genes in ArabidopsisPhotorespiratory metabolites contribute to the transcriptional regulation of photorespiration.
CELL BIOLOGY
The anisotropy1 D604N Mutation in the Arabidopsis Cellulose Synthase1 Catalytic Domain Reduces Cell Wall Crystallinity and the Velocity of Cellulose Synthase ComplexesCellulose synthase complexes may optimize cellulose properties and wall mechanical strength by selective exclusion of faulty CesA1 subunits.
A Genetic and Metabolic Analysis Revealed that Cotton Fiber Cell Development Was Retarded by Flavonoid NaringeninFlavonoids and flavenoid synthesis affect white cotton fiber development.
Nonhomologous End Joining-Mediated Gene Replacement in Plant CellsNonhomologous gene exchange by zinc finger nucleases is a novel method for transgene replacement and gene stacking in plants.
ECOPHYSIOLOGY AND SUSTAINABILITY
Arsenite Elicits Anomalous Sulfur Starvation Responses in BarleyThe similar metabolic and morphological responses to arsenic exposure and sulfur deficiency can be explained by the binding of arsenite to key metabolites that control sulfate uptake and reduction.
Global Warming Can Negate the Expected CO2 Stimulation in Photosynthesis and Productivity for Soybean Grown in the Midwestern United StatesRising carbon dioxide and rising temperature have opposing effects on yield, with variations causing slightly higher yields in one year and much lower yields in another.
A Transcriptomic Network Underlies Microstructural and Physiological Responses to Cadmium in Populus × canescensA coexpression network plays a central role in transcriptomic regulation underlying the microstructural and physiological responses to cadmium.
GENES, DEVELOPMENT, AND EVOLUTION
The Manipulation of Auxin in the Abscission Zone Cells of Arabidopsis Flowers Reveals That Indoleacetic Acid Signaling Is a Prerequisite for Organ SheddingPremature loss of leaves, flowers, and fruit can reduce crop yield; manipulating the plant hormone auxin in abscission zone cells alters the timing of organ shedding.
Rhizobial Infection Is Associated with the Development of Peripheral Vasculature in Nodules of Medicago truncatulaCross talk between infection and morphogenesis is required to develop a normal nodule in the legume-rhizobia symbiosis.
The Initiation of Epigenetic Silencing of Active Transposable Elements Is Triggered by RDR6 and 21-22 Nucleotide Small Interfering RNAsAn active transposable element is originally targeted for DNA methylation and epigenetic silencing.
Rice Cytokinin GATA Transcription Factor1 Regulates Chloroplast Development and Plant ArchitectureAltering the expression of a rice transcription factor regulates chloroplast development and modifies plant size, tiller number, and grain production.
An Active Ac/Ds Transposon System for Activation Tagging in Tomato Cultivar M82 Using Clonal PropagationA transposon tagging system was used to develop 509 activation-tagged lines through micropropagation of derived transgenic launchpads.
The Differential Transcription Network between Embryo and Endosperm in the Early Developing Maize SeedTranscriptomic analysis of maize seed soon after pollination aids understanding of how maize embryo and endosperm are differentially regulated in the early development stage.
A Common Histone Modification Code on C4 Genes in Maize and Its Conservation in Sorghum and Setaria italicaA common histone modification code is associated with light induction and cell type-specific gene expression.
MEMBRANES, TRANSPORT, AND BIOENERGETICS
Modified Clp Protease Complex in the ClpP3 Null Mutant and Consequences for Chloroplast Development and Function in ArabidopsisChloroplast proteases are important for embryogenesis, plant growth, and development but show differential contributions.
Arabidopsis Copper Transport Protein COPT2 Participates in the Cross Talk between Iron Deficiency Responses and Low-Phosphate SignalingA copper transport protein affects copper, iron, and phosphate deficiency responses.
Tiered Regulation of Sulfur Deprivation Responses in Chlamydomonas reinhardtii and Identification of an Associated Regulatory FactorChlamydomonas reinhardtii has two-tiered gene regulation under sulfur deficiency, and ARS73a is involved in the regulation of second-tier genes.
PARAQUAT RESISTANT1, a Golgi-Localized Putative Transporter Protein, Is Involved in Intracellular Transport of ParaquatGolgi-localized putative transporter proteins are involved in the intracellular transport of paraquat.
Thylakoid Terminal Oxidases Are Essential for the Cyanobacterium Synechocystis sp. PCC 6803 to Survive Rapidly Changing Light IntensitiesTerminal oxidases are essential for survival under high light/dark changes but not under diurnal conditions.
Capacity and Plasticity of Potassium Channels and High-Affinity Transporters in Roots of Barley and ArabidopsisSteady-state K+ uptake mechanisms differ between NH4+-grown barley and Arabidopsis. Sudden NH4+ withdrawal uncovers dramatic capacity and plasticity of K+ transport among the two model species.
SIGNALING AND RESPONSE
Functional Characterization of Type-B Response Regulators in the Arabidopsis Cytokinin ResponseFive out of 11 related transcription factors were found to mediate the cytokinin response based on complementation analysis of a cytokinin-signaling mutant.
Reduced Carbohydrate Availability Enhances the Susceptibility of Arabidopsis toward Colletotrichum higginsianumCarbon availability is crucial for defense against the hemibiotrophic fungus Colletotrichum higginsianum during necrotrophic fungal growth but is dispensable during biotrophic growth.
Transcriptomic Analysis of the Role of Carboxylic Acids in Metabolite Signaling in Arabidopsis LeavesPerturbations in cellular concentrations of citrate, and to a lesser extent malate, have a major impact on nucleus-encoded transcript abundance, hinting at specific roles of carboxylic acids in metabolite signaling.
AtWRKY40 and AtWRKY63 Modulate the Expression of Stress-Responsive Nuclear Genes Encoding Mitochondrial and Chloroplast ProteinsWRKY transcription factors modulate the expression of nuclear genes encoding mitochondrial and chloroplast proteins via direct promoter binding and coordinate common stress responses.
Identification of Cytokinin-Responsive Genes Using Microarray Meta-Analysis and RNA-Seq in ArabidopsisMeta-analysis of cytokinin-regulated gene expression across multiple transcriptome studies identifies the transcriptional changes occurring in response to cytokinin.
Mutations in the TIR1 Auxin Receptor That Increase Affinity for Auxin/Indole-3-Acetic Acid Proteins Result in Auxin HypersensitivityA directed genetic screen produced auxin receptors with increased activity both in vitro and in the plant.
Unraveling Root Developmental Programs Initiated by Beneficial Pseudomonas spp. BacteriaBeneficial soil-borne Pseudomonas rhizobacteria influence root development and promote growth, independent of their ability to stimulate systemic immunity.
ETHYLENE RESPONSE FACTOR6 Acts as a Central Regulator of Leaf Growth under Water-Limiting Conditions in ArabidopsisETHYLENE RESPONSE FACTOR6 is a central regulator of both leaf growth inhibition and stress tolerance under osmotic stress conditions.
Nuclear Accumulation of Cytosolic Glyceraldehyde-3-Phosphate Dehydrogenase in Cadmium-Stressed Arabidopsis RootsCadmium-induced oxidative stress leads to nuclear relocation of glyceraldehyde-3-phosphate dehydrogenase.
An Autoregulatory Loop Controlling Arabidopsis HsfA2 Expression: Role of Heat Shock-Induced Alternative SplicingA new heat stress-induced splice variant is involved in the self-regulation of HsfA2 transcription in Arabidopsis.
Specific Subunits of Heterotrimeric G Proteins Play Important Roles during Nodulation in SoybeanSubunits of heterotrimeric G proteins are positive regulators of nodule formation in soybean. Interactions with nod factor receptor NFR1 implicates plant G proteins in a yet unexplored signaling network.
SYSTEMS AND SYNTHETIC BIOLOGY
Impact of the Carbon and Nitrogen Supply on Relationships and Connectivity between Metabolism and Biomass in a Broad Panel of Arabidopsis AccessionsMetabolite profiles support a robust prediction of biomass across a range of conditions and accounts for environmental influences on metabolic networks.
Reduction of Oxalate Levels in Tomato Fruit and Consequent Metabolic Remodeling Following Overexpression of a Fungal Oxalate DecarboxylaseOxalate decarboxylase-regulated metabolic networks may provide a widely applicable strategy for enhancing crop nutritional value.
