Table of Contents
ON THE INSIDE
BREAKTHROUGH TECHNOLOGIES
PaCeQuant: A Tool for High-Throughput Quantification of Pavement Cell Shape CharacteristicsAn ImageJ-based tool enables rapid and unbiased quantification of multiple shape features in leaf epidermis pavement cells
Articles
BIOCHEMISTRY AND METABOLISM
Different Routes for Conifer- and Sinapaldehyde and Higher Saccharification upon Deficiency in the Dehydrogenase CAD1Down-regulation of CAD1 in poplar leads to different metabolic routes for coniferaldehyde and sinapaldehyde and alters lignin amount and structure, improving the physicochemical properties of wood for saccharification.
Silencing CAFFEOYL SHIKIMATE ESTERASE Affects Lignification and Improves Saccharification in PoplarDown-regulation of CSE in poplar reduces lignin content, leading to a higher glucose release per plant upon saccharification.
Highly Decorated Lignins in Leaf Tissues of the Canary Island Date Palm Phoenix canariensisPhoenix canariensis leaf lignins vary between tissue region and contain an array of pendent groups.
Impaired Malate and Fumarate Accumulation Due to the Mutation of the Tonoplast Dicarboxylate Transporter Has Little Effects on Stomatal BehaviorManipulation of tonoplastic organic acid transport by inhibition of the tDT impacts mitochondrion metabolism, while the overall stomatal and photosynthetic performance is not affected.
S5H/DMR6 Encodes a Salicylic Acid 5-Hydroxylase That Fine-Tunes Salicylic Acid HomeostasisSALICYLIC ACID 5-HYDROXYLASE catalyzes the formation of 2,5-DHBA both in vitro and in vivo and fine-tunes SA homeostasis in Arabidopsis.
A Synthetic Glycan Microarray Enables Epitope Mapping of Plant Cell Wall Glycan-Directed AntibodiesDetermining exact epitopes for cell wall-directed monoclonal antibodies provides the basis for a detailed elucidation of polysaccharide structures at the cellular level.
CELL BIOLOGY
SIPP, a Novel Mitochondrial Phosphate Carrier, Mediates in Self-IncompatibilitySIPP mediates self-incompatibility in Nicotiana and interacts with StEP in mitochondria of pollen tubes.
ECOPHYSIOLOGY AND SUSTAINABILITY
Abscisic Acid Down-Regulates Hydraulic Conductance of Grapevine Leaves in Isohydric Genotypes OnlyAbscisic acid reduces the water transport capacity of grapevine leaves, most notably in isohydric genotypes.
Xylem Sap Surface Tension May Be Crucial for Hydraulic SafetyXylem sap surface tension of two timberline conifers remarkably changed across seasons and revealed pronounced effects on tree hydraulic safety.
GENES, DEVELOPMENT, AND EVOLUTION
Cytokinin-Auxin Crosstalk in the Gynoecial Primordium Ensures Correct Domain PatterningCytokinin promotes auxin biosynthesis in and efflux from the medial gynoecial domain in Arabidopsis, whereas auxin blocks cytokinin from apical and lateral domains to regulate patterning.
Wounding Triggers Callus Formation via Dynamic Hormonal and Transcriptional ChangesWounding triggers callus formation in Arabidopsis through the activation of cytokinin biosynthesis and AP2/ERF-mediated developmental pathway.
MiR408 Regulates Grain Yield and Photosynthesis via a Phytocyanin ProteinMiR408 positively regulates rice grain yield by targeting the uclacyanin gene OsUCL8 and, in turn, affects photosynthesis.
Cytological and Transcriptomic Analyses Reveal Important Roles of CLE19 in Pollen Exine FormationThe proper amount of CLE19 is required for the normal formation of pollen exine through regulating the expression of AMS and its downstream networks.
Light and Plastid Signals Regulate Different Sets of Genes in the Albino Mutant Pap7-1The albino pap7-1 mutant of Arabidopsis reveals the relative impact of light and plastid developmental stage on the expression of nuclear genes involved in metabolism and photosynthesis.
The TRAF Mediated Gametogenesis Progression (TRAMGaP) Gene Is Required for Megaspore Mother Cell Specification and Gametophyte DevelopmentTRAMGaP gene coordinates the expression of diverse sets of genes to modulate MMC specification and gametophyte development in Arabidopsis.
A uORF Represses the Transcription Factor AtHB1 in Aerial Tissues to Avoid a Deleterious PhenotypeAn upstream ORF encoded in an homeodomain-leucine zipper I gene and regulated by a chloroplast signal causes ribosome stalling in aerial tissues that had been exposed to light.
MEMBRANES, TRANSPORT, AND BIOENERGETICS
Iron-Nicotianamine Transporters Are Required for Proper Long Distance Iron SignalingLoss of iron-nicotianamine transporters causes mislocalization of iron in Arabidopsis leaves that leads to profound defects in the long-distance signaling of iron status to roots.
The Nitrate Transporter Family Protein LjNPF8.6 Controls the N-Fixing Nodule ActivityNitrate Transporter 1/Peptide Transporter Family protein NPF8.6 plays a key role in nodule functioning in Lotus japonicus.
Paralogs of the C-Terminal Domain of the Cyanobacterial Orange Carotenoid Protein Are Carotenoid Donors to Helical Carotenoid ProteinsThe cyanobacterial CTDHs, homodimers sharing one carotenoid molecule, are capable of taking the carotenoid from membranes and easily giving it to other proteins.
SIGNALING AND RESPONSE
A Histone Code Reader and a Transcriptional Activator Interact to Regulate Genes for Salt ToleranceGmPHD6 and its coactivator, LHP1, form a transcriptional regulation complex in which GmPHD6 targets gene promoters, whereas LHP1 activates their expression under salt stress in soybean.
A Nucleus-Localized Long Non-Coding RNA Enhances Drought and Salt Stress ToleranceA long noncoding RNA enhances Arabidopsis tolerance to drought and salt stress by modulating the expression of stress-related genes.
Transcription Factor OsWRKY53 Positively Regulates Brassinosteroid Signaling and Plant ArchitectureOsWRKY53 is a novel positive regulator of rice BR signaling, and its phosphorylation by OsMAPK6 is indispensable for its function in rice.
Overexpression of RING Domain E3 Ligase ZmXerico1 Confers Drought Tolerance through Regulation of ABA HomeostasisOverexpression of ZmXerico1 RING-H2 protein improves water use efficiency and drought tolerance in transgenic maize plants through reduction in ABA8OX protein stability and ABA degradation.
Systematic Mutagenesis of Serine Hydroxymethyltransferase Reveals an Essential Role in Nematode ResistanceA soybean serine hydroxymethyltransferase has a unique and essential role in soybean cyst nematode resistance.
Carnosic Acid and Carnosol, Two Major Antioxidants of Rosemary, Act through Different MechanismsRosemary leaves contain two phenolic diterpenes, carnosic acid and carnosol, which provide protection against oxidative stress by distinct mechanisms involving ROS scavenging or inhibition of lipid oxidation.
DELLA-GAF1 Complex Is a Main Component in Gibberellin Feedback Regulation of GA20 Oxidase 2GAF1-binding sites are necessary for GA feedback regulation of AtGA20ox2 in transgenic Arabidopsis, indicating that the DELLA-GAF1 complex is a main component of the GA feedback regulation of AtGA20ox2.
Nitric Oxide Mediates Nitrite-Sensing and Acclimation and Triggers a Remodeling of LipidsIn Phaedactylum, NO produced from nitrite by the nitrate reductase up-regulates the expression of genes involved in nitrite assimilation into amino acids and triggers a remodeling of lipids.
A Genetic Screen for Impaired Systemic RNAi Highlights the Crucial Role of DICER-LIKE 2DCL2 is required for efficient RDR6-dependent systemic posttranslational gene silencing, recruiting RNA-DEPENDENT RNA POLYMERASE6 and promoting the production of dsRNA that is mainly processed into 21-nucleotide siRNAs by DCL4 in wild-type plants.
Type B Response Regulators Act As Central Integrators in Transcriptional Control of the Auxin Biosynthesis Enzyme TAA1Transcriptional regulation of TAA1 by various developmental, hormonal and environmental signals is directly regulated by Arabidopsis type B ARRs, which serve as central integrators.
Selinene Volatiles Are Essential Precursors for Maize Defense Promoting Fungal Pathogen ResistanceMaize terpene synthase21 encodes a β-selinene synthase enabling the production of antifungal defenses.
The RING-Type E3 Ligase XBAT35.2 Is Involved in Cell Death Induction and Pathogen ResponseThe Arabidopsis RING-type E3 ligase XBAT35.2 induces cell death, reduces susceptibility to pathogens, and is involved in the proteasome-dependent turnover of defense-related ACD11.
Histone Deacetylase Is Required for GA-Induced Programmed Cell Death in Maize Aleurone LayersGA induces PCD in maize aleurone layers through down-regulating the HAT activity and thereby indirectly increasing the relative HDAC activity, followed by the ROS-mediated signaling pathway.
