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The development of the abscission layer plays a determinative role in seed shattering, one of the critical traits affecting grain yield in crops. Fine-tuning the regulation of this process will help to improve grain yield by mitigating seed loss during crop production. Through a series of experiments, Jiang et al. (pages
Volume 31, Issue 1, January 2019
EDITORIAL
The Plant Cell Celebrates 30 Years of Publishing the Best Work in Plant Biology
IN BRIEF
The Smell of Transcription: The SlMYC1 Transcription Factor Makes Tomato Plants Smelly
HOS15 Coregulates Photoperiodic Flowering with the Evening Complex via Transcriptional Repression of GIGANTEA
Suspended Animation: A Transcriptional Module Triggers Embryo Formation in Suspensor Cells
Solving a Cold Case: Identification of Promoter Elements to Complement Medicago nin Mutants
Master MYCs: MYC2, the Jasmonate Signaling “Master Switch”
A Partnership for ABA Responses
Ferroptosis: A Companion of ROS in Fighting Magnaporthe in Rice
Too Much, Take it Back: PAP Moves from the Cytosol to Plastids and Mitochondria for Degradation via PAPST
RESEARCH ARTICLES
The APETALA2-Like Transcription Factor SUPERNUMERARY BRACT Controls Rice Seed Shattering and Seed Size
The APETALA2-like transcription factor SUPERNUMERARY BRACT confers seed shattering by positively regulating qSH1 and SH5, while altering seed size by modulating longitudinal cell elongation in rice glumes.
HOS15 Interacts with the Histone Deacetylase HDA9 and the Evening Complex to Epigenetically Regulate the Floral Activator GIGANTEA
The High Expression Of Osmotically Responsive Gene 15–Evening Complex–histone deacetylase 9 histone-modifying complex regulates photoperiodic flowering via transcriptional repression of GIGANTEA.
A Robust Auxin Response Network Controls Embryo and Suspensor Development through a Basic Helix Loop Helix Transcriptional Module
A robust auxin network controls reprogramming toward embryogenesis in suspensor cells via a basic Helix-Loop-Helix transcriptional module, a process involving large transcriptomic changes before anatomical changes.
A Remote cis-Regulatory Region Is Required for NIN Expression in the Pericycle to Initiate Nodule Primordium Formation in Medicago truncatula
Discrete regulatory DNA elements, including far upstream located ones, regulate a proper spatiotemporal expression of NIN, a key transcription factor required during symbiotic root nodule development.
The Role of Abscisic Acid Signaling in Maintaining the Metabolic Balance Required for Arabidopsis Growth under Nonstress Conditions
Subclass III SnRK2 kinases play key roles in abscisic acid signaling, which is responsible for maintaining normal metabolism and leaf growth under nonstress conditions.
MYC2 Regulates the Termination of Jasmonate Signaling via an Autoregulatory Negative Feedback Loop
The jasmonate-inducible transcription factor MYC2 activates the expression of three MYC2-TARGETED BHLH (MTB) proteins, which function as competitive repressors of MYC2-mediated transcription of jasmonate-responsive genes in tomato.
Abscisic Acid Inhibits Rice Protein Phosphatase PP45 via H2O2 and Relieves Repression of the Ca2+/CaM-Dependent Protein Kinase DMI3
In rice, ABA induces the production of H2O2 by NADPH oxidase, which inhibits the activity of a type 2C protein phosphatase and activates a calcium/calmodulin-dependent protein kinase.
Arabidopsis Endoplasmic Reticulum-Localized UBAC2 Proteins Interact with PAMP-INDUCED COILED-COIL to Regulate Pathogen-Induced Callose Deposition and Plant Immunity
The interacting ER proteins UBAC2 and PICC positively regulate the accumulation of the PMR4 callose synthase responsible for pathogen-induced callose deposition during plant immune responses.
Binding of the Magnaporthe oryzae Chitinase MoChia1 by a Rice Tetratricopeptide Repeat Protein Allows Free Chitin to Trigger Immune Responses
Magnaporthe oryzae–secreted chitinase suppresses chitin triggered immune response; however, rice plants mount immune response by deploying a tetratricopeptide-repeat protein or by direct recognition of this chitinase.
Iron- and Reactive Oxygen Species-Dependent Ferroptotic Cell Death in Rice-Magnaporthe oryzae Interactions
Iron- and ROS-dependent accumulation of lipid peroxides is involved in the ferroptotic cell death response in rice during avirulent Magnaporthe oryzae infection.
Uncoupled Expression of Nuclear and Plastid Photosynthesis-Associated Genes Contributes to Cell Death in a Lesion Mimic Mutant
The salicylic acid-responsive regulator SIGMA FACTOR BINDING PROTEIN1 localizes in the nucleus and chloroplasts and uncouples photosynthesis-associated gene expression, contributing to the lsd1 lesion-mimic phenotype.
PAPST2 Plays Critical Roles in Removing the Stress Signaling Molecule 3′-Phosphoadenosine 5′-Phosphate from the Cytosol and Its Subsequent Degradation in Plastids and Mitochondria
PAPST2 imports the stress signaling molecule PAP into the chloroplast and mitochondria, providing a missing link in our understanding of the organelle-to-nucleus PAP retrograde signaling pathway.
Phosphatidic Acid Directly Regulates PINOID-Dependent Phosphorylation and Activation of the PIN-FORMED2 Auxin Efflux Transporter in Response to Salt Stress
Phosphatidic acid in the plasma membrane interacts with PINOID and regulates auxin redistribution during the plant’s response to salt stress.
