Volume 186, Issue 1, May 2021

The wounding-induced reactive oxygen species (ROS) wave is accompanied by a systemic whole-plant redox response in Arabidopsis.

Thiol-dependent redox regulatory and antioxidant systems act concertedly to modulate chloroplast metabolism and signaling function.

Peroxisomes are redox nodes playing a diverse range of roles in cell functionality and in the perception of and responses to changes in their environment.

Plant mitochondria are key components of redox homeostasis and play vital roles in regulating cellular metabolism, thereby affecting development and stress tolerance at the whole plant level.

A review of recent progress in understanding the mechanisms whereby plants utilize selective and reversible redox signaling to establish immunity.

An analysis of the role of reactive oxygen species, reactive nitrogen species, and redox components in hypoxia signaling pathways and an outline of potential future research avenues.

Oxygen and reactive oxygen species regulate plant growth, development, and differentiation through multiple interlinked signaling pathways.

Current cysteine redoxome profiling can characterize systematically diverse oxidative posttranslational modifications

Methyl viologen-induced photo-oxidative stress increases hydrogen peroxide and oxidation of glutathione in chloroplasts, cytosol, and mitochondria, as well as autonomous oxidation in mitochondria.

PHOSPHOGLYCERATE DEHYDROGENASE 3, an oxidoreductase in leaf chloroplasts with strong preference to reduce the stromal NAD(H) instead of the NADP(H) pool, is required for full photosynthetic capacity.

Energy transfer between H₂ and NADPH is bi-directional and crucial for the maintenance of redox balance under light fluctuations.

Natural genetic variation reveals that complex transcriptional regulation and inhibition of photosynthesis differentiate ozone sensitivity in Arabidopsis.

Targeting the phiC31 phage integrase for direct export from Agrobacterium to chloroplasts reveals the feasibility of retargeting the Agrobacterium Vir proteins for T-DNA delivery to chloroplasts.

Trafficking protein complexes recognize specific linear motifs or modifications on integral membrane proteins and this recognition guides their transport between the different cellular compartments.

Organ-specific molecular markers provide an important toolset to assess seedling growth in Arabidopsis.

PtrHSFB3-1 and PtrMYB092 mediate transcriptional reprogramming of secondary cell wall biosynthesis during tension wood formation by direct and indirect transcription factor–DNA interactions with regulatory specificity.

α-Tomatine is the major toxic saponin secreted from tomato roots at high levels during early growth stages and plays an important role in the formation of bacterial communities in the rhizosphere.

Cyanobacterial thioredoxin reductases diverged early in the evolution into flavo- or metallo-enzymes to adapt the regulation of their metabolism to the prevailing environment.

Metabolic flux analysis of photosynthesizing leaves suggests glucose-6-phosphate oxidation is the main source of non-photorespiratory CO₂ loss.

Expressing a yeast maltase in chloroplasts of the Arabidopsis maltose transporter mutant mex1 prevents the marked developmental defects typical for that mutant and enhances plant frost tolerance.

SYNTAXIN OF PLANTS31 (SYP31) and SYP32 play partially redundant roles in pollen development by modulating protein trafficking and Golgi structure.

FANCM has a role in shaping meiotic crossover in plants, and its function in meiotic bivalent formation has diverged in Arabidopsis and lettuce.

Evaporation-driven hydraulic redistribution may be an important drought tolerance mechanism for plants.

A complete digital reconstruction of a grapevine xylem network reveals that network connectivity imparts greater resistance to drought-induced embolism spread than pit membrane properties suggest.

With the release of this high-quality genome for Brassica carinata, complete genomes are now available for all six species in the Brassica U's triangle, providing rich resources for comparative and functional genomics analyses of Brassicaceae species.

Heat shock protein 101 promotes flowering under nonstress conditions in Arabidopsis (Arabidopsis thaliana (L.) Heynh.).

Transposable elements exhibit variable responses to abiotic stress within transposon families and between genotypes due to both genetic and epigenetic variation.²

TEOSINTE BRANCHED1/CYCLOIDEA/PCF transcription factors repress trichome formation on cotyledons by disrupting a trimeric transcriptional activation complex.

Ornithine decarboxylase genes expressed in pistils underly a major unilateral incompatibility locus required for S-RNase-independent pollen selection/rejection in the wild tomato Solanum pennellii.

Inactivation of indole-3-acetic acid by an IAA-amido synthetase inhibits abscisic acid signaling and reduces protective proteins, leading to poor seed storability in rice.

An R-gene in hexaploid wheat causes premature death of the entire seedling in the absence of any pathogen or external stimulus.

A ribosomal protein controls rice leaf width through translational regulation of auxin response factors and a key transcription factor regulating blade lateral outgrowth.

The OsmiR396/Growth Regulating Factor module plays a pivotal role in rice grain size regulation and genetically regulates OsmiR408, which acts as an embryo-specific grain size regulator.

Brassinosteroid plant hormones are involved in repressing the seed maturation program during the seed-to-seedling transition in Arabidopsis.

MdMYB44 modulates fruit malate accumulation and vacuolar acidification, and the genetic variation in the promoter of MdMYB44 determines fruit malate content in apple.

During state transitions, the ratio of quenched and unquenched photosystem II complexes is homogeneously changed in individual cells of the cyanobacterium Synechococcus elongatus.

Soybean Yellow Stripe-like 7 encodes an oligopeptide transporter that localizes to the symbiosome membrane in nodules and contributes to nitrogen fixation and symbiosome development.

FTSH3 plays an important role in regulating Complex I abundance when Complex I is limiting.

Deficiency in alcohol dehydrogenase suppresses arsenite uptake via silicate transporters and reduces arsenic levels in rice grains.

Sphingolipidomes from microsomes, vacuole, plasma, and detergent-resistant membranes from Arabidopsis are described and compared and the possible roles of sphingolipid classes and individual species are discussed.

Transporter CsSWEET7a removes hexose from companion cells to the apoplasmic space to stimulate fruit phloem unloading so that additional sugars can be unloaded to promote fruit growth.

Copper distribution by a phloem-localized transporter is essential for the transition to flowering, inflorescence architecture, floret fertility, size, weight and protein accumulation in seeds.

Transcriptome and metabolite profiles of maize plants under single and combined drought and cold stresses reveal an abscisic acid-dependent maize acclimation mechanism to the stress combination.

A systems biology approach reveals three transcription factors involved in the regulation of NRT2 nitrate transporters in response to combinations of nitrogen and carbon treatments.

The cytosolic serine/threonine/tyrosine kinase STY46 negatively regulates Barley stripe mosaic virus replication by phosphorylating and interacting with cb protein.

Nitrate-dependent alleviation of ammonium toxicity involves negative regulation of a nitrate channel by a kinase.

The BTB-TAZ protein interacts with and promotes ubiquitination and degradation of DELLA protein, thus regulating plant growth in response to nitrate.

ALTERED MERISTEM PROGRAM1 and isoforms of the cytochrome P450 CYP78A regulate plastochron and leaf senescence in non-cell-autonomous/organ-specific manners, and have a close, albeit complex, and functional relationship.

Physiological and biophysical evidence for insensitivity of stomata to abscisic acid in ferns and lycophytes supports stomatal responsiveness to abscisic acid evolved after the divergence of ferns.