Volume 167, Issue 4, April 2015

New fluorescent probes allow the study of phloem transport in Arabidopsis.

Metabolite masses measured using LC-MS can be sorted into structural classes using relative mass defect filtering to accelerate the annotation of novel metabolites.

Legume root hairs remodel the interface with symbiotic rhizobia prior to initiating the tubular-growing infection thread.

Fruit monoterpene synthesis in kiwifruit is transcriptionally regulated by transcription factors that activate the terpene synthase promoter.

A castor phospholipase is involved in editing ricinoleic acid from the membrane lipids in transgenic Arabidopsis seeds.

The Arabidopsis AXY9 gene encodes a plant-specific component of a cell wall polysaccharide acetylation pathway.

Tricin, a flavonoid, is a lignification monomer in grasses where it functions as a nucleation site for lignin polymer formation.

Depleting galactose from the cell wall polysaccharide xyloglucan leads to a disruption of diverse cellular and physiological processes involved in normal plant growth.

Autophagy is responsible for the degradation of leaf chloroplasts and root plastids in rice plants and functions during energy limitation caused by interruption of photosynthesis.

Starch contents are highly correlated with the expression levels of a CO₂-responsive gene which may regulate coordinated expression of starch synthesis genes.

Methionine metabolism, ethylene production, and isoprenoid biosynthesis are involved in seed germination and thermoinhibition.

A specific protein kinase plays an important role in pollen tube growth and likely participates in Ca²⁺ homeostasis through the modulation of Ca²⁺ influx.

A phospholipid-binding protein regulates intracellular trafficking and vacuole formation.

Viral replication complexes are found in phloem sieve elements and in xylem vessels.

Shoot and root morphology and root anatomical plasticity facilitate effective water uptake and use, making wheat more tolerant of water deficit stress than rice.

The primary mechanism of aluminum toxicity was found to be apoplastic, with aluminum binding to the cell wall inhibiting loosening required for root elongation.

Natural variations in photosynthetic acclimation to different growth irradiances, and to a step-wise increase in growth irradiance, allows genetic analysis of this complex phenomenon.

Long root hairs and shallow basal roots improve phosphorus uptake in common bean more in combination than in isolation.

Naturally evolved double mutants in 5-enolpyruvylshikimate-3-phosphate synthase mimic engineered glyphosate-tolerant 5-enolpyruvylshikimate-3-phosphate synthase in crops and confer high-level glyphosate resistance.

A set of transcriptional repressors negatively regulates the expression of genes involved in different branches of the phenylpropanoid pathway.

Suppression of stem cell niche respecification in the shoot meristem periphery is mediated by a putative carboxypeptidase.

Phenotypic variation of maize root system architecture highlights a genetic trade-off between small compact and large, exploratory root systems.

A clathrin heavy chain participates in Nod factor signal transduction and infection thread formation in the leguminous symbiosis with rhizobia.

Disruption of four genes severely reduces the active phosphate transport but does not impact phosphate sensing capacities in Arabidopsis.

A nucleus-encoded chloroplast protein, which controls the stability and translation of the messenger RNA encoding the PsaA subunit of Photosystem I, responds post-transcriptionally to iron availability.

The type I H⁺-PPase is a key component of the sieve element-companion cell complexes and involved in phloem loading in Arabidopsis.

Protection of a homoiochlorophyllous resurrection plant against oxidative damage during dehydration involves changes in the levels and quaternary organization of photosynthetic proteins.

Efficient light to heat dissipation in Chlamydomonas reinhardtii requires binding of a stress-related light-harvesting complex protein to photosystem II and associated light-harvesting complexes II.

An Arabidopsis transcription factor modulates phosphate homeostasis by regulating phosphate uptake and translocation.

2-Cys peroxiredoxins and thylakoid ascorbate peroxidase act together to protect plants against high light damage by creating a water-water cycle and restricting light-induced redox signaling.

Nitric oxide positively regulates a key Arabidopsis peroxidase through S-nitrosylation and enhances resistance to oxidative stresses.

An E3 ligase PRT6 mutant with constitutive expression of hypoxic genes confers tolerance against submergence via sugar conservation as well as resistance to starvation.

A Ca²⁺ signal mediated by a glutamate receptor homolog promotes seed germination, opposing the effect of abscisic acid.

An unusual multidomain glutaredoxin and its protein partner affect plant development and flowering time in relation to photoperiod in Arabidopsis.

A unique UDP-glucosyltransferase plays an important role in ABA homeostasis by glucosylating ABA to ABA-glucose ester.

A green leaf volatile primes wheat for enhanced defense against the hemibiotrophic fungus F. graminearum by boosting jasmonate-related defenses.

Global patterns of metabolic responses upon single gene perturbations are specific to gene functions, but they are coordinated with characteristics of the perturbed genes.

Medicago truncatula border cells contain elevated levels of specialized metabolites that are important in plant-microbe signaling and defense.

A network model of global transcriptional interactions, based on clustering of transcriptionally correlated genes using publicly available floral gene expression data sets, provides a community resource for studies of reproductive gene expression.

Proteome-wide identification of S-nitrosylated proteins in Arabidopsis by nitrosoproteomic analysis reveals the involvement of S-nitrosylation in diverse signaling pathways.