Polysaccharides and Plant Cell Walls

POLYGALACTURONASES REGULATED BY AUXIN facilitate root cell elongation in Arabidopsis thaliana via pectin remodeling

This study identifies auxin-regulated polygalacturonases (PGRAs) that modulate pectin remodeling and root cell elongation in Arabidopsis thaliana.

Modulation of the GT Family 47 clade B gene affects arabinan deposition in elaters of Marchantia polymorpha

This paper investigates the role of GT47B genes in arabinan deposition in Marchantia polymorpha by analyzing mutants and overexpression lines, revealing reduced 1,5-L-arabinan in Mparadl2 mutants and challenges in purifying GT47B proteins.

CarboTag: a modular approach for live and functional imaging of plant cell walls

CarboTag enables live functional imaging of plant cell walls by providing modular probes for multiplexing and quantifying key cell wall properties.

Outer epidermal edges mediate cell-cell adhesion for tissue integrity in plants

The paper challenges the traditional view of cell-cell adhesion in plants by showing that outer epidermal edges, not the middle lamella, are critical for tissue integrity through mechanical stress analysis and structural characterization.

Xylan modifications in Populus that lead to increased growth

This study shows that altering xylan during secondary wall formation in Populus increases growth, with changes in gene expression, hormones, and metabolism.

Time-resolved tracking of cellulose biosynthesis and microfibril network assembly during cell wall regeneration in live Arabidopsis protoplasts

This paper visualizes cellulose biosynthesis and microfibril network assembly in live Arabidopsis protoplasts using time-lapse imaging, revealing dynamics of fibril synthesis and network formation.

Unraveling the Molecular mechanism of Polysaccharide Lyases for Efficient Alginate Degradation

This study elucidates the molecular mechanism of polysaccharide lyases involved in alginate degradation using structural and computational methods.

Molecular Insights into Cell Wall Architecture and Xylan-Bound Cellulose Fibrils in the Wheat Straw

This study presents a model of xylan-bound cellulose microfibril architecture in wheat straw using ssNMR and X-ray scattering, revealing 18 glucan chains with xylan binding and implications for biomass recalcitrance.

Gelatinous fibers develop asymmetrically for posture support of bends and coils in common bean vine

This study investigates the developmental anatomy of gelatinous fibers in common bean stems, showing they form asymmetrically to support posture after bends and coils, rather than driving movement.

Glucomannan engineering highlights the role of galactosyl modification in fine-tuning cellulose-glucomannan interaction in Arabidopsis cell walls

This study shows that galactosyl modification on glucomannans in Arabidopsis cell walls is fine-tuned by MAGTs, affecting cellulose interaction and cell wall architecture.

High-throughput glycan array screening reveals rhamnogalacturonan-I as a ligand for Arabidopsis leucine-rich repeat receptor kinases

Cell wall composition in relation to photosynthesis across land plants' phylogeny: crops as outliers

This study examines cell wall composition's role in photosynthesis across land plants, finding that pectin content correlates with mesophyll conductance, but crops show deviations from this pattern.

Seagrass arabinogalactan-proteins: Are they important for adaptation to the marine environment?

The paper investigates whether seagrass arabinogalactan-proteins show convergent glycan features across families, finding environmental factors influence their structure more than phylogeny.

The reducing end of cell wall oligosaccharides is critical for DAMP activity in Arabidopsis thaliana and can be exploited by oligosaccharide oxidases in the scavenging of phenolic radicals.

This study shows that the reducing end of cell wall oligosaccharides is critical for their DAMP activity and can be oxidized by OSOXs to inactivate them, with implications for plant-microbe interactions and green technologies.

The role of MYB46 in modulating polysaccharide acetylation by mediating the transcriptional regulation of cell wall-related genes in Arabidopsis

This study investigates how MYB46 regulates polysaccharide acetylation in Arabidopsis by controlling cell wall-related genes, revealing its role in acetylation homeostasis and identifying novel gene targets.

Immunolocalization of fasciclin-like arabinogalactan proteins in the G-layers of poplar tension wood fibers

The paper uses immunohistochemistry and western blot to study FLA localization in poplar tension wood G-layers, finding FLAs present in early stages but not accessible in mature fibers.

Structural Characterization and Functional Assessment of the Alpha-Expansin Precursor in Oryza sativa

This study characterizes the structural and functional properties of the alpha-expansin precursor in rice, highlighting its evolutionary conservation and role in cell wall dynamics.

Rhamnogalacturonan-II dimerization deficiency impairs the coordination between growth and adhesion maintenance in plants

This study identifies RG-II dimerization as critical for cell adhesion in plants and shows its connection to cell wall integrity sensors and brassinosteroid signaling.

Modification of xylan in secondary walls alters cell wall biosynthesis and wood formation programs

This study modifies xylan in secondary walls of hybrid aspen to reduce recalcitrance, resulting in altered growth patterns and improved enzymatic saccharification.

Convergent Acquisition of Glucomannan β-galactosyltransferases in Asterids and Rosids

This study identifies a convergent evolution of MBGT genes in asterids and rosids, showing different evolutionary pathways for similar biochemical functions.

Evolutionary history of the main extracellular matrix polysaccharides in brown algae

The paper investigates the evolutionary origins of extracellular matrix polysaccharides in brown algae using genomic data and comparative analysis.

Cellulose synthesis in Arabidopsis by heterologous expression of lower plants CESA proteins

This study shows that lower plant CESA proteins can synthesize cellulose in Arabidopsis secondary cell walls, with moss CESA proteins functioning independently but producing less crystalline cellulose.

The longitudinal growth of the embryo of the kelp Saccharina depends on actin filaments that control the formation of an alginate corset in the cell wall

The paper shows that actin filaments control alginate distribution in kelp embryos, forming a corset that restricts growth and establishes the apico-basal axis.

Structurally diverse calloses/β-1,3-glucans in plant cell wall microdomains

The paper identifies structurally diverse callose/β-1,3-glucans in plant cell wall microdomains and reveals their interactions with xyloglucan.

Galacturonic acid oxidation: a radical way to stick together

This study identifies galacturonic acid and its oxidized form, galactaric acid, as key monomers regulating cell adhesion through extensin crosslinking in plant cell walls.

Antagonistic functions of CTL1 and SUH1 mediate cell wall assembly in Arabidopsis

This study identifies SUH1 as a genetic suppressor of CTL1 mutations in Arabidopsis, revealing their antagonistic roles in cell wall assembly through cellulose regulation.

Spatial consistency of cell growth direction during organ morphogenesis requires CELLULOSE-SYNTHASE INTERACTIVE1

The paper investigates the role of CSI1 in sepal morphogenesis, finding that it ensures spatial consistency of cell growth direction despite altered cellulose microfibril alignment in mutants.

Building artificial plant cell wall on lipid bilayer by assembling polysaccharides and engineered proteins

Neuroprotective, antioxidant and antiproliferative activity of grapefruit IntegroPectin on SH-SY5Y cells

This paper tests grapefruit IntegroPectin on SH-SY5Y cells, showing its neuroprotective, antioxidant, and antiproliferative effects.

Maize Brittle Stalk2-Like3, encoding a COBRA protein, functions in cell wall formation and carbohydrate partitioning

This study identifies BK2L3, a COBRA family gene, as essential for cell wall formation and carbohydrate partitioning in maize, linking cellulose deposition to phloem function and plant growth.