
Genome-edited rice deficient in two 4CL genes display diverse lignin alterations (Plant Physiol)
Plant Science Research WeeklyLignin is one of the most important end-products of the cinnamate/monolignol pathway and it is abundant in the secondary cell wall of vascular plants. In grasses, lignins are derived from monolignols, p-hydroxycinnamates, and a flavonoid tricin. In the proposed cinnamate/monolignol pathway, 4-COUMARATE:COENZYME…

Xylan-based nanocompartments orchestrate plant vessel wall patterning (Nature Plants)
Plant Science Research WeeklyXylem vessels have a distinct secondary cell wall (SCW) formation, where the metaxylem stage contains a characteristic pit pattern. The hemicellulose xylan is an important component of the SCW, functioning as a crosslinking polymer that coats cellulose microfibrils and interacts with other SCW components.…

Fungal exopolysaccharide regulates plant-microbe interaction (Plant Cell)
Plant Science Research WeeklyThe studies on the apoplastic interactions of plants and fungi often focus on the fungal cell-wall, but recent studies indicate various plant colonizing fungi also have an exopolysaccharide (EPS) layer outside their cell wall. Chandrasekar et al. observed that the composition of this fungal EPS is distinct…

Real-time conversion of tissue-scale mechanical forces into an interdigitated growth pattern (Nature Plants)
Plant Science Research WeeklyIn many plants, epidermal pavement cells lock together through interdigitating lobes, much like the pieces of a jigsaw puzzle. These cells start out as regular squarish cells with straight walls, which then bow out and curve. Here, Belteton et al. investigate how lobes form in cotyledon pavement cells.…

Molecular insights into the complex mechanics of plant epidermal cell walls (Science)
Plant Science Research WeeklyPrimary plant cell walls are made up of three types of polysaccharides: cellulose, hemicellulose, and pectin, the orientations and interactions of which provide the cell wall with its properties. Here, Zhang et al. examined the outer wall of onion epidermal cells through atomic-force microscopy, stress-strain…

How a Mangrove tree can help to improve the salt tolerance of Arabidopsis and Rice
Blog, Plant Physiology, Plant Physiology: News and Views, ResearchAffiliation: University of Melbourne
ORCiD: 0000-0001-5092-6168
email: [email protected]
Mangrove trees live and thrive in intertidal zones, where they are regularly inundated with salt water. To survive such harsh environmental conditions, they have evolved several features to improve…

The fat of the land: cuticle formation in terrestrial plants
Blog, Plant Physiology, Plant Physiology: News and Views, ResearchMadeleine Seale
Department of Plant Sciences, University of Oxford, South Parks Road, Oxford, OX1 3RB, United Kingdom
[email protected]
ORCID: 0000-0002-8924-3943
In a world surrounded by a vast expanse of gaseous air, water is constantly evaporating from aqueous sources…

A grass-specific cellulose-xylan interaction dominates in sorghum secondary cell walls (Nature Communications)
Plant Science Research Weekly
The cell walls of plants are intricate structures. Their complexity is due to multiple biochemical components and interactions, but while many of the components have been identified, their interactions have yet to be fully elucidated. A major component of the cell wall is cellulose, of which multiple…

The Lure of Lignin: Deciphering High-value Lignin Formation in Seed Coats
Blog, Research, The Plant Cell, The Plant Cell: In BriefLignin is a major functional component of plant secondary cell walls and the second most abundant biological polymer on Earth after cellulose. Understanding the biosynthesis of lignin has huge practical implications because lignin is a major by-product of processes that use cellulosic biomass for industrial…
