Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Functionally similar to the tight junctions present in animal guts, plant roots have evolved a lignified Casparian strip as an extracellular diffusion barrier in the endodermis to seal the root apoplast and maintain nutrient homeostasis. How this diffusion barrier is structured has been partially defined, but its lignin polymerization and assembly steps remain elusive. Here, we characterize a family of dirigent proteins (DPs) essential for both the localized polymerization of lignin required for Casparian strip biogenesis in the cell wall and for attachment of the strip to the plasma membrane to seal the apoplast. We reveal a Casparian strip lignification mechanism that requires cooperation between DPs and the Schengen pathway. Furthermore, we demonstrate that DPs directly mediate lignin polymerization as part of this mechanism.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1126/science.adi5032 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Physicochemical, polymeric and microbial modifications of wood toward advanced functional applications: a review.
Chem Soc Rev
September 2025
Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China.
As concern for environmental sustainability continues to grow, wood, as a renewable resource and a composite of natural polymers (cellulose, hemicellulose, and lignin), has garnered increasing research attention. Traditional wood may have certain limitations in specific applications, such as being susceptible to moisture and biological degradation, as well as shortcomings in strength and durability. Therefore, wood modification has become a crucial strategy to enhance its performance and broaden its range of applications.
View Article and Find Full Text PDFLignin-intercalated WS with synergistic adsorption for efficiency lead removal.
Bioresour Technol
September 2025
School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China; Zibo Engineering Research Center for Bio-based New Materials, Zibo 255000, China. Electronic address:
Tungsten disulfide (WS), a two-dimensional adsorbent material, has garnered great attention in removing lead ions (Pb) from water due to their extensive exposed adsorption sites. However, WS nanosheets inevitably agglomerated and stacked during the preparation and adsorption process, leading to reduced adsorption efficiency. Current method of enhancing WS dispersion is mainly blending with synthetic polymers, but these synthetic polymers themselves do not possess adsorption properties, resulting adsorption effect enhancement poorly.
View Article and Find Full Text PDFMicrobial Enzymes for Biomass Conversion.
Annu Rev Microbiol
September 2025
3Department of Biology, Faculty of Philosophy, Sciences and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
Plant biomass has emerged as a cornerstone of the global bioenergy landscape because of its abundance and cost-effectiveness. The cell wall of plant biomass is an intricate network of cellulose, hemicellulose, and lignin. The hydrolysis of cellulose and hemicellulose by holoenzymes converts these polymers into monosaccharides and paves the way for the production of bioethanol and other bio-based products.
View Article and Find Full Text PDFReactivity of -Hydroxyphenyl Units in Enzymatic Co-Oxidative Coupling of -Coumaryl and Coniferyl Alcohols.
J Agric Food Chem
September 2025
Institute of Agriculture, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan.
The -hydroxyphenyl (H) unit is an aromatic structure found in lignin, particularly abundant in compression wood and grass, and is derived from the incorporation of -coumaryl alcohol (-CMA). Although the structural and biosynthetic aspects of lignin have been extensively studied, the polymerization reactivity of H-unit during lignification remains poorly understood. In this study, horseradish peroxidase (HRP)-catalyzed homo- and co-oxidative coupling reactions (initial stage of enzymatic dehydrogenative polymerization) with -CMA and/or coniferyl alcohol (CA) were performed to investigate monolignol consumption, dilignol formation, and their potential involvement in subsequent polymerization.
View Article and Find Full Text PDFDual-functionalized lignin as a sustainable modifier for high-performance phenol-formaldehyde adhesives in plywood production.
RSC Adv
September 2025
Molecular Chemistry, Materials and Catalysis Laboratory, Faculty of Sciences and Techniques (FST-BM), University of Sultan Moulay Slimane (USMS) Béni-Mellal 23000 Morocco
Biopolymers derived from natural sources are sustainable, non-toxic, and biodegradable, making them attractive alternatives to fossil-based polymers. Among these, lignin has garnered significant attention due to its potential in adhesive applications. In this study, lignin was extracted from redwood ( L.
View Article and Find Full Text PDF