Sporopollenin
View article: Multi-substrate kinetic framework and wool-immobilised Pseudomonas fluorescens lipase (WPFL) for solvent-free biocatalysis of terpene esters from rose geranium oil
Multi-substrate kinetic framework and wool-immobilised Pseudomonas fluorescens lipase (WPFL) for solvent-free biocatalysis of terpene esters from rose geranium oil Open
View article: Pollen-inspired biopolymer-based multifunctional films
Pollen-inspired biopolymer-based multifunctional films Open
Naturally evolved materials and structures inspire next-generation sustainable manufacturing workflows and the development of intelligent, multifunctional, high-performance materials. However, integrating compositional and structural eleme…
View article: All-aqueous emulsions stabilized by derivatized sporopollenin exine capsules
All-aqueous emulsions stabilized by derivatized sporopollenin exine capsules Open
Sporopollenin Exine Capsules (SpECs) were studied as particle stabilizers in all-aqueous emulsions of polyethylene glycol (PEG) and dextran (Dex) (8 % PEG: 6 % Dex). To investigate the role of particle interactions on stabilization mechani…
View article: Identity Transitions of Tapetum Phases: Insights into Vesicular Dynamics and in Mortem Support During Pollen Maturation
Identity Transitions of Tapetum Phases: Insights into Vesicular Dynamics and in Mortem Support During Pollen Maturation Open
Flower development progresses through twelve distinct stages, meticulously regulated to optimize plant reproductive success. At stage 5, the initiation of anther development occurs, which is further categorized into 14 stages divided into …
View article: Development of natural sporopollenin microcapsules: from bee pollen to versatile biomaterials
Development of natural sporopollenin microcapsules: from bee pollen to versatile biomaterials Open
The outer layer of the pollen grain, which plays a crucial role in the continuity of terrestrial plant life, has received significant attention due to its robustness, chemical inertness, and biocompatible structure made of sporopollenin. H…
View article: Phosphorylated Sporopollenin as a Sustainable Catalyst for Selective 5-Hydroxymethylfurfural Formation in Water: Insights into Phosphate Functionalization, and Mechanism
Phosphorylated Sporopollenin as a Sustainable Catalyst for Selective 5-Hydroxymethylfurfural Formation in Water: Insights into Phosphate Functionalization, and Mechanism Open
Metal-free Brønsted acid catalysts in water often lead to undesirable side reactions, complicating the synthesis of 5-hydroxymethylfurfural (5-HMF). As a result, organic heterogeneous catalysts with high selectivity for 5-HMF are highly so…
View article: OsLAP3/OsSTRL2, encoding a rice strictosidine synthase, is required for anther cuticle formation and pollen exine patterning in rice
OsLAP3/OsSTRL2, encoding a rice strictosidine synthase, is required for anther cuticle formation and pollen exine patterning in rice Open
The formation of the anther wall and the development of pollen processes, central to rice fertility and yield, are highly dependent on the synthesis and accumulation of lipid polymers. Although several regulatory factors related to lipid b…
View article: Sporopollenin-based material for prevention of postoperative adhesions: a murine study
Sporopollenin-based material for prevention of postoperative adhesions: a murine study Open
The ABD has the potential to improve postsurgical peritoneal adhesions compared to Interceed and has comparable effectiveness compared to Seprafilm. The ABD may be a valuable option to reduce surgical failure. Further studies in human subj…
View article: The Chemistry of Sporopollenin Ektexine and Endexine Layers Isolated from Sunflower Pollen through an Ionic Liquid-Mediated Process
The Chemistry of Sporopollenin Ektexine and Endexine Layers Isolated from Sunflower Pollen through an Ionic Liquid-Mediated Process Open
Sporopollenin is a plant polymer present in the exine of the pollen grains that comprises two layers: the endexine and the ektexine. It possesses remarkable mechanical, thermal, and chemical stability and is also highly recalcitrant to hyd…
View article: A land plant‐specific <scp>VPS</scp> 13 mediates polarized vesicle trafficking in germinating pollen
A land plant‐specific <span>VPS</span> 13 mediates polarized vesicle trafficking in germinating pollen Open
Summary Pollen has an extraordinary ability to convert from a dry state to an extremely rapidly growing state. During pollination, pollen receives water and Ca 2+ from the contacting pistil, which will be a directional cue for pollen tube …
View article: Fe-N catalyst derived from and supported on Lycopodium clavatum sporopollenin exine capsules for the oxygen reduction reaction
Fe-N catalyst derived from and supported on Lycopodium clavatum sporopollenin exine capsules for the oxygen reduction reaction Open
View article: Phosphorylated Sporopollenin as a Sustainable Catalyst for Selective 5-Hydroxymethylfurfural Formation in Water: Insights into Phosphate Functionalization, Kinetics, and Mechanism
Phosphorylated Sporopollenin as a Sustainable Catalyst for Selective 5-Hydroxymethylfurfural Formation in Water: Insights into Phosphate Functionalization, Kinetics, and Mechanism Open
Metal-free Brønsted acid catalysts in water often lead to undesirable side reactions, complicating the synthesis of 5-hydroxymethylfurfural (5-HMF). As a result, organic heterogeneous catalysts with high selectivity for 5-HMF are highly so…
View article: Ultrafast and one-step coating sporopollenin exine capsules with metal-phenolic networks for bio-composite applications
Ultrafast and one-step coating sporopollenin exine capsules with metal-phenolic networks for bio-composite applications Open
Sporopollenin exine capsules (SECs), extracted from plant pollen grains, are becoming increasingly popular as natural microcapsules for a broad spectrum of bio-composite applications due to their plentiful supply, resilience to chemicals a…
View article: The polyketide pathway in sporopollenin biosynthesis is specific to land plants (Embryophyta)
The polyketide pathway in sporopollenin biosynthesis is specific to land plants (Embryophyta) Open
Background and Aims Sporopollenin (SP) is a complex biopolymer in the outer wall of spores and pollen and provides protection from environmental stresses. Its extraordinary chemical resistance, especially to acetolysis, was widely used to …
View article: Zygospore formation in Zygnematophyceae predates several land plant traits
Zygospore formation in Zygnematophyceae predates several land plant traits Open
Recent research on a special type of sexual reproduction and zygospore formation in Zygnematophyceae, the sister group of land plants, is summarized. Within this group, gamete fusion occurs by conjugation. Zygospore development in Mougeoti…
View article: NST3 induces ectopic transdifferentiation, forming secondary walls with diverse patterns and composition in <i>Arabidopsis thaliana</i>
NST3 induces ectopic transdifferentiation, forming secondary walls with diverse patterns and composition in <i>Arabidopsis thaliana</i> Open
Background and Aims The master transcription factor NAC SECONDARY WALL THICKENING PROMOTING FACTOR3 (NST3), also known as SND1, plays a pivotal role in regulating secondary cell wall (SCW) development in interfascicular and xylary fibres i…
View article: Non-separated microspores 1 controls male meiotic callose deposition at the cell plate in rice
Non-separated microspores 1 controls male meiotic callose deposition at the cell plate in rice Open
In flowering plants, callose (β-1,3-glucan) plays a vital role in pollen development, especially in the separation and development of microspores. However, the molecular mechanism of callose deposition during rice pollen development remain…
View article: Oxidative burst causes loss of tapetal Ubisch body and male sterility in rice
Oxidative burst causes loss of tapetal Ubisch body and male sterility in rice Open
The anther is a critical male organ for plant reproduction in flowering plants. In rice (Oryza sativa L.), anthers consist of four somatic cell layers named epidermis, endothecium, middle layer and tapetum, which surround the reproductive …
View article: Phosphorylated Sporopollenin as a Sustainable Catalyst for Selective 5-Hydroxymethylfurfural Formation in Water: Insights into Phosphate Functionalization, Kinetics, and Mechanism
Phosphorylated Sporopollenin as a Sustainable Catalyst for Selective 5-Hydroxymethylfurfural Formation in Water: Insights into Phosphate Functionalization, Kinetics, and Mechanism Open
Metal-free Brønsted acid catalysts in water are known to facilitate undesired side reactions such as polymers and formic acid synthesis, making it challenging to synthesize 5-hydroxymethylfurfural (5-HMF) from C6 sugars. Therefore, water-t…
View article: Phosphorylated Sporopollenin as a Sustainable Catalyst for Selective 5-Hydroxymethylfurfural Production in Water: Insights into Phos-phate Functionalization, Kinetics, and Mechanism
Phosphorylated Sporopollenin as a Sustainable Catalyst for Selective 5-Hydroxymethylfurfural Production in Water: Insights into Phos-phate Functionalization, Kinetics, and Mechanism Open
Metal-free Brønsted acid catalysts in water are known to facilitate undesired side reactions such as polymers and formic acid synthesis, making it challenging to synthesize 5-hydroxymethylfurfural (5-HMF) from C6 sugars. Therefore, water-t…
View article: Morphological and Ultrastructural Features of Selected Epidendroideae Pollen Dispersal Units and New Insights into Their Chemical Nature
Morphological and Ultrastructural Features of Selected Epidendroideae Pollen Dispersal Units and New Insights into Their Chemical Nature Open
Orchidaceae display enormous diversity in their flower morphology, which is particularly evident in their pollen dispersal units (pollinia, pollinaria). The packaging of pollen by elastoviscin leads to a great diversity of these morphologi…
View article: Sporopollenin Capsules as Biomimetic Templates for the Synthesis of Hydroxyapatite and β-TCP
Sporopollenin Capsules as Biomimetic Templates for the Synthesis of Hydroxyapatite and β-TCP Open
Pollen grains, with their resilient sporopollenin exine and defined morphologies, have been explored as bio-templates for the synthesis of calcium phosphate minerals, particularly hydroxyapatite (HAp) and β-tricalcium phosphate (TCP). Vari…
View article: Confirmation that Antevsia zeilleri microsporangiate organs associated with latest Triassic Lepidopteris ottonis (Peltaspermales) leaves produced Cycadopites-Monosulcites-Chasmatosporites- and Ricciisporites-type monosulcate pollen
Confirmation that Antevsia zeilleri microsporangiate organs associated with latest Triassic Lepidopteris ottonis (Peltaspermales) leaves produced Cycadopites-Monosulcites-Chasmatosporites- and Ricciisporites-type monosulcate pollen Open
View article: Takakia possesses a key marker of embryophyte sporopollenin
Takakia possesses a key marker of embryophyte sporopollenin Open
The enigmatic moss, Takakia lepidozioides, possesses a particular type III polyketide synthase, ASCL (Anther-Specific Chalcone synthase-Like), that is an identifying marker for genuine sporopollenin in the walls of embryophyte spore…
View article: <i>Takakia</i>possesses a key marker of embryophyte sporopollenin
<i>Takakia</i>possesses a key marker of embryophyte sporopollenin Open
The enigmatic moss, Takakia lepidozioides , possesses a particular type III polyketide synthase, ASCL (Anther-Specific Chalcone synthase-Like), that is an identifying marker for genuine sporopollenin in the walls of embryophyte spores and …
View article: First Cu-Nanostar as Sustainable Catalyst Realized through Synergistic Effects of Bowl-shaped Features and Surface Activation of Sporopollenin Exine
First Cu-Nanostar as Sustainable Catalyst Realized through Synergistic Effects of Bowl-shaped Features and Surface Activation of Sporopollenin Exine Open
Recently, nanostar-shaped structures, including gold nanostars (NS), have drawn much attention for their potential use in surface-enhanced Raman spectroscopy (SERS) and catalysis. Yet, very few studies have been conducted on Cu-Au hybrid N…
View article: Stimulus triggered release of actives from composite microcapsules based on sporopollenin from <i>Lycopodium clavatum</i>
Stimulus triggered release of actives from composite microcapsules based on sporopollenin from <i>Lycopodium clavatum</i> Open
We have demonstrated three different types of stimulus triggered release of a model drug from sporopollenin from Lycopodium clavatum based on pH sensitive, thermosensitive and near infrared light-sensitive polymer composition.
View article: Ultrafast and One-Step Coating Sporopollenin Exine Capsules with Metal-Phenolic Networks Promoting Cell Adhesion
Ultrafast and One-Step Coating Sporopollenin Exine Capsules with Metal-Phenolic Networks Promoting Cell Adhesion Open
View article: Morphology and wall ultrastructure of a unique megaspore, Flabellisporites zhaotongensis Sui, McLoughlin et Feng sp. nov., from the upper Permian of Southwest China
Morphology and wall ultrastructure of a unique megaspore, Flabellisporites zhaotongensis Sui, McLoughlin et Feng sp. nov., from the upper Permian of Southwest China Open
View article: Uncovering a phylogenetic signal in plant biopolymer chemistry: a comparison of sporopollenin isolation approaches for use in palynological research
Uncovering a phylogenetic signal in plant biopolymer chemistry: a comparison of sporopollenin isolation approaches for use in palynological research Open
Sporomorphs (pollen and spores) are a mainstay of research into past vegetation, and increasingly sporomorph chemistry is being used as a palaeoecological tool. To make extant sporomorphs directly comparable to fossil specimens, fresh mate…