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Featured Application: This study on aluminum phosphate nanoparticles (AlPO4NPs) synthesized through green methods has significant implications for advancing nanomaterial synthesis with sustainable practices. By utilizing phytates extracted from Quercus suber somatic embryos, the green synthesis approach not only provides a natural precursor for nanoparticle formation but also emphasizes the environmental benefits of using plant-derived materials. The synthesized aluminum phosphate nanoplates, characterized by their unique optical and structural properties, show promising potential applications. This research paves the way for further innovations in nanotechnology and environmental biotechnology, highlighting the role of sustainable methods in the production of high-value nanomaterials. This study presents a novel green synthesis method for aluminum phosphate (AlPO4) nanoplates using extracts from Quercus suber somatic embryos. Traditionally, metallic nanoparticles are synthesized using harmful chemical reagents and solvents, but our approach leverages bioactive compounds, such as phytic acid (IP6) from plant extracts, offering a more sustainable alternative. We observed a high phosphate content of 23.6 μMol PO43−/mg dry weight (DW) in the extracts, which is significantly higher than in other Quercus species. Characterization through UV–VIS spectroscopy and XRD confirmed the formation of complex crystal nanoplates, where anisotropic aluminum phosphate with a triclinic crystal structure coexists with monoclinic structures, both forms of aluminum phosphate tridymite. Electron microscopy (TEM and SEM) revealed the hierarchical organization of these nanoplates, distinguishing them from the more commonly observed spherical nanoparticles. Fourier-transform infrared (FTIR) spectroscopy further validated the incorporation of phytic acid into the nanoplate structure. This innovative method not only advances sustainable nanomaterial synthesis but also demonstrates the potential for unique optical and structural properties in aluminum phosphate nanoplates, paving the way for future applications in specialized fields. [ABSTRACT FROM AUTHOR]

This study investigates the enhanced production of key therapeutic metabolites (ellagic acid, serotonin, and chlorogenic acid) in response to abiotic stress in in vitro cultures of Quercus suber somatic embryos. Findings indicate significant increases in metabolite levels under various stress conditions, highlighting the potential for commercial-scale production of these compounds, known for their antioxidant, anticancer, and anti-COVID-19 properties. Under osmotic/saline stress, ellagic acid production significantly increased, representing an 80% increase compared to control conditions. In embryos exposed to different stressors, serotonin accumulation showed a six-fold increase under osmotic/saline stress. Although the elicitors used did not increase chlorogenic acid levels, exploring alternative stress types may enhance its production. This research paves the way for sustainable, large-scale production of health-beneficial metabolites, addressing global health challenges and promoting resource sustainability. [ABSTRACT FROM AUTHOR]

Nanopriming, a technique that involves treating seeds with nanoparticles, is gaining attention for enhancing seed germination and seedling growth. This study explored the effects of silver nanoparticles (AgNPs), synthesized using Ascorbic acid, Caffeic acid, and Gallic acid, on cucumber seedling development. The nanoparticles, characterized by spherical morphology and distinct optical properties, showed varying effects based on the type and concentration of the reducing agents used. AgNP treatments generally led to higher germination rates and improved shoot and root growth compared to controls. Biochemical analyses revealed that these treatments influenced plant physiology, affecting reactive oxygen species (ROS) production, oxidative stress markers, and the content of amino acids, phenolic compounds, flavonoids, and soluble sugars. Specifically, certain AgNP treatments reduced oxidative stress, while others increased oxidative damage. Additionally, variations in free amino acids and phenolic and flavonoid contents were noted, suggesting complex interactions between nanoparticles and plant biochemical pathways. These findings highlight the potential of nanopriming in agriculture and underscore the need for further research to optimize nanoparticle formulations for different plant species. [ABSTRACT FROM AUTHOR]

This study aims to evaluate the biocontrol potential of Meyerozyma guilliermondii (CECT13190), an endophytic yeast, and its role in mitigating the adverse effects of abiotic and biotic stress in cucumber plants. The relevance of this study lies in addressing the threat of Fusarium wilt, a major fungal disease that impacts cucumber crop productivity, as well as the exacerbation of food scarcity caused by climate change-induced abiotic stress factors such as high temperatures and drought. The study was conducted in a greenhouse environment where Cucumis sativus seedlings were exposed to biotic (F. oxysporum inoculation) and abiotic stress conditions (heat and water deficit). The impact of M. guilliermondii on treated plants' physiology, growth, development, and flowering was assessed. The study confirmed the biocontrol activity of M. guilliermondii against F. oxysporum and highlighted its positive effects as a plant growth promoter. It enhanced overall plant health, activated natural defense mechanisms against F. oxysporum, and alleviated the detrimental impacts of abiotic stress. Notably, M. guilliermondii also induced early flowering in cucumber plants. This research underscores the potential of M. guilliermondii as a biocontrol agent for managing Fusarium wilt, enhancing stress tolerance, promoting early flowering, and offering promising prospects for sustainable crop production amidst fungal diseases and climate change-induced stressors. The findings emphasize the importance of utilizing M. guilliermondii to improve cucumber crop productivity and address food scarcity challenges. [ABSTRACT FROM AUTHOR]