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Pollen-pistil interaction in Mauritia flexuosa: structural and cytological aspects provide insight into the reproductive success of a dioecious palm with supra-annual flowering in a semiarid environment.
Plant Biol (Stuttg)
January 2025
Laboratório de Ecologia Vegetal, Departamento de Biologia Geral, Universidade Estadual de Montes Claros, Montes Claros, Minas Gerais, Brazil.
The success of pollen-pistil interaction in Mauritia flexuosa (buriti), a palm adapted to the humid ecosystems, 'veredas', within the Cerrado, is influenced by intrinsic and environmental factors. Its supra-annual flowering, dioecy, and adverse climate conditions pose challenges for fertilization, therefore information on floral biology is essential. This study aimed to ascertain stigma receptivity, and elucidate structural, cytochemical, and ultrastructural aspects of the pollen-pistil relationship.
View Article and Find Full Text PDFDevelopmental studies of the sublingual and mandibular salivary glands in Japanese quails (Coturinx coturinx japonica).
BMC Vet Res
November 2024
Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt.
Article Synopsis
- The Japanese quail has been significant to humans since the 12th century, known for its high egg production, quality low-fat meat, and ease of management, making it valuable in both industry and research.
- A study focused on the development of the oropharyngeal salivary glands in Japanese quails, examining embryos and chicks at various ages using histological and electron microscopy techniques.
- Key findings included the early formation of sublingual and mandibular glands, which developed into mucous glands after hatching, playing important roles in food processing and moisture retention during feeding.
Innovative Biocompatible Blend Scaffold of Poly(hydroxybutyrate-co-hydroxyvalerate) and Poly(ε-caprolactone) for Bone Tissue Engineering: In Vitro and In Vivo Evaluation.
Polymers (Basel)
October 2024
Centro de Ciências Naturais e Humanas (CCNH), Universidade Federal do ABC (UFABC), São Bernardo do Campo 09606-070, Brazil.
This study evaluated the biocompatibility of dense and porous forms of Poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV), Poly(ε-caprolactone) (PCL), and their 75/25 blend for bone tissue engineering applications. The biomaterials were characterized morphologically using scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR), and the thickness and porosity of the scaffolds were determined. Functional assessments of mesenchymal stem cells (MSCs) included the MTT assay, alkaline phosphatase (ALP) production, and morphological and cytochemical analyses.
View Article and Find Full Text PDFMicromorphology and native extractive behaviour of wood powder.
Sci Rep
October 2024
Department of Forest Biomaterials and Technology/Wood Science, Swedish University of Agricultural Sciences, Uppsala, SE-756 51, Sweden.
Article Synopsis
- * This study examines how different milling methods and moisture levels in wood affect the microstructure and distribution of extractives in the wood powders.
- * Results indicate that wood powders from multi-blade shaft milling maintain a smoother and more intact structure, while hammer mill powders show rougher surfaces and more damage, affecting their potential use in future applications.
Dynamics of Hydrogen Peroxide Accumulation During Tip Growth of Infection Thread in Nodules and Cell Differentiation in Pea ( L.) Symbiotic Nodules.
Plants (Basel)
October 2024
Laboratory of Molecular and Cell Biology, All-Russia Research Institute for Agricultural Microbiology, 196608 Saint Petersburg, Russia.
Hydrogen peroxide (HO) in plants is produced in relatively large amounts and plays a universal role in plant defense and physiological responses, including the regulation of growth and development. In the -legume symbiosis, hydrogen peroxide plays an important signaling role throughout the development of this interaction. In the functioning nodule, HO has been shown to be involved in bacterial differentiation into the symbiotic form and in nodule senescence.
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