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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 PDFEnhanced pathogen identification among patients with clinically suspected meningitis.
S Afr J Infect Dis
December 2024
Division of Medical Microbiology, Department of Pathology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.
Background: Delayed or incorrect treatment of meningitis may result in adverse patient outcomes. However, laboratory testing in resource-limited settings is often limited to conventional diagnostic methods. We explored the utility of syndromic molecular assays for diagnosis.
View Article and Find Full Text PDFThe International System for Serous Fluid Cytopathology (TIS) survey in preparation for TIS 2.0.
J Am Soc Cytopathol
December 2024
Department of Cellular Pathology, Guy's & St. Thomas' NHS Foundation Trust, London, UK.
Introduction: The International System for Serous Fluid Cytopathology (TIS) has gained acceptance and has led to literature validating original concepts and suggesting refinements. In preparation for the second edition of TIS, editors generated a survey to solicit experience with and opinions about TIS.
Materials And Methods: An online survey available from March 8 to June 15, 2024, included 56 questions, offered in 7 languages, related to the practice of serous fluid cytopathology.
Cellular and biochemical alterations induced by diesel oil in the brown alga Sargassum cymosum var. stenophyllum cultured in vitro.
Chemosphere
January 2025
Plant Morphogenesis and Biochemistry Laboratory, Federal University of Santa Catarina, P. O. Box 476, 88049-900, Florianopolis, SC, Brazil. Electronic address:
The effect of the in vitro acute exposure to diesel oil (0.001%, 0.01%, 0.
View Article and Find Full Text PDFDynamic changes of heterogeneous cell wall macromolecules in differentiating conifer xylem using cytochemical localization.
Int J Biol Macromol
January 2025
Department of Wood Anatomy and Utilization, Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China; Wood Specimen Resource Center (WOODPEDIA) of National Forestry and Grassland Administration, Beijing 100091, China. Electronic address:
Article Synopsis
- Understanding the changes in cell wall components during xylem differentiation is crucial for grasping the structure of wood, especially at the secondary cell wall layer level.
- In the study of Pinus bungeana, it was found that crystalline cellulose and glucomannan were deposited before xylan and lignin, with lignification starting in the primary cell wall corners as the S layer developed.
- Immunofluorescence results showed that glucomannan was deposited earlier than xylan, and while pectins were concentrated in the primary walls, they decreased as tracheid walls differentiated, with ray cells lagging behind axial tracheids in their development.
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