title: Intra- and interspecific diversity of ultrastructural markers in Scedosporium.
abstract: Ultrastructural features of conidia, lateral walls of aerial and submerged hyphal cells, and of septal pore apparatus of Scedosporium apiospermum, S. boydii, Pseudallescheria angusta and Scedosporium aurantiacum were studied. Submerged hyphal cells possessed a thick extracellular matrix. Crystalline satellites accessory to the septal pore apparatus were revealed. Fundamental ultrastructural features appeared to be heterogeneous at low taxonomic levels. The closely interrelated members of the S. apiospermum complex showed quantitative ultrastructural variability, but the unambiguously different species S. aurantiacum deviated qualitatively by markers of conidial wall structure, Woronin bodies morphology and presence/absence of crystalline satellites of the septal pore apparatus.
authors.affiliation: Kashkin Research Institute of Medical Mycology, I.I. Mechnikov North-Western State Medical University, Saint Petersburg 194291, Russia. Electronic address: amalya_53@inbox.ru.
authors.forename: Amaliya A
authors.initials: AA
authors.lastname: Stepanova
authors.affiliation: CBS-KNAW Fungal Biodiversity Centre, P.O. Box 85167, 3508 AD Utrecht, The Netherlands.
authors.forename: G Sybren
authors.initials: GS
authors.lastname: de Hoog
authors.affiliation: Kashkin Research Institute of Medical Mycology, I.I. Mechnikov North-Western State Medical University, Saint Petersburg 194291, Russia.
authors.forename: Nataliya V
authors.initials: NV
authors.lastname: Vasilyeva
mesh_terms: D044822:Biodiversity; D021681:Scedosporium / Q000145:classification / Q000302:isolation & purification / Q000648:ultrastructure*; D013172:Spores, Fungal / Q000145:classification / Q000302:isolation & purification / Q000648:ultrastructure*
keywords: Conidial wall; Crystalline satellites; Pseudallescheria; Scedosporium; Septal pore apparatus; Woronin bodies