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These spores are asexual and are generally not as durable and environmentally persistent as, for instance, bacterial endospores or chlamydospores.Some medically significant pathogens, such as Coccidioides immitis, and Coccidioides posadasii, both causative agents of coccidioidomycosis (also known as San Joaquin Valley fever), are transmitted through airborne arthroconidia. [1]
The ring shape of dermatophyte lesions result from outward growth of the fungi. [3] The fungi spread in a centrifugal pattern in the stratum corneum, which is the outermost keratinized layer of the skin. [3] For nail infections, the growth initiates through the lateral or superficial nail plates, then continues throughout the nail. [3]
Ascomycetes, sac fungi. A phylum of fungi characterized by the presence of an ascus, a sac-like structure where ascospores are produced. The largest group of fungi. Includes cup fungi or Discomycetes; most dermatophyte s; the mycobiont part of most lichens; powdery mildews; and fungi that produce truffle s. [37] ascospore
Other fungi rely on alternative mechanisms for spore release, such as external mechanical forces, exemplified by puffballs. Attracting insects, such as flies, to fruiting structures, by virtue of their having lively colours and a putrid odour, for dispersal of fungal spores is yet another strategy, most prominently used by the stinkhorns .
Arthrosporella is a fungal genus in the family Tricholomataceae.It is a monotypic genus, containing the single species Arthrosporella ditopa, found in South America.The genus was described by mycologist Rolf Singer in 1970.
Conidia on conidiophores Chain of conidia of Alternaria Conidiomata of Cypress canker (probably Seiridium cardinale) erupting on a Thuja twig. A conidium (/ k ə ˈ n ɪ d i ə m, k oʊ-/ kə-NID-ee-əm, koh-; pl.: conidia), sometimes termed an asexual chlamydospore or chlamydoconidium (pl.: chlamydoconidia), [1] is an asexual, [2] non-motile spore of a fungus.
Gram stain of Candida albicans from a vaginal swab, showing hyphae, and chlamydospores, which are 2–4 μm in diameter.. A chlamydospore is the thick-walled large resting spore of several kinds of fungi, including Ascomycota such as Candida, [1] Basidiomycota such as Panus, [2] and various Mortierellales species. [3]
C. immitis, along with its relative C. posadasii, [3] is most commonly seen in the desert regions of the southwestern United States, including certain areas of Arizona, California, New Mexico, Nevada, Texas, and Utah; and in Central and South America in Argentina, Brazil, Colombia, Guatemala, Honduras, Mexico, Nicaragua, Paraguay, and Venezuela.