Figure 4. These images show asexually produced spores. The organism is a Mucor sp. The tips of bread mold are the dark, spore-containing sporangia.
Ascomycetes include fungi that are used as food edible mushrooms and truffles , others that are common causes of food spoilage bread molds and plant pathogens , and still others that are human pathogens. Species in the genus Aspergillus are important causes of allergy and infection, and are useful in research and in the production of certain fermented alcoholic beverages such as Japanese sake. The fungus Aspergillus flavus , a contaminant of nuts and stored grains, produces an aflatoxin that is both a toxin and the most potent known natural carcinogen.
Penicillium produces the antibiotic penicillin. Many species of ascomycetes are medically important. An important respiratory pathogen is the dimorphic fungus Histoplasma capsulatum Figure 2 , which is associated with birds and bats in the Ohio and Mississippi river valleys. Candida albicans , the most common cause of vaginal and other yeast infections, is also an ascomycete fungus; it is a part of the normal microbiota of the skin, intestine, genital tract, and ear Figure 5.
Ascomycetes also cause plant diseases, including ergot infections, Dutch elm disease, and powdery mildews. Basidiomycetes are fungi that include rusts, stinkhorns, puffballs, and mushrooms.
Several species are of particular importance. Cryptococcus neoformans , a fungus commonly found as a yeast in the environment, can cause serious lung infections when inhaled by individuals with weakened immune systems. The edible meadow mushroom, Agricus campestris , is a basidiomycete, as is the poisonous mushroom Amanita phalloides , known as the death cap. But, septa are not present in hyphae of all fungi.
Therefore, based on the presence and absence of septa, hyphae have two types: septate hyphae and aseptate hyphae. Overview and Key Difference 2. What are Septate Hyphae 3. What are Aseptate Hyphae 4. Similarities Between Septate and Aseptate Hyphae 5. Septate hyphae are fungal mycelia that contain cross walls or septa inside the hyphae. Due to the presence of septa, there are separate nucleated cells in the septate hyphae. Septa are perforated. Hence, molecules, organelles and cytoplasms move between cellular compartments of septate hyphae.
These branches are hyphae, or filaments, of a mold called Penicillium. A mycelium may range in size from microscopic to very large. In fact, one of the largest living organisms on Earth is the mycelium of a single fungus. A small part of a similar fungus is pictured in Figure below. The giant fungus covers 8.
Some fungi become noticeable only when producing spores fruiting , either as mushrooms or molds. This fruiting body, known as the sporocarp , is a multicellular structure on which spore-producing structures form.
The fruiting body is part of the sexual phase of a fungal life cycle. Based in Wenatchee, Wash. She has written peer-reviewed articles in the "Journal of Wildlife Management," policy documents,and educational materials.
She was once charged by a grizzly bear while on the job. Non-Septate Hyphae. How Do Algae Reproduce? Parts of a Fungus. Are Palm Trees Monocots? What Are the Five Subdivisions of Kingdoms? The Structure of Algae. Five Types of Asexual Reproduction.
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