Monthly Archives: April 2020

Agaricales: Agarics & Boletes

Agaricales is an order of fungi in the class Agaricomycetes (phylum Basidiomycota, kingdom Fungi). It is one of the most diverse orders of the phylum Basidiomycota. Traditionally, agarics were classified based on the presence of gills (thin sheets of spore-bearing cells, or basidia) and mushroom-shaped fruiting bodies. Some other conspicuous …

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Uredinales: Life Cycle, Heteroecism & Biological Specializations

    Describe the uredinal and pycnial stages of Puccinia graminis-tritici.   Disease: Rust. Pathogen: Puccinia graminis-tritici. Host: Wheat.   Alternate host: To complete life cycle, two hosts are needed. Collateral host: If a fungus can grow on many hosts.   Life cycle of Puccinia graminis-tritici.   Fungi belonging to …

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Clavicipitales: Ergot by Claviceps Purpurea

  Class: Ascomycetes Sub-class: Hymenomycetidae I, Hymenomycetidae II. Order: Clavicipitales Family: Clavicipitaceae Genus: Claviceps   Vegetative structure Hyphae septate, well branched, pale brown or brown. Blood clotting. Ergotism disease (in rye).   Economic importance The fungus causes ergot of rye. Ergotism disease of domestic animal. Alkaloid- child breathing Ergotism Ergotamine- …

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Erysiphales: Genera Causing Powdery Mildews

  Phylum: Ascomycota Class: Ascomycetes Order: Erysiphales Family: Erysiphaceae Genus: Erysiphe   Characteristics Mostly obligate parasite grow in host plants. Two types of haustoria present that is knob like and digitately branched. Both homothallic and heterothallic. Asexual reproduction by conidiophore. Sexual reproduction is followed by gametangial contact. Ascocarp is cleistothecium. …

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Eurotiales: Perfect & Imperfect Stages of Aspergilli & Penicilli

  Aspergillus   Why do some sexual stages lack active antheridium? What are the conditions favouring sexual reproduction?     Good to know The mycelial or ascospore stages are the ones that overwinter in the life cycle.     Phylum: Ascomycota (Filamentous ascomyecetes) Class: Ascomycetes Order: Eurotiales Family: Trichocomaceae Genus: …

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Endomycetales with Emphasis on Saccharomycetaceae

Yeast Yeast is a unicellular ascomycete that reproduces by budding or fission. Saccharomycetales, often designated as true yeasts do not produce ascogenous hyphae and ascocarps. So there is no dikaryotic phase in life cycle and karyogamy occurs immediately after meiosis. The asci are usually thin walled.   The term yeast-like …

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Asexual & Sexual Fruit Bodies of Ascomycetes

Asexual fruiting structure of Ascomycetes (also seen in members of class Deuteromycetes) E.g. Colletotrichum E.g. Macrophomina phaseolina E.g. Fusarium sp. E.g. Arthrobotrys sp. Conidiospores borne on conidiophores. E.g. Alternaria   Acervulus An acervulus (pl. acervuli) is a small asexual fruiting body that erupts through the epidermis of host plants parasitised …

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Basidiomycetes: Characteristics & Classification

The fungi comprising the phylum Basidiomycota commonly are known as basidiomycetes. They include forms commonly known as mushrooms, boletes, puffballs, earthstars, stinkhorns, birds-nest fungi, jelly fungi, bracket or shelf fungi, and rust and smut fungi.   Salient features Both parasite and saprophytic. Some of the groups are mycorrhizal. Basidiomycetes produce …

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Ascomycetes: Characteristics & Classification

  Good to know The imperfect stage of Penicillium in which it passes most part of its life cycle is sclerotium. One celled ascomycetes is Saccharomyces cerevisae. One celled lower fungi is Synchytrium endobioticum. Ascomyectes- Powdery mildew. Basidiomycetes- Usually no sexual reproduction. Deuteromycetes- Imperfect fungi. Imperfect stage- Asexual reproduction…anamorphic fungi…mitosporic …

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Economic Botany

This article is written using many tables and about hundred of pictures of plants. As, adding individual photos in this article would increase the gallery size of this website which might turn ‘Plantlet’ slow, we are uploading the MS Word file here so that you can download it and read …

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