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Puccinia Dioicae
''Puccinia dioicae'' is a plant pathogen that causes rust on goldenrod. It is common in Iceland, where it infects ''Taraxacum'' species and ''Carex capillaris''. Pycniospores and aeciospores are found on ''Taraxacum'' sp., and uredospores and teliospore Teliospore (sometimes called teleutospore) is the thick-walled resting spore of some fungi ( rusts and smuts), from which the basidium arises. Development They develop in '' telia'' (sing. ''telium'' or ''teliosorus''). The telial host is the p ...s are found on ''Carex capillaris''. See also * List of ''Puccinia'' species References External links Index FungorumUSDA ARS Fungal Database Fungal plant pathogens and diseases dioicae Fungi described in 1817 {{fungus-plant-disease-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taraxacum Officinale
''Taraxacum officinale'', the dandelion or common dandelion, is a flowering herbaceous perennial plant of the dandelion genus in the family Asteraceae (syn. Compositae). The common dandelion is well known for its yellow flower heads that turn into round balls of many silver-tufted fruits that disperse in the wind. These balls are usually called "clocks" in both British and American English. The name "blowball" is also used. The common dandelion grows in temperate regions of the world in areas with moist soils. It is most often considered a weed, especially in lawns and along roadsides, but the leaves, flowers, and roots are sometimes used in herbal medicine and as food. Description ''Taraxacum officinale'' grows from (generally unbranched) taproots and produces several hollow, leafless flower stems that are typically tall, but sometimes up to tall. The stems can be tinted purplish, they are upright or lax, and produce flower heads that are held as tall or taller than the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant Pathogen
Plant pathology (also phytopathology) is the scientific study of diseases in plants caused by pathogens (infectious organisms) and environmental conditions (physiological factors). Organisms that cause infectious disease include fungi, oomycetes, bacteria, viruses, viroids, virus-like organisms, phytoplasmas, protozoa, nematodes and parasitic plants. Not included are ectoparasites like insects, mites, vertebrate, or other pests that affect plant health by eating plant tissues. Plant pathology also involves the study of pathogen identification, disease etiology, disease cycles, economic impact, plant disease epidemiology, plant disease resistance, how plant diseases affect humans and animals, pathosystem genetics, and management of plant diseases. Overview Control of plant diseases is crucial to the reliable production of food, and it provides significant problems in agricultural use of land, water, fuel and other inputs. Plants in both natural and cultivated populat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rust (fungus)
Rusts are plant diseases caused by pathogenic fungi of the order Pucciniales (previously known as Uredinales). An estimated 168 rust genera and approximately 7,000 species, more than half of which belong to the genus ''Puccinia'', are currently accepted. Rust fungi are highly specialized plant pathogens with several unique features. Taken as a group, rust fungi are diverse and affect many kinds of plants. However, each species has a very narrow range of hosts and cannot be transmitted to non-host plants. In addition, most rust fungi cannot be grown easily in pure culture. A single species of rust fungi may be able to infect two different plant hosts in different stages of its life cycle, and may produce up to five morphologically and cytologically distinct spore-producing structures viz., spermogonia, aecia, uredinia, telia, and basidia in successive stages of reproduction. Each spore type is very host specific, and can typically infect only one kind of plant. Rust fungi are o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goldenrod
Goldenrod is a common name for many species of flowering plants in the sunflower family, Asteraceae, commonly in reference to the genus ''Solidago''. Several genera, such as ''Euthamia'', were formerly included in a broader concept of the genus ''Solidago''. Some authors treat ''Oligoneuron'', the flat-topped goldenrods, as a separate genus than ''Solidago'', while others consider it a section: ''Solidago'' sect. ''Ptarmicoidei''. Goldenrods can be used as a sustainable method to enrich soil with nitrogen. With an increase of nitrogen levels, there can then be an increase of vegetative growth. Plants known as goldenrods include: *''Bigelowia'' spp., rayless goldenrods, 2 species native to the Southeastern United States *''Cuniculotinus gramineus'', Panamint rock goldenrod *''Euthamia'' spp., flat-topped goldenrods or grass-leaved goldenrods, 5 species native to North America *''Gundlachia triantha'', Trans-Pecos desert goldenrod *'' Lorandersonia microcephala'', small-headed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iceland
Iceland ( is, Ísland; ) is a Nordic island country in the North Atlantic Ocean and in the Arctic Ocean. Iceland is the most sparsely populated country in Europe. Iceland's capital and largest city is Reykjavík, which (along with its surrounding areas) is home to over 65% of the population. Iceland is the biggest part of the Mid-Atlantic Ridge that rises above sea level, and its central volcanic plateau is erupting almost constantly. The interior consists of a plateau characterised by sand and lava fields, mountains, and glaciers, and many glacial rivers flow to the sea through the lowlands. Iceland is warmed by the Gulf Stream and has a temperate climate, despite a high latitude just outside the Arctic Circle. Its high latitude and marine influence keep summers chilly, and most of its islands have a polar climate. According to the ancient manuscript , the settlement of Iceland began in 874 AD when the Norwegian chieftain Ingólfr Arnarson became the first p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taraxacum
''Taraxacum'' () is a large genus of flowering plants in the family Asteraceae, which consists of species commonly known as dandelions. The scientific and hobby study of the genus is known as taraxacology. The genus is native to Eurasia and North America, but the two most commonplace species worldwide, '' T. officinale'' (the common dandelion) and '' T. erythrospermum'' (the red-seeded dandelion), were introduced from Europe into North America, where they now propagate as wildflowers. Both species are edible in their entirety. The common name ''dandelion'' ( , from French , meaning 'lion's tooth') is also given to specific members of the genus. Like other members of the family Asteraceae, they have very small flowers collected together into a composite flower head. Each single flower in a head is called a ''floret''. In part due to their abundance, along with being a generalist species, dandelions are one of the most vital early spring nectar sources for a wide host ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carex Capillaris
''Carex capillaris'', the hair-like sedge, is a species of sedge found in North America and northern Eurasia including Greenland. '' Carex tiogana'', from northern California, is sometimes included in ''Carex capillaris''. Two subspecies are accepted: * ''Carex capillaris subsp. capillaris'' * ''Carex capillaris subsp. fuscidula'' (V.I.Krecz. ex T.V.Egorova) Á.Löve & D.Löve Ecology ''Carex capillaris'' is a known host to species of fungi, including '' Anthracoidea capillaris'', ''Didymella proximella ''Didymella proximella'' is a species of fungi belonging to the family Didymellaceae The Didymellaceae are a family of fungi in the order Pleosporales. The have a world-wide distribution. Recent phylogenetic examination of some of the larger ...'', '' Lophodermium caricinum'' and '' Puccinia dioicae''. References External links * capillaris Flora of North America Plants described in 1753 Taxa named by Carl Linnaeus {{Carex-stub Flora of Greenland ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pycniospore
Pycniospores are a type of spore in fungi. They are produced in special cup-like structures called pycnia or pynidia. Almost all fungi reproduce asexually with the production of spores. Spores may be colorless, green, yellow, orange, red, brown or black. Other types of spore ;Sporangiospores Sporangiospores (spore:spore, angion:sac) are spores formed inside the sporangium which is a spore sac. ;Conidia Conidia (singular: conidium) are spores produced at the tip of special branches called conidiophores. ;Oidia Oidia (singular: oidium). In several fungi, the hyphae is often divided into a large number of short pieces by transverse walls. Each piece is able to germinate into a new body. These pieces are called oidia (small egg). ;Chlamydospores Chlamydospore A chlamydospore is the thick-walled large resting spore of several kinds of fungi, including Ascomycota such as '' Candida'', Basidiomycota such as ''Panus'', and various Mortierellales species. It is the life-stage whi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aeciospore
Aeciospores are one of several different types of spores formed by Rusts. They each have two nuclei and are typically seen in chain-like formations in the aecium. References Fungal morphology and anatomy {{mycology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uredospore
Urediniospores (or uredospores) are thin-walled spores produced by the uredium, a stage in the life-cycle of rusts. Development ''Urediniospores'' develop in the uredium, generally on a leaf's under surface. Morphology *Urediniospores usually have two dikaryote nuclei within one cell. In mass they are usually pale brown in contrast to teliospores which are generally dark brown. See also * Chlamydospore *Urediniomycetes The Pucciniomycetes (formerly known as the Urediniomycetes) are a class (biology), class of fungi in the Pucciniomycotina subdivision of the Basidiomycota. The class contains 5 order (biology), orders, 21 family (biology), families, 190 genus, ge ... * Pycniospore * Aeciospore * Teliospore * Ustilaginomycetes * Rust fungus: Spores References *C.J. Alexopolous, Charles W. Mims, M. Blackwell, ''Introductory Mycology, 4th ed.'' (John Wiley and Sons, Hoboken NJ, 2004) Germ cells Fungal morphology and anatomy Mycology {{Basidiomycota-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teliospore
Teliospore (sometimes called teleutospore) is the thick-walled resting spore of some fungi ( rusts and smuts), from which the basidium arises. Development They develop in '' telia'' (sing. ''telium'' or ''teliosorus''). The telial host is the primary host in heteroecious rusts. The aecial host is the alternate host (look for pycnia and aecia). These terms apply when two hosts are required by a heteroecious rust fungus to complete its life cycle. Morphology Teliospores consist of one, two or more dikaryote cells. Teliospores are often dark-coloured and thick-walled, especially in species where they overwinter (acting as chlamydospores). Two-celled teliospores formerly defined the genus ''Puccinia''. Here the wall is particularly thick at the tip of the terminal cell which extends into a beak in some species. Teliospores consist of dikaryote cells. As the teliospore cells germinate, the nuclei undergo karyogamy and thereafter meiosis, giving rise to a four-celled basidiu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Puccinia Species
This is an incomplete list of species in the fungal genus ''Puccinia''. Members of this genus are pathogens on all major cereal crop species except rice, and some cause large economic losses. According to the ''Dictionary of the Fungi'' (10th edition, 2008), the widespread genus contains about 4000 species. *'' Puccinia abrotani'' *'' Puccinia abrupta'' *'' Puccinia acetosae'' *'' Puccinia achilleae'' *'' Puccinia adjuncta'' *'' Puccinia adoxae'' *'' Puccinia aegopodii'' *'' Puccinia agrophila'' *'' Puccinia akiraho'' *'' Puccinia albescens'' *'' Puccinia alboclava'' *'' Puccinia albulensis'' *'' Puccinia aletridis'' *''Puccinia allii'' *'' Puccinia amphigena'' *'' Puccinia andropogonis'' *'' Puccinia anemones-virginianae'' *''Puccinia angelicae'' *''Puccinia angustata'' *''Puccinia anisotomes'' *''Puccinia annularis'' *''Puccinia antenori'' *''Puccinia anthemidis'' *''Puccinia antirrhini'' *''Puccinia apii'' *''Puccinia arachidis'' *''Puccinia arenariae'' *'' Puccinia areolata' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
