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Puccinia Melanocephala
''Puccinia melanocephala'' is a fungus and plant pathogen, it is the causal agent of sugarcane rust. It was originally found on the leaves of a species of ''Arundinaria'' (cane) in Assam, India. This pathogen was found to also affect multiple species of sugarcane, including ''Saccharum spontaneum'' or wild sugarcane, ''Saccharum robustum'', and the most commonly cultivated species ''Saccharum officinarum''. ''Puccinia melanocephala'' can also infect other member of the family Poaceae, including some species of bamboo such as ''Bambusa vulgaris''. The first symptoms of sugarcane rust are elongate, yellow-colored leaf spots, roughly 1mm to 4mm in length. The leaf spots gradually become bigger and turn a reddish-brown color. The uredia develop underneath the epidermis where the leaf spots are present. When the uredia become big enough, they break through the epidermis to form the characteristic rust pustules from which uredospores are borne. These pustules can coalesce, resulting in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant Pathology
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 fungus, fungi, oomycetes, bacterium, bacteria, plant virus, viruses, viroids, virus-like organisms, phytoplasmas, protozoa, nematodes and parasitic plants. Not included are ectoparasites like insects, mites, vertebrate, or other Plant defense against herbivory, pests that affect plant health by eating Plant tissue, 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, wat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Appresoria
An appressorium is a specialized cell typical of many fungal plant pathogens that is used to infect host plants. It is a flattened, hyphal "pressing" organ, from which a minute infection peg grows and enters the host, using turgor pressure capable of punching through even Mylar. Following spore attachment and germination on the host surface, the emerging germ tube perceives physical cues such as surface hardness and hydrophobicity, as well as chemical signals including wax monomers that trigger appressorium formation. Appressorium formation begins when the tip of the germ tube ceases polar growth, hooks, and begins to swell. The contents of the spore are then mobilized into the developing appressorium, a septum develops at the neck of the appressorium, and the germ tube and spore collapse and die. As the appressorium matures, it becomes firmly attached to the plant surface and a dense layer of melanin is laid down in the appressorium wall, except across a pore at the plant interface ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fungi Described In 1907
A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from the other eukaryotic kingdoms, which by one traditional classification include Plantae, Animalia, Protozoa, and Chromista. A characteristic that places fungi in a different kingdom from plants, bacteria, and some protists is chitin in their cell walls. Fungi, like animals, are heterotrophs; they acquire their food by absorbing dissolved molecules, typically by secreting digestive enzymes into their environment. Fungi do not photosynthesize. Growth is their means of mobility, except for spores (a few of which are flagellated), which may travel through the air or water. Fungi are the principal decomposers in ecological systems. These and other differences place fungi in a single group of related organisms, named the ''Eumycota'' (''true fungi' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puccinia
''Puccinia'' is a genus of fungi. All species in this genus are obligate plant pathogens and are known as rusts. The genus contains about 4000 species. The genus name of ''Puccinia'' is in honour of Tommaso Puccini (died 1735), who was an Italian doctor and botanist who taught Anatomy at Hospital of Santa Maria Nuova in Florence. The genus was circumscribed by Pier Antonio Micheli in Nov. Pl. Gen. on page 213 in 1729. Taxonomy Examples of ''Puccinia'' rusts and the diseases they cause: * '' Puccinia asparagi'' - Asparagus rust * ''Puccinia graminis'' - Stem rust, also known as black rust * '' Puccinia horiana'' - Chrysanthemum white rust * '' Puccinia mariae-wilsoniae'' - Spring beauty rust * '' Puccinia poarum'' - Coltsfoot rust gall * ''Puccinia psidii'' - Guava rust or eucalyptus rust * '' Puccinia recondita'' - Brown rust * ''Puccinia sessilis'' - Arum rust and Ransoms rust * '' Puccinia striiformis'' - Stripe rust, also known as yellow rust * ''Puccinia triticina'' - Wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sugarcane Diseases
This article is a list of diseases of sugarcane (''Saccharum'' spp. hybrids). Bacterial diseases Fungal diseases Miscellaneous diseases and disorders Nematodes, parasitic Viral diseases Protozoan diseases Phytoplasma diseases Phytoplasmas were previously known as 'mycoplasma-like organisms' (MLOs).Rao, G. P. and Ford, R. E. (2000) Vectors of virus and Phytoplasma diseases of Sugarcane: An Overview. In: Sugarcane Pathology, Vol. III. Virus and Phytoplasma diseases, G.P. Rao, R.E. Ford, M. Tosic and D.S. Teakle (Eds) Science Publishers, Hamshere, USA, Pg: 265-314. Unsure causal agent diseases * Ramu stunt disease The Ramu stunt disease is a disease of the sugarcane widespread throughout Papua New Guinea, but not detected in Australia. ''Eumetopina flavipes'', the island sugarcane planthopper, is a species of planthopper present throughout South East Asia ..., a disease widespread throughout Papua New Guinea, but not detected in Australia References ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fungal Plant Pathogens And Diseases
A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from the other eukaryotic kingdoms, which by one traditional classification include Plantae, Animalia, Protozoa, and Chromista. A characteristic that places fungi in a different kingdom from plants, bacteria, and some protists is chitin in their cell walls. Fungi, like animals, are heterotrophs; they acquire their food by absorbing dissolved molecules, typically by secreting digestive enzymes into their environment. Fungi do not photosynthesize. Growth is their means of mobility, except for spores (a few of which are flagellated), which may travel through the air or water. Fungi are the principal decomposers in ecological systems. These and other differences place fungi in a single group of related organisms, named the ''Eumycota'' (''true f ... [...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] |
Biological Weapon
A biological agent (also called bio-agent, biological threat agent, biological warfare agent, biological weapon, or bioweapon) is a bacterium, virus, protozoan, parasite, fungus, or toxin that can be used purposefully as a weapon in bioterrorism or biological warfare (BW). In addition to these living or replicating pathogens, toxins and biotoxins are also included among the bio-agents. More than 1,200 different kinds of potentially weaponizable bio-agents have been described and studied to date. Biological agents have the ability to adversely affect human health in a variety of ways, ranging from relatively mild allergic reactions to serious medical conditions, including serious injury, as well as serious or permanent disability or even death. Many of these organisms are ubiquitous in the natural environment where they are found in water, soil, plants, or animals. Bio-agents may be amenable to "weaponization" to render them easier to deploy or disseminate. Genetic modification ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sugarcane
Sugarcane or sugar cane is a species of (often hybrid) tall, Perennial plant, perennial grass (in the genus ''Saccharum'', tribe Andropogoneae) that is used for sugar Sugar industry, production. The plants are 2–6 m (6–20 ft) tall with stout, jointed, fibrous stalks that are rich in sucrose, which accumulates in the Plant stem, stalk internodes. Sugarcanes belong to the grass family, Poaceae, an economically important flowering plant family that includes maize, wheat, rice, and sorghum, and many forage crops. It is native to the warm temperate and tropical regions of India, Southeast Asia, and New Guinea. The plant is also grown for biofuel production, especially in Brazil, as the canes can be used directly to produce ethyl alcohol (ethanol). Grown in tropical and subtropical regions, sugarcane is the world's largest crop by production quantity, totaling 1.9 billion tonnes in 2020, with Brazil accounting for 40% of the world total. Sugarcane accounts for 79% of sug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autoecious
A heteroecious parasite is one that requires at least two hosts. The ''primary host'' is the host in which the parasite spends its adult life; the other is the ''secondary host''. Both hosts are required for the parasite to complete its life cycle. This can be contrasted with an autoecious parasite which can complete its life cycle on a single host species. Many rust fungi have heteroecious life cycles: In parasitology, heteroxeny, or heteroxenous development, is a synonymous term that characterizes a parasite whose development involves several hosts. Fungal examples * ''Gymnosporangium'' (Cedar-apple rust): the juniper is the primary ( telial) host and the apple, pear or hawthorn is the secondary (aecial) host. * ''Cronartium ribicola'' (White pine blister rust): the primary host are white pines, and currants the secondary. * ''Hemileia vastatrix'' (Coffee rust): the primary host is coffee plant, and the alternate host is unknown. * ''Puccinia graminis'' (Stem rust): the pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sugarcane
Sugarcane or sugar cane is a species of (often hybrid) tall, Perennial plant, perennial grass (in the genus ''Saccharum'', tribe Andropogoneae) that is used for sugar Sugar industry, production. The plants are 2–6 m (6–20 ft) tall with stout, jointed, fibrous stalks that are rich in sucrose, which accumulates in the Plant stem, stalk internodes. Sugarcanes belong to the grass family, Poaceae, an economically important flowering plant family that includes maize, wheat, rice, and sorghum, and many forage crops. It is native to the warm temperate and tropical regions of India, Southeast Asia, and New Guinea. The plant is also grown for biofuel production, especially in Brazil, as the canes can be used directly to produce ethyl alcohol (ethanol). Grown in tropical and subtropical regions, sugarcane is the world's largest crop by production quantity, totaling 1.9 billion tonnes in 2020, with Brazil accounting for 40% of the world total. Sugarcane accounts for 79% of sug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bambusa Vulgaris
''Bambusa vulgaris'', common bamboo, is an open-clump type bamboo species. It is native to Indochina and to the province of Yunnan in southern China, but it has been widely cultivated in many other places and has become naturalized in several regions.Dieter Ohrnberger, ''The bamboos of the world'', pages 279–280, Elsevier, 1999, Among bamboo species, it is one of the largest and most easily recognized.''Biology Pamphlets'' (Volume 741), page 15, University of California, 1895D. Louppe, A.A. Oteng-Amoako and M. Brink, ''Timbers'' (vol. 1), pages 100–103, PROTA, 2008, Description ''Bambusa vulgaris'' forms moderately loose clumps and has no thorns.Flora of North America Editorial Committee, ''Magnoliophyta: Commelinidae'', page 22, Oxford University Press, 2007, It has lemon-yellow culms (stems) with green stripes and dark green leaves. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
