What is the classification of Alternaria?
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What is the classification of Alternaria?
DothideomycetesAlternaria / ClassDothideomycetes is the largest and most diverse class of ascomycete fungi. It comprises 11 orders 90 families, 1300 genera and over 19,000 known species. Traditionally, most of its members were included in the loculoascomycetes, which is not part of the currently accepted classification. Wikipedia
What is Alternaria Alternata in humans?
Alternaria is an ubiquitous fungus that is considered to be a nonpathogenic contaminant of the clinical specimen unless isolated by repeated culture and correlated with clinical findings. However, it is a rare cause of human infection, especially in immunocompromised patients but even more rarely in healthy hosts [1].
What is the scientific name of Alternaria?
AlternariaAlternaria / Scientific name
Alternaria alternata is a fungus which has been recorded causing leaf spot and other diseases on over 380 host species of plant. It is an opportunistic pathogen on numerous hosts causing leaf spots, rots and blights on many plant parts. Alternaria alternata. Scientific classification.
What phylum does Alternaria Alternata belong to?
phylum Ascomycota
Alternaria is a large genus that belongs to phylum Ascomycota (Sac fungi).
Which disease is caused by Alternaria?
Spores of Alternaria are common in house dust and the fungus is probably more significant as the chief fungal cause of hay fever than as a plant pathogen.
What are the characteristics of Alternaria?
A pale or dark brown conidiophore that may be straight or flexuous in appearance. Brownish conidia with a short beak or no beak at all. Conidia with a smooth surface (or a little warty)
Which type of spores are reported in Alternaria?
In the case of Alternaria, spores are easily recognizable due to the “club” shape [21]. We also counted Ulocladium spp. spores due to the most recent classification, which includes them in the Alternaria genus [39].
Is Alternaria Alternata pathogenic?
Alternaria mycotoxins Alternaria alternata is one of the most common pathogens found in a variety of natural food products including fruits and vegetables, cereal plants, seeds, and other plant organs, which is similar to fruits and vegetables that may be consumed as natural whole products.
Can plant bacteria infect humans?
Plant pathogenic bacteria are potential reservoirs of human infection, which may have important implications for the emergence of infectious diseases.
Which disease is caused by Alternaria and write its symptoms?
Alternaria alternata – Causes early blight of potato, Leaf spot disease in Withania somnifera and can infest many other plants. It also causes upper respiratory infections in AIDS patients, asthma in people with sensitivity, and has been implicated in chronic rhinosinusitis.
Can a plant virus affect humans?
It is currently considered that phytoviruses only infect plants and therefore, plant viruses cannot cause disease in humans.
What is the main symptom of Alternaria?
The most common symptom of Alternaria diseases is yellow, dark brown to black circular leaf spots with target like, concentric rings. Lesion centers may fall out, giving the leaf spots a shot-hole appearance. Individual spots coalesce into large necrotic areas and leaf drop can occur.
Can plant fungus spread to humans?
In addition to illnesses caused by fungal toxins, hospital case studies showed that plant-associated fungi were capable of causing diseases through direct human infection (Sexton and Howlett, 2006; Bebber and Gurr, 2015).
How does plant diseases affect human life?
Plant diseases are well known to reduce the food available to humans by ultimately interfering with crop yields. This can result in inadequate food to humans or lead to starvation and death in the worst cases.
Can plant viruses jump to humans?
It is currently accepted that a strict separation exists between plant and vertebrate viruses regarding their host range and pathogenicity, and plant viruses are believed to infect only plants. Accordingly, plant viruses are not considered to present potential pathogenicity to humans and other vertebrates.
How many species of Alternaria are there?
Alternaria species are one of the most common fungi encountered by humans. Estimates of the number of species range from approximately 100 to several hundred, although specific data are difficult to assess due to the proliferation of nomenclatural synonyms of dubious taxonomic validity.
What is Alternaria tenuissima?
Alternaria tenuissima is a cosmopolitan species, common on an array of various plant hosts in many countries spanning a range of environmental conditions. It often colonizes blueberries, tomatoes, grapevine, and strawberries. It has also been found on several cereal grain species. Optimal growth occurs between 25–30 °C (77–86 °F).
Is Alternaria tenuissima a mycotoxin?
Alternaria tenuissima is a saprophyte, living on dead matter. It produces the mycotoxins alternariol (AOH), alternariol methyl ester (AME), altenuene (ALT), altertoxin (ATX), and tenuazonic acid (TA), that are variously involved pathogenicity and interference competition. Mycotoxins of this species are optimally produced at 25 °C.
What is the Alternaria Genomes database?
The Alternaria genomes database: a comprehensive resource for a fungal genus comprised of saprophytes, plant pathogens, and allergenic species. BMC Genomics. 2015 Mar 25;16:239.
