How do you identify a Fusarium?
Fusarium species were identified according to their macroscopic characteristics, which included colony morphology, color, the growth rate of molds, the microscopic characteristics of their hyphae, spores and conidia, and the relationships among these characteristics in specimens grown on PDA.
What is the classification of Fusarium?
Sordariomycetes
Fusarium/Class
What are the colony morphology traits of Fusarium species?
Table 1
| Morphological characterization | F. solani | |
|---|---|---|
| Colony coloura | Pale to brown, brown-greenish to white-greenish | White-creamy to white-greyish |
| Pigmentationb | Pale brown yellowish brown with dark brown zonation | Colourless, white-creamy with dark brown zonation |
| Growth rate (cm)c | 3.3 ± 0.2 | 3.5 ± 0.2 |
| Microscopic characteristic |
What kind of fungus is Fusarium?
Fusarium is a filamentous fungus that is widely distributed in plants and soils. The genus contains over 20 species, of which 14 are significant to crop producers because of the diseases they cause. Most Fusarium species are common in tropical and sub-tropical regions with some found in temperate zones.
What are the symptoms of Fusarium wilt?
Symptoms include yellowing, stunting, and death of seedlings and yellowing and stunting of older plants. Infected plants wilt readily, lower leaves yellow and dry, the xylem tissues turn brown, and the plant may die. In the early stages of disease, the roots are not rotted.
How can you tell Fusarium oxysporum?
Molecular identification of Fusarium isolates was done by amplifying the internal transcribed spacer (ITS) region of the conserved ribosomal DNA using primers ITS1 and ITS4. All the ITS sequences were compared for gaps and similarity.
Is Fusarium a bacteria or fungi?
Fusarium is a large cosmopolitan genus of imperfect fungi and is of interest primarily because numerous species are important plant pathogens (Nelson et al. 1981), produce of a wide range of secondary metabolites, and/or cause opportunistic mycoses in humans (Austwick 1982; Michniewicz 1989; Vesonder 1989).
What is the common name of Fusarium?
Although their predominant role in native soils may be as harmless or even beneficial plant endophytes or soil saprophytes, many strains within the F….
| Fusarium oxysporum | |
|---|---|
| Species: | F. oxysporum |
| Binomial name | |
| Fusarium oxysporum Schlecht. emend. Snyder & Hansen |
What shape is commonly associated with the description of the Macroconidia of Fusarium spp?
The typical Fusarium conidium (macroconidium) is fusiform, multi-celled by transverse septa, with a characteristic foot-shaped basal cell and a pointed to whip-like apical cell. In addition, some species may also produce minor conidia (microconidia).
What is the habitat of Fusarium?
Habitat of Fusarium spp Commonly and abundantly found in soil, they seem to thrive in fertile cultivated soil and therefore they are classified as soilborne fungi where they closely associate with plant roots saprophytically or parasitically.
What color is Fusarium?
Fusarium colonies are usually pale or brightly colored (depending on the species) and may have a cottony aerial mycelium. Their color varies from whitish to yellow, brownish, pink or reddish.
What causes Fusarium infection?
Nucci M, Anaissie E. Cutaneous infection by Fusarium species in healthy and immunocompromised hosts: implications for diagnosis and management. Clin Infect Dis 2002; 35:909. Anaissie EJ, Kuchar RT, Rex JH, et al.
Which is the slow growing species of Fusarium?
The only slow-growing species is Fusarium dimerum. From the front, the color of the colony may be white, cream, tan, salmon, cinnamon, yellow, red, violet, pink, or purple. From the reverse, it may be colorless, tan, red, dark purple, or brown.
How many species of Fusarium are there in the world?
Species. The genus Fusarium currently contains over 20 species. The most common of these are Fusarium solani, Fusarium oxysporum, and Fusarium chlamydosporum [ 531 ]. Please refer to the table of synonyms for a much more complete list of the currently recognized Fusarium spp.
What kind of pathogens are produced by Fusarium?
Fusarium. The main toxins produced by these Fusarium species are fumonisins and trichothecenes. Despite most species apparently being harmless, some Fusarium species and subspecific groups are among the most important fungal pathogens of plants and animals.
What kind of color does Fusarium solani have?
When present, it may be observed in cream to tan or orange color, except for Fusarium solani, which gives rise to blue-green or blue sporodochia [ 531, 2202 ]. Hyaline septate hyphae, conidiophores, phialides, macroconidia, and microconidia are observed microscopically.