southern blight
Sclerotium rolfsii Sacc.
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| Taxonomic Rank: Incertae sedis > Incertae sedis > Incertae sedis > Sclerotium |
| Common Name Synonym(s): Circular spot |
| Taxonomic Synonym(s): Athelia rolfsii (Curzi) C.C. Tu & Kimbr. [Teleomorph] |
| Category: Diseases: Vascular Wilts |
116 Records | View Thumbnails |
| Image | Descriptor | Description |
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| 1402046 | Symptoms | With this fungal disease, leaves of infected plants rapidly turn yellow, wilt, and die. The dried, brown leaves hang down the dying stalk. The root system remains healthy prior to the death of the plant. Infected plants are usually scattered singly through the field or occur in small groups. Symptoms may be confused with those of black shank. During warm, moist weather, the fungus produces a white cottony growth from the discolored stalk lesions. Discing of the pith similar to black shank may occur, but it is much lighter in color and not as well-organized. Infected stalks easily break at the stalk lesion. |
| 1402047 | Sign | The fungus produces small, round structures (sclerotia) on the surface of the stalk lesion. These are white at first, turning brown with maturity, and resemble mustard seed. |
| 1402048 | Symptoms | The base of the stalk shows a brown, sunken lesion or dead area, lighter in color than the stalk lesion caused by black shank. The dead area is stingy, and the outer layer of stalk often has a papery consistency. |
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| 1496351 | Sign | Southern stem blight on apple |
| 1496352 | Sign | Southern stem blight on apple |
| 1496355 | Symptoms | Southern blight on apple |
| 1496357 | Symptoms | Southern blight on apple |
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| 1525390 | Symptoms | Sclerotium rolfsii on Larkspur |
| 1525391 | Infestation | Sclerotium rolfsii on Larkspur |
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| 4824092 | Symptoms | Infected seedlings. |
| 4824093 | Symptoms | Infected seedlings. |
| 4824094 | Fruiting Bodies | At base of foliage. |
| 4824095 | Symptoms | Discolored foliage of infected seedlings. |
| 5077063 | Sign | Rotting of lower stem resulting in total collapse of the plant. Small orange and white sclerotia (round fruiting bodies) can sometimes be observed at the soil line in later stages.=org |
| 5077071 | Symptoms | Lower stem collapses. White mycelial growth and small tan to brown, round sclerotia can be observed. |
| 5077073 | Symptoms | Fungus causes soil to adhere to the carrot root. |
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| 5265045 | Sign | Sclerotium rolsii on container grown apple |
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| 5333056 | Sign | sclerotia formed in moist chamber Type is Laboratory |
| 5336052 | Sign | |
| 5356837 | Symptoms | Potato plant showing symptoms of stem rot, caused by infection with Sclerotium rolfsii. |
| 5357530 | Symptoms | A bean plant showing symptoms of the southern wilt disease caused by the fungus Sclerotium rolfsii in the field. |
| 5359712 | Symptoms | Base of the stem of a soybean plant in Thailand, showing symptoms of stem rot (Sclerotium rolfsii). |
| 5360371 | Culture | Cultures of the sclerotia of Athelia rolfsii (Sclerotium rolfsii), the causal fungus of beans southern blight, in the laboratory. |
| 5360385 | Sign | Bean plants with the sclerotia of Athelia rolfsii (Sclerotium rolfsii), the causal fungus of beans southern blight in the field. |
| 5369062 | Symptoms | Infected roots and lower stem showing tan, mustard seed-sized sclerotia. |
| 5369063 | Symptoms | Infected roots and lower stem showing mycelial fan at the upper edge of infection. |
| 5383177 | Symptoms | Roots |
| 5383178 | Symptoms | Roots |
| 5383180 | Culture | Sclertoia and mycelium on culture media Acid potato dextrose agar (APDA). Isolated from apple (Malus domestica) |
| 5383181 | Culture | Sclertoia and mycelium on culture media Acid potato dextrose agar (APDA). Isolated from apple (Malus domestica) |
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