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Statements

Subject Item
dbr:Collar_rot
rdfs:label
Collar rot
rdfs:comment
Collar rot is a symptomatically described disease that is usually caused by any one of various fungal and oomycete plant pathogens. It is present where the pathogen causes a lesion localized at or about the collet between the stem and the root. The lesions develop around the stem eventually forming a "collar". Observationally, collar rot grades into "basal stem rot", and with some pathogens is the first phase of "basal stem rot" often followed by "root rot". Collar rot is most often observed in seedings grown in infected soil. The pathogens that cause collar rot may be species or genera specific. But generalist pathogens such as Athelia rolfsii (aka Sclerotium rolfsii) are known to attack over 200 different species. While bacteria caused collar rot is not common, trees infected with Fire b
dcterms:subject
dbc:Water_mould_plant_pathogens_and_diseases dbc:Fungal_plant_pathogens_and_diseases dbc:Crop_diseases dbc:Tree_diseases dbc:Eudicot_diseases
dbo:wikiPageID
44472381
dbo:wikiPageRevisionID
1123926222
dbo:wikiPageWikiLink
dbr:Oomycete dbr:Sclerotinia_sclerotiorum dbr:Tobacco dbr:Diplodia_pinastri dbr:Fungal dbr:Elephant_foot_yam dbr:Athelia_rolfsii dbr:Tomato dbr:China_aster dbr:Gloxinia_(genus) dbr:Eggplant dbr:Dogwood dbr:Zinnia dbr:Lasiodiplodia_theobromae dbr:Chinese_evergreen dbr:Sweet_potato dbr:Aglaonema dbc:Fungal_plant_pathogens_and_diseases dbr:Sclerotium_rolfsii dbr:Alternaria dbc:Water_mould_plant_pathogens_and_diseases dbr:Sclerotium dbr:Papaya dbr:Carnation dbr:Phytophthora_cryptogea dbr:Aspergillus_niger dbc:Crop_diseases dbr:Mycelium dbr:Fusarium_subgutinans dbr:Phytophthora dbr:Alternaria_dianthi n14:causal dbr:Phytophthora_cactorum dbr:Coffea dbr:Phytophthora_cinnamomi dbr:Cinchona dbr:Chili_pepper dbc:Eudicot_diseases dbr:Arachis_hypogaea dbr:Rootstock_blight dbr:Alternaria_solani dbr:Gibberella_stilboides dbr:Calonectria dbr:Tagetes n14:collet dbr:Maize dbr:Rhododendron n14:symptomatically dbr:Stem_rot dbr:Dianthus_caryophyllus dbr:Phytophthora_quininea dbc:Tree_diseases dbr:Sunflower dbr:Fire_blight dbr:Pine
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yago-res:Collar_rot freebase:m.012bzv8_ n16:2MDrJ wikidata:Q24975345
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dbo:abstract
Collar rot is a symptomatically described disease that is usually caused by any one of various fungal and oomycete plant pathogens. It is present where the pathogen causes a lesion localized at or about the collet between the stem and the root. The lesions develop around the stem eventually forming a "collar". Observationally, collar rot grades into "basal stem rot", and with some pathogens is the first phase of "basal stem rot" often followed by "root rot". Collar rot is most often observed in seedings grown in infected soil. The pathogens that cause collar rot may be species or genera specific. But generalist pathogens such as Athelia rolfsii (aka Sclerotium rolfsii) are known to attack over 200 different species. While bacteria caused collar rot is not common, trees infected with Fire blight (Erwinia amylovora) may develop collar rot. Non-parasitic collar rot may be caused by winter damage. The symptomatically described disease Southern blight is often the first observed precursor of the collar rot caused by the fungus Athelia rolfsii. Causally known as Sclerotial blight, Athelia rolfsii survives in the soil as sclerotia, and in infected decomposing plant material as mycelia. Collar rot that is caused by the oomycete Phytophthora is causally called Phytophthora collar rot, and is a common disease of fruit and nut trees, as well as other flowers and crops. Phytophthora species remain in the soil, as spores, and in infected plant tissue, as mycelia, so absent control measures (sterilization, toxic applications) the disease continues so long as susceptible plants are grown in that soil.
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wikipedia-en:Collar_rot?oldid=1123926222&ns=0
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13768
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wikipedia-en:Collar_rot