Beet vascular necrosis (original) (raw)
Beet vascular necrosis and rot is a soft rot disease caused by the bacterium Pectobacterium carotovorum subsp. betavasculorum, which has also been known as Pectobacterium betavasculorum and Erwinia carotovora subsp. betavasculorum. It was classified in the genus Erwinia until genetic evidence suggested that it belongs to its own group; however, the name Erwinia is still in use. As such, the disease is sometimes called Erwinia rot today. It is a very destructive disease that has been reported across the United States as well as in Egypt. Symptoms include wilting and black streaks on the leaves and petioles. It is usually not fatal to the plant, but in severe cases the beets will become hollowed and unmarketable. The bacteria is a generalist species which rots beets and other plants by secre
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| dbo:abstract | Beet vascular necrosis and rot is a soft rot disease caused by the bacterium Pectobacterium carotovorum subsp. betavasculorum, which has also been known as Pectobacterium betavasculorum and Erwinia carotovora subsp. betavasculorum. It was classified in the genus Erwinia until genetic evidence suggested that it belongs to its own group; however, the name Erwinia is still in use. As such, the disease is sometimes called Erwinia rot today. It is a very destructive disease that has been reported across the United States as well as in Egypt. Symptoms include wilting and black streaks on the leaves and petioles. It is usually not fatal to the plant, but in severe cases the beets will become hollowed and unmarketable. The bacteria is a generalist species which rots beets and other plants by secreting digestive enzymes that break down the cell wall and parenchyma tissues. The bacteria thrive in warm and wet conditions, but cannot survive long in fallow soil. However, it is able to persist for long periods of time in the rhizosphere of weeds and non-host crops. While it is difficult to eradicate, there are cultural practices that can be used to control the spread of the disease, such as avoiding injury to the plants and reducing or eliminating application of nitrogen fertilizer. (en) Pectobacterium carotovorum betavasculorum Pectobacterium carotovorum betavasculorum Sous-espèce Pectobacterium carotovorum betavasculorum(Thomson & al. 1984) Hauben & al. 1999 La nécrose vasculaire de la betterave est une maladie bactérienne des plantes causée par Pectobacterium carotovorum subsp. betavasculorum, bactérie connue autrefois sous les noms de Pectobacterium betavasculorum et Erwinia carotovora subsp. betavasculorum.Cette espèce de bactérie a été classée dans le genre Erwinia jusqu'à ce que des preuves génétiques conduisent à la rattacher à un groupe spécifique, le nom d' Erwinia est cependant toujours usité, la maladie étant parfois appelée « pourriture à Erwinia ». C'est une maladie très destructrice qui a été signalée aux États-Unis ainsi qu'en Égypte et en Iran. Les symptômes de la maladie sont principalement le flétrissement et des stries noires sur les feuilles et les pétioles.Elle n'entraîne généralement pas la mort de la plante, mais dans les cas d'infection grave, les betteraves deviennent creuses et sont invendables..La bactérie est une espèce généraliste qui pourrit les betteraves et d'autres espèces de plantes en sécrétant des enzymes digestives qui dégradent les parois cellulaires et les tissus de parenchyme.La bactérie se développe dans des conditions chaudes et humides, mais ne peut pas survivre longtemps dans un sol en jachère.Elle est cependant capable de persister pendant de longues périodes de temps dans la rhizosphère des mauvaises herbes et des cultures non hôtes.Bien qu'elle soit difficile à éradiquer, certaines pratiques culturales peuvent être utilisées pour maîtriser la propagation de la maladie, par exemple en évitant de blesser les plantes et en réduisant ou en éliminant l'application d'engrais azotés. (fr) |
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| dbo:wikiPageWikiLink | dbr:Beet_yellows_virus dbc:Vegetable_diseases dbr:Pathogenic dbr:Rhizosphere dbr:Genus dbr:Hail dbr:Pathogen dbr:Petiole_(botany) dbr:Cultivars dbr:Flagella dbr:Parenchyma dbr:Cell_wall dbr:Hilling dbr:Bacteriophage dbc:Bacterial_plant_pathogens_and_diseases dbc:Eudicot_diseases dbc:Subspecies dbr:Wilting dbc:Enterobacterales dbr:Antibiotic_resistance dbr:Microorganisms dbr:Subspecies dbr:Wet_rot dbr:Vascular_tissue dbr:Sugar_beets dbr:Vegetatively_propagated dbr:Gram_negative dbr:Colony_forming_units dbr:Generalist_species dbr:Nitrogen_fertilization dbr:File:Pectobacterium_Table_Beet_Slice.jpg dbr:File:Pectobacterium_Table_Beet_Stem.jpg |
| dbp:authority | Hauben et al. 1999 (en) |
| dbp:genus | Pectobacterium (en) |
| dbp:species | carotovorum (en) |
| dbp:subspecies | betavasculorum (en) |
| dbp:synonyms | * Erwinia carotovora subsp. betavasculorum * Pectobacterium betavasculorum (en) |
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| gold:hypernym | dbr:Disease |
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| rdfs:comment | Beet vascular necrosis and rot is a soft rot disease caused by the bacterium Pectobacterium carotovorum subsp. betavasculorum, which has also been known as Pectobacterium betavasculorum and Erwinia carotovora subsp. betavasculorum. It was classified in the genus Erwinia until genetic evidence suggested that it belongs to its own group; however, the name Erwinia is still in use. As such, the disease is sometimes called Erwinia rot today. It is a very destructive disease that has been reported across the United States as well as in Egypt. Symptoms include wilting and black streaks on the leaves and petioles. It is usually not fatal to the plant, but in severe cases the beets will become hollowed and unmarketable. The bacteria is a generalist species which rots beets and other plants by secre (en) Pectobacterium carotovorum betavasculorum Pectobacterium carotovorum betavasculorum Sous-espèce Pectobacterium carotovorum betavasculorum(Thomson & al. 1984) Hauben & al. 1999 La nécrose vasculaire de la betterave est une maladie bactérienne des plantes causée par Pectobacterium carotovorum subsp. betavasculorum, bactérie connue autrefois sous les noms de Pectobacterium betavasculorum et Erwinia carotovora subsp. betavasculorum.Cette espèce de bactérie a été classée dans le genre Erwinia jusqu'à ce que des preuves génétiques conduisent à la rattacher à un groupe spécifique, le nom d' Erwinia est cependant toujours usité, la maladie étant parfois appelée « pourriture à Erwinia ». (fr) |
| rdfs:label | Beet vascular necrosis (en) Nécrose vasculaire de la betterave (fr) |
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