- Ditylenchus dipsaci
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Teasel nematode Scientific classification Kingdom: Animalia Phylum: Nematoda Class: Tylenchoidea Subclass: Diplogasteria Order: Tylenchida Superfamily: Tylenchoidea Family: Anguinidae Subfamily: Anguininae Genus: Ditylenchus Species: D. dipsaci Binomial name Ditylenchus dipsaci
Kuhn, 1857Synonyms - Anguillula dipsaci Kuhn, 1857 [1]
Ditylenchus dipsaci is a plant pathogenic nematode which primarily infects onions and garlic. It is commonly known as the stem nematode, the stem and bulb eelworm or onion bloat (in the United Kingdom).[2][3]
Contents
Distribution
This nematode is found in most temperate areas of the world including Europe and the Mediterranean region, North and South America, northern and southern Africa, Asia and Oceania, but is not usually found in tropical regions.[2]
Morphology and biology
These nematodes are microscopic worms approximately 1.5 millimetres long. They penetrate into plants from either the soil or infested planting material and occasionally from seeds. They live between the cells of onion or garlic leaves and between the scales of the bulbs where they feed on cell sap and multiply. The female lays 250 eggs during a season and six generations may develop under optimum conditions when the temperature is in the range 15-20°C. As the number of nematodes increase, visual signs begin to occur. Onion leaves start to curl, garlic leaves become yellow and die, bulb scales are loosened and bulb necks become cracked. Development continues in infested bulbs during storage. This nematode is not restricted to onions and garlic. Its other plant hosts include peas, beetroot, vegetable marrow, pumpkin, rhubarb, and ornamental bulbs. Some weeds also act as hosts including Stellaria media, Linaria vulgaris, Polygonum aviculare, Fallopia convolvulus and Galium aparine.[4]
References
- ^ "Ditylenchus dipsaci". Integrated Taxonomic Information System. http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=196462. Retrieved July 30, 2007.
- ^ a b Ditylenchus dipsaci at European and Mediterranean Plant Protection Organization
- ^ Ditylenchus dipsaci at Nemaplex, University of California
- ^ AgroAtlas
External links
- Ditylenchus dipsaci's photos
Categories:- Nematodes
- Plant pathogens and diseases
- Nematode stubs
- Plant disease stubs
- Agriculture stubs
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