Tylenchorhynchus is a genus of nematode

Nematode

The nematodes or roundworms are the most diverse phylum of pseudocoelomates, and one of the most diverse of all animals. Nematode species are very difficult to distinguish; over 28,000 have been described, of which over 16,000 are parasitic. It has been estimated that the total number of nematode...

s including many species of plant parasites. The classification of stunt nematodes - those including the Tylenchorhynchus genus - is unstable; many newly discovered species within this genus are reconsidered to be actually subspecies. Stunt nematodes such as Tylenchorhynchus and the closely related genera, Anguillulina and Merlinia

Merlinia

Merlinia is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the early part of the Arenig stage of the Ordovician Period, a faunal stage which lasted from approximately 478 to 471 million years ago....

, include more than 250 known species. Members of these genera possess similar anatomy and may be easily mistaken for one another. Some debate has led to the classification of single species under different names in two distinct genera (e.g. Tylenchorhynchus cylindricus is Anguillulina dubia).

List of species

• Tylenchorhynchus brevilineatus
  Tylenchorhynchus brevilineatus
  Tylenchorhynchus brevilineatus is a plant pathogenic nematode.- External links :*...
  
  
• Tylenchorhynchus claytoni
  Tylenchorhynchus claytoni
  Tylenchorhynchus claytoni is a plant pathogenic nematode.- External links :*...
  
  – the tobacco
  Tobacco
  Tobacco is an agricultural product processed from the leaves of plants in the genus Nicotiana. It can be consumed, used as a pesticide and, in the form of nicotine tartrate, used in some medicines...
  
   stunt nematode
• Tylenchorhynchus cobb
• Tylenchorhynchus cylindricus
• Tylenchorhynchus dubius
  Tylenchorhynchus dubius
  Tylenchorhynchus dubius is a plant pathogenic nematode.- External links :*...
  
  
• Tylenchorhynchus magnicoda
• Tylenchorhynchus maximus
  Tylenchorhynchus maximus
  Tylenchorhynchus maximus is a plant pathogenic nematode.- External links :*...
  
  
• Tylenchorhynchus nudus
  Tylenchorhynchus nudus
  Tylenchorhynchus nudus is a plant pathogenic nematode cause dwarfing disease specially at rice plant.- External links :*...
  
  
• Tylenchorhynchus phaseoli
  Tylenchorhynchus phaseoli
  Tylenchorhynchus phaseoli is a plant pathogenic nematode.- External links :*...
  
  
• Tylenchorhynchus vulgaris
  Tylenchorhynchus vulgaris
  Tylenchorhynchus vulgaris is a plant pathogenic nematode.- External links :*...
  
  
• Tylenchorhynchus zeae
  Tylenchorhynchus zeae
  Tylenchorhynchus zeae is a plant pathogenic nematode.- External links :*...
  
  

Agricultural diseases

Tylenchorhynchus are soil dwelling stunt nematodes. They inhabit the same soil as plant root systems in which they can cause stressing or disease in plants. About 8% of the studied species are parasitic. Agricultural problems associated with Tylenchorhynchus spp. affect many species such as soybean

Soybean

The soybean or soya bean is a species of legume native to East Asia, widely grown for its edible bean which has numerous uses...

, tobacco

Tobacco

Tobacco is an agricultural product processed from the leaves of plants in the genus Nicotiana. It can be consumed, used as a pesticide and, in the form of nicotine tartrate, used in some medicines...

, tea

Tea

Tea is an aromatic beverage prepared by adding cured leaves of the Camellia sinensis plant to hot water. The term also refers to the plant itself. After water, tea is the most widely consumed beverage in the world...

, oat

Oat

The common oat is a species of cereal grain grown for its seed, which is known by the same name . While oats are suitable for human consumption as oatmeal and rolled oats, one of the most common uses is as livestock feed...

, alfalfa

Alfalfa

Alfalfa is a flowering plant in the pea family Fabaceae cultivated as an important forage crop in the US, Canada, Argentina, France, Australia, the Middle East, South Africa, and many other countries. It is known as lucerne in the UK, France, Australia, South Africa and New Zealand, and known as...

, sweet potato

Sweet potato

The sweet potato is a dicotyledonous plant that belongs to the family Convolvulaceae. Its large, starchy, sweet-tasting, tuberous roots are an important root vegetable. The young leaves and shoots are sometimes eaten as greens. Of the approximately 50 genera and more than 1,000 species of...

, sorghum

Sorghum

Sorghum is a genus of numerous species of grasses, one of which is raised for grain and many of which are used as fodder plants either cultivated or as part of pasture. The plants are cultivated in warmer climates worldwide. Species are native to tropical and subtropical regions of all continents...

, rose

Rose

A rose is a woody perennial of the genus Rosa, within the family Rosaceae. There are over 100 species. They form a group of erect shrubs, and climbing or trailing plants, with stems that are often armed with sharp prickles. Flowers are large and showy, in colours ranging from white through yellows...

, lettuce

Lettuce

Lettuce is a temperate annual or biennial plant of the daisy family Asteraceae. It is most often grown as a leaf vegetable. It is eaten either raw, notably in salads, sandwiches, hamburgers, tacos, and many other dishes, or cooked, as in Chinese cuisine in which the stem becomes just as important...

, grape

Grape

A grape is a non-climacteric fruit, specifically a berry, that grows on the perennial and deciduous woody vines of the genus Vitis. Grapes can be eaten raw or they can be used for making jam, juice, jelly, vinegar, wine, grape seed extracts, raisins, molasses and grape seed oil. Grapes are also...

, elm

Elm

Elms are deciduous and semi-deciduous trees comprising the genus Ulmus in the plant family Ulmaceae. The dozens of species are found in temperate and tropical-montane regions of North America and Eurasia, ranging southward into Indonesia. Elms are components of many kinds of natural forests...

s, and citrus

Citrus

Citrus is a common term and genus of flowering plants in the rue family, Rutaceae. Citrus is believed to have originated in the part of Southeast Asia bordered by Northeastern India, Myanmar and the Yunnan province of China...

.

External links

• The Manual of Agricultural Nematology on Google Books