Texas root rot
336204
202167675
2008-03-30T23:15:32Z
Eubot
231599
Removed taxobox colour. See [[User:Eubot/Removing colours from taxoboxen]].
{{Taxobox
| name = ''Phymatotrichopsis omnivora''
| regnum = [[Fungi]]
| phylum = [[Basidiomycota]]
| classis = [[Basidiomycetes]]
| subclassis = [[Incertae sedis]]
| ordo = [[Incertae sedis]]
| familia = [[Incertae sedis]]
| genus = ''[[Phymatotrichopsis]]''
| species = '''''P. omnivora'''''
| binomial = ''Phymatotrichopsis omnivora''
| binomial_authority = (Duggar) Hennebert, (1973)
| synonyms =
''Grandiniella omnivora'' <small>(Shear) Burds., (1977)</small><br>
''Hydnum omnivorum'' <small>Shear, (1925)</small><br>
''Ozonium auricomum'' <small>Link [as 'auriconum'], (1809)</small><br>
''Ozonium omnivorum'' <small>Shear, (1907)</small><br>
''Phanerochaete omnivora'' <small>(Shear) Burds. & Nakasone [as 'omnivorum'], (1978)</small><br>
''Phymatotrichum omnivorum'' <small>Duggar, (1916)</small><br>
}}
'''Texas root rot''' (also known as '''cotton root rot''') is a
[[pathogen]] fairly common in [[Mexico]] and the southwestern
[[United States]] that causes sudden [[wilt]] and [[death]] of
affected [[plant]]s, usually during the warmer months. It is a
soil-borne [[fungus]] of the [[species]]
''Phymatotrichopsis omnivora'' that attacks the [[root]]s of
susceptible plants. Because the damaged roots are unable to
take up enough [[water]] to maintain the plant in warm weather,
the [[leaves (botany)|leaves]] wilt and the plant dies. The
dead leaves usually remain attached to the plant.
Among the over 2,000 [[dicotyledon]]ous plants susceptible to
Texas root rot are [[fruit]] and [[nut (fruit)|nut]] [[tree]]s,
including [[fig]]s, [[pomegranate]]s, [[elm]]s, [[grape]]s,
[[cotton]], [[alfalfa]], [[oleander]], and [[rose]]s. It is
one of the most destructive fungal plant diseases. Some
[[monocot]] plants are tolerant and others are immune.
Eradication or control of Texas root rot is difficult, at best.
The fungus is known to thrive in moist and [[alkaline]]
[[soil]]s. It can survive for long periods in the soil,
sometimes lying dormant for decades, and can penetrate to
depths of up to twelve feet. Increasing the [[organic compound|organic]]
content of the soil with [[compost]] and [[green manure]] may
help to reduce growth of the fungus.
==External links==
* [http://cals.arizona.edu/pubs/diseases/az1150.html Cotton (Texas) Root Rot]
* [http://www.forestpests.org/ash/texasroot.html Texas Root Rot]
* [http://www.speciesfungorum.org/Names/Names.asp Index Fungorum]
* [http://nt.ars-grin.gov/fungaldatabases USDA ARS Fungal Database]
* [http://www.eppo.org/QUARANTINE/fungi/Phymatotrichopsis_omnivora/PHMPOM_ds.pdf EPPO Quarantine pest: Phymatotrichopsis omnivora]
[[Category:Ascomycota]]
[[Category:Plant pathogens and diseases]]
[[Category:Cotton diseases]]
{{plant-disease-stub}}