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}}