Texas Phoenix Palm Decline (TPPD) is a strain of lethal yellow

Lethal yellowing

thumb|Palm tree dying of lethal yellowingLethal Yellowing is a phytoplasma disease that attacks many species of palms, including some commercially important species such as the Coconut and Date Palm. It is spread by the planthopper Haplaxius crudus which is native to Florida, parts of the...

 phytoplasma

Phytoplasma

Phytoplasma are specialised bacteria that are obligate parasites of plant phloem tissue and transmitting insects . They were first discovered by scientists in 1967 and were named mycoplasma-like organisms or MLOs. They cannot be cultured in vitro in cell-free media...

 currently found on the west coast of Florida

Florida

Florida is a state in the southeastern United States, located on the nation's Atlantic and Gulf coasts. It is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia and to the east by the Atlantic Ocean. With a population of 18,801,310 as measured by the 2010 census, it...

 and coastal Texas

Texas

Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...

. It was first detected in Florida in 2006.

Symptoms

Earliest visible symptoms include yellowing, wilt and drooping of lower leaves. Fruit drop, and flower necrosis soon follow. The spear leaf may die. Root degeneration, and eventually plant death can follow.

Host Range

Currently documented to afflict Phoenix sylvestris

Phoenix sylvestris

Phoenix sylvestris also known as Silver Date Palm or Sugar Date Palm, is a species of flowering plant in the palm family native to southern Pakistan,most of India and Bangladesh. Growing in plains and scrubland to 1300 m, the fruit from this palm species is used to make wine and jelly...

, Phoenix dactylifera, Phoenix canariensis, Sabal palmetto

Sabal palmetto

Sabal palmetto, also known as cabbage palm, palmetto, cabbage palmetto, palmetto palm, blue palmetto, Carolina palmetto, common palmetto, swamp cabbage and sabal palm, is one of 15 species of palmetto palm . It is native to the southeastern United States, Cuba, and the Bahamas...

, and Syagrus romanzoffiana

Syagrus romanzoffiana

Syagrus romanzoffiana is a palm native to South America, from northern Argentina north to eastern Brazil and west to eastern Bolivia. It is very similar to the coconut palm. It had been classified within the Cocos genus as Cocos plumosa, was assigned to Arecastrum, then moved to Syagrus...

, but complete host range is not known at this time. It is frequently spread by planthoppers or poor phytosanitary technique, when instruments used to cut an infected palm are then allowed to cut a healthy one.

External links

• Pest Alert: Texas Phoenix Palm Decline