Warning: The information in this archived item was not confirmed with the appropriate National Plant Protection Organization and is provided solely for informational purposes. Please use this information with caution.

Subject: Phytoplasmas related to but distinct from Coconut lethal yellowing phytoplasma reported in Mexico
Date posted: July 14, 2003
Source: European and Mediterranean Plant Protection Organization Reporting Service 2003, No. 4
During surveys for the lethal yellowing (LY) disease of coconut conducted in the center of coconut production located in southwestern Mexico, coconut (Cocos nucifera) palms were observed displaying prominent leaf yellowing symptoms suggestive of LY in the states of Oaxaca in 1997 and Guerrero in 1998. Nutfall and inflorescence necrosis symptoms, which consistently precede foliar yellowing on LY-diseased palms, were uncharacteristically absent. The palms were removed to prevent the spread of disease and leaf or inflorescence tissues from symptomatic palms were assayed for phytoplasma infection. The assays revealed phytoplasmas related to but distinct from LY.

For the full story see the following:

Harrison, N.A., M. Narvaez, H. Almeyda, I. Cordova, M.L. Carpio, and C. Oropeza. 2002. First report of group 16SrIV phytoplasmas infecting coconut palms with leaf yellowing symptoms on the Pacific coast of Mexico. Plant Pathology 51: 808.