A Leafhopper (Hishimonus sellatus) Transmits Phylogenetically Distant Phytoplasmas: Rhus Yellows and Hovenia Witches' Broom Phytoplasma |
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| Authors: | Manabu KUSUNOKI Toshiki SHIOMI Motowo KOBAYASHI Torao OKUDAIRA Akihiro OHASHI Teruo NOHIRA |
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| Institution: | (1) Kyushu Research Center, Forestry and Forest Products Research Institute, 4-11-16, Kurokami, Kumamoto 860-0862, Japan, JP;(2) National Institute of Agro-Environmental Sciences, Ibaraki 305-8604, Japan, JP;(3) Aichi Forestry Research Institute, Aichi 441-1622, Japan, JP;(4) Aichi Prefectural Forest Management Office of Houraiji, Aichi 441-1693, Japan, JP;(5) Gifu Prefectural Forest Science Research Institute, Gifu 501-3714, Japan, JP |
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| Abstract: | Phytoplasmas causing a severe decline of three tree species, i.e., Rhus javanica, Hovenia tomentella and Zizyphus jujuba, in Japan were examined for their transmissibility by a leafhopper species Hishimonus sellatus, and for their phylogenetic relatedness. By H. sellatus, Rhus yellows (RhY) phytoplasma was transmissible to white clover and periwinkle seedlings, causing typical symptoms in these
plants. Jujube witches' broom (JWB) phytoplasma was also transferred to the host plant, Z. jujuba, by the leafhopper. Because JWB phytoplasma was transmitted to Hovenia tomentella and caused the same symptoms as Hovenia witches' broom (HWB), JWB phytoplasma may be very closely related to HWB phytoplasma.
RFLP analysis of the PCR products of 16S rDNA revealed that RhY phytoplasma belongs to the Aster yellows (AY) group, and JWB
and HWB phytoplasmas belong to a different group (possibly Elm yellows group). Thus, we found that one species of leafhopper
can carry phylogenetically distant phytoplasmas.
Received 23 April 2001/ Accepted in revised form 29 October 2001 |
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| Keywords: | : phytoplasma Hishimonus sellatus Rhus yellows Jujube witches' broom Hovenia witches' broom transmission |
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