Discoloration induced by Raffaelea quercivora isolates in Quercus serrata logs and its relation to phylogeny: a comparison among isolates with and without the Japanese oak wilt incidence including outside of Japan |
| |
Authors: | Dai Kusumoto Hayato Masuya Toshihide Hirao Hideaki Goto Keiko Hamaguchi Wen-I Chou Wiwat Suasa-ard Sawai Buranapanichpan Sopon Uraichuen Oraphan Kern-asa Sunisa Sanguansub Aumporn Panmongkol Thu Pham Quang Sih Kahono Heddy Julistiono Naoto Kamata |
| |
Affiliation: | 1. The University of Tokyo Tanashi Forest, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-8 Midori-cho, Nishi-tokyo, Tokyo, 188-0002, Japan 2. Forestry and Forest Products Research Institute, 1 Matsunosato, Tsukuba, Ibaraki, 305-8687, Japan 3. The University of Tokyo Chichibu Forest, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-49 Hinoda-machi, Chichibu, Saitama, 368-0034, Japan 4. Kyushu Research Center,, Forestry and Forest Products Research Institute, 4-11-6 Kurokami, Chuo, Kumamoto, 860-0862, Japan 5. Kansai Research Center, Forestry and Forest Products Research Institute, 68 Nagaikyutaro, Fushimi-ku, Kyoto, 612-0855, Japan 6. Department of Life Science, National Taitung University, No. 684, Sec. 1, Zhong-Hua Rd., Taitung, 95002, Taiwan 7. Department of Entomology, Kasetsart University, Kamphaeng Saen, Nakhon Pathom, 73140, Thailand 8. Faculty of Agriculture, Chiang Mai University, Chiang Mai, 50200, Thailand 9. Doi Suthep-Pui National Park Office, Chiang Mai, 50200, Thailand 10. Vietnamese Academy of Forest Science, Dong Ngac, Tu Liem, Hanoi, Vietnam 11. Museum Zoologicum Bogoriense, Division of Zoology, Research Center for Biology, LIPI, JL. Raya Jakarta-Bogor Km.46, Cibinong, Bogor, 16911, Indonesia 12. Microbiology Division, Research Center for Biology, LIPI, JL. Raya Jakarta-Bogor Km.46, Cibinong, Bogor, 16911, Indonesia
|
| |
Abstract: | Japanese oak wilt (JOW) has been prevalent in Japan since the late 1980s. Infections of the fungus, Raffaelea quercivora Kubono et Shin. Ito, which is transmitted by an ambrosia beetle [Platypus quercivorus (Murayama)], can cause JOW. Although R. quercivora, P. quercivorus, and oak trees are distributed in other Asia–Pacific countries, the incidence of JOW has not been reported outside Japan. In this study, we collected R. quercivora isolates from 5 Asian countries, including Japan, and compared their ability to induce sapwood discoloration by inoculating Q. serrata logs. The tangential widths of the discoloration in sapwoods inoculated with non-Japanese isolates were equivalent to or greater than those of the 2 Japanese isolates. This indicates that a lack of JOW incidence outside Japan is not because of the lowered ability of R. quercivora to spread discoloration compared with the Japanese isolates. Statistical analyses of the relationship between discoloration and phylogeny based on DNA sequences of actin and chitin synthase showed that the discoloration width was independent of phylogenetic relatedness among the isolates. To discuss why the occurrence of JOW has not been reported outside Japan, further studies (e.g., on host susceptibility and P. quercivorus aggression) throughout Asia are needed. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|