2013 Fiscal Year Final Research Report
Did Acalolepta fraudatrix evolve Bursaphelenchus xylophilus, the pathogen of pine wilt disease?
| Project/Area Number |
23380092
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Forest science
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| Research Institution | Forestry and Forest Products Research Institute |
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Principal Investigator |
MAEHARA Noritoshi 独立行政法人森林総合研究所, 東北支所, 主任研究員 (20343808)
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| Co-Investigator(Kenkyū-buntansha) |
NAKAMURA Katsunori 独立行政法人森林総合研究所, 東北支所, グループ長 (40343785)
AIKAWA Takuya 独立行政法人森林総合研究所, 東北支所, 主任研究員 (90343805)
KANZAKI Natsumi 独立行政法人森林総合研究所, 森林微生物研究領域, 主任研究員 (70435585)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | 昆虫 / 進化 / 線虫 / 生物間相互作用 |
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| Research Abstract |
Molecular phylogenetic analyses show that Bursaphelenchus xylophilus evolved from B. xylophilus group nematodes that have a habitat preference for broad-leaved trees. This depends on cerambycid beetles (tribe Lamiini) that vector the nematodes from broad-leaved trees to conifers, namely, those that can use both broad-leaved trees and conifers as host trees. A field study showed that Acalolepta fraudatrix, which can use both broad-leaved trees and conifers, vectored Bursaphelenchus doui, a species in the B. xylophilus group. In addition, laboratory experiments indicated that B. doui could be vectored by both cerambycid beetles in broad-leaved trees and ones in conifers. Therefore, we suggest the possibility that B. doui was vectored from broad-leaved trees to conifers by A. fraudatrix, and then changed its vector from A. fraudatrix to Monochamus alternatus.
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