Links  |Sitemap  |  Contact  |  Home  |  中文   |  CAS
 HomeAbout UsResearchScientistsInt`l CooperationNews | Education & TrainingJoin UsPapersResources 
  New Papers
The 5th International Conference on Rodent Biol...
Rodent adaptation and survival under global change

Workshop on Phylogenetic comparative methods in...
The 31st IUBS GA and Conference on Biological ...
Special issue of Integrative Zoology: Biologica...
Exploring and integrating cellulolytic systems ...
  Location: Home > New Papers
Ascarosides Coordinate the Dispersal of a Plant-Parasitic Nematode with the Metamorphosis of Its Vector Beetle
[ Update Time: 2016-08-15 ]

Insect vectors are required for the transmission of many species of parasitic nematodes, but the mechanisms by which the vectors and nematodes coordinate their life cycles are poorly understood. Here, we report that ascarosides, an evolutionarily conserved family of nematode pheromones, are produced not only by a plant-parasitic nematode, but also by its vector beetle. The pinewood nematode and its vector beetle cause pine wilt disease, which threatens forest ecosystems world-wide. Ascarosides secreted by the dispersal third-stage nematode LIII larvae promote beetle pupation by inducing ecdysone production in the beetle and up-regulating ecdysone-dependent gene expression. Once the beetle develops into the adult stage, it secretes ascarosides that attract the dispersal fourth-stage nematode LIV larvae, potentially facilitating their movement into the beetle trachea for transport to the next pine tree. These results demonstrate that ascarosides play a key role in the survival and spread of pine wilt disease.

Tel: +86-10-64807098, Fax: +86-10-64807099, Email:
Address: 1 Beichen West Road, Chaoyang District, Beijing 100101, P.R.China
Internet Explorer 6.0+, best view with resolution 1024x768